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RadTech Asia 2005

作者： Taketo Maeda mizuho kondo Tomiki Ikeda Chemical Resources Laboratory Tokyo Institute of TechnologyR1-114259 Nagatsuta Midori-ku Yokohama 226-8503 Japan Chemical Resources Laboratory Tokyo Institute of TechnologyR1-114259 Nagatsuta Midori-ku Yokohama 226-8503 Japan Chemical Resources Laboratory Tokyo Institute of TechnologyR1-114259 Nagatsuta Midori-ku Yokohama 226-8503 Japan

＜正＞ Azobenzene liquid-crystalline elastomers （LCEs） were prepared by copolymerization of an LC monomer and a cross-linker both containing azobenzene moieties. Two types of the LCE films were prepared: monodomain films and polydomains films. Photoirradiation of the monodomain films with UV linearly polarized light （LPL） gave rise to bending of the films toward actinic light along the polarization direction, when the light polarization was parallel to the rubbing direction. When the two directions were perpendicular to each other, the bending was isotropic without a preferential direction. On the other hand, exposure of the polydomain films to UV LPL led to bending of the films always along the polarization direction of the actinic light. This means that one can induce bending of the films along any direction precisely by choosing the polarization direction of the actinic light. Furthermore, the bent monodomain and polydomain films could revert to their initial flat states upon irradiation of visible light. In addition, mechanical force generated in the bending process was investigated by details. The photoinduced bending of the azobenzene LCEs supplies an efficient method for converting light energy to mechanical work, and the bending systems are hoped to be applied for the microscopical soft machines.

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Field-deployable rapid multiple biosensing system for detection of chemical and biological warfare agents

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Microsystems & Nanoengineering 2018年第1期4卷 498-508页

作者： Masato Saito Natsuko Uchida Shunsuke Furutani mizuho Murahashi Wilfred Espulgar Naoki Nagatani Hidenori Nagai Yuki Inoue Tomohiko Ikeuchi Satoshi kondo Hirotaka Uzawa Yasuo Seto Eiichi Tamiya Department of Applied Physics Graduate School of EngineeringOsaka University2-1YamadaokaSuitaOsaka 565-0871Japan Advanced Photonics and Biosensing Open Innovation Laboratory(PhotoBIO-OIL) National Institute of Advanced Industrial Science and Technology(AIST)Photonics Center Osaka University P3 Bldg2-1 Yamada-OkaSuitaOsaka 565-0871Japan Nanomaterials Research Institute National Institute of Advanced Industrial Science and Technology(AIST)1-1-1 HigashiTsukuba 305-8565Japan Health Research Institute National Institute of Advanced Industrial Science and Technology(AIST)1-8-31 MidorigaokaIkedaOsaka 563-8577Japan Department of Applied Chemistry Graduate School of EngineeringOkayama University of Science1-1Ridai-choKita-kuOkayama-shi 700-0005Japan National Research Institute of Police Science 6-3-1 KashiwanohaKashiwaChiba 277-0882Japan

The threat of biological and chemical terror acts remains a growing worldwide *** is therefore a need to develop appropriate technology for the detection of chemical and biological warfare agents,with early identification intended for use by first ***,we disclose the developed autonomous air sampling and detection system for evaluation of the presence of chemical and biological warfare agents that can be harmful to the *** current device utilizes the designed mist generator-assisted air collection system(338 l min^(−1))and biosensing chip technologies,such as electrochemical measurement,Au nanoparticle-based localized surface plasmon resonance,and rapid microfluidic chip PCR for detection of minute concentrations lower than the mean lethal dose(LD_(50))of nerve gases(sarin and VX),toxic proteins(BTX/A/Hc and ricin),and pathogens(anthrax simulant).An operation time of only 5–15 min is needed for the collection and detection;sample preparation is already integrated into the system without the need for direct human *** addition to the system’s sensitivity and ease of use,its portability makes it highly beneficial for first responders,which could aid in immediate risk assessment and mitigation of on-site events.

关键词： biological and chemical agents biosensing electrochemical detection LSPR PCR rapid detection

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