東京大学大学院 新領域創成科学研究科 人間環境学専攻 人間支援デバイス分野

東京大学大学院 新領域創成科学研究科 人間環境学専攻 人間支援デバイス分野

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研究業績

原著論文
学術講演発表(国際会議)
学術講演発表(国内会議)
受賞
その他

原著論文

  1. Xiaogang Wu, Kang CHEN, Yasushi HOSHIJIMA, Taro HARIU, Hiroki YAMAZAKI, Susumu MIYAKE and Takeshi MORITA, "High-power ultrasonic transducer for effective hemolysis", IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, accepted, 2021
  2. Tatsuki Sasamura, Abdullah Mustafa, Susumu Miyake and Takeshi Morita, “Backdrivability improvement of traveling wave ultrasonic motor torque control by reducing static friction”, Sensors and Actuators A, accepted, 2021
  3. Satori HACHISUKA, Hiroki YOKOZAWA, Fangyi WANG, Susumu MIYAKE, Jens TWIEFEL, and Takeshi MORITA, "Dynamic resonant frequency control system of ultrasonic transducer for non-sinusoidal waveform excitation", Sensors and Actuators A, vol. 332, 113124, 2021 (https://doi.org/10.1016/j.sna.2021.113124)
  4. Kang CHEN, Takasuke IRIE, Takashi IIJIMA, Takashi KASASHIMA, Kota YOKOYAMA, and Takeshi MORITA, "Selection criteria of piezoelectric materials for double-parabolic-reflectors ultrasonic transducers (DPLUS) for high-power ultrasound", Jpn. J. Appl. Phys., accepted, 2021, https://doi.org/10.35848/1347-4065/ac1fb9
  5. Kang CHEN, Takasuke IRIE, Takashi IIJIMA and Takeshi MORITA, "Double-parabolic-reflectors Ultrasonic Transducer with Flexible Waveguide for Minimally Invasive Treatment", IEEE. Trans. Biomed. Eng., vol.68, no.10, pp.2965-2973, 2021 (doi: 10.1109/TBME.2021.3057087)
  6. Qingyang LIU, Kang CHEN, JUNHUI HU and Takeshi MORITA, "An ultrasonic tweezer with multiple manipulation functions based on the double-parabolic-reflector wave-guided high-power ultrasonic transducer", IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 67, no. 11, pp.2471-2474, 2020
  7. Susumu Miyake, Tomohiro Harada, Hiroyuki Shimizu, Sumiaki Kishimoto Takeshi Morita, "High power characteristics of (Bi,Na)TiO3 -BaTiO3 ceramics and application for miniature ultrasonic motor", Sens. Mater., Vol. 32, No. 7, p. 2443-2452, 2020
  8. Kang CHEN, Takasuke IRIE, Takashi IIJIMA and Takeshi MORITA, "Wideband Multi-modes Excitation by one Double-parabolic-reflectors Ultrasonic Transducer (DPLUS)", IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 67, no. 8, pp. 1620-1631, 2020 (doi: 10.1109/TUFFC.2020.2978234)
  9. Shigeru ASANO, Shinji NISHIMURA, Yasuhisa IKEDA, Takeshi MORITA and Hiroshi HOSAKA, "Energy harvester for safety shoes using parallel piezoelectric links", Sensors and Actuators A, vol. 309, 112000, 2020 (https://doi.org/10.1016/j.sna.2020.112000)
  10. Yutaro TANOUE and Takeshi MORITA, "Rod drive type ultrasonic linearmotor with quadruped stator", Jpn. J. Appl. Phys., vol. 59 SKKD13, 2020 (https://doi.org/10.35848/1347-4065/ab85d9)
  11. Qingyang LIU, Kang CHEN, Junhui HU and Takeshi MORITA, "DPLUS based ultrasonic tweezers for micro/nano manipulation", Jpn. J. Appl. Phys., vol. 59, SKKD12, 2020 (https://doi.org/10.35848/1347-4065/ab827e)
  12. Yutaro TANOUE and Takeshi MORITA, "Opposing preloads type ultrasonic linear motor with quadruped stator", Sensors and Actuators A, vol. 301, 111764, 2020 (https://doi.org/10.1016/j.sna.2019.111764)
  13. Kang CHEN, Takasuke IRIE, Takashi IIJIMA and Takeshi MORITA, “Double-parabolic-reflectors acoustic waveguides for high-power medical ultrasound”, Scientific Reports, vol. 9, 18493, 2019 (doi:10.1038/s41598-019-54916-2)
  14. Jianping LI, Hu HUANG and Takeshi MORITA, "Stepping piezoelectric actuators with large working stroke: a review", Sensors and Actuators A, vol. 292, pp.39-51, 2019
  15. Abdullah MUSTAFA and Takeshi MORITA, "Dynamic preload control of traveling wave rotary ultrasonic motors for energy efficient operation", Jpn. J. Appl. Phys., vol.58, SGGD04, 2019 (https://doi.org/10.7567/1347-4065/ab0ba9)
  16. Abdullah MUSTAFA and Takeshi MORITA, "Efficiency optimization of rotary ultrasonic motors using extremum seeking control with current feedback", Sensors and Actuators A, vol. 289, pp. 26-33, 2019
  17. Kang CHEN, Takasuke IRIE, Takashi IIJIMA and Takeshi MORITA, "Acoustic focusing to the waveguides utilizing double parabolic reflectors", Appl. Phys. Lett., vol. 114, 072902, 2019
  18. Tien-Fu LU, Yimin FAN and Takeshi MORITA,"An investigation of piezoelectric actuator high speed operation for sensorless control", Measurement, vol.136, pp.105-115, 2019
  19. Susumu MIYAKE, Ryohei OZAKI, Hiroshi HOSAKA and Takeshi MORITA, "High-power piezoelectric vibration model considering the interaction between nonlinear vibration and temperature increase", Ultrasonics, vol. 93, pp. 93-101, 2019
  20. Susumu MIYAKE, Takashi KASASHIMA, Masato YAMAZAKI, Yasuyuki OKIMURA, Hajime NAGATA, Hiroshi HOSAKA and Takeshi MORITA, "Quantitative evaluation method for nonlinear characteristics of piezoelectric transducer under high stress with complex nonlinear elastic constant", Jpn. J. Appl. Phys., Vol. 57, 07LB14, 2018
  21. Hiroki YOKOZAWA, Yutaka DOSHIDA, Sumiaki KISHIMOTO and Takeshi MORITA, "Resonant-type smooth impact drive mechanism actuator using lead-free piezoelectric material", Sensors and Actuators A, vol. 274, pp. 179-183, 2018
  22. Ryohei OZAKI, YaoYang LIU, Hiroshi HOSAKA and Takeshi MORITA,"Piezoelectric nonlinear vibration focusing on the second-harmonic vibration mode", Ultrasonics, vol. 82, pp. 233-238, 2018
  23. Hiroki YOKOZAWA, Jens TWIEFEL, Michael WEISTEIN, Hiroshi HOSAKA and Takeshi MORITA, "Dynamic control of the resonant frequency of ultrasonic transducer", Sensors and Actuators, vol. 262, pp. 64-67, 2017
  24. Hiroki YOKOZAWA, Jens TWIEFEL, Michael WEINSTEIN and Takeshi MORITA, "Dynamic resonant frequency control of the ultrasonic transducer for stabilizing the resonant state in wide frequency band", Jpn. J. Appl. Phys., vol.56, 07JE08, 2017
  25. Tobias HEMSEL, Peter BORNMANN, Takeshi MORITA, Christoph Sondermann-WOLKE and Walter SEXTRO, "Reliability Analysis of Ultrasonic Power Transducers", Archive of Applied Mechanics, vol. 86, pp.1707-1713, 2016
  26. Katsuhiro SAIGUSA and Takeshi MORITA, "Optimum reaction conditions for lead zirconate titanate thick film by ultrasonic assisted hydrothermal method", Jpn. J. Appl. Phys., vol. 55, 07KC05, 2016
  27. Yaoyang LIU and Takeshi MORITA, "Simplified determination of nonlinear coefficients in piezoelectric transducers", Jpn. J. Appl. Phys., vol. 54, 10ND01, 2015
  28. Ryo KUDO, Peter BORNMANN, Tobias HEMSEL and Takeshi MORITA, "KNbO3 thick films deposited by ultrasonic assisted hydrothermal method", Acoustical Science and Technology, vol. 36, P 262-264, 2015
  29. Katsuhiro SAIGUSA and Takeshi MORITA, "Self-Sensing control of piezoelectric positioning stage by detecting permittivity", Sensors and Actuators A, vol. 226, Pages 76-80, 2015
  30. Yaoyang LIU and Takeshi MORITA, "Nonlinear coefficients in lead-free CuO-(K,Na)NbO3 transducers", Jpn. J. Appl. Phys., vol. 54, 07HC01, 2015
  31. Yaoyang LIU, Ryohei OZAKI and Takeshi MORITA, "Investigation of nonlinearity in piezoelectric transducers", Sensors and Actuators A, vol. 227,pp. 31-38, 2015
  32. Hiroki YOKOZAWA and Takeshi MORITA, "Wireguide driving actuator using resonant-type smooth impact drive mechanism", Sensors and Actuators A, vol. 230, pp. 40-44, 2015
  33. Gaku ISOBE, Takafumi MAEDA, Peter BORNMANN, Tobias HEMSEL and Takeshi MORITA, "Synthesis of lead-free piezoelectric powders by ultrasonic assisted hydrothermal method and properties of sintered (K0.48Na0.52)NbO3 ceramics", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol. 61, pp.225-230, Feb. 2014
  34. Yaoyang LIU, Takafumi MAEDA, Yuriko YOKOUCHI and Takeshi MORITA, "The hardening of CuO- (K, Na)NbO3 via post annealing with argon", Jpn. J. Appl. Phys., vol. 53, 015503, Jan. 2014
  35. Takami YOKOSE, Hiroshi HOSAKA, Ryuichi YOSHIDA and Takeshi MORITA, "Resonant frequency ratio control with an additional inductor for a miniaturized resonant-type SIDM actuator", Sensors and Actuators A, vol. 214, pp. 142-148, 2014
  36. Teppei UCHIHO, Kazuo UZUKA, Hideyuki SUENAGA and Takeshi MORITA, "Quartz force sensor and facing spiral coils for noncontact detection", Jpn. J. Appl. Phys. ,vol. 53, 07KD09, 2014
  37. Yukiko FUJIUCHI and Takeshi MORITA, "Domain orientation controlled potassium niobate family piezoelectric materials with hydrothermal powders", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol. 61, pp.1593-1598, 2014
  38. Kanako OHTA, Gaku ISOBE, Peter BORNMANN, Tobias HEMSEL and Takeshi MORITA, "Study on optimizing ultrasonic irradiation period for thick polycrystalline PZT film by hydrothermal method", Ultrasonics, vol. 53, pp. 837-841, 2013
  39. Yoichi KADOTA, Kazuhiko INOUE, Kazuo UZUKA, Hideyuki SUENAGA and Takeshi MORITA, "Non-contact operation of a miniature cycloid motor by magnetic force", IEEE Transactions on Mechatronics, vol. 18, pp.1563-1571, 2013
  40. Takeshi MORITA, Takuma NISHIMURA, Ryuichi YOSHIDA and Hiroshi HOSAKA, "Resonant-type SIDM actuator operating at lower input voltages", Jpn. J. Appl. Phys., vol. 52, 07HE05, 2013
  41. Yuriko YOKOUCHI, Takafumi MAEDA, Peter BORNMANN, Tobias HEMSEL and Takeshi MORITA, "Piezoelectric properties of CuO-doped (K,Na)NbO3 lead-free ceramics synthesized with hydrothermal powders", Jpn. J. Appl. Phys., vol. 52, 07HB03, 2013
  42. Florian SCHIEDECK and Takeshi MORITA, "Ultrasonic-assisted hydrothermal deposition of ferroelectric PbZrO3 thin film on NiTi-based superelastic shape memory alloys", Journal of Electroceramics, vol. 28, pp.45-52, 2012
  43. Takuma NISHIMURA, Hiroshi HOSAKA and Takeshi MORITA, "Resonant-type SIDM actuator using a bolt-clamped Langevin transducer", Ultrasonics, vol. 52, pp. 75-80, 2012
  44. Munesuke SUZUKI, Hiroshi HOSAKA and Takeshi MORITA, "Resonant type SIDM actuator with two Langevin transducers", Advanced Robotics, vol. 26, pp.227-290, 2012
  45. Yoichi KADOTA and Takeshi MORITA, "Fatigue and retention properties of shape memory piezoelectric actuator with non-180o domain switching", Smart Materials and Structures, vol. 21, 045002, 2012
  46. Takeshi MORITA, Hiroaki MURAKAMI, Takami YOKOSE and Hiroshi HOSAKA, "A miniaturized resonant type smooth impact drive mechanism actuator", Sensors and Actuators A,vol. 178, pp. 188-192, May 2012
  47. Hideyuki IKEDA, Yoichi KADOTA and Takeshi MORITA, "Preisach P-E hysteresis model with iteration method", Jpn. J. Appl. Phys., vol. 51, 09MD01, 2012
  48. Takafumi MAEDA, Tobias HEMSEL, and Takeshi MORITA, "Piezoelectric properties of Li-Doped (K0.48Na0.52)NbO3 ceramics synthesized using hydrothermally-derived KNbO3 and NaNbO3 fine powders", Jpn. J. Appl. Phys., vol. 51, 09MD08, 2012
  49. Yoichi KADOTA and Takeshi MORITA, "Preisach modeling of electric-field-Induced strain of ferroelectric material considering 90o domain switching", Jpn. J. Appl. Phys., vol. 51, 09LE08, 2012
  50. Jens TWIEFEL and Takeshi MORITA, "Utilizing multilayer lithium niobate elements for ultrasonic actuators", Sensors and Actuators, vol.166, pp.78-82, 2011
  51. Takafumi MAEDA ,Tobias HEMSEL and Takeshi MORITA, "Improved process for the hydrothermal lead-free piezoelectric powders and the performances of sintered (K0.48Na0.52)NbO3 ceramics", Jpn. J. Appl. Phys. vol. 50, 07HC01, 2011
  52. Hideyuki IKEDA and Takeshi MORITA, "High-precision positioning using a self-sensing piezoelectric actuator control with a differential detection method", Sensors and Actuators, vol. 170, 147-155, 2011
  53. Takafumi MAEDA, Norihito TAKIGUCHI, Mutsuo ISHIKAWA, Tobias HEMSEL and Takeshi MORITA, "(K,Na)NbO3 lead-free piezoelectric ceramics synthesized from hydrothermal powders", Materials Letters, vol. 64, pp. 125-128, 2010
  54. Yusuke ISHIKIRIYAMA and Takeshi MORITA, "Improvement of self-sensing piezoelectric actuator control using permittivity change detection", Journal of Advanced Mechanical Design, Systems, and Manufacturing (JSME), vol. 4, pp.143-149, 2010
  55. Takeshi MORITA and Tomoya OZAKI, "Magnetic force memory effect from a composite of a magnetostrictive material and a shape memory piezoelectric actuator", Sensors and Actuators, vol.161, pp.266-270, 2010
  56. Mutsuo ISHIKAWA, Hiro EINISHI, Mitsumasa NAKAJIMA, Tomohito HASEGAWA, Takeshi MORITA, Yoshifumi SAIJO, Minoru K. KUROSAWA and Hiroshi FUNAKUBO, "Effect of deposition time on film thickness and their properties for hydrothermally-grown epitaxial KNbO3 thick films", Jpn. J. Appl. Phys., vol. 49 07HF01, 2010
  57. Kazuhiko INOUE and TakeshiMORITA, "PLZT light transmittance memory driven with asymmetric pulse voltage operation", J. Korean Phys.Soc., vol. 57, No. 4, pp. 855-858, 2010
  58. Yoichi KADOTA, Hiroshi HOSAKA and Takeshi MORITA, "Field induced strain memory with non-180o domain reorientation control", J. Korean Phys.Soc., vol. 57, No. 4, pp. 902-906, 2010
  59. Ryo AGEBA, Yoichi KADOTA, Takafumi MAEDA, Norihito TAKIGUCHI, Takeshi MORITA, Mutsuo ISHIKAWA, Peter BORNMANN and Tobias HEMSEL, "Ultrasonically assisted hydrothermal method for ferroelectric material synthesis", J. Korean Phys.Soc., vol. 57, No. 4, pp. 918-923, 2010
  60. Takafumi MAEDA, Norihito TAKIGUCHI, Mutsuo ISHIKAWA, Tobias HEMSEL and Takeshi MORITA, "Hydrothermal (K1-xNax)NbO3 lead-free piezoelectric ceramics", J. Korean Phys.Soc., vol. 57, No. 4, pp. 924-928, 2010
  61. Ernst GUNTER Lierke, Walter LITTMANN, Takeshi MORITA and Tobias HEMSEL, "Various aspects on the placement of piezoelectric material in composite actuators, motors and transducers", J. Korean Phys.Soc., vol. 57, No. 4, pp. 933-937, 2010
  62. Peter BORNMANN, Tobias HEMSEL, Walter LITTMANN, Ryo AGEBA, Yoichi KADOTA and Takeshi MORITA, "Ultrasonic transducer for hydrothermal method", J. Korean Phys.Soc., vol. 57, No. 4, pp. 1122-1126, 2010
  63. Hyun-Cheol SONG, Takeshi MORITA, Seok-Jin YOON and Dae-Yong JEONG, "DC bias and piezoelectric constants of rhombohedral Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystals", Jpn. J. Appl. Phys..,vol. 49, No.11, 111502 , 2010
  64. Takeshi MORITA, "Piezoelectric materials synthesized by the hydrothermal method and their applications (review)", Materials, vol. 3, pp. 5236-5245, 2010
  65. Yoichi KADOTA, Mutuso ISHIKAWA, Hiroshi HOSAKA and Takeshi MORITA, "Ultrasonically assisted hydrothermal synthesis of polycrystalline PZT thin film on titanium substrate", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol.56, pp.9-13, 2009
  66. Tomoya OZAKI, Hiroshi HOSAKA and Takeshi MORITA, "Magnetic flux memory effect using a magnetostrictive material-shape memory piezoelectric actuator composite", Sensors and Actuators, vol.154, pp.69-72, 2009
  67. Mutsuo ISHIKAWA, Keisuke YAZAWA, Takashi FUJISAWA, Shintaro YASUI, Tomoaki YAMADA, Tomohito HASEGAWA, Takeshi MORITA, Minoru K. KUROSAWA and Hiroshi FUNAKUBO, "Growth of epitaxial KNbO3 thick films by hydrothermal method and their characterization", Jpn. J. Appl. Phys., vol. 48, 09KA14, 2009
  68. Yoichi KADOTA, Hiroshi HOSAKA and Takeshi MORITA, "Utilization of the permittivity memory effect for position detection of a shape memory piezoelectric actuator", Jpn. J. Appl. Phys., Brief Communication, vol. 47, No. 1, pp. 217-219, 2008
  69. Go MATSUNAMI, Akito KAWAMATA, Hiroshi HOSAKA and Takeshi MORITA, "Multilayered LiNbO3 actuator for XY stage using a shear piezoelectric effect", Sensors and Actuators A: vol 144-2, pp. 337-340, 2008
  70. Mutsuo ISHIKAWA, Norihito TAKIGUCHI, Hiroshi HOSAKA and Takeshi MORITA, "Non-doped potassium niobate ceramics using hydrothermal method with optimum temperature condition" Jpn. J. Appl. Phys., vol. 47, 3824-3828, 2008
  71. Toshinori OHASHI, Hiroshi HOSAKA and Takeshi MORITA, "Refractive index memory effect of ferroelectric materials induced by electrical imprint field", Jpn. J. Appl. Phys.,vol.47, pp. 3985-3987, 2008
  72. Mutsuo ISHIKAWA, Yoichi KADOTA, Norihito TAKIGUCHI, Hiroshi HOSAKA and Takeshi MORITA, "Synthesis of Nondoped Potassium Niobate Ceramics using ultrasonic assisted hydrothermal method", Jpn. J. Appl. Phys., vol.47, pp.7673-7677, 2008
  73. Yoichi KADOTA, Hiroshi HOSAKA and Takeshi MORITA, "Shape memory piezoelectric actuator by controlling imprint electrical field", J. of Ferroelectrics, vol.368, pp.185-193, 2008
  74. Akito KAWAMATA, Yoichi KADOTA, Hiroshi HOSAKA and Takeshi MORITA, "Self-sensing piezoelectric actuator using permittivity detection" J. of Ferroelectrics, vol.368, pp.194-201, 2008
  75. Toshinori OHASHI, Hiroshi HOSAKA and Takeshi MORITA, "Light transmittance memory effect of PLZT induced by the electrical imprint field", Appl. Phys. Lett., vol.93, 192102, 2008
  76. Akito KAWAMATA, Hiroshi HOSAKA and Takeshi MORITA, "Non-hysteresis and perfect linear piezoelectric performance of a multilayered lithium niobate actuator", Sensors and Actuators A, Vol. 135-2, pp.782-786, 2007
  77. Takeshi MORITA, Yoichi KADOTA and Hiroshi HOSAKA, "Shape memory piezoelectric actuator", Appl. Phys. Lett., vol. 90-8, No. 082909, 2007
  78. Takeshi MORITA and Yasuo CHO, "Piezoelectric property of an epitaxial lead titanate thin film deposited by the hydrothermal method", Appl. Phys. Lett., vol. 88-11, No. 112908, 2006
  79. Takefumi KANDA, Akira MAKINO, Tomohisa ONO, Koichi SUZUMORI, Takeshi MORITA and Minoru K. KUROSAWA, "A micro ultrasonic motor using a micro-machined cylindrical bulk PZT transducer", Sensors and Actuators A, vol. 127-1, pp. 131-138, 2006
  80. Takeshi MORITA and Yasuo CHO, "Piezoelectric performance and domain structure of epitaxial PbTiO3 thin film deposited by hydrothermal method ", Jpn. J. Appl. Phys., vol. 45 (5B), pp. 4489-4492, 2006
  81. Takeshi MORITA and Yasuo CHO, "Hydrothermally deposited PbTiO3 epitaxial thin film", Journal of the Korea Physical Society, vol. 46 (1), pp. 10-14, 2005
  82. Takeshi MORITA and Yasuo CHO, "Epitaxial PbTiO3 thin films on SrTiO3 (100) and SrRuO3/SrTiO3 (100) substrates deposited by a hydrothermal method", Jpn. J. Appl. Phys., vol. 43, no. 9B, pp.6535-6538, 2004
  83. Takeshi MORITA, Yasuo WAGATSUMA, Yasuo CHO, Hitoshi MORIOKA, Hiroshi FUNAKUBO and Nava SETTER, "Ferroelectric properties of an epitaxial lead zirconate titanate thin film deposited by a hydrothermal method below the Curie temperature", Appl. Phys. Lett., vol. 84-25, pp. 5094-5096, 2004
  84. Takeshi MORITA and Yasuo CHO, "A hydrothermally deposited epitaxial lead titanate thin film on strontium ruthenium oxide bottom electrode", Appl. Phys. Lett., vol. 58-12, pp.2331-2333, 2004
  85. Takeshi MORITA, Yasuo WAGATSUMA, Hitoshi MORIOKA, Hiroshi FUNAKUBO, Nava SETTER and Yasuo CHO, "Ferroelectric property of an epitaxial lead zirconate titanate thin film deposited by a hydrothermal method", J. of Mater. Res., vol 19-6, pp.1862-1868, 2004
  86. Takeshi MORITA and Yasuo CHO, "Polarization reversal anti-parallel to the applied electric field observed using a scanning nonlinear dielectric microscopy", Appl. Phys. Lett., vol.84-2, pp. 257-259, 2004
  87. Takeshi MORITA and Yasuo CHO, "A hydrothermally deposited epitaxial lead titanate (PbTiO3) thin film on strontium ruthenium oxide (SrRuO3) bottom electrode for the ferroelectric ultra-high density storage medium" Integrated Ferroelectrics, vol. 64, pp.247-257, 2004
  88. Mirai KATOH, Takeshi MORITA and Yasuo CHO, "Observation of ring shaped domain patterns using a scanning nonlinear dielectric microscopy", Integrated Ferroelectrics, vol. 68, pp.207-219, 2004
  89. Takeshi MORITA and Yasuo CHO, "Observation of antiparallel polarization reversal using a scanning nonlinear dielectric microscopy", Jpn. J. Appl. Phys., vol. 42, pp.6214-6217, 2003
  90. Takeshi MORITA, Shunichi TAKAHASHI, Hajime ASAMA and Toshiki NIINO, "Rotational feedthrough using an ultrasonic motor and its performance in ultra high vacuum conditions", Vacuum, vol. 70, pp.53-57, 2003
  91. Takeshi MORITA, "Miniature piezoelectric motor (review)", Sensors and Actuators A, vol. 103-3, pp.291-300, 2003
  92. Takeshi MORITA, Ryuichi YOSHIDA, Yasuhiro OKAMOTO and Toshiro HIGUCHI, "3 DOF parallel mechanism utilizing smooth impact drive mechanism", Precision Engineering, vol. 26, pp.286-292, 2002
  93. Takeshi MORITA, Katsumi SHIMIZU, Masayuki HASEGAWA and Toshiro HIGUCHI, "Miniaturized levitation system with motion control using piezoelectric actuator", IEEE Transaction on Control System Technology, vol. 10-5, pp.666-670, 2002
  94. Takeshi MORITA, Toshiki NIINO and Hajime ASAMA "Rotational feedthrough using a ultrasonic motor for ultra-high vacuum conditions", Vacuum, vol.65, pp.85-90, 2002
  95. Takeshi MORITA, Toshiki NIINO, Hajime ASAMA and Hideo TASHIRO, "Fundamental study of a stacked lithium niobate transducer" Jpn. J. Appl. Phys., vol.40, part 1, no.5B, pp. 3801-3806, 2001
  96. Takefumi KANDA, Takeshi MORITA, Minoru K. KUROSAWA, and Toshiro HIGUCHI, "Estimation of resolution and contact force of a longitudinally vibrating touch probe sensor using lead zirconate titanate (PZT) thin-film vibrator", Jpn. J. Appl. Phys., vol.40, part 1, no.5B, pp. 3646-3651, 2001
  97. Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "A cylindrical shaped micro ultrasonic motor utilizing PZT thin film (diameter 1.4mm and L5.0mm stator transducer)", Sensors and Actuators A, vol. 83, pp.225-230, 2000
  98. Takefumi KANDA, Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "A flat type touch probe sensor using PZT thin film vibrator", Sensors and Actuators A, vol. 83, pp.67-75, 2000
  99. Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "Cylindrical micro ultrasonic motor utilizing bulk lead zirconate titanate (PZT)", Jpn. J. Appl. Phys., vol. 38, pp.3347-3350, 1999
  100. Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "Simulation of surface acoustic wave motor with spherical slider", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol. 46, no. 4, pp.929-934, 1999
  101. Takeshi MORITA, Ryuichi YOSHIDA, Yasuhiro OKAMOTO, Minoru K. KUROSAWA and Toshiro HIGUCHI, "A smooth-impact rotation type motor using a multi-layered torsional piezoelectric actuator", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol. 46 no. 6, pp.1439-1445, 1999
  102. Takefumi KANDA, Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "Rod-shaped vibro touch sensor using PZT thin film", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol.46, pp.875-882, 1999
  103. Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "Cylindrical micro ultrasonic motor using PZT thin film deposited by single process hydrothermal method (diameter 2.4mm, L10mm stator transducer)", IEEE Trans. on Ultrasonic, Ferroelectrics and Frequency Control, vol.45, no.5, pp.1178-1187, 1998
  104. Takeshi MORITA, Takefumi KANDA, Yutaka YAMAGATA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "Single process to deposit lead zirconate titanate (PZT) thin film by hydrothermal method", Jpn. J. Appl. Phys., vol. 36/5B, pp.2298-2999, 1997
  105. Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "Design of a cylindrical ultrasonic micromotor to obtain mechanical output", Jpn. J. Appl. Phys., Part 1, vol. 35/5B, pp.3251-3254, 1996
  106. Takeshi MORITA, Minoru K. KUROSAWA and Toshiro HIGUCHI, "An ultrasonic micromotor using a bending cylindrical transducer based on PZT thin film", Sensors and Actuators A, vol. 50, pp.75-80, 1995