Toshihiro Itoh / Professor / Division of Environmental Sciences
Department of Human and Engineered Environmental Studies / / Wireless Sensors, Large Area Device Integration

Career Summary
1988: Graduated from the Faculty of Engineering (University of Tokyo)
1994: Received Ph.D. in Engineering from the University of Tokyo
1994: Research associate (University of Tokyo)
1995: Lecturer (University of Tokyo)
1998-99: Visiting Researcher at Fraunhofer IZM (Germany)
1999: Associate Professor (University of Tokyo)
2007: Group Leader, AMRI, AIST
2010: Deputy Director, UMEMSME, AIST
2015: Professor (University of Tokyo)

Educational Activities
(From FY2016)
Research Activities
Large Area Device Integration
A continuous nano/micro-machining and integration process for fiber substrates has been developed to realize a new type of large area flexible device. The process consists of continuous coating of high-quality functional films, high-speed continuous 3D nano/micro-machining, and a weaving integration of hetero functionalized fibers. A microspring contact array on fiber substrates has been developed using this process 1).
Ultra Low Power Wireless Sensor Nodes
Ultra low power MEMS sensors 2), custom RF-LSI, and an ultra-short packet wireless communication system have been developed. The average power consumption of the prototyped wireless sensor nodes with activity and temperature sensors was estimated as approximately 1 micro W.

Distributed N/MEMS watch human environments.
1) S. Khumpuang, A. Ohtomo, K. Miyake and T. Itoh: Fabrication and evaluation of a microspring contact array using a reel-to-reel continuous fiber process, J. Micromech. Microeng. 21(2011), No.10, 105019.
2) T. Kobayashi, H. Okada, T. Masuda, R. Maeda and T. Itoh: A digital output accelerometer using MEMS-based piezoelectric accelerometers and arrayed CMOS inverters with satellite capacitors, Smart Mater. Struct., 20(2011), 065017.
Other Activities
The Japan Society of Precision Engineering (JSPE)
The Japan Institute of Electronics Packaging (JIEP)
Future Plan
Based on N/MEMS packaging and integration technologies, the Human Environment Monitoring Laboratory aims to promote the research and development of sensing technologies for human environments including human support systems and living and working environments as well as social infrastructures. In order to apply the developed technologies for practical use, field tests and demonstrations are actively being conducted.
Messages to Students
It is important for engineering researchers to confront problems enthusiastically.