Journals

  1. Y. Kuroda, Y. Harada, A. Emoto, M. Matsukawa, D. Koyama, Frequency characteristics of an ultrasonic varifocal liquid crystal lens, Appl. Opt. Vol. 63. No. 9, pp. 2256-2262 (2024)
  2. Y. Kuroda, A. Emoto, D. Koyama, Acousto-thermal birefringence of iron(III) chloride using ultrasound flexural standing wave, Jpn. J. Appl. Phys., Vol. 63, No. 2, p. 028002 (2024)
  3. Y. Harada, M. Ishikawa, Y. Kuroda, M. Matsukawa, D. Koyama, Giant static refractive index gradient induced by strong ultrasonic wave, Appl. Phys. Lett., Vol. 124, No. 1, p. 011102 (2024) 
  4. R. Kobayashi, J. Narita, N. Nakaoka, M. P. Krafft, D. Koyama, Quantitative estimation of phospholipid molecules desorbed from a microbubble surface under ultrasound irradiation, Sci. Rep., Vol. 13, p. 13693 (2023)
  5. T. Shimada, K. Matsubara, D. Koyama, M. Matsukawa, M. Ohsaki, Y. Kobayashi, K. Saito, H. Yamagami, Development of evaluation system for cerebral artery occlusion in emergency medical services: noninvasive measurement and utilization of pulse waves, Sci. Rep., Vol. 13, p. 3339 (2023)
  6. R. Kobayashi, J. Narita, M. P. Krafft, D. Koyama, Effects of a DMPC molecular film surrounding microbubbles on the sound-pressure threshold for collapse, Jpn. J. Appl. Phys., Vol. 62, No. SJ, p. SJ8006 (2023) 
  7. N. Nakaoka, E. Yakamoto, R. Tomita, D. Koyama, A thin acoustic touchless sensor using flexural vibration, Jpn. J. Appl. Phys., Vol. 62, No. SJ, p. SJ1017 (2023) 
  8. Y. Kuroda, Y. Harada, J. Onaka, A. Emoto, M. Matsukawa, D. Koyama, How to fix an ultrasonic variable-focus liquid crystal lens for substrate-mountable applications, Jpn. J. Appl. Phys., Vol. 62, No. SJ, p. SJ8004 (2023)
  9. N. Nakaoka, E. Yamamoto, D. Koyama, Acoustic touchless sensor using the flexural vibration of a plate, Jpn. J. Appl. Phys., Vol. 62, No. 2, p. 026501 (2023)
  10. H. Tabata, D. Koyama, M. Matsukawa, M. P. Krafft, K. Yoshida, Concentration-dependent viscoelasticity of poloxamer-shelled microbubbles, Langmuir, Vol. 39, No. 1, pp. 433-441 (2023) 
  11. N. Nakaoka, H. Komatsu, R. Kobayashi, M. Matsukawa, D. Koyama, Control of the surface profile of powder using the flexural vibration of a V-shaped plate, Ultrasonics, Vol. 127, No. 1, p. 106848 (2023) 
  12. Y. Kuroda, T. Iwase, J. Onaka, Y. Harada, A. Emoto, M. Matsukawa, D. Koyama, Effects of the interlayer thickness on the optical characteristics of an ultrasound multilayered liquid crystal lens, Appl. Phys. Express, Vol. 15, No. 12, p. 122004 (2022)
  13. S. Hashimoto, Y. Harada, K. Nakamura, T. Iwase, J. Onaka, M. Matsukawa, D. Koyama, Varifocal concave-convex lens using viscoelastic gel and ultrasound vibration, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 69, No. 9, pp. 2703-2710 (2022)
  14. T. Iwase, Y. Kuroda, J. Onaka, A. Emoto, M. Matsukawa, D. Koyama, Orientation angles of liquid crystals via ultrasound vibrations, Jpn. J. Appl. Phys., Vol. 61, No. 6, p. 068002 (2022) 
  15. J. Onaka, T. Iwase, A. Emoto, D. Koyama, M. Matsukawa, Optical evaluation of a double-layered ultrasound liquid crystal lens, J. Appl. Phys., Vol. 131, No. 19, p. 193103 (2022)  
  16. T. Iwase, J. Onaka, A. Emoto, D. Koyama, M. Matsukawa, Relationship between liquid crystal layer thickness and variable-focusing characteristics of an ultrasound liquid crystal lens, Jpn. J. Appl. Phys., Vol. 61, No. SG, p. SG1013 (2022) 
  17. J. Onaka, T. Iwase, A. Emoto, D. Koyama, M. Matsukawa, Ultrasound liquid crystal lens with a variable focus in the radial direction for image stabilization, Appl. Opt., Vol. 60, No. 33, pp. 10365-10371 (2021) 
  18. H. Suzuki, A. Emoto, N. Furuso, D. Koyama, M. Ishikawa, Polarization information landscapes expanded from single-shot images of ring-like diffraction patterns, OSA Continuum, Vol. 4, No. 11, pp. 2796-2804 (2021) 
  19. H. Maruyama, K. Fujiwara, M. Kumeta, D. Koyama, Ultrasonic control of neurite outgrowth direction, Sci. Rep., Vol. 11, p. 20099 (2021)
  20. R. Akashi, A. Hirayama, D. Koyama,  Quantitative evaluation of the mortality rate of HeLa cells induced by microbubble vibration and collapse under pulsed ultrasound irradiation, Physics in Medicine, Vol. 12, p. 100041 (2021) 
  21. D. Sakata, T. Iwase, J. Onaka, D. Koyama, M. Matsukawa, Varifocal optical lens using ultrasonic vibration and thixotropic gel, J. Acoust. Soc. Am., Vol. 149, No. 6, pp. 3954-3960 (2021) 
  22. J. Onaka, T. Iwase, M. Fukui, D. Koyama, M. Matsukawa, Ultrasound liquid crystal lens with enlarged aperture using traveling waves, Opt. Lett., Vol. 46, No. 5, pp. 1169-1172 (2021) 
  23. T. Nakamura, M. Takata, I. Michimoto, D. Koyama, M. Matsukawa, Site dependence of ultrasonically induced electrical potentials in bone, JASA Express Letters, Vol.1, Issue. 1, p. 012002 (2021)
  24. N. Murashima, I. Michimoto, D. Koyama, M. Matsukawa, Anisotropic longitudinal wave propagation in swine skull, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol.68, No. 1, pp. 65-71 (2021)
  25. D. Sakata, T. Misaki, M. Saeki, T. Kikkawa, D. Koyama, M. Matsukawa, Evaluation of measurement accuracy of piezoelectric particle sizer using resonance flexural vibration modes of circular disc, Acoust. Sci. & Tech., Vol.41, No. 6, pp. 891-899 (2020)
  26. T. Makino, T. Nakamura, L. Bustamante, S. Takayanagi, D. Koyama, M. Matsukawa, Piezoelectric and inversely piezoelectric responses of bone tissue plates in the megaheltz range, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 67, No. 8, pp. 1525-1532 (2020)
  27. Y. Harada, D. Koyama, M. Fukui, A. Emoto, K. Nakamura, M. Matsukawa, Molecular orientation in a variable-focus liquid crystal lens induced by ultrasound vibration, Sci. Rep., Vol. 10, p. 6168 (2020)
  28. K. Masuda, H. Komatsu, D. Koyama, M. Matsukawa, Control of the surface profile of a thixotropic fluid with ultrasound, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 67, No. 1, pp. 117-123 (2020)
  29. H. Tabata, D. Koyama, M. Matsukawa, K. Yoshida, M. P. Krafft, Vibration characteristics and persistence of poloxamer- or phospholipid-coated single microbubbles under ultrasound irradiation, Langmuir, Vol. 35, No. 35, pp. 11322-11329 (2019)
  30. M. Nakata, N. Tanimura, D. Koyama, M. P. Krafft, Adsorption and desorption of a phospholipid from single microbubbles under pulsed ultrasound irradiation for ultrasound-triggered drug delivery, Langmuir, Vol. 35, No. 31, pp. 10007-10013 (2019)
  31. T. Otsuka, D. Koyama, M. Matsukawa, Transportation and discrimination of cells using ultrasound flexural vibration of aglass substrate, Jpn. J. Appl. Phys., Vol. 58, No. SG, p. SGGD10 (2019)
  32. K. Tani, K. Fujiwara, D. Koyama, Adhesive cell patterning technique using ultrasound vibrations, Ultrasonics, Vol. 96, No. 7, pp. 18-23 (2019)
  33. K. Masuda, D.Koyama, M. Matsukawa, Noncontact transportation of planar object in an ultrasound waveguide, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 65, No. 11, pp.2160-2166 (2018)
  34. Y. Shimizu, D. Koyama, M. Fukui, A. Emoto, K. Nakamura, M. Matsukawa, Ultrasound liquid crystal lens, Appl. Phys. Lett., Vol.112, No. 16, p.161104 (2018)
  35. S. Mori, T. Makino, D. Koyama, S. Takayanagi,T. Yanagitani, M. Matsukawa, Ultrasonically-induced potentials in demineralized bovine cortical bone, AIP Advances, Vol. 8, p.045007 (2018)
  36. Y. Shimizu, D. Koyama, S. Taniguchi, A. Emoto, K. Nakamura, M. Matsukawa, Periodic pattern of liquid crystal molecular orientation induced by ultrasound vibrations, Appl. Phys. Lett., Vol.111, No. 23, p. 231101 (2017)
  37. M. Hayashi, T. Kikkawa, D. Koyama, M. Matsukawa, Piezoelectric particle sizer for measuring bed load using a combination of resonance vibration modes, Sens. Actuators A, Phys., Vol.267, pp. 150-155 (2017)
  38. K. Hirata, T. Kubota, D. Koyama, S. Takayanagi, M. Matsukawa, Fabrication of oriented hydroxyapatite film by RF magnetron sputtering, AIP Advances, Vol. 7, pp. 085219-1-5 (2017)
  39. K. Tani, M. Imura, D. Koyama, Y. Watanabe, Quantitative evaluation of hemolysis on bovine red blood cells caused by acoustic cavitation under pulsed ultrasound, Acoust. Sci. & Tech.,Vol. 38, No. 3, pp.161-164 (2017)
  40. R. Yamamoto, D. Koyama, M. Matsukawa, On-chip ultrasonic manipulation of microparticles by using the flexural vibration of a glass substrate, Ultrasonics, Vol. 79, No. 8, pp.81-86 (2017)
  41. S. Matsukawa, T. Makino, S. Mori, D. Koyama, S. Takayanagi, K. Mizuno, T. Yanagitani, M. Matsukawa, Effect of anisotropy on stress-induced electrical potentials in bovine bone using ultrasound irradiation, Appl. Phys. Lett., Vol. 110, No. 14, p.143701 (2017)
  42. Y. Ando, H. Tabata, M. Sanchez, A. Cagna, D. Koyama, M. P. Krafft, Microbubbles with a self-assembled poloxamer shell and a fluorocarbon inner gas, Langmuir, Vol.32, No. 47, pp. 12461-12467 (2016)
  43. K. Imade, T. Kageyama, D. Koyama, Y. Watanabe, K. Nakamura, I. Akiyama, Measurement of sound pressure and temperature in tissue-mimicking material using an optical fiber Bragg grating sensor, J. Med. Ultrason., Vol. 43, No. 4, pp. 473-479 (2016)
  44. Y. Wada, D. Koyama, K. Nakamura, Numerical simulation of compressible fluid flow on an ultrasonic suction pump, Ultrasonics, Vol. 70, No. 8, pp. 191-198 (2016)
  45. S. Taniguchi, D. Koyama, Y. Shimizu, A. Emoto, K. Nakamura, M. Matsukawa, Control of liquid crystal molecular orientation using ultrasound vibration, Appl. Phys. Lett., Vol. 108, No.10, p. 101103 (2016)
  46. D. Koyama, Y. Kashihara, M. Hatanaka, K. Nakamura, M. Matsukawa, Movable optical lens array using ultrasonic vibration, Sens. Actuators A, Phys., Vol. 237, No. 1, pp. 35-40 (2016)
  47. R. Kashima, D. Koyama, M. Matsukawa, Two-dimensional noncontact transportation of small objects in air using flexural vibration of a plate, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 62, No. 12, pp. 2161-2168 (2015)
  48. K. Yoshida, S. Morioka, Y. Kagawa, D. Koyama, Y. Watanabe, Power-law dependence describing subharmonic generation from a non-spherically oscillating bubble, Acoust. Sci. & Tech., Vol.36, No. 3, pp. 191-200 (2015)
  49. S. Taniguchi, D. Koyama, K. Nakamura, M. Matsukawa, Fabrication of an optical lens array using ultraviolet light and ultrasonication, Ultrasonics, Vol. 58, No. 4, pp. 22-26 (2015)
  50. K. Mino, M. Imura, D. Koyama, M. Omori, S. Kawarabata, M. Sato, Y. Watanabe, Meshless bubble filter using ultrasound for extracorporeal circulation and its effect on blood, Ultrasound Med. Biol., Vol. 41, No. 2, pp. 465-471 (2015)
  51. Y. Wada, D. Koyama, K. Nakamura, Acoustic streaming in an ultrasonic air pump with three-dimensional finite-difference time-domain analysis and comparison to the measurement, Ultrasonics, Vol. 54, No. 8, pp. 2119-2125 (2014)
  52. R. Kashima, S. Murakami, D. Koyama, K. Nakamura, M. Matsukawa, Design of a junction for a noncontact ultrasonic transportation system, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 61, No. 6, pp. 1024-1032 (2014)
  53. H. Tabata, S. Suematsu, Y. Kato, K. Yoshida, D. Koyama, K. Nakamura, Y. Watanabe, Destruction of polylactic acid microcapsules under ultrasound irradiation, Appl. Acoust., Vol. 78, No. 4, pp. 89-91 (2014)
  54. T. Ishii, Y. Mizuno, D. Koyama, K. Nakamura, K. Harada, Y, Uchida, Plate-shaped non-contact ultrasonic transporter using flexural vibration, Ultrasonics, Vol. 54, No. 2, pp. 455-460 (2014)
  55. Y. Wada, D. Koyama, K. Nakamura, Finite-element analysis of acoustic streaming generated between a bending transducer and a reflector through second-order approximated forces, Acoust. Sci. & Tech., Vol. 34, No. 5, pp. 322-331 (2013)
  56. K. Mino, M. Kataoka, K. Yoshida, D. Koyama, K. Nakamura, M. Omori, S. Kawarabata, M. Sato, Y. Watanabe, Ultrasound bubble filter using the flexural vibration of a cylinder for an extracorporeal circulation circuit, Sens. Actuators A, Phys., Vol. 199, pp. 202-208 (2013)
  57. W. Qiu, Y. Mizuno, D. Koyama, K. Nakamura, Efficiency improvement of hybrid transducer-type ultrasonic motor using lubricant, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 60, No. 4, pp. 786-794 (2013)
  58. S. Sato, Y. Wada, D. Koyama, K. Nakamura, Estimation of absolute sound pressure in a small-sized sonochemical reactor, Ultrasonics Sonochemistry, Vol. 20, No. 1, pp. 468-471 (2013)
  59. D. Koyama, M. Hatanaka, K. Nakamura, M. Matsukawa, Ultrasonic optical lens array with variable focal length and pitch, Opt. Lett., Vol. 37, No. 24, pp. 5256-5258 (2012)
  60. M. Ding, D. Koyama, K. Nakamura, Noncontact ultrasonic transport of liquid using a flexural vibration plate, Appl. Phys. Express, Vol. 5, No. 9, p. 097301 (2012)
  61. I. Akiyama, N. Yoshizumi, S. Saito, Y. Wada, D. Koyama, K. Nakamura, Development of multiple-frequency ultrasonic imaging system using multiple resonance piezoelectric transducer, Jpn. J. Appl. Phys., Vol. 51, No. 7, pp. 07GF02-1-9 (2012)
  62. N. Hayashi, Y. Mizuno, D. Koyama, K. Nakamura, Dependence of Brillouin frequency shift on temperature and strain in poly(methyl methacrylate)-based polymer optical fibers estimated by acoustic velocity measurement, Appl. Phys. Express, Vol. 5, No. 3, p. 032502 (2012)
  63. D. Koyama, R. Isago, K. Nakamura, Ultrasonic variable-focus optical lens using viscoelastic material, Appl. Phys. Lett., Vol. 100, No. 9, p. 091102 (2012)
  64. D. Koyama, R. Isago, K. Nakamura, Three-dimensional variable-focus liquid lens using acoustic radiation force, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 58, No. 12, pp. 2720-2726 (2011)
  65. N. Hayashi, Y. Mizuno, D. Koyama, K. Nakamura, Measurement of acoustic velocity in poly(methyl methacrylate)-based polymer optical fiber for Brillouin frequency shift estimation, Appl. Phys. Express, Vol. 4, No. 10, p. 102501 (2011)
  66. D. Koyama, R. Isago K. Nakamura, High-speed focus scanning by an acoustic variable-focus liquid lens, Jpn. J. Appl. Phys., Vol. 50, No. 7, pp. 07HE26-1-5 (2011)
  67. T. Yoshikawa, K. Yoshida, D. Koyama, K. Nakamura, Y. Watanabe, Measurement of the resonant characteristics of a single bubble vibration by using a laser Doppler vibrometer, Jpn. J. Appl. Phys., Vol. 50, No. 7, pp. 07HE04-1-3 (2011)
  68. D. Koyama, H. Kotera, N. Kitazawa, K. Yoshida, K. Nakamura, Y. Watanabe, Vibration of a single microcapsule with a hard plastic shell in an acoustic standing wave field, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 58, No. 4, pp. 737-743 (2011)
  69. D. Koyama, R. Isago K. Nakamura, Liquid lens using acoustic radiation force, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 58, No. 3, pp. 596-602 (2011)
  70. D. Koyama, R. Isago K. Nakamura, Compact, high-speed variable-focus liquid lens using acoustic radiation force, Opt. Express, Vol. 18, No. 24, pp. 25158-25169 (2010)
  71. Y. Ito, D. Koyama K. Nakamura, High-speed noncontact ultrasonic transport of small objects using an acoustic traveling wave field, Acoust. Sci. & Tech., Vol. 31, No. 6, pp. 420-422 (2010)
  72. Y. Wada, D. Koyama, K. Nakamura, Finite element analysis of acoustic streaming in an ultrasonic air pump, Jpn. J. Appl. Phys., Vol. 49, No. 7, pp. 07HE15-1-6 (2010)
  73. T. Aoyagi, D. Koyama, K. Nakamura, M. Tabaru, Equivalent circuit analysis and design of multilayered polyurea ultrasonic transducers, Jpn. J. Appl. Phys., Vol. 49, No. 7, pp. 07HD05-1-4 (2010)
  74. D. Koyama, K. Nakamura, Array configurations for higher power generation in piezoelectric energy harvesting, Jpn. J. Appl. Phys., Vol. 49, No. 7, pp. 07HD04-1-5 (2010)
  75. D. Koyama, K. Nakamura, Noncontact ultrasonic transportation of small objects in a circular trajectory in air by flexural vibrations of a circular disc, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 57, No. 6, pp. 1434-1442 (2010)
  76. D. Koyama, K. Nakamura, Noncontact ultrasonic transportation of small objects over long distances in air using a bending vibrator and a reflector, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 57, No. 5, pp. 1152-1159 (2010)
  77. D. Koyama, K. Nakamura, Electric power generation using a vibration of a polyurea piezoelectric thin film, Appl. Acoust., Vol. 71, No. 5, pp. 439-445 (2010)
  78. D. Koyama, Y. Wada, K. Nakamura, M. Nishikawa, T. Nakagawa, H. Kihara, An ultrasonic air pump using an acoustic traveling wave along a small air gap, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 57, No. 1, pp. 253-261 (2010)
  79. Y. Goda, D. Koyama, K. Nakamura, Design of multi-degree-of-freedom ultrasonic micro motors, Jpn. J. Appl. Phys., Vol. 48, No. 7, pp. 07GM06-1-4 (2009)
  80. D. Koyama, K. Nakamura, Noncontact self-running ultrasonically levitated two-dimensional stage using flexural standing waves, Jpn. J. Appl. Phys., Vol.48, No. 7, pp. 07GM07-1-5 (2009)
  81. N. Yoshizumi, S. Saito, D. Koyama, K. Nakamura, A. Ohya, I. Akiyama, Multi-frequency ultrasonic imaging by transmitting pulsed waves of two frequencies, J. Med. Ultrasonics, Vol. 36, No. 2, pp. 53-60 (2009)
  82. Y. Goda, D. Koyama, K. Nakamura, S. Ueha, A 2 x 2 array the multi-degree-of freedom ultrasonic actuators for a low profile two-dimensional sliding table, IEICE Electronics Express, Vol. 6, No. 6, 317-321 (2009)
  83. 吉住夏輝、斎藤繁実、小山大介、中村健太郎、秋山いわき，二周波数駆動超音波振動子のビーム特性，電子情報通信学会論文誌，Vol. J-91-A, No. 12, pp.1152-1155 (2008)
  84. 武井裕之，小山大介，中村健太郎，上羽貞行，たわみ振動板と反射板による発生空気流量の改善，電子情報通信学会論文誌，Vol. J-91-A, No. 12, pp.1125-1133 (2008)
  85. D. Koyama, H. Takei, K. Nakamura, S. Ueha, A self-running standing wave-type bidirectional slider for the ultrasonically levitated thin linear stage, IEEE Trans. Ultrason., Ferroelect., Freq. Contr.,Vol. 55, No. 8, pp. 1823-1830 (2008)
  86. D. Koyama, K. Nakamura, S. Ueha, H. Takahashi, K. Nukui, K. Ikeda, A method for measuring liquid level using the flexural vibrations in a rod, Acoust. Sci. & Tech., Vol.29, No.4, pp. 274-282 (2008)
  87. T. Yoshino, D. Koyama, K. Nakamura, S. Ueha, K. Seino, Experimental study on an ultrasonic purification apparatus for civil engineering use, Jpn. J. Appl. Phys., Vol.47, No. 5, pp. 4296-4299 (2008)
  88. H. Takei, D. Koyama, K. Nakamura, S. Ueha, Air flow in a small gap between a bending vibrator and a reflector, Jpn. J. Appl. Phys., Vol.47, No. 5, pp. 4276-4281 (2008)
  89. T. Hasegawa, D. Koyama, K. Nakamura, S. Ueha, Modeling and performance evaluation of an ultrasonic suction pump, Jpn. J. Appl. Phys., Vol.47, No. 5, pp. 4248-4252 (2008)
  90. T. Hasegawa, D. Koyama, K. Nakamura, S. Ueha, A design of a miniature ultrasonic pump using a bending disk transducer, Journal of Electroceramics, Vol. 20, No. 3-4, pp. 145-151 (2008)
  91. X. Zhang, Y. Gouda, D. Koyama, K. Nakamura, S. Ueha, A basic design of robot finger joint using multi-degree-of-freedom ultrasonic motor, Acoust. Sci. & Tech., Vol. 29, No. 3, pp.235-237 (2008)
  92. O. Koyama, D. Koyama, K. Nakamura, S. Ueha, Ultrasonic linear motor using traveling vibration on fine ceramic twin ridges, Acoust. Sci. & Tech., Vol. 29, No. 1, pp. 95-98 (2008)
  93. D. Koyama, K. Nakamura, S. Ueha, A stator for a self-running ultrasonically levitated sliding stage, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 54, No. 11, pp. 2337-2343 (2007)
  94. T. Hasegawa, D. Koyama, K. Nakamura, S. Ueha, Improvement in the flow rate of a miniature ultrasonic suction pump, Jpn. J. Appl. Phys., Vol. 46, No. 7B, pp.4931-4935 (2007)
  95. D. Koyama, T. Ide, J. R. Friend, K. Nakamura, S. Ueha, An ultrasonically levitated non-contact stage using traveling vibrations on precision ceramic guide rails, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 54, No. 3, pp. 597-604 (2007)
  96. D. Koyama, A. Yagishita, K. Nakamura, S. Ueha, T. Fujimoto, Improved monitoring of intracranial echo-guided surgery: reduction of backscattering and recognition of the operating part using microcapsule vibration, Neurosonology, Vol. 19, No, 1, pp. 25-28 (2006)
  97. R. Isago, S. Domae, D. Koyama, K. Nakamura, S. Ueha, High-frequency optical scanner based on bending vibration of optical fiber, Jpn. J. Appl. Phys., Vol.45 pp.4773-4779 Part 1 No.5B (2006)
  98. D. Koyama, A. Osaki, W. Kiyan, Y. Watanabe, Acoustic destruction of a micro-capsule having a hard plastic shell, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Vol. 53, No. 7, pp. 1314-1321 (2006)
  99. D. Koyama, W. Kiyan, Y. Watanabe, Optical observation of microcapsule destruction in an acoustic standing wave, Jpn. J. Appl. Phys. Vol.43 pp.3215-3219 Part 1 No.5B (2004)
  100. D. Koyama, N. Barbier, Y. Watanabe, Shell effects on vibration behavior of a microcapsule in an acoustic field, Jpn. J. Appl. Phys. Vol.42 pp.6700-6704 Part1 No.10 (2003)
  101. 小山大介，酒井敦司，渡辺好章，ポアンカレマップによる分調波生成条件の検出とマイクロカプセルを用いたサブハーモニックイメージング，電子情報通信学会論文誌　Vol.84-A pp.1500-1507 (2001)
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