Faculty Members

Reo Kometani/Associate Professor/Division of Environmental Sciences

Department of Human and Engineered Environmental Studies//Nano and microfabrication, Nanomechanics, Sensing devices and systems

Career Summary

2003: Graduated from Faculty of Science (Himeji Institute of Technology)
2005: Graduated from Graduate School of Science (Himeji Institute of Technology)
2007: Graduated from Graduate School of Material Science (University of Hyogo)
Received Ph.D. in Science (University of Hyogo)
2007-2012: Assistant Professor (University of Tokyo)
2012-2017: Lecturer (University of Tokyo)
2017: Associate Professor (University of Tokyo)

Educational Activities

Graduate School of Engineering: Field Work on Design and Manufacturing, Nano Micro Fabrication
Department of Mechanical Engineering: First-Year Seminar for Natural Science Students, Principles of Measurement and its Application
College of of Arts and Sciences: Information

Research Activities

Sensing devices and systems based on nanostructure and nanomechanical structure, such as Nanoelectromechanical systems (NEMS), are being researched in order to create novel sensing technologies that support human life, society, and industries. The nanomechanical structure is expected to enable the development of various sensing devices and systems because the resonance of the nanomechanical structure is strongly influenced by various matters and physical quantities (sensing targets such as gas molecules, light, heat, and electrical/magnetic force (Fig. 1).
One research topic is nanofabrication technologies using a charged particle beam (focused ion beam and electron beam), which plays an important role in various sensing devices and systems. Other research has been done on the material characteristics and functionality of nanostructures and nanomaterials and the control method of mechanical resonance, and nanomechanical structures have been functionalized as sensing devices. Specifically, by using the high sensitivity of the nanomechanical structure and the controllability of light of the photonic nanostructure, a sensing device for optical fundamental property measurement has been developed. This sensing device enables wavelength measurement and the analysis of low-concentration matter. It will be applied for advancing medical diagnostic technology with biogas (exhaled gas), analytical technology of environmental chemicals, and optical communication technology such as wavelength stabilization technology (Fig. 2).

Fig. 1 Sensing devices and systems for detection of low concentration matters and small physical quantities (gas molecules, light, heat, electrical/magnetical force, etc.).

Fig. 2 Nanostructure and nanomechanical structure fabrication using a charged particle beam (focused-ion-beam) and their applications to the development of resonant device and sensing device.


1) R. Kometani and S. Ishihara: Nanoelectromechanical device fabrications by 3-D nanotechnology using focused-ion beams, Sci. Technol. Adv. Mater., 10, 034501-1-7 (2009).
2) R. Kometani, S. Nishi, S. Warisawa, and S. Ishihara: Dynamic Characteristics Control of DLC Nano-Resonator Fabricated by Focused-Ion-Beam Chemical Vapor Deposition, Journal of Vacuum Science & Technology B, 29, pp. 06FE03-1-4 (2011).
3) Reo Kometani: Improving the properties of a graphene resonator, TANSO, 275, pp. 191-198 (2016).

Other Activities

The Japan Society of Applied Physics (JSAP)
The Japan Society for Precision Engineering (JSPE)
The Japan Society of Mechanical Engineers (JSME)

Future Plan

Innovative sensing devices and systems that enable what has been impossible before now will be researched in order to create advanced sensing technology that improves our daily lives, safety, industries, and health care.

Messages to Students

Passion is to invent novel technologies that enrich our lives and society while cherishing the sense of Interesting!.