Journal
JOURNAL OF APPLIED PHYSICS
Volume 131, Issue 24, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0092412
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Funding
- ARPA-E OPEN 2018 Program [DE-AR0001052 G00006135]
- NSF PFI program [1941242]
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1941242] Funding Source: National Science Foundation
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This paper presents a novel method for measuring infrared radiation using a micromechanical photoswitch, which enables zero-standby power IR detection and frequency-tunable AC waveform generation.
This paper presents an interesting new method for measuring infrared (IR) radiation using a micromechanical photoswitch (MP). By leveraging the event-driven narrowband IR detection capability of an MP, electrostatic pull-in, and a novel integrated thermomechanical feedback mechanism, we show for the first time a zero-standby power IR sensor that can not only detect above-threshold IR power levels (> 600 nW), but also generates an oscillating electromechanical pulse waveform whose frequency is a function of the incident IR power level. The device design, the theoretical model for the proposed idea, and the experimental demonstration of the mechanism are shown. The unique capability of zero-standby power IR detection and frequency-tunable AC waveform generation from a constant input signal (IR radiation) without the need for additional electronics promises to enable new functionalities for such remote wake-up sensors beyond simply detection, with potential uses in microrobotics and low-power computing. Published under an exclusive license by AIP Publishing.
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