査読付き論文（2010～2020）

      1. Heeyoung Lee, Kohei Noda, Kentaro Nakamura, Yosuke Mizuno. Fiber-optic distributed measurement of polarization beat length using slope-assisted Brillouin optical correlation-domain reflectometry, Optical Review, vol. 27, no. 6, pp. 542-547, Nov. 2020.
      2. Avik Kumar Das, Heeyoung Lee, Kohei Noda, Yosuke Mizuno, Christopher Kin Ying Leung, Kentaro Nakamura. Potential of mechanically induced cascaded long-period grating structure for reflectometric pressure, strain, and temperature sensing, IEEE Sensors Journal, vol. 20, no. 18, pp. 10539-10546, Sep. 2020.
      3. Kohei Noda, Heeyoung Lee, Kentaro Nakamura, Yosuke Mizuno. Measurement range enlargement in Brillouin optical correlation-domain reflectometry based on chirp modulation scheme, Applied Physics Express, vol. 13, no. 8, 082003, Jul. 2020.
      4. Heeyoung Lee, Kentaro Nakamura, Yosuke Mizuno. Recent progress in slope-assisted Brillouin optical correlation-domain reflectometry, Optical Fiber Technology, vol. 59, 102312, Jul. 2020 <invited review>.
      5. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura, Chao Zhang, Lei Jin, Sze Yun Set, Shinji Yamashita. Pilot demonstration of correlation-domain distributed temperature sensing using forward Brillouin scattering, Japanese Journal of Applied Physics, vol. 59, no. 8, 088002, Jul. 2020.
      6. Kentaro Nakamura. Evaluation methods for materials for power ultrasonic applications, Japanese Journal of Applied Physics,  vol. 59, no. SK, SK0801, Jun. 2020.
      7. Neisei Hayashi, Yosuke Mizuno, Heeyoung Lee, Kentaro Nakamura, Sze Yun Set, Shinji Yamashita. Characterization of cascaded forward Brillouin scattering seeded by backward stimulated Brillouin scattering in optical fibers, IEICE Electronics Express, vol. 17, no. 12, 20200139, Jun. 2020.
      8. Yosuke Mizuno, Sonoko Hagiwara, Heeyoung Lee, Neisei Hayashi, Michiko Nishiyama, Kazuhiro Watanabe, Kentaro Nakamura. Strain and temperature dependencies of multimodal interference spectra in hetero-core-fiber structures, Japanese Journal of Applied Physics, vol. 59, no. 5, 058002, May 2020.
      9. Akio Hayashida, Yosuke Mizuno, Kentaro Nakamura. Estimation of room temperature based on acoustic frequency response, Acoustical Science and Technology, vol. 41, no. 4, pp. 693-696, Jul. 2020.
      10. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. Piezoelectric motor utilizing an alumina/PZT transducer, IEEE Transactions on Industrial Electronics, vol. 67, no. 8, pp. 6762-6772, Aug. 2020.
      11. Yosuke Mizuno, Naoki Motoishi, Kohei Noda, Heeyoung Lee, Kentaro Nakamura. Effect of laser temperature control on Brillouin optical correlation-domain reflectometry, Applied Physics Express, vol. 13, no. 5, 052001, Apr. 2020.
      12. Yuki Harada, Daisuke Koyama, Marina Fukui, Akira Emoto, Kentaro Nakamura, Mami Matsukawa. Molecular orientation in a variable-focus liquid crystal lens induced by ultrasound vibration, Scientific Reports, vol. 10, 6168, Apr. 2020.
      13. Teruki Akimori, Kentaro Nakamura, Tsuyoshi Asahi, Hiroyuki Wada. Preparation of chloroaluminum phthalocyanine nanoparticles by laser ablation in liquid and their photoacoustic imaging, Journal of Laser Applications, vol. 32, no. 2, 022070, Apr. 2020.
      14. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. A traveling-wave ultrasonic motor utilizing a ring-shaped alumina/PZT vibrator, Smart Materials and Structures, vol. 28, no. 12, 125017, Nov. 2019.
      15. Mihail Slabki, Jiang Wu, Michael Weber, Patrick Breckner, Daniel Isaia, Kentaro Nakamura, Jurij Koruza. Anisotropy of the high-power piezoelectric properties of Pb(Zr,Ti)O3, Journal of the American Ceramic Society, vol. 102, no. 10, pp. 6008–6017, Oct. 2019.
      16. Yosuke Mizuno, Tianyi Ma, Ryo Ishikawa, Heeyoung Lee, Antreas Theodosiou, Kyriacos Kalli, Kentaro Nakamura. Twist dependencies of strain and temperature sensitivities of perfluorinated graded-index polymer optical fiber Bragg gratings, Applied Physics Express, vol. 12, no. 8, 082007, Jul. 2019.
      17. Heeyoung Lee, Kohei Noda, Yosuke Mizuno, Kentaro Nakamura. Trade-off relation between strain dynamic range and spatial resolution in slope-assisted Brillouin optical correlation-domain reflectometry, Measurement Science and Technology, vol. 30, no. 7, 075204, Mar. 2019.
      18. Yosuke Mizuno, Giwoon Han, Kohei Noda, Heeyoung Lee, Kentaro Nakamura. Low-cost Brillouin optical correlation-domain reflectometry involving merely one fibre amplifier, Electronics Letters, vol. 55, no. 13, pp. 754-756, Jun. 2019 [Featured: Reflect on this: Optical reflectometry implemented using only one fibre amplifier for distributed strain sensing, Electronics Letters, vol. 55, no. 13, p. 720, Jun. 2019].
      19. Xinhua Guo, Rongcheng Su, Chaoyue Hu, Xiaodong Ye, Huachun Wu, Kentaro Nakamura. A single feature for human activity recognition using two-dimensional acoustic array, Applied Physics Letters, vol. 114, no. 21, 214101, May 2019.
      20. Yosuke Mizuno, Sonoko Hagiwara, Heeyoung Lee, Yutaka Ochi, Takahiro Matsui, Yukihiro Matsumoto, Yosuke Tanaka, Hitoshi Nakamura, Kentaro Nakamura. Infrared thermometry for breakage detection of optical fibers embedded in structures, Applied Physics Express, vol. 12, no. 6, 062007, May 2019.
      21. Yosuke Mizuno, Ryo Ishikawa, Heeyoung Lee, Antreas Theodosiou, Kyriacos Kalli, Kentaro Nakamura. Potential of discriminative sensing of strain and temperature using perfluorinated polymer FBG, IEEE Sensors Journal, vol. 19, no. 12, pp. 4458-4462, May 2019.
      22. Kohei Noda, Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura. First demonstration of Brillouin optical correlation-domain reflectometry based on external modulation scheme, Japanese Journal of Applied Physics, vol. 58, no. 6, 068004, May 2019.
      23. Yosuke Mizuno, Sonoko Hagiwara, Natsuki Matsutani, Kohei Noda, Heeyoung Lee, Kentaro Nakamura. Observation of multimodal interference in millimeter-long polymer optical fibers, IEICE Electronics Express, vol. 16, no. 8, 20190135, Apr. 2019.
      24. Yosuke Mizuno, Heeyoung Lee, Neisei Hayashi, Kentaro Nakamura. Noise suppression technique for distributed Brillouin sensing with polymer optical fibers, Optics Letters, vol. 44, no. 8, pp. 2097-2100, Apr. 2019.
      25. Kazuhiro Shikinaka, Wei Qiu, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Ultrasonic velocity measurement in imogolite-based colloidal solution and thixotropic hydrogel, Clay Science, vol. 23, no. 1, pp. 15-18, Apr. 2019.
      26. Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura. Enhanced stability and sensitivity of slope-assisted Brillouin optical correlation-domain reflectometry using polarization-maintaining fibers, OSA Continuum, vol. 2, no. 3, pp. 874-880, Mar. 2019.
      27. Heeyoung Lee, Kohei Noda, Yosuke Mizuno, Kentaro Nakamura. Distributed temperature sensing based on slope-assisted Brillouin optical correlation-domain reflectometry with over 10 km measurement range, Electronics Letters, vol. 55, no. 5, pp. 276-278, Jan. 2019.
      28. Yosuke Mizuno, Tianyi Ma, Ryo Ishikawa, Heeyoung Lee, Antreas Theodosiou, Kyriacos Kalli, Kentaro Nakamura. Lorentzian demodulation algorithm for multimode polymer optical fiber Bragg gratings, Japanese Journal of Applied Physics, vol. 58, no. 2, 028003, Jan. 2019.
      29. Kohei Noda, Giwoon Han, Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura. Proposal of external modulation scheme for fiber-optic correlation-domain distributed sensing, Applied Physics Express, vol. 12, no. 2, 022005, Jan. 2019.
      30. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. Enhancement in mechanical quality factors of poly phenylene sulfide under high-amplitude ultrasonic vibration through thermal annealing, Ultrasonics, vol. 91, no. 1, pp. 52-61, Jan. 2019.
      31. Yosuke Mizuno, Natsuki Matsutani, Neisei Hayashi, Heeyoung Lee, Masaki Tahara, Hideki Hosoda, Kentaro Nakamura. Brillouin characterization of slimmed polymer optical fibers for strain sensing with extremely wide dynamic range, Optics Express, vol. 26, no. 21, pp. 28030-28037, Oct. 2018.
      32. Yosuke Mizuno, Heeyoung Lee, Kentaro Nakamura. Recent advances in Brillouin optical correlation-domain reflectometry, Applied Sciences, vol. 8, no. 10, 1845, Oct. 2018 <invited review>.
      33. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. Ultrasonic motors with poly phenylene sulfide/alumina/PZT triple-layered vibrators, Sensors and Actuators A: Physical, vol.284, pp. 158-167, Dec. 2018.
      34. Wei Qiu, Yosuke Mizuno, Koshi Adachi, Kentaro Nakamura. Ultrasonic motor performance influenced by lubricant properties, Sensors and Actuators A: Physical, vol. 282, pp. 183-191, Sep. 2018.
      35. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. Vibration characteristics of polymer-based Langevin transducers, Smart Materials and Structures, vol. 27, no. 9, 095013, Sep. 2018.
      36. Yosuke Mizuno, Goki Numata, Tomohito Kawa, Heeyoung Lee, Neisei Hayashi, Kentaro Nakamura. Multimodal interference in perfluorinated polymer optical fibers: Application to ultrasensitive strain and temperature sensing, IEICE Transactions on Electronics, vol. E101-C, no. 7, pp. 602-610, Jul. 2018 <invited review>.
      37. Heeyoung Lee, Yutaka Ochi, Takahiro Matsui, Yukihiro Matsumoto, Yosuke Tanaka, Hitoshi Nakamura, Yosuke Mizuno, Kentaro Nakamura. Distributed strain measurement and possible breakage detection of optical-fiber-embedded composite structure using slope-assisted BOCDR, Applied Physics Express, vol. 11, no. 7, 072501, Jun. 2018.
      38. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura, Sze Yun Set, Shinji Yamashita. Experimental observation of spontaneous depolarized guided acoustic-wave Brillouin scattering in side cores of a multi-core fiber, Applied Physics Express, vol. 11, no. 6, 062502, May 2018.
      39. Heeyong Lee, Tianyi Ma, Yosuke Mizuno, Kentaro Nakamura. Bending-loss-independent operation of slope-assisted Brillouin optical correlation-domain reflectometry, Scientific Reports, vol. 8, 7844, May 2018.
      40. Arnaldo Gomes Leal-Junior, Anselmo Frizera, Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura, Cátia Leitão, Maria Fátima Domingues, Nélia Alberto, Paulo Antunes, Paulo André, Carlos Alberto Ferreira Marques, Maria José Pontes. Design and characterization of curvature sensor using fused polymer optical fibers, Optics Letters, vol. 43, no. 11, pp. 2539-2542, May 2018.
      41. Arnaldo Gomes Leal-Junior, Anselmo Frizera, Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura, Tiago Paixão, Cátia Leitão, Maria Fátima Domingues, Nélia Alberto, Paulo Antunes, Paulo André, Carlos Alberto Ferreira Marques, Maria José Pontes. Strain, temperature, moisture, and transverse force sensing using fused polymer optical fibers, Optics Express, vol. 26, no. 10, pp. 12939-12947, May 2018.
      42. Yuki Shimizu, Daisuke Koyama, Marina Fukui, Akira Emoto, Kentaro Nakamura, Mami Matsukawa, Ultrasound liquid crystal lens, Applied Physics Letters, vol. 112, no. 16, 161104, Apr. 2018.
      43. Yosuke Mizuno, Neisei Hayashi, Hideyuki Fukuda, Kentaro Nakamura. Phase-detected Brillouin optical correlation-domain reflectometry, Optical Review, vol. 25, no. 3, pp. 473-485, May 2018 <invited review>.
      44. Xi Zeng, Yosuke Mizuno, Kentaro Nakamura, Shinichiro Fuse, Hiroyuki Nakamura. Compact test set for sensitivity evaluation of photoacoustic contrast agent, Acoustical Science and Technology, vol. 39, no. 3, pp. 259-262, May 2018.
      45. Arnaldo Gomes Leal-Junior, Anselmo Frizera, Maria José Pontes, Paulo Antunes, Nélia Alberto, Maria Fátima Domingues, Heeyoung Lee, Ryo Ishikawa, Yosuke Mizuno, Kentaro Nakamura, Paulo André, Carlos Alberto Ferreira Marques. Dynamic mechanical analysis on fused polymer optical fibers: towards sensor applications, Optics Letters, vol. 43, no. 8, pp. 1754-1757, Apr. 2018.
      46. Yosuke Mizuno, Sonoko Hagiwara, Tomohito Kawa, Heeyoung Lee, Kentaro Nakamura. Displacement sensing based on modal interference in polymer optical fibers with partially applied strain, Japanese Journal of Applied Physics, vol. 57, no. 5, 058002, Apr. 2018.
      47. Ryo Ishikawa, Heeyoung Lee, Amédée Lacraz, Antreas Theodosiou, Kyriacos Kalli, Yosuke Mizuno, Kentaro Nakamura. Strain dependence of perfluorinated polymer optical fiber Bragg grating measured at different wavelengths, Japanese Journal of Applied Physics, vol. 57, no. 3, 038002, Feb. 2018.
      48. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. Polymer-based ultrasonic motors utilizing high-order vibration modes, IEEE/ASME Transactions on Mechatronics, vol. 23, no. 2, pp. 788-799, 2018.
      49. Yosuke Mizuno, Heeyoung Lee, Neisei Hayashi, Kentaro Nakamura. Hydrostatic pressure dependence of Brillouin frequency shift in polymer optical fibers, Applied Physics Express, vol.11,  no.1, 012502, Jan. 2018.
      50. Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura. Detection of 2-mm-long strained section in silica fiber using slope-assisted Brillouin optical correlation-domain reflectometry, Japanese Journal of Applied Physics, vol. 57, no. 2, 020303, Jan. 2018.
      51. Natsuki Matsutani, Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura. Long-term stability enhancement of Brillouin measurement in polymer optical fibers using amorphous fluoropolymer, Japanese Journal of Applied Physics, vol.57, no.1, 018001, Jan. 2018.
      52. Yuki Shimizu, Daisuke Koyama, Satoki Taniguchi, Akira Emoto, Kentaro Nakamura, Mami Matsukawa, Periodic pattern of liquid crystal molecular orientation induced by ultrasound vibrations, Applied Physics Letters, vol. 111, no. 23, 231101, Dec. 2017.
      53. Ryo Ishikawa, Heeyoung Lee, Amédée Lacraz, Antreas Theodosiou, Kyriacos Kalli, Yosuke Mizuno, Kentaro Nakamura. Pressure dependence of fiber Bragg grating inscribed in perfluorinated polymer fiber, IEEE Photonics Technology Letters, vol. 29, no. 24, pp. 2167-2170, Dec. 2017.
      54. Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura. Measurement sensitivity dependencies on incident power and spatial resolution in slope-assisted Brillouin optical correlation-domain reflectometry, Sensors and Actuators A: Physical, vol. 268, pp. 68-71, Nov. 2017.
      55. Jiang Wu, Yosuke Mizuno, Kentaro Nakamura. Structural parameter study on polymer-based ultrasonic motor, Smart Materials and Structures, vol. 26, no. 11, 115022, Nov. 2017.
      56. Xinhua Guo, Song Sun, Xiantao Yu, Pan Wang, Kentaro Nakamura. Frequency representation: visualization and clustering of acoustic data using self-organizing maps, Ultrasonic Imaging, vol. 39, no. 6, pp. 339-347, Nov. 2017.
      57. Yosuke Mizuno, Heeyoung Lee, Shumpei Shimada, Yukihiro Matsumoto, Yosuke Tanaka, Hitoshi Nakamura, Kentaro Nakamura. Pilot demonstration of refractive index sensing using polymer optical fiber crushed with slotted screwdriver, IEICE Electronics Express, vol. 14, no. 21, 20170962, Nov. 2017.
      58. Xi Zeng, Yosuke Mizuno, Kentaro Nakamura. Sound intensity probe for ultrasonic field in water using light-emitting diodes and piezoelectric elements, Japanese Journal of Applied Physics, vol. 56, no. 12, 127301, Nov. 2017.
      59. Hiroki Tanaka, Yosuke Mizuno, Kentaro Nakamura. Ejection of small droplet from microplate using focused ultrasound, Japanese Journal of Applied Physics, vol. 56, no. 8, 087202, Jul. 2017.
      60. Kazuhiko Hasebe, Yosuke Mizuno, Kentaro Nakamura. Non-contact alignment-free soundness evaluation of adhesive anchors by exciting/detecting longitudinal bolt vibrations using electromagnetic acoustic waves, Acoustical Science and Technology, vol. 38, no. 4, pp. 225-228, Jul. 2017.
      61. Yosuke Mizuno, Neisei Hayashi, Hideyuki Fukuda, Kentaro Nakamura. Single-end-access distributed strain sensing with wide dynamic range using higher-speed Brillouin optical correlation-domain reflectometry, Japanese Journal of Applied Physics, vol. 56, no. 7, 072501, Jun. 2017.
      62. Tomohito Kawa, Goki Numata, Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Temperature sensing based on multimodal interference in polymer optical fibers: Room-temperature sensitivity enhancement by annealing, Japanese Journal of Applied Physics, vol. 56, no. 7, 078002, Jun. 2017.
      63. Yuji Wada, Kohei Yuge, Hiroki Tanaka, Kentaro Nakamura. Analysis of an ultrasonically rotating droplet by moving particle semi-implicit and distributed point source method in a rotational coordinate, Jpn. J. Appl. Phys., vol. 56, no. 7S1, 07JE01, Jun. 2017.
      64. Yosuke Mizuno, Hiroki Ujihara, Heeyoung Lee, Neisei Hayashi, Kentaro Nakamura. Polymer optical fiber tapering using hot water, Applied Physics Express, vol. 10, no. 6, 062502, May 2017.
      65. Kazunari Minakawa, Yosuke Mizuno, Kentaro Nakamura. Cross effect of strain and temperature on Brillouin frequency shift in polymer optical fibers, Journal of Lightwave Technology, vol. 35, no. 12, pp. 2481-2486, May 2017.
      66. Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Slope-assisted Brillouin optical correlation-domain reflectometry using polymer optical fibers with high propagation loss, Journal of Lightwave Technology, vol.35, no.11, pp2306-2310, Apr. 2017.
      67. Kentaro Nakamura, Shota Odajima, Marie Tabaru. Distributed force sensor based on acoustic characteristics of elastic tube, Acoustical Science and Technology, vol. 38, no.2, pp. 80-86, Mar. 2017.
      68. Tomohito Kawa, Goki Numata, Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Single-end-access strain and temperature sensing based on multimodal interference in polymer optical fibers, IEICE Electronics Express, vol. 14, no. 3, 20161239, Feb. 2017.
      69. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura, Sze Yun Set, Shinji Yamashita. Experimental study on depolarized GAWBS spectrum for optomechanical sensing of liquids outside standard fibers, Optics Express, vol. 25, no. 3, pp. 2239-2244, Jan. 2017.
      70. Shumpei Shimada, Heeyoung Lee, Makoto Shizuka, Hiroki Tanaka, Neisei Hayashi, Yukihiro Matsumoto, Yosuke Tanaka, Hitoshi Nakamura, Yosuke Mizuno, Kentaro Nakamura. Refractive index sensing using ultrasonically crushed polymer optical fibers, Applied Physics Express, vol. 10, no. 1, 012201, Jan. 2017.
      71. Yosuke Mizuno, Neisei Hayashi, Hideyuki Fukuda, Kwang Yong Song, Kentaro Nakamura. Ultrahigh-speed distributed Brillouin reflectometry, Light: Science & Applications, vol. 5, e16184, Dec. 2016 [LSA Outstanding Paper Award; Optics Paper Award 2017; Telecom System Award 2018].
      72. Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Operation of slope-assisted Brillouin optical correlation-domain reflectometry: Comparison of system output with actual frequency shift distribution, Optics Express, vol. 24, no. 25, pp. 29190-29197, Dec. 2016.
      73. Makoto Shizuka, Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Simplified optical correlation-domain reflectometry employing proximal reflection point, Japanese Journal of Applied Physics, vol. 55, no. 12, 128003, Nov. 2016.
      74. Jiang Wu, Kazuhiko Hasebe, Yosuke Mizuno, Kentaro Nakamura. Magnetic field sensor using a polymer-based vibrator, Measurement Science and Technology, vol. 27, no. 9, 097002, Aug. 2016.
      75. Shumpei Shimada, Hiroki Tanaka, Kazuhiko Hasebe, Neisei Hayashi, Yutaka Ochi, Takahiko Matsui, Itaru Nishizaki, Yukihiro Matsumoto, Yosuke Tanaka, Hitoshi Nakamura, Yosuke Mizuno, Kentaro Nakamura. Ultrasonic welding of polymer optical fibres onto composite materials, Electronics Letters, vol. 52, no. 17, pp. 1472-1474, Aug. 2016.
      76. Keisuke Imade, Takashi Kageyama, Daisuke Koyama, Yoshiaki Watanabe, Kentaro Nakamura, Iwaki Akiyama. Measurement of sound pressure and temperature in tissue-mimicking material using an optical fiber Bragg grating sensor, Journal of Medical Ultrasonics, vol. 43, no. 4, pp. 473-479, Jun. 2016.
      77. Yuji Wada, Kohei Yuge, Hiroki Tanaka, Kentaro Nakamura. Analysis of ultrasonically rotating droplet   using moving particle semi-implicit and distributed point source methods, Japanese Journal of Applied Physics, vol. 55, no. 7S1, 07KE06, Jun.2016.
      78. Kazunari Minakawa, Kotaro Koike, Neisei Hayashi, Yasuhiro Koike, Yosuke Mizuno, Kentaro Nakamura. Dependence of Brillouin frequency shift on water absorption ratio in polymer optical fibers, Journal of Applied Physics, vol. 119, no. 22, 223102, Jun. 2016.
      79. Hiroki Tanaka, Yuji Wada, Yosuke Mizuno, Kentaro Nakamura. Effect of holed reflector on acoustic radiation force in noncontact ultrasonic dispensing of small droplet, Japanese Journal of Applied Physics, vol. 55, no. 6, 067302, Jun. 2016.
      80. Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Slope-assisted Brillouin optical correlation-domain reflectometry: proof of concept, IEEE Photonics Journal, vol. 8, no. 3, 6802807, May 2016.
      81. Yuji Wada, Daisuke Koyama, Kentaro Nakamura. Numerical simulation of compressible fluid flow in an ultrasonic suction pump, Ultrasonics, vol. 70, pp. 191-198, May 2016.
      82. Makoto Shizuka, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Simplified optical correlation-domain reflectometry without reference path, Applied Optics, vol. 55, no. 15, pp. 3925-3928, May 2016.
      83. Jiang Wu, Yosuke Mizuno, Marie Tabaru, Kentaro Nakamura. Measurement of mechanical quality factors of polymers in flexural vibration for high-power ultrasonic application, Ultrasonics, vol. 69, pp. 74-82, Apr. 2016.
      84. Shumpei Shimada, Makoto Shizuka, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Measurement of the optical path length difference in an interferometer using a sinusoidally frequency-modulated light source, Applied Optics, vol. 55, no. 11, pp. 2904-2908, Apr. 2016.
      85. Neisei Hayashi, Heeyoong Lee, Yosuke Mizuno, Kentaro Nakamura. Observation of backward guided-acoustic-wave Brillouin scattering in optical fibers using pump-probe technique, IEEE Photonics Journal, vol. 8, no. 3, 7100707, Apr. 2016.
      86. Satoki Taniguchi, Daisuke Koyama, Takayuki Shimizu, Akira Emoto, Kentaro Nakamura, Mami Matsukawa. Control of liquid crystal molecular orientation using ultrasound vibration, Applied Physics Letters, vol. 108, no. 10, p. 101103, Mar. 2016.
      87. Wei Qiu, Yosuke Mizuno, Kentaro Nakamura. Tribological performance of ceramics in lubricated ultrasonic motors, Wear, vol. 352-353, pp. 188-195, Feb. 2016.
      88. Makoto Shizuka, Shumpei Shimada, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Optical correlation-domain reflectometry without optical frequency shifter, Applied Physics Express, vol. 9, no. 3, 032702, Feb. 2016.
      89. Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Observation of Brillouin gain spectrum in optical fibers in telecommunication band: effect of pump wavelength, IEICE Electron. Express, vol. 13, no. 3, 20151066, Jan. 2016.
      90. Minoru Yoshida, Yoshiharu Hirayama, Atsushi Takahara, Motofumi Kashi, Keiji Takeuchi, Toshiharu Ikeda, Fumio Hirai, Yosuke Mizuno, Kentaro Nakamura, Hitoshi Kimura, Norio Ino, Wataru Inoue. Real-time displacement measurement system using phase-shifted optical-pulse interferometry: Application to a seismic observation system, Japanese Journal of Applied Physics, vol. 55, no. 2, 022701, Jan. 2016.
      91. Jiang Wu, Yosuke Mizuno, Marie Tabaru, Kentaro Nakamura. Ultrasonic motors with polymer-based vibrators, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 62, no. 12, pp. 2169-2178, Dec. 2015.
      92. Daisuke Koyama, Yuta Kashihara, Megumi Hatanaka, Kentaro Nakamura, Mami Matsukawa. Movable optical lens array using ultrasonic vibration, Sensors and Actuators A: Physical, vol. 237, no. 1, pp. 35-40, Nov. 2015.
      93. Jiang Wu, Yosuke Mizuno, Marie Tabaru, Kentaro Nakamura. Traveling-wave ultrasonic motor using polymer-based vibrator, Japanese Journal of Applied Physics, vol. 55, no. 1, pp. 018001, Nov. 2015.
      94. Neisei Hayashi, Makoto Shizuka, Kazunari Minakawa, Yosuke Mizuno, Kentaro Nakamura. Simplified optical correlation-domain reflectometry using polymer fiber, IEICE Electron. Express, vol. 12, no. 22, pp. 20150824, Oct. 2015.
      95. Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Refractive index sensing using V-shaped polymer optical fibers, Japanese Journal of Applied Physics, vol. 54, no. 11, 118001, Sep. 2015.
      96. Jiang Wu, Yosuke Mizuno, Marie Tabaru, Kentaro Nakamura. Airborne ultrasonic transducer using polymer-based elastomer with high output-to-weight ratio, Japanese Journal of Applied Physics, vol. 54, no. 8, 087201, Jul. 2015.
      97. Hiroki Ujihara, Neisei Hayashi, Kazunari Minakawa, Yosuke Mizuno, Kentaro Nakamura. Polymer optical fiber tapering without the use of external heat source and its application to refractive index sensing, Applied Physics Express, vol. 8, no. 7, 072501, Jun. 2015.
      98. Jun Yamamoto, Yosuke Mizuno, Marie Tabaru, Kentaro Nakamura. Linear array transducer for high-power airborne ultrasound using flextensional structure, Japanese Journal of Applied Physics, vol. 54, no. 07, 07HE16, Jun. 2015.
      99. Goki Numata, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Drastic sensitivity enhancement of temperature sensing based on modal interference in polymer optical fibers, Applied Physics Express, vol. 8, no. 7, 072502, Jun. 2015.
      100. Yosuke Mizuno, Neisei Hayashi, Hiroki Tanaka, Yuji Wada, Kentaro Nakamura. Brillouin scattering in multi-core optical fibers for sensing applications, Scientific Reports, vol. 5, 11388, Jun. 2015.
      101. Neisei Hayashi, Kazunari Minakawa, Yosuke Mizuno, Kentaro Nakamura. Polarization scrambling in Brillouin optical correlation-domain reflectometry using polymer fibers, Applied Physics Express, vol. 8, no. 6, 062501, May 2015.
      102. Kazunari Minakawa, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Thermal memory effect in polymer optical fibers, IEEE Photonics Technology Letters, vol. 27, no. 13, pp. 1394-1397, Apr. 2015.
      103. Kazunari Minakawa, Kotaro Koike, Qiming Du, Neisei Hayashi, Yasuhiro Koike, Yosuke Mizuno, Kentaro Nakamura. Temperature dependence of Brillouin frequency shift in polymers controlled by plasticization effect, Journal of Applied Physics, AIP Publishing, vol. 117, 144505, Apr. 2015.
      104. Marie Nakazawa, Masaya Tabaru, Toshiki Takayasu, Takahiro Aoyagi, Kentaro Nakamura. 100-MHz utrasonic linear array transducers based on polyurea- film, Acoustical Science and Technology, vol. 36, no. 2, pp. 139-148, Mar. 2015.
      105. Marie Tabaru, Ryusuke Fujino, Kentaro Nakamura. Effects of ultrasound irradiation on the growth of Japanese radish sprouts, Acoustical Science and Technology, vol. 36, no. 2, pp. 167-170, Mar. 2015.
      106. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Simplified Brillouin optical correlation-domain reflectometry using polymer optical fiber, IEEE Photonics Journal, vol. 7, no. 1, 6800407, Feb. 2015.
      107. Goki Numata, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Strain and temperature sensing based on multimode interference in partially chlorinated polymer optical fibers, IEICE Electronics Express, vol. 12, no. 2, 20141173, Jan. 2015.
      108. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Fiber-optic interferometry using narrowband light source and electrical spectrum analyzer: influence on Brillouin measurement, Journal of Lightwave Technology, vol. 32, no. 24, pp. 4132-4138, Dec. 2014.
      109. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Alternative implementation of simplified Brillouin optical correlation-domain reflectometry, IEEE Photonics Journal, vol. 6, no. 6, p. 6803108, Dec. 2014.
      110. Wei Qiu, Yosuke Mizuno, Marie Tabaru, Kentaro Nakamura. Can lubricant enhance the torque of ultrasonic motors? An experimental investigation, Applied Physics Letters, vol. 105, no. 22, 224102 1-4, Dec. 2014.
      111. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Simplified configuration of Brillouin optical correlation-domain reflectometry, IEEE Photonics Journal, vol. 6, no. 5, 6802807, Oct. 2014.
      112. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Suppression of ghost correlation peak in Brillouin optical correlation-domain reflectometry, Applied Physics Express, vol. 7, no. 11, p. 112501, Oct. 2014.
      113. Goki Numata, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Ultra-sensitive strain and temperature sensing based on modal interference in perfluorinated polymer optical fibers, IEEE Photonics Journal, vol. 6, no. 5, 6802306, Oct. 2014.
      114. Mingjie Ding, Yosuke Mizuno, Kentaro Nakamura. Discriminative strain and temperature measurement using Brillouin scattering and fluorescence in erbium-doped optical fiber, Optics Express, vol. 22, no. 20, pp. 24706-24712, Oct. 2014.
      115. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Distributed Brillouin sensing with centimeter-order spatial resolution in polymer optical fibers, Journal of Lightwave Technology, vol. 32, no. 21, pp. 3999-4003, Sep. 2014.
      116. Ali Abdulhadi Jasim, Neisei Hayashi, Sulaiman Wadi Harun, Harith Ahmad, Richard Penny, Yosuke Mizuno, Kentaro Nakamura. Refractive index and strain sensing using inline Mach-Zehnder interferometer comprising perfluorinated graded-index plastic optical fiber, Sensors and Actuators A: Physical, vol. 219, pp. 94-99, Sep. 2014.
      117. Hiroki Ujihara, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Measurement of large-strain dependence of optical propagation loss in perfluorinated polymer fibers for use in seismic diagnosis, IEICE Electronics Express, vol. 11, no. 17, p. 20140707, Sep. 2014.
      118. Mingjie Ding, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Brillouin signal amplification in pumped erbium-doped optical fiber, IEICE Electronics Express, vol. 11, no. 18, p. 20140627, Sep. 2014.
      119. Yosuke Mizuno, Shuji Ohara, Neisei Hayashi, Kentaro Nakamura. Ultrasonic splicing of polymer optical fibres, Electronics Letters, vol. 50, no. 19, pp. 1384-1386, Sep. 2014.
      120. Neisei Hayashi, Kazunari Minakawa, Yosuke Mizuno, Kentaro Nakamura. Brillouin frequency shift hopping in polymer optical fiber, Applied Physics Letters, vol. 105, no. 9, p. 091113, Sep. 2014.
      121. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Fresnel-assisted self-heterodyne detection for Brillouin gain spectrum characterisation in polymer optical fibres, Electronics Letters, vol. 50, no. 16, pp. 1153-1155, Jul. 2014.
      122. Wei Qiu, Yaying Hong, Yosuke Mizuno, Weijia Wen, Kentaro Nakamura. Non-contact piezoelectric rotary motor modulated by giant electrorheological fluid, Sensors and Actuators A: Physical, vol. 217, pp. 124-128, Jul. 2014.
      123. Yuji Wada, Daisuke Koyama, Kentaro Nakamura. Acoustic streaming in an ultrasonic air pump with three-dimensional finite-difference time-domain analysis and comparison to the measurement, Ultrasonics, 54, pp. 2119-2125, Jun. 2014.
      124. Yosuke Mizuno, Neisei Hayashi, Hiroki Tanaka, Kentaro Nakamura. Spiral propagation of polymer optical fiber fuse accompanied by spontaneous burst and its real-time monitoring using Brillouin scattering, IEEE Photonics Journal, vol. 6, no. 3, 6600307, Jun. 2014.
      125. Yuji Wada, Tribikram Kundu, Kentaro Nakamura. Mesh-free distributed point source method for modeling viscous fluid motion between disks vibrating at ultrasonic frequency, Journal of the Acoustical Society of America, vol.136, no.2, pp.466-474, Jun. 2014.
      126. Ryota Kashima, Soichi Murakami, Daisuke Koyama, Kentaro Nakamura, Mami Matsukawa. Design of a junction for a noncontact ultrasonic transportation system, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 61, no. 6, pp. 1024-1032, Jun. 2014.
      127. Yukako Kato, Yuji Wada, Yosuke Mizuno, Kentaro Nakamura. Measurement of elastic wave propagation velocity near tissue surface by optical coherence tomography and laser Doppler velocimetry, Japanese Journal of Applied Physics, vol. 53, no. 7s, pp. 07KF05-1 - 07KF05-3, Jun. 2014.
      128. Neisei Hayashi, Hideyuki Fukuda, Yosuke Mizuno, Kentaro Nakamura. Observation of Brillouin gain spectrum in tapered polymer optical fiber, Journal of Applied Physics, vol. 115, pp. 173108-1-17310-3, May 2014.
      129. Kazunari Minakawa, Kotaro Koike, Neisei Hayashi, Yasuhiro Koike, Yosuke Mizuno, Kentaro Nakamura. Dependence of Brillouin frequency shift on temperature in poly(pentafluorostyrene)-based polymer optical fibers estimated by acoustic velocity measurement, IEICE Electronics Express, vol. 11, no. 10, p. 20140285, May 2014.
      130. Kyung-Su Kim, Yosuke Mizuno, Kentaro Nakamura. Fiber-optic ultrasonic hydrophone using short Fabry-Perot cavity with multilayer reflectors deposited on small stub, Ultrasonics, vol. 54, no. 4, pp. 1047-1051, Apr. 2014.
      131. Yosuke Mizuno, Neisei Hayashi, Hiroki Tanaka, Kentaro Nakamura, Shin-ichi Todoroki. Propagation mechanism of polymer optical fiber fuse, Scientific Reports, vol. 4, p. 4800, Apr. 2014.
      132. Kazunari Minakawa, Neisei Hayashi, Yuri Shinohara, Masaki Tahara, Hideki Hosoda, Yosuke Mizuno, Kentaro Nakamura. Wide-range temperature dependences of Brillouin scattering properties in polymer optical fiber, Japanese Journal of Applied Physics, vol. 53, no. 4, pp. 042502-1-042502-4, Mar. 2014.
      133. Takahiko Ishii, Yosuke Mizuno, Daisuke Koyama, Kentaro Nakamura, Kana Harada, Yukiyoshi Uchida. Plate-shaped non-contact ultrasonic transporter using flexural vibration, Ultrasonics, vol. 54, no. 2, pp. 445-460, Feb. 2014.
      134. Marie Nakazawa, Takahiro Aoyagi, Masaya Tabarua, Kentaro Nakamura, Sadayuki Ueha. Experimental study of underwater transmission characteristics of high-frequency 30 MHz polyurea ultrasonic transducer, Ultrasonics, vol. 54, no.2, pp. 526-536, Feb. 2014.
      135. Hiraku Tabata, Shu Suematsu, Kenji Yoshida, Yukako Kato, Daisuke Koyama, Kentaro Nakamura, Yoshiaki Watanabe. Destruction of polylactic acid microcapsules under ultrasound irradiation, Applied Acoustics, vol. 78, no. 4, pp. 89-91, Feb. 2014.
      136. Yosuke Mizuno, Neisei Hayashi, Hiroki Tanaka, Kentaro Nakamura, Shin-ichi Todoroki. Observation of polymer optical fiber fuse, Applied Physics Letters, vol. 104, no. 4, pp. 043302-1 - 043302-4, Jan. 2014.
      137. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Improved technique for etching overcladding layer of perfluorinated polymer optical fibre by chloroform and water, Electronics Letters, vol. 49, no. 25, pp. 1630-1632, Dec. 2013.
      138. Xinhua Guo, Yosuke Mizuno, Kentaro Nakamura. Object characterization based on multispectral acoustic imaging, Japanese Journal of Applied Physics, vol. 52, pp. 127301-1-5, Nov. 2013.
      139. Takehiro Sugimoto, Akio Ando, Kazuho Ono, Yuichi Morita, Kosuke Hosoda, Daisaku Ishii, Kentaro Nakamura. A lightweight push-pull acoustic transducer composed of a pair of dielectric elastomer films, The Journal of the Acoustical Society of America, vol. 134, no. 5, pp. EL432-EL437, Nov. 2013.
      140. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Characterization of stimulated Brillouin scattering in polymer optical fibers based on lock-in-free pump–probe technique, Journal of Lightwave Technology, vol. 31,no. 19, pp. 3162-3166, Oct. 2013.
      141. Marie Nakazawa, Masaya Tabaru, Takahiro Aoyagi, Kentaro Nakamura, Sadayuki Ueha. Thickness design, fabrication, and evaluation of 100-MHz polyurea ultrasonic transducer, IEEE Transactions on Ultrasonics, FerroelectrIcs, and Frequency Control, vol. 60, no. 10, pp. 2175-2188, Oct. 2013.
      142. Hiroki Tanaka, Yuji Wada, Yosuke Mizuno, Kentaro Nakamura. Behavior of ultrasonically levitated object above reflector hole, Japanese Journal of Applied Physics, vol. 52, no. 10, pp. 100201-1 - 3, Sep. 2013.
      143. Yuji Wada, Daisuke Koyama, Kentaro Nakamura. Finite-element analysis of acoustic streaming generated between a bending transducer and a reflector through second-order approximated forces, Acoustical Science and Technology vol. 34, no. 5, pp. 322-331, Aug. 2013.
      144. Xinhua Guo, Yuji Wada, Yosuke Mizuno, Kentaro Nakamura. RGB representation of two-dimensional multi-spectral acoustic data for object surface profile imaging, Measurement Science and Technology, vol. 24, pp. 1-7, Aug. 2013.
      145. Koji Mino, Manami Kataoka, Kenji Yoshida, Daisuke Koyama, Kentaro Nakamura, Masayoshi Omori, Shigeki Kawarabata, Masafumi Sato, Yoshiaki Watanabe. Ultrasound bubble filter using the flexural vibration of a cylinder for an extracorporeal circulation circuit, Sensors and Actuators A: Physical, vol. 199, pp. 202-208, Jun. 2013.
      146. Ryohei Nakamura, Yosuke Mizuno, Kentaro Nakamura. Demonstration of noncontact ultrasonic mixing of droplets, Japanese Journal of Applied Physics, vol. 52, no. 7, pp. 07HE02-1 - 07HE02-4, Jun. 2013.
      147. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Fast flaw detection in polymer optical fibers with infrared thermometer, Applied Physics Express, vol. 6, pp. 076601-1 - 076601-3, Jun. 2013.
      148. Mingjie Ding, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Brillouin gain spectrum dependences on temperature and strain in erbium-doped optical fibers with different erbium concentrations, Applied Physics Letters, vol. 102, pp. 191906-1-4, May 2013.
      149. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Broad and flat Brillouin gain spectrum in optical fiber obtained by modulating driving current of laser diode, Japanese Journal of Applied Physics, vol. 52, pp. 058003-1～2, Apr. 2013.
      150. Wei Qiu, Yosuke Mizuno, Daisuke Koyama, Kentaro Nakamura. Efficiency improvement of hybrid transducer-type ultrasonic motor using lubricant, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 60, no. 4, pp. 786-794, Apr. 2013.
      151. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Brillouin scattering signal in polymer optical fiber enhanced by exploiting pulsed pump with multimode-fiber-assisted coupling technique, Optic Letters, vol. 38, no. 9, pp. 1467-1469, Apr. 2013.
      152. Kazunari Minakawa, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Potential applicability of Brillouin scattering in partially chlorinated polymer optical fibers to high-precision temperature sensing, Applied Physics Express, vol. 6, pp. 052501-1～4, Apr. 2013.
      153. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Observation of stimulated Brillouin scattering in silica graded-index multimode optical fibre based on pump-probe technique, Electronics Letters, vol. 49, no. 5, pp. .366-367, Feb. 2013.
      154. Shinji Sato, Yuji Wada, Daisuke Koyama, Kentaro Nakamura. Estimation of absolute sound pressure in a small-sized sonochemical reactor, Ultrasonics Sonochemistry, vol. 20, pp. 468–471, Jan. 2013.
      155. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Polarisation state optimisation in observing Brillouin scattering signal in polymer optical fibres, Electronics Letters, vol. 49, no. 1, pp. 56-57, Jan. 2013.
      156. Daisuke Koyama, Megumi Hatanaka, Kentaro Nakamura, Mami Matsukawa. Ultrasonic optical lens array with variable focal length and pitch, Optics Letters, vol. 37, no. 24, pp. 5256-5258, Dec. 2012.
      157. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Simple coupling method for enhancing Brillouin scattering signal in polymer optical fibres, Electronics Letters, vol. 48, no. 20, pp. 1300-1301, Sep. 2012.
      158. Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura. Brillouin gain spectrum dependence on large strain in perfluorinated graded-index polymer optical fiber, Optics Express, vol. 20, no. 12, pp. 21101-21106, Sep. 2012.
      159. Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura. Dependences of Brillouin frequency shift on strain and temperature in optical fibers doped with rare-earth ions, Journal of Applied Physics, vol. 112, no. 4, pp. 043109-1-5, Sep. 2012.
      160. Yosuke Mizuno, Philipp Lenke, Katerina Krebber, Kentaro Nakamura. Characterization of Brillouin gain spectra in polymer optical fibers fabricated by different manufacturers at 1.32 and 1.55 µm, IEEE Photonics Technology Letters, vol. 24, no. 17, pp. 1496-1498, Sep. 2012.
      161. Kyung-Su Kim, Yosuke Mizuno, Kentaro Nakamura. High-speed measurement of refractive index using dielectric multilayer films deposited on optical fiber end, Japanese Journal of Applied Physics, vol. 51, no. 8, pp. 080202-1-2, Aug. 2012.
      162. Mingjie Ding, Daisuke Koyama, Kentaro Nakamura. Noncontact ultrasonic transport of liquid using a flexural vibration plate, Applied Physics Express, vol. 5, no. 9, pp. 097301-1-3, Aug. 2012.
      163. Iwaki Akiyama, Natsuki Yoshizumi, Shigemi Saito, Yuji Wada, Daisuke Koyama, Kentaro Nakamura. Development of multiple-frequency ultrasonic imaging system using multiple resonance piezoelectric transducer, Japanese Journal of Applied Physics, vol. 51, no. 7S, pp. 07Gf02-1-9, Jul. 2012.
      164. Yosuke Mizuno, Kentaro Nakamura. Enchancement of Brillouin scattering signal in optical fibers by use of pulsed pump light, Applied Physics Express, vol. 5, pp. 032501-1-3, Mar. 2012.
      165. Neisei Hayashi, Yosuke Mizuno, Daisuke Koyama, Kentaro Nakamura. Dependence of Brillouin frequencey shift on temperature and strain in poly(methyl methacrylate)-based polymer optical fibers estimated by acoustic velocity measurement, Applied Physics Express, vol. 5, pp. 032502-1-3, Mar. 2012.
      166. Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura. Ultrasonic variable-focus optical lens using viscoelastic material, Applied Physics Letters, vol. 100, no.9, pp. 091102-1-3, Feb. 2012.
      167. Yosuke Mizuno, Kentaro Nakamura. Enchancement of Brillouin scattering signal in perfluorinated graded-index polymer optical fibers, Applied Sciences, vol. 2, pp. 46-60, Jan. 2012.
      168. Yosuke Mizuno, Takaaki Ishigure, Kentaro Nakamura. Brillouin gain spectrum characterization in perfluorinated graded-index polymer optical fiber with 62.5-μm core diameter, IEEE Photonics Technology Letters, vol. 23, no. 24, pp. 1863-1865, Dec. 2011.
      169. Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura. Three-dimensional variable-focus liquid lens using acoustic radiation force, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 58, no. 12, pp. 2720-2726, Dec. 2011.
      170. 高野昌宏, 廣崎憲一, 滝本幹夫, 市村悟, 中村健太郎. 座屈並行版ばねを用いた超音波リニアモータの保持・加圧機構, 日本機械学会論文集（Ｃ編）, vol. 77, no. 783, pp. 184-194, Nov. 2011.
      171. Kyung-Su Kim, Yosuke Mizuno, Masayuki Nakano, Seiichi Onoda, Kentaro Nakamura. Refractive index sensor for liquids and solids using dielectric multilayer films deposited on optical fiber end surface, IEEE Photonics Technology Letters, vol. 23, no. 20, pp. 1472-1474, Oct. 2011.
      172. Yosuke Mizuno, Kentaro Nakamura. Core alignment of butt coupling between single-mode and multimode optical fibers by monitoring Brillouin scattering signal, Journal of Lightwave Technology, vol. 29, no. 17, pp. 2616-2620, Sep. 2011.
      173. Neisei Hayashi, Yosuke Mizuno, Daisuke Koyama, Kentaro Nakamura. Measurement of acoustic velocity in poly(methyl methacrylate)-based polymer optical fiber for Brillouin frequency shift estimation, Applied Physics Express, vol. 4, pp. 102501-1ー10250-3, Sep. 2011.
      174. Takeshi Iino, Kentaro Nakamura. Density dependence of acoustic chanracteristics of silica nanofoam, Acoustical Science and Technology, vol. 32, no. 4, pp. 132-136, Jul. 2011.
      175. Taisuke Yoshikawa, Hironori Kotera, Kenji Yoshida, Daisuke Koyama, Kentaro Nakamura, Yoshiaki Watanabe. Measurement of the resonant characteristics of a single bubble vibration by using a laser doppler vibrometer, Japanese Journal of Applied Physics, vol. 50, no. 7S, pp. 07HE04-1-3, Jul. 2011.
      176. Masahiro Takano, Kenichi Hirosaki, Mikio Takimoto, Satoru Ichimura, Kentaro Nakamura. Improvements in controllability of ultrasonic linear motors by longitudinal-bending multilayered transducer with independent electrodes, Japanese Journal of Applied Physics, vol. 50, no. 7S, pp. 07HE25-1-6, Jul. 2011.
      177. Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura. High-speed focus scanning by an acoustic variable-focus liquid lens, Japanese Journal of Applied Physics, vol. 50, no. 7S, pp. 07HE26-1-5, Jul. 2011.
      178. Yosuke Mizuno, Masato Kishi, Kazuo Hotate, Takaaki Ishigure, Kentaro Nakamura. Observation of stimulated Brillouin scattering in polymer optical fiber with pump-probe technique, Optics Letters, vol. 36, no. 12, pp. 2378-2380, Jun. 2011.
      179. Yosuke Mizuno, Kentaro Nakamura. Brillouin scattering in polymer optical fibers: fundamental properties and potential use in sensors, Polymers, vol. 3, no. 2, pp. 886-898, May 2011.
      180. Masahiro Takano, Mikio Takimoto, Kentaro Nakamura. Electrode design of multilayered piezoelectric transducers for longitudinal-bending ultrasonic actuators, Acoustical Science and Technology, vol. 32, no. 3, pp. 100-108, May 2011.
      181. Daisuke Koyama, Hironori Kotera, Natsuko Kitazawa, Kenji Yoshida, Kentaro Nakamura, Yoshiaki Watanabe. Vibration of a single microcapsule with a hard plastic shell in an acoustic standing wave field, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 58, no. 4, 737-743, Apr. 2011.
      182. Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura. Liquid lens using acoustic radiation force, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 58, no. 3, pp. 596-602, Mar. 2011.
      183. Yosuke Mizuno, Weiwen Zou, Kentaro Nakamura. Fresnel reflection spectra at multimode optical fiber ends with heterodyne detection, Applied Physics Express, vol. 4, no. 1, pp. 012501-3, Jan. 2011.
      184. Yosuke Mizuno, Kentaro Nakamura. Potential of Brillouin scattering in polymer optical fiber for strain-insensitive high-accuracy temperature sensing, Optics Letters, vol. 35, no. 23, pp. 3985-3987, Nov. 2010.
      185. Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura. Compact, high-speed variable-focus liquid lens using acoustic radiation force, Optics Express, vol. 18, no. 24, pp. 25158-25169, Nov. 2010.
      186. Yu Ito, Daisuke Koyama, Kentaro Nakamura. High-speed noncontact ultrasonic transport of small objects using acoustic traveling wave field, Acoustical Science and Technology, vol. 31, no. 6, pp. 420-422, Nov. 2010.
      187. Daisuke Koyama, Kentaro Nakamura. Array configurations for higher power generation in piezoelectric energy harvesting, Japanese Journal of Applied Physics, vol. 49, no. 7S, pp. 07HD04-1～5, Jul. 2010.
      188. Yosuke Mizuno, Kentaro Nakamura. Experimental study of Brillouin scattering in perfluorinated polymer optical fiber at telecommunication wavelength, Applied Physics Letters, vol. 97, no. 2, pp. 021103-1～3, Jul. 2010.
      189. Takahiro Aoyagi, Daisuke Koyama, Kentaro Nakamura, Marie Tabaru. Equivalent circuit analysis and design of multilayered polyurea ultrasonic transducers, Japanese Journal of Applied Physics, vol. 49, no. 7S, pp. 07HD05-1-5, Jul. 2010.
      190. Yuji Wada, Daisuke Koyama, Kentaro Nakamura. Finite element analysis of acoustic streaming in an ultrasonic air pump, Japanese Journal of Applied Physics, vol. 49, no. 7S, pp. 07HE15-1～6, Jul. 2010.
      191. Daisuke Koyama, Kentaro Nakamura. Noncontact ultrasonic transportation of small objects in a circular trajectory in air by flexural vibrations of a circular disc, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 57, no. 6, pp. 1434-1442, Jun. 2010.
      192. Daisuke Koyama, Kentaro Nakamura. Noncontact ultrasonic transportation of small objects over long distances in air using a bending vibrator and a reflector, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 57, no. 5, pp. 1152-1159, May 2010.
      193. Daisuke Koyama, Kentaro Nakamura. Electric power generation using vibration of a polyurea piezoelectric thin film, Applied Acoustics, vol. 71, no. 5, pp. 439-445, May 2010.
      194. 梅田幹雄, 遠藤雄哉, 佐藤拓史, 中村健太郎. 電圧掃引駆動時における圧電振動子の跳躍・降下現象の解析, 日本音響学会誌, vol. 66, no. 5, pp. 197-202, May 2010.
      195. Daisuke Koyama, Yuji Wada, Kentaro Nakamura, Masato Nishikawa, Tatsuyuki Nakagawa, Hitoshi Kihara. An ultrasonic air pump using an acoustic traveling wave along a small air gap, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 57, no. 1, pp. 253-261, Jan. 2010.