Semiconductor chip that detects exhaled gas with high sensitivity at room temperature

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IMAGE: IoT chemical sensor that detects minute quantities of gas molecules adsorbed on the surface of the thin nanosheet
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Credit: COPYRIGHT (C) TOYOHASHI UNIVERSITY OF TECHNOLOGY. ALL RIGHTS RESERVED.
Overview:
Third-year doctoral student Toshiaki Takahashi, associate professor Kazuhiro Takahashi, and their research team from the Department of Electrical and Electronic Information Engineering at Toyohashi University of Technology developed a testing chip using semiconductor micro-machining that can detect volatile gasses in exhaled breath in ppm concentrations at room temperature. A polymer that expands and contracts when gas is absorbed is formed on a flexibly deformable nanosheet, and the amount of deformation that occurs when a target gas is absorbed is measured, allowing gas to be detected at high sensitivity. The testing chip, which is formed in the size of a few square millimeters with semiconductor micro-machining technology, is expected to contribute to telehealth as an IoT gas sensor that can easily be used in the home for breath tests.

Related Keywords

Kazuhiro Takahashi ,Toshiaki Takahashi ,Department Of Electrical ,Electronic Information Engineering ,Toyohashi University ,Technology Engineering Computer Science ,Biomedical Environmental Chemical Engineering ,Biotechnology ,Electrical Engineering Electronics ,Superconductors Semiconductors ,Nanotechnology Micromachines ,Research Development ,துறை ஆஃப் மின் ,மின்னணு தகவல் பொறியியல் ,தொயோஹஷி பல்கலைக்கழகம் ,தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் ,உயிர் மருத்துவ சுற்றுச்சூழல் இரசாயன பொறியியல் ,உயிரி தொழில்நுட்பவியல் ,மின் பொறியியல் மின்னணுவியல் ,ஆராய்ச்சி வளர்ச்சி ,