Common sensor: A micro-hotplate sensor can be used in battery-powered devices and automotive units

摘要

A LOW-COST sensor developed by a Cambridge University spin-out could lead to inexpensive handheld gas monitors. The devices could be used to detect toxic and combustible gases in automotive, environmental and other applications. The sensor, from Cambridge CMOS Sensors, is based on a tungsten micro-hotplate with integrated electronics. The electronics are fabricated using the same silicon-on-insulator CMOS process used to make integrated circuits. The developers claim that their design overcomes previous technical challenges that prevented resistive gas sensors from being used in portable, battery-powered instruments and low-power automotive units.