journal article·2019-08-01Open access

Enhanced thermal sensitivity of MEMS bolometers integrated with nanometer-scale hole array structures

Ya Zhang, Boqi Qiu, Naomi Nagai, Masahiro Nomura, Sebastian Volz, Kazuhiko Hirakawa

AIP Advances· Volume 9· Issue 8

Abstract

We have fabricated two-dimensional nanometer-scale hole array structures on GaAs doubly-clamped microelectromechanical system (MEMS) beam resonators to modulate their thermal properties. Owing to the reduction in the thermal conductance of the MEMS beams by introducing the hole array structures, the nano-porous MEMS bolometers show 2-3 times larger thermal sensitivities than the unpatterned reference sample. Furthermore, since the heat capacitance of the MEMS beams is also reduced by introducing the hole array, the thermal decay time of the patterned MEMS beams is increased only by about 30-50%, demonstrating the effectiveness of the hole array structures for enhancing the thermal sensitivities of bolometers without significantly deteriorating their operation bandwidths.
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Research context

OpenAlex topics: Mechanical and Optical Resonators · Advanced MEMS and NEMS Technologies · Thermal properties of materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Industrial Science, University of Tokyo 1 , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan

Institute of Engineering, Tokyo University of Agriculture and Technology 2 , Koganei, Tokyo, 184-8588, Japan

Institute for Nano Quantum Information Electronics, University of Tokyo 3 , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan

LIMMS/CNRS-IIS, UMI 2820 4 , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan

Funding

Ministry of Education, Culture, Sports, Science and Technology · Japan Society for the Promotion of Science · Collaborative Research Based on Industrial Demand

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