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An international team of researchers has developed a low-power gas sensor chip that can operate at room temperature, making possible the development of personal air-quality monitoring devices that we could carry around with us. In research described in the journal Science Advances, the team of researchers fabricated a chemical-sensitive field-effect transistor (CS-FET) platform based on 3.5-nanometer-thin silicon channel transistors. The platform, which is highly sensitive but consumes a small amount of power, can detect a wide range of different gases.