Publications

Papers

2024

144. Y. Li*, H. Nakamura*, D.-H. Lee, Y. Qin, Y. Xuan, K. Takei, “Temperature coefficient of resistance of transferred laser-induced graphene”, Submitted, 2024. *Equally contributed.

143. H. Nakamura*, R. Ezaki*, G. Matsumura*, C.-C. Chung, Y.-C. Hsu, Y.-R. Peng, A. Fukui, Y.-L. Chueh, D. Kiriya, K. Takei, “Solution-processed flexible temperature sensor array for highly resolved spatial temperature and tactile mapping using ESN-based data interpolation” ACS Applied Materials and Interfaces, Vol. 16, pp. 19198-19204, 2024. *Equally contributed.

142. Printable device roadmap team, “Roadmap on printable electronic materials for next-generation sensors”, Nano Futures, in press 2024.

141. Y. Li, G. Matsumura, Y. Xuan, S. Honda, K. Takei, “Stretchable electronic skin using laser-induced graphene and liquid metal with an action recognition system powered by machine learning“, Advanced Functional Materials, in press 2024

140. C. Jiang, H. Xu, L. Yang, J. Liu, Y. Li, K. Takei*, W. Xu*, “Neuromorphic antennal sensory system“, Nature Communications, Vol. 15, p. 2109, 2024. *Corresponding authors.

2023

139. S. Honda, R. Tanaka, G. Matsumura, N. Seimiya, K. Takei, “WIreless, flexible, ionic, perspiration-rate sensor system with long-time and high sweat volume functions toward early-stage, real-time detection of dehydration”, Advanced Functional Materials, Vol. 33, p. 2306516, 2023.

138. M. Asai, S. Honda, N. Isshiki, M. Takesue, A. Hiraishi, M. Yamada, K. Takei, “Highly stable, flexible ISFET pH sensor using sorted semiconducting SWNTs in aqueous solution, Advanced Materials Technologies, Vol. 8, p. 2300842, 2023.

137. A. Fukui, K. Matsuyama, H. Onoe, S. Itai, H. Ikeno, S. Hiraoka, K. Hiura, Y. Hijikata, J. Pirillo, T. Nagata, K. Takei, T. Yoshimura, N. Fujimura, D. Kiriya, “Unusual selective monitoring of N, N-dimethylformamide in a two-dimensional layered field-effect transistor“, ACS Nano, Vol. 17, pp. 14981-14989, 2023.

136. J. Zhang, C. D. Van, K. Takei, M. H. Lee, “Three-dimensional WO3 nanorod array on Si as photoanodes for efficient photoelectrochemical water splitting“, Journal of Industrial and Engineering Chemistry, Vol. 124, pp. 550-557, 2023.

135. Flexible sensor team (142 authors), “Technology Roadmap for flexible sensors”ACS Nano, Vol. 17, pp. 5211-5295, 2023. 

134. K. Takei, “Multimodal flexible sensor system: long term stable monitoring and multi-tasking system using a machine learning”, JSAP Review, 230411, 2023 (https://doi.org/10.11470/jsaprev.230411). 

2022

133. S. Wakabayashi, T. Arie, S. Akita, K. Nakajima, K. Takei, “A multi-tasking flexible sensor via reservoir computing”, Advanced Materials, Vol. 34, p. 2201663, 2022.

132. L. Liu, P. M. Pancorbo, T.-H. Xiao, S. Noguchi, M. Marumi, H. Segawa, S. Karhadkar, J. G. Pable, K. Hiramatsu, Y. Kitahama, T. Itoh, J. Qu, K. Takei, K. Goda, “Highly scalable, wearable surface-enhanced Raman spectroscopy”, Advanced Optical Materials, Vol. 5, p. 2200054, 2022.

131. S. Honda, H. Hara, T. Arie, S. Akita, K. Takei, “A wearable, flexible sensor for real-time, home monitoring of sleep apnea“, iScience, Vol. 25, p. 104163, 2022.

130. Y. Xuan, H. Hara, S. Honda, Y. Li, Y. Fujita, T. Arie, S. Akita, K. Takei, “Wireless, minimized, stretchable, and breathable electrocardiogram sensor system”, Applied Physics Reviews, Vol. 9, p. 011425, 2022 (Selected as Featured Article).

129. K. Tanaka, Y. Tokudome, Y. Minami, S. Honda, T. Nakajima, K. Takei, K. Nakajima, “Self-organization of remote reservoirs: Transferring computation to spatially distant locations“, Advanced Intelligent Systems, Vol. 4, p. 2100166, 2022 (Selected as Editors’ Choice).

128. A. Fukui, Y. Aoki, K. Matsuyama, H. Ichimiya, R. Nouchi, K. Takei, A. Ashida, T. Yoshimura, N. Fujimura, D. Kiriya, “Single-layered assembly of vanadium pentoxide nanowires on graphene for nanowire-based lithography technique”, Nanotechnology, Vol. 33, 075602, 2022.

2021

127. K. Nakagawa, K. Satoh, S. Murakami, K. Takei, S. Akita, T. Arie, “Controlling the thermal conductivity of multilayer graphene by strain”, Scientific Reports, Vol. 11, p. 19533, 2021.

126. Y. Lu, Y. Fujita, S. Honda, S.-H. Yang, Y. Xuan, K. Xu, T. Arie, S. Akita, K. Takei, “Wireless and flexible skin moisture and temperature sensor sheets toward the study of thermoregulator center“, Advanced Healthcare Materials, Vol. 10, p. 202100103, 2021 (Inside front cover).

125. S. Hozumi, S. Honda, T. Arie, S. Akita, K. Takei, “Multimodal wearable sensor sheet for health-related chemical and physical monitoring“, ACS Sensors, Vol. 6, pp. 1918-1924, 2021.

124. Y. Xuan, Y. Lu, S. Honda, T. Arie, S. Akita, K. Takei, “Active-matrix-based flexible optical image sensor“, Advanced Materials Technologies, Vol. 6, p. 2100259, 2021.

123. K. Xu, Y. Fujita, Y. Lu, S. Honda, M. Shiomi, T. Arie, S. Akita, K. Takei, “A wearable body condition sensor system with wireless feedback alarm functions“, Advanced Materials, Vol. 33, p. 2008701, 2021 (Cover image).

122. Y. Lu, K. Xu, M.-Q. Yang, S.-Y. Tang, T.-Y. Yang, Y. Fujita, S. Honda, T. Arie, S. Akita, Y.-L. Chueh, K. Takei, “Highly stable Pd/HNb3O8-based flexible humidity sensor for perdurable wireless wearable applications“, Nanoscale Horizons, Vol. 6, pp. 260-270. 2021.

121. T. Inoue, T. Saito, K. Takei, T. Arie, Y. Miyata, S. Akita, “Light induced persistent resonance frequency shift of MoS2 mechanical resonator“, Applied Physics Express, Vol. 14, p. 035003, 2021.

120. K. Xu, Y. Lu, K. Takei, “Flexible hybrid sensor systems with feedback functions“, Advanced Functional Materials, Vol. 31, p. 2007436, 2021 (Invited review).

119. K. Tanaka, S.-H. Yang, Y. Tokudome, Y. Minami, Y. Lu, T. Arie, S. Akita, K. Takei*, T. Nakajima*, “Flapping-wing dynamics as a natural detector of wind direction“, Advanced Intelligent Systems, Vol. 3, p. 2000174, 2021.

2020

118. Y. Lu, K. Xu, L. Zhang, M. Deguchi, H. Shishido, T. Arie, R. Pan, A. Hayashi, L. Shen, S. Akita, K. Takei, “Multimodal plant healthcare flexible sensor system“,ACS Nano, Vol. 14, pp. 10966-10975, 2020.

117. S. Honda, M. Shiomi, T. Yamaguchi, Y. Fujita, T. Arie, S. Akita, K. Takei, “Detachable flexible ISFET-based pH sensor array with a flexible connector“, Advanced Electronic Materials, Vol. 6, p. 2000583, 2020.

116. Y. Yamada, K. Shinokita, Y. Okajima, S. N. Takeda, Y. Matsushita, K. Takei, T. Yoshimura, A. Ashida, N. Fujimura, K. Matsuda, D. Kiriya, “Photo-activation of strong photoluminescence in superacid-treated monolayer molybdenum disulfide“, ACS Applied Materials & Interfaces, Vol. 12, pp. 36496-36504, 2020.

115. S. Wakabayashi, T. Arie, S. Akita, K. Takei, “Very thin, macroscale flexible tactile pressure sensor sheet“, ACS Omega, Vol. 5, pp. 17721-17725, 2020.

114. T. Nakajima, T. Yamaguchi, S. Wakabayashi, T. Arie, S. Akita, K. Takei, “Transformable pneumatic balloon-type soft robot using attachable shells“, Advanced Materials Technologies, Vol. 5, p. 2000201, 2020.

113. T. Yamaguchi, D. Yamamoto, T. Arie, S. Akita, K. Takei, “Wrist flexible heart pulse sensor integrated with a soft pump and a pneumatic balloon membrane“, RSC Advances, Vol. 10, pp. 17353-17358, 2020.

112. S. Wakabayashi, T. Yamaguchi, T. Arie, S. Akita, K. Takei, “Out-of-plane electric whiskers based on nanocarbon strain sensors for multi-directional detection”, Carbon, Vol. 158, pp. 698-703, 2020.

2019

111. K. Xu, Y. Lu, T. Yamaguchi, T. Arie, S. Akita, K. Takei, “Highly precise multifunctional thermal management-based flexible sensing sheets“, ACS Nano, Vol. 13, pp. 14348-14356, 2019.

110. D. Yoshikawa, K. Takei, T. Arie, S. Akita, “Dielectric actuation of optically transparent electromechanical resonator consisting of cantilevered hexagonal boron nitride sheet“,Applied Physics Express, Vol. 12, p. 105001, 2019.

109. K. Xu, Y. Lu, S. Honda, T. Arie, S. Akita, K. Takei, “Highly stable kirigami-structured stretchable strain sensors for perdurable wearable electronics“, Journal of Materials Chemistry C, Vol. 7, pp. 9609-9617, 2019.

108. K. Xu, R. Zhou, K. Takei*, M. Hong*, “Toward flexible surface-enhanced Raman scattering (SERS) sensors for point-of-care diagnostics“, Advanced Science, Vol. 6, p. 1900925, 2019, *Co-corresponding authors.

107. T. Yamaguchi, T. Kashiwagi, T. Arie, S. Akita, K. Takei, “Human-like Electronic Skin-Integrated Soft Robotic Hand“, Advanced Intelligent Systems, Vol. 1, p. 1900018, 2019. (Highlighted by Advanced Science News, Nanowerk and some web news).

106. M. Shiomi, Y. Mochizuki, Y. Imakita, T. Arie, S. Akita, K. Takei, “Graphene and carbon nanotube heterojunction transistors with individual gate control“, ACS Nano, Vol. 13, pp. 4771-4777, 2019.

105. K. Takei*, W. Gao*, C. Wang*, A. Javey*, “Physical and chemical sensing with electronic skin“, Proceedings of the IEEE, Vol. 107, pp. 2155-2167, 2019, *Co-corresponding authors

104. W. Gao*, H. Ota*, D. Kiriya*, K. Takei*, A. Javey*, “Flexible Electronics Toward Wearable Sensing“, Accounts of Chemical Research, Vol. 52, pp. 523-533, 2019. *Co-corresponding authors (Cover image)

103. S. Honda, Q. Zhu, S. Satoh, T. Arie, S. Akita, K. Takei, “Textile-based flexible tactile force sensor sheet“, Advanced Functional Materials, Vol. 29, p. 1807957, 2019.

102. K. Xu, Y. Lu, K. Takei, “Multifunctional skin-inspired flexible sensor systems for wearable electronics“, Advanced Materials Technologies, Vol. 4, p. 1800628, 2019.

101. D. Yamamoto, M. Shiomi, T. Arie, S. Akita, K. Takei, “All solution-based heterogeneous material formation for p-n junction diode“, ACS Applied Materials & Interfaces, Vol. 11, pp. 1021-1025, 2019.

2018

100. S. Nakata, M. Shiomi, Y. Fujita, T. Arie, S. Akita, K. Takei, “A wearable pH sensor with high sensitivity based on a flexible charge-coupled device“, Nature Electronics, Vol. 1, pp. 596-603, 2018 (See also News & Views of Nature Electronics). Free access for “view only version” click here

99. T. Inoue, Y. Mochizuki, K. Takei, T. Arie, S. Akita, “Tuning of the temperature dependence of the resonance frequency shift in atomically thin mechanical resonators with van der Waals heterojunctions”, 2D Materials, Vol. 5, p. 045022, 2018.

98. Y. Hasuike, T. Arie, S. Akita, K. Takei, “Planar-type printed flexible mechanical switch“, Advanced Electronic Materials, Vol. 4, p. 1800134, 2018.

97. S. Kobayashi, Y. Anno, K. Takei, T. Arie, S. Akita, “Photoresponse of graphene field-effect-transistor with n-type Si depletion layer gate“, Scientific Reports, Vol. 8, p. 4811, 2018.

96. S. H. Lee, S.-H. Shin, M. Madsen, K. Takei, J. Nah, M. H. Lee, “A soft lithographic approach to fabricated InAs nanowire field-effect transistors“, Scientific Reports, Vol. 8, p. 3204, 2018.

95. Y. Miyamoto, D. Yoshikawa, K. Takei, T. Arie, S. Akita, “Effect of buffer layer on photoresponse of MoS2 phototransistor“, Japanese Journal of Applied Physics, Vol. 57, p. 06HB01, 2018.

2017

94. K. Takei, “Toward macro-scale, multi-functional flexible sensor sheets“, Journal of the Imaging Society of Japan, Vol. 56, p. 589-600, 2017.

93. K. Kanao, S. Nakata, T. Arie, S. Akita, K. Takei, “Human-interactive multi-functional electronic wallpaper integrated with sensors and memory“, Materials Horizons, Vol. 4, pp. 1079-1084, 2017.

92. T. Inoue, Y. Anno, Y. Imakita, K. Takei, T. Arie, S. Akita, “Resonance control of graphene drum resonator in nonlinear regime by standing wave of light“, ACS Omega,Vol. 2, pp. 5792-5797, 2017.

91. Y. Yamamoto, D. Yamamoto, M. Takada, H. Naito, T. Arie, S. Akita, K. Takei, “Efficient skin temperature sensor and stable gel-less sticky ECG sensor for a wearable flexible healthcare patch“, Advanced Healthcare Materials, Vol. 6, p. 1700495, 2017.

90. Y. Anno, M. Takeuchi, M. Matsuoka, K. Takei, S. Akita, T. Arie, “Effect of defect-induced carrier scattering on the thermoelectric power of graphene“, Applied Physics Letters, Vol. 110, p. 263501, 2017.

89. D. Yamamoto, S. Nakata, K. Kanao, T. Arie, S. Akita, K. Takei, “A planar, multi-sensing wearable health monitoring device integrated with acceleration, temperature, and electrocardiogram sensors“,Advanced Materials Technologies, Vol.2, p. 1700057, 2017.

88. M. Yasuda, K. Takei, T. Arie, S. Akita, “Direct measurement of optical trapping force gradient on polystyrene microspheres using a carbon nanotube mechanical resonator“, Scientific Reports, Vol. 7, p. 2825, 2017.

87. S. Nakata, T. Arie, S. Akita, K. Takei, “Wearable, flexible, and multifunctional healthcare device with an ISFET chemical sensor for simultaneous sweat pH and skin temperature monitoring”, ACS Sensors, Vol. 2, pp. 443-448, 2017.

86. Y. Anno, Y. Imakita, K. Takei, S. Akita, T. Arie, “Enhancement of graphene thermoelectric performance through defect engineering“, 2D Materials, Vol. 4, p. 025019, 2017.

2016

85. Y. Yamamoto, S. Harada, D. Yamamoto, W. Honda, T. Arie, S. Akita, K. Takei, “Printed multifunctional flexible device with an integrated motion sensor for health care monitoring”, Science Advances, Vol. 2, p. e1601473, 2016.

84. K. Kanao, T. Arie, S. Akita, K. Takei, “An all-solution-processed tactile memory flexible device integrated with a NiO ReRAM”, Journal of Materials Chemistry C, Vol. 4, pp. 9261-9265, 2016.

83. Y. Wada, K. Kita, K. Takei, T. Arie, S. Akita, “Heat transfer of suspended carbon nanotube yarn to gases“, Applied Physics Express, Vol. 9, p. 085001, 2016.

82. W. Honda, T. Arie, S. Akita, K. Takei, “Bendable CMOS digital and analog circuits monolithically integrated with a temperature sensor“, Advanced Materials Technologies, Vol. 1, p. 1600058, 2016.

81. S. Nakata, K. Kanao, S. Harada, T. Arie, S. Akita, K. Takei, “An extremely highly selective flexible compliant tactile touch sensor sheet”, Physica Status Solidi A, Vol. 213, pp. 2345-2351, 2016.

80. M. Yasuda, K. Takei, T. Arie, S. Akita, “Oscillation control of carbon nanotube mechanical resonator by electrostatic interaction induced retardation“, Scientific Reports, Vol. 6, p. 22600, 2016.

79. K. Chen, W. Gao, S. Emaminejad, D. Kiriya, H. Ota, H. Y. Y. Nyein, K. Takei, A. Javey, “Printed Carbon Nanotube Electronics and Sensor Systems“, Advanced Materials, Vol. 28, pp. 4397-4414, 2016.

2015

78. S. Ishida, Y. Anno, M. Takeuchi, Masaya Matsuoka, K. Takei, T. Arie, S. Akita “Highly photosensitive graphene field-effect transistor with optical memory function“, Scientific Reports, Vol. 5, p. 15491, 2015.

77. W. Honda, T. Arie, S. Akita, K. Takei, “Mechanically flexible and high-performance CMOS logic circuits“, Scientific Reports, Vol. 5, p. 15099, 2015.

76. Y. Anno, K. Takei, S. Akita, T. Arie, “Enhancing the thermoelectric device performance of graphene using isotopes and isotopic heterojunctions“, Advanced Electronic Materials, Vol. 1, p. 1500175, 2015.

75. A. Nagataki, K. Takei, T. Arie, S. Akita, “Carbon nanotube mechanical resonator in potential-well induced by van-der-Waals interaction“, Applied Physics Express, Vol. 8, p. 085101, 2015.

74. W. Honda, S. Harada, S. Ishida, T. Arie, S. Akita, K. Takei, “High performance, mechanically flexible, and vertically integrated three-dimensional carbon nanotube and InGaZnO complementary circuits with a temperature sensor”, Advanced Materials, Vol. 27, pp. 4674-4680, 2015.

73. Y. Yamamoto, K. Kanao, T. Arie, S. Akita, K. Takei, “Air ambient-operated pNIPAM-based flexible actuators stimulated by human body temperature and sunlight“,ACS Applied Materials & Interfaces, Vol. 7, pp. 11002-11006, 2015.

72. S. Harada, T. Arie, S. Akita, K. Takei, “Highly stable liquid-solid metal contact toward multi-layered detachable flexible devices“,Advanced Electronic Materials, Vol. 1, p. 1500080, 2015.

71. K. Kanao, S. Harada, Y. Yamamoto, W. Honda, T. Arie, S. Akita, K. Takei, “Highly selective flexible tactile strain and temperature sensors against substrate bending for an artificial skin“,RSC Advances, Vol. 5, pp. 30170-30174, 2015.

70. T. Gohara, K. Takei, T. Arie, S. Akita, “Reduction of carbon byproducts for high-purity carbon nanocoil growth by suppressing catalyst collision“, Carbon, Vol. 89, pp. 225-231, 2015.

69. Y. Wada, Y. Fujita, K. Takei, T. Arie, S. Akita, “Suspended single-walled carbon nanotube field effect transistor toward gas sensing application“, Japanese Journal of Applied Physics, Vol. 54, p. 06FB01, 2015.

68. K. Takei, W. Honda, S. Harada, T. Arie, S. Akita, “Toward flexible and wearable human-interactive health-monitoring devices“, Advanced Healthcare Materials, Vol. 4, pp. 487-500, 2015.

2014

67. S. Harada, K. Kanao, Y. Yamamoto, T. Arie, S. Akita, K. Takei, “Fully printed flexible fingerprint-like three-axis tactile and slip force and temperature sensors for artificial skin“, ACS Nano, Vol. 8, pp. 12851-12857, 2014.

66. S. Harada, T. Arie, S. Akita, K. Takei, “Superhydrophobic and self-cleaning macrosize surfaces of silicone rubber and its mechanical flexibility“, BioNanoScience, Vol. 4, pp. 301-305, 2014.

65. W. Honda, T. Arie, S. Akita, K. Takei, “Printable and foldable electrodes based on a carbon nanotube-polymer composition“, Physica Status Solidi A, Vol. 211, pp. 2631-2634, 2014.

64. Y. Anno, K. Takei, S. Akita, T. Arie, “Artificially controlled synthesis of graphene intramolecular heterojunctions for phonon engineering“, Physica Status Solidi (Rapid Research Letters) Vol. 8, pp. 692-697, 2014.

63. T. Kuroyanagi, Y. Terada, K. Takei, S. Akita, T. Arie, “Cantilevered carbon nanotube hygrometer”, Applied Physics Letters, Vol. 104, p.193104, 2014.

62. T. Gohara, K. Takei, T. Arie, S. Akita, “In-situ microscopy observations of the growth of individual carbon nanocoils”, Journal of Vacuum Science and Technology B, Vol. 32, p. 031807, 2014.

61. S. Harada, W. Honda, T. Arie, S. Akita, K. Takei, “Fully printed, highly sensitive multi-functional artificial electronic whisker arrays integrated with strain and temperature sensors“, ACS Nano, Vol. 8, pp. 3921-3927, 2014.

60. W. Honda, S. Harada, T. Arie, S. Akita, K. Takei,”Wearable human-interactive health-monitoring wireless devices fabricated by macroscale printing techniques“, Advanced Functional Materials, Vol. 24, pp. 3299-3304, 2014.

59. K. Takei, Z. Yu, M. Zheng, H. Ota, T. Takahashi, A. Javey, “Highly sensitive electronic whiskers based on patterned carbon nanotube and silver nanoparticle composite films“, Proceedings of the National Academy of Sciences (PNAS), Vol. 111, pp. 1703-1707, 2014.

58. X. Zhang, Z. Yu, C. Wang, D. Zarrouk, J. T. Seo, J. C. Cheng, A. D. Buchan, K. Takei, Y. Zhao, J. W. Ager, J. Zhang, M. Hettick, M. C. Hersam, A. P. Pisano, R. S. Fearing, A. Javey,“Photo-actuators and motors based on carbon nanotubes with selective chirality distributions”, Nature Communications, 5:2983 doi:10.1038/ncomms3983, 2014.

2013

57. T. Kagota, A. Nagataki, K. Takei, T. Arie, S. Akita,”Release and nonvolatile operation of carbon nanotube nanorelay by resonant vibration“, Applied Physics Letters, Vol. 103. p. 203504, 2013.

56. T. Takahashi, Z. Yu, K. Chen, D. Kiriya, C. Wang, K. Takei, H. Shiraki, T. Chen, B. Ma, A. Javey, “Carbon nanotube active-matrix backplanes for mechanically flexible, visible light and x-ray imagers”, Nano Letters, Vol. 13. pp. 5425-5430, 2013.

55. M. L. Hoarfrost, K. Takei, V. Ho, A. Heitch, P. Trefonas, A. Javey, R. A. Segalman, “Spin-on organic polymer dopants for silicon”, Journal of Physical Chemistry Letters, Vol. 4, pp. 3741-3746, 2013.

54. K. Takei, R. Kapadia, Y. Li, E. Plis, S. Krishna, A. Javey, “Surfacecharge transfer doping of III-V nanostructures”, Journal of Physical Chemistry C, Vol. 117, pp. 17845-17849, 2013.

53. P. H. Lau, K. Takei, C. Wang, Y. Ju, J. Kim, Z. Yu, T. Takahashi, G. Cho, A. Javey, “Fully-printed, high performance carbon nanotube thin-film transistors on flexible substrates”, Nano Letters, Vol. 13, pp. 3864-3869, 2013.[MIT Technology Review news]

52. R. Kapadia, Z. Yu, H.-H. H. Wang, M. Zheng, C. Battaglia, M. Hettick, D. Kiriya, K. Takei, P. Lobaccaro, J. W. Beeman, J. W. Ager, R. Maboudian, D. C. Chrzan, A. Javey “A direct thin-film path towards low-cost large-area III-Vphotovoltaics”, Scientific Reports, 3, 2275;DOI:10.1038/srep02275, 2013.

51. C. Wang, D. Hwang, Z. Yu, K. Takei, J. Park, T. Chen, B. Ma, A. Javey, “User-interactive electronic-skin for instantaneous pressure visualization”, Nature Materials, Vol. 12, pp. 899-904, 2013.

50. H. Fang, M. Tosun, G. Seol, T. C. Chang, K. Takei, J. Guo, A. Javey, “Degenerate n-doping of few-layer transition metal dichalcogendies by potassium“, Nano Letters, Vol. 13, pp. 1991-1995, 2013. [IOP Nanotechweb]

49. K.Takei, R. Kapadia, H. Fang, E. Plis, S. Krishna, A. Javey, “High quality interfaces of InAs-on-insulator field-effect transistors with ZrO2 gate dielectrics”, Applied Physics Letters, Vol. 102, p.153513, 2013.

48. O. Waldmann, A. Persaud, R. Kapadia, K. Takei, F. I. Allen, A. Javey, T. Schenkel, “Effects of palladium coating on field-emission properties of carbon nanofibers in a hydrogen plasma“, Thin Solid Films, Vol. 534, pp. 488-491, 2013.

47. S.-J. Choi, P. Bennett, K. Takei, C. Wang, C. C. Lo, A. Javey, J. Bokor, “Short-channel transistors constructed with solution-processed carbon nanotubes”, ACS Nano, Vol. 7, pp.798-803, 2013.

46. C. Wang, K. Takei, T. Takahashi, A. Javey, “Carbon nanotube electronics – Moving forward”, Chemical Society Reviews, Vol. 42, pp. 2592-2609, 2013.

2012

45. D. Kiriya, M. Zheng, R. Kapadia, J. Zhang, M. Hettick, Z. Yu, K. Takei, H.-H. Wang, P. Lobaccaro, A. Javey, “Morphological and spatial control of InP crystal growth using closed-spaced sublimation”, Journal of Applied Physics, Vol. 112, p. 123102, 2012.

44. M. Lee, K. Takei, J. Zhang, R. Kapadia, M. Zheng, Y.-Z. Chen, J. Nah, E. Alarcon, T. S. Matthews, Y.-L. Chueh, J. W. Ager, A. Javey, “p-InP nanopillar photocathodes for highly efficient, solar-driven hydrogen production“, Angew. Chem. Int. Ed., Vol. 51, pp.10760-10764, 2012.

43. C. Wang, J.-C. Chien, H. Fang, K. Takei, J. Nah, E. Plis, S. Krishna, A. M. Niknejad, A. Javey, “Self-aligned, extremely high frequency III-V metal-oxide-semiconductor field-effect transistors on rigit and flexible substrates“, Nano Letters, Vol. 12, pp. 4140-4145, 2012.

42. H. Fang, S. Chuang, T.-C. Chang, K. Takei, T. Takahashi, A. Javey, “High performance single layered WSe2 p-FETs with chemically doped contacts“, Nano Letters, Vol. 12, pp. 3788-3792, 2012.

41. J. Nah, H. Fang, C. Wang, K. Takei, M. H. Lee, E. Plis, S. Krishna, A. Javey, “III-V complementary metal-oxide-semiconductor electronics on Si substrates“, Nano Letters, Vol. 12, pp. 3592-3595, 2012.

40. M. Zheng, Z. Yu, T. J. Seok, Y.-Z. Chen, R. Kapadia, K. Takei, S. Aloni, J. W. Ager, M. Wu, Y.-L. Chueh, A. Javey, “High optical quality polycrystalline Indium Phosphide grown on metal substrates by MOCVD“, Journal of Applied Physics, Vol. 111, p. 123112, 2012.

39. H. Ko, R. Kapadia, K. Takei, T. Takahashi, X. Zhang, A. Javey, “Multifunctional, flexible electronic system based on engineered nanostructured materials“, Nanotechnology, Vol. 23, p. 344001, 2012.

38. K. Takei*, M. Madsen*, H. Fang, R. Kapadia,S. Chuang, H. S. Kim, C.-H. Liu, E. Plis, J. Nah, S. Krishna, Y.-L. Chueh, J. Guo, A. Javey, “Nanoscale InGaSb heterostructure membranes on Si substrates for high hole mobility transistors”, Nano Letters, Vol. 12, pp. 2060-2066 2012. *Authors equally contributed.

37. C. Wang, J.-C. Chien, K. Takei, T. Takahashi, J. Nah, A. M. Niknejad, A. Javey, “Extremely bendable, high performance integrated circuits using semiconducting carbon nanotube networks for digital, analog, and radio-frequency applications”, Nano Letters, Vol. 12, pp. 1527-1533, 2012.

36. H. Fang, S. Chuang, K. Takei, H. S. Kim, E. Plis, C.-H. Liu, S. Krishna, Y.-L. Chueh, A. Javey, “Ultrathin-body high-mobility InAsSb-on-insulator field-effect transistors”, IEEE Electron Device Letters, Vol. 33, pp. 504-506, 2012.

35. A. Persaud, O. Waldmann, R. Kapadia, K. Takei, A. Javey, T. Schenkel, “A compact neutron generator using a field ionization source”, Review of Scientific Instruments,Vol. 83, p. 02B312, 2012.

34. R. Kapadia, Z. Fan, K. Takei, A. Javey, “Nanopillar photovoltaics: Materials, processes, and devices”, Nano Energy, Vol. 1, pp.132-144, 2012.

33. T. Takahashi, P. Nichols, K. Takei, A. C. Ford, A. Jamshidi, M. C. Wu, C. Z. Ning, A. Javey, “Contact printing of compositionally graded CdSxSe1-x nanowire parallel arrays for tunable photodetectors”, Nanotechnology, Vol. 23, p. 045201, 2012.

32. Y. Chai, A. Hazeghi, K. Takei, H.-Y. Chen, P. C. H. Chan, A. Javey, H.-S. P. Wong, “Low-resistance electrical contact to carbon nanotubes with graphitic interfacial layer”, IEEE Transactions on Electron Devices, Vol. 59 , pp.12-19, 2012.

2011

31. T. Takahashi, K. Takei, A. G. Gillies, R. S. Fearing, A. Javey, “Carbon nanotube active-matrix backplanes for conformal electronics and sensors”, Nano Letters, Vol. 11, pp. 5408-5413, 2011.[IEEE Spectrum]

30. K. Takei*, H. Fang*, S. B. Kumar*, R.Kapadia, Q.Gao, M.Madsen, E.Plis, S.-Y.Chen, S. Krishna, Y.-L. Chueh, J. Guo, A. Javey, “Quantum confinement effects in nanoscale-thickness InAs membranes“, Nano Letters, Vol. 11, pp.5008-5012, 2011. *Authors equally contributed. [IOP Nanotechweb]

29. C. L. Pint, K. Takei, R. Kapadia, M. Zheng, A. C. Ford, J. Zhang, A. Jamshidi, R. Bardhan, J. J. Urban, M. Wu, J. W. Ager, B. A. Cruden, Javey, “Rationally designed, three-dimensional carbon nanotube back-contacts for efficient solar devices”, Advcaned Energy Materials, Vol. 1, pp. 1040-1045, 2011.

28. K. Takei, S. Chuang, H. Fang, R. Kapadia, C.-H. Liu, J. Nah, H. S. Kim, E. Plis, S. Krishna, Y.-L. Chueh, A. Javey, “Benchmarking the performance of ultrathin body InAs-on-insulator transistors as a function of body thickness”, Applied Physics Letters,Vol. 99 , p.103507, 2011.

27. Y. Chai, Y. Wu, K. Takei, H.-Y. Chen, S. Yu, P. C. H. Chan, A. Javey, H.-S. P. Wong, “Nanoscale bipolar and complementary resistive switching memory based on amorphous carbon”, IEEE Transactions on Electron Devices, Vol. 58 , pp.3933-3939, 2011.

26. M. H. Lee, N. Lim, D. J. Ruebusch, A. Jamshidi, R. Kapadia, R. Lee, T. J. Seok, K. Takei, K. Y. Cho, H. Jang, M. Wu, G. Cho, A. Javey, “Roll-to-roll anodization and etching of aluminum foils for high-throughput surface nano-texturing”, Nano Letters, Vol. 11, pp. 3425-3430, 2011

25. X. Zhang, C. L. Pint, M. H. Lee, B. E. Schubert, A. Jamshidi, K. Takei, H. Ko, A. Gillies, R. Bardhan, J. J. Urban, M. Wu, R. Fearing, A. Javey, “Optically- and thermally-responsive programmable materials based on carbon nanotube-hydrogel polymer composites”, Nano Letters, Vol. 11, pp. 3239-3244, 2011.[Nature Research Highlight][IOP Nanotechweb].

24. M. Madsen, K. Takei, R. Kapadia, H. Fang, T. Takahashi, A. Ford, M. H. Lee, A. Javey, “Nanoscale semiconductor “X” on substrate “Y” – Processes, devices and applications”, Advanced Materials, Vol. 23, pp.3115-3127, 2011.

23. Y. Dan, K. Seo, K. Takei, J. H. Meza, A. Javey, K. B. Crozier, “Dramatic reduction of surface recombination by in-situ surface passivation of silicon nanowires”, Nano Letters, Vol. 11, pp. 2527-2532, 2011.

22. K. Cho, D. J. Ruebusch, M. H. Lee, J. Moon, A. C. Ford, R. Kapadia, K. Takei, A. Javey, “Molecular monolayers for conformal, nanoscale doping of InP nanopillar photovoltaics”, Applied Physics Letters,Vol. 98, p. 203101, 2011. [Virtual Journal of Nanoscale Science & Technology]

21. H. Fang, M. Madsen, C. Carraro, K. Takei, H. S. Kim, E. Plis, S.-Y. Chen, S. Krishna, Y.-L. Chueh, R. Maboudian, A. Javey, “Strain engineering of epitaxial transferred, ultrathin III-V semiconductor on insulator layers”, Applied Physics Letters, Vol. 98, p. 012111, 2011.

20. T. Harimoto, K. Takei, T. Kawano, A. Ishihara, T. Kawashima, H. Kaneko, M. Ishida, S. Usui, “Enlarged gold-tipped silicon microprobe arrays and signal compensation for multi-site electroretinogram recordings in the isolated carp retina”, Biosensors and Bioelectronics, Vol. 26, pp. 2368-2375, 2011.

19. A. Persaud, I. Allen, M. R. Dickinson, T. Schenkel, R. Kapadia, K. Takei, A. Javey, “Development of a compact neutron source based on field ionization process”, Journal of Vacuum Science and Technology B, Vol. 29, p.02B107, 2011.

2010

18. H. Ko*, K. Takei*, R. Kapadia*, S. Chuang, H. Fang, P. W. Leu, K. Ganapathi, E. Plis, H. S. Kim, S.-Y. Chen, M. Madsen, A. C. Ford, Y.-L. Chueh, S. Krishna, S. Salahuddin, A. Javey, “Ultrathin compound semiconductor on insulator layers for high performance nanoscale transistors”, Nature, Vol. 468, pp. 286-289, 2010. *Authors equally contributed. [Nature News and Views][Nature Nanotechnology Research Highlights] [IEEE Spectrum] [Technology Review] [IOP Nanotechweb] [Virtual Journal of Nanoscale Science & Technology] etc.

17. T. Takahashi*, K. Takei*, E. Adabi, Z. Fan, A. Niknejad, A. Javey, “Parallel array InAs nanowire transistors for mechanically bendable, ultra high frequency electronics”, ACS Nano, Vol. 4, pp. 5855-5860, 2010. *Authors equally contributed.

16. K. Takei, T. Takahashi, J. C. Ho, H. Ko, A. G. Gillies, P. W. Leu, R. S. Fearing, A. Javey, “Nanowire Active Matrix Circuitry for Low-Voltage Macro-Scale Artificial Skin”, Nature Materials, Vol. 9, pp. 821-826, 2010. [Nature News][Nature materials News and Views][ACS C&EN][RSC Chemistry World News][IEEE Spectrum][Technology Review][Technology Review Magazine Demo][SPIE Professional Magazine][IOP Nanotechweb] [Virtual Journal of Nanoscale Science & Technology] etc.

15. O. Ergen, D. J. Ruebusch, H. Fang, A. A. Rathore, R. Kapadia, Z. Fan, K. Takei, A. Jamshidi, A. Javey, “Shape-controlled synthesis of single-crystalline nanopillar arrays by template-assisted vapor-liquid-solid process”, Journal of the American Chemical Society, Vol. 132, pp. 13972-13974, 2010.

14. H. Ko, Z. Zhang, K. Takei, A. Javey, “Hierarchical polymer micropillar arrays decorated with ZnO nanowires”, Nanotechnology, Vol. 21, p. 295305, 2010.

13. Z. Fan, R. Kapadia, P. W. Leu, X. Zhang, Y-L. Chueh, K. Takei, K. Yu, A. Jamshidi, A. A. Rathore, D. Ruebusch, M. Wu, A. Javey, “Ordered arrays of dual-diameter nanopillars for maximized optical absorption”, Nano Letters, Vol. 10, pp.3823-3827, 2010. [Cover article] [Technology Review, July, 2010][Nanotechweb, July, 2010]

12. M. Zheng,K. Takei, B. Hsia, H. Fang, X. Zhang, N. Ferralis, H. Ko, Y-L. Chueh, Y. Zhang, R. Maboudian, A. Javey, “Metal-catalyzed crystallization of amorphous carbon to graphene”, Applied Physics Letters, Vol. 96, p.063110, 2010.[Virtual Journal of Nanoscale Science & Technology, March 1st, 2010]

11. T. Kawano, T. Harimoto, A. Ishihara, K. Takei, T. Kawashima, S. Usui, M. Ishida, “Electrical interfacing between neurons and electronics via vertically integrated sub-4 um-diameter silicon probe arrays fabricated by vapour-liquid-solid growth”, Biosensors and Bioelectronics, Vol. 25, pp. 1809-1815, 2010.

10. Y-L. Chueh, Z. Fan, K. Takei, H. Ko, R. Kapadia, A. A. Rathore, N. Miller, K. Yu, M. Wu, E. Haller, A. Javey, “Black Ge based on crystalline/amorphous core/shell nanoneedle arrays”, Nano letters, Vol. 10, pp. 520-523, 2010. [Nanotechweb, February, 2010]

9. Y-L. Chueh, C. N. Boswell, C-W. Yuan, S. J. Shin, K. Takei, J. C. Ho, H. Ko, Z. Fan, E. E. Haller, D. C. Chrzan, A. Javey, “Nanoscale Structural Engineering via Phase Segregation: Au-Ge System”, Nano Letters, Vol. 10, pp. 393-397, 2010.

8. H. Ko, Z. Zhang, J. C. Ho, K. Takei, R. Kapadia, Y-L. Chueh, W. Cao, B. A. Cruden, A. Javey, “Flexible carbon nanofiber connectors with anisotropic adhesion properties”, Small, Vol. 6, pp. 22-26, 2010. [Nanotechweb, December, 2009]

7. K. Takei, T. Kawano, T. Kawashima, K. Sawada, H. Kaneko, M. Ishida, “Microtube-based electrode arrays for low invasive extracellular recording with a high signal-to-noise ratio”, Biomedical Microdevices, Vol. 12, pp. 41-48, 2010.

2009

6. J. C. Ho, A. C. Ford, Y-L. Chueh, P. W. Leu, O. Ergen, K. Takei, G. Smith, P. Majhi, J. Bennett, A. Javey, “Nanoscale Doping of InAs via Sulfur Monolayer”, Applied Physics Letters, Vol. 95, p. 072108, 2009. [Virtual Journal of Nanoscale Science & Technology, August 31st, 2009]

5. Z. Fan, J. C. Ho, T. Takahashi, R. Yerushalmi, K. Takei, A. C. Ford, Y-L. Chueh, A. Javey, “Toward the Development of Printable Nanowire Electronics and Sensors”, Advanced Materials, Vol. 21, pp. 3730-3743, 2009.

4. T. Takahashi, K. Takei, J. C. Ho, Y-L. Chueh, Z. Fan, A. Javey, Monolayer Resist for Patterned Contact Printing of Aligned Nanowire Arrays”, Journal of the American Chemical Society, Vol. 131, pp. 2102-2103, 2009

3. K. Takei, T. Kawashima, T. Kawano, H. Kaneko, K. Sawada, M. Ishida, “Out-of-plane microtube arrays for drug delivery – Liquid flow properties and an application to the nerve block test”, Biomedical Microdevices, Vol. 11, pp. 539-545, 2009.

2008

2. K. Takei, T. Kawashima, T. Kawano, H. Takao, K. Sawada, M. Ishida, “Integration of out-of-plane silicon dioxide microtubes, silicon microprobes, and on-chip NMOSFETs by selective Vapor-Liquid-Solid growth”, Journal of Micromechanics and Microengineering, Vol. 18, p.035033, 2008.[IOP Select & 2008 Highlights collection]

1. K. Takei, T. Kawashima, K. Sawada, M. Ishida, “Out-of-Plane Micro Tube Arrays for Biomedical Sensors using Vapor-Liquid-Solid Growth Method”, IEEE Sensors, Journal, Vol. 5, pp.470-475, 2008.

著書

  1. Takei (Editor), “Flexible and Stretchable Medical Devices” ISBN: 978-3-527-34183-2, 440 pages (Wiley-VCH 2018)
  2. 竹井邦晴, (分担執筆)「大面積印刷技術による触覚・摩擦・温度分布が計測可能な電子皮膚」, 狙い通りの触覚・触感をつくる技術(サイエンス&テクノロジー 2017).
  3. 竹井邦晴, (分担執筆)「ウェアラブルなフレキシブル健康管理パッチ実現に向けて」, ヘルスケア・ウェアラブルデバイスの開発(CMC出版 2017).
  4. 竹井邦晴, (分担執筆)「装着型フレキシブル健康管理デバイス」, IoTビジネス・機器開発における潜在ニーズと取り組み事例集(技術情報協会 2016).
  5. 竹井邦晴, (分担執筆)「無機ナノ材料の印刷技術とフレキシブル・ウェアラブルデバイスの応用」, ウェアラブルデバイスの小型,薄型化と伸縮,柔軟性の向上技術(技術情報協会 2015).
  6. Takei, “Nanomaterial-based flexible sensors” in Flexible Electronics: From Materials to Devices. Ed. G. Shen and Z. Fan, (World Scientific, 2016).
  7. Takei, “Wearable and Flexible Sensor Sheets toward Periodic Health Monitoring” in Wearable Electronics Sensors for Safe and Healthy Living. Ed. S. C. Mukhopadhyay, (Springer, 2015).
  8. Kapadia, K. Takei, H. Fang, “2-D InAs XOI FETs: Fabrication and Device Physics” in Micro- and Nanoelectronics: Emerging Device Challenges and Solutions. Ed. T. Brozek, (CRC Press, 2014).