Always‐On Gas Sensors: Perfectly Aligned, Air‐Suspended Nanowire Array Heater and Its Application in an Always‐On Gas Sensor (Adv. Funct. Mater. 39/2020)

In article number 2004448, Jun‐Bo Yoon and co‐workers propose the concept of two distinctive nanowire arrays with an ‘air‐bridge’ structure, with the first of the two nanowire arrays acting as a heater and the second nanowire array as the sensing material. The developed configuration greatly suppresses beam conduction loss to the substrate, overcoming the fundamental power consumption limits of conventional microheaters.