Beating thermal noise in a dynamic signal measurement by a nanofabricated cavity optomechanical sensor.

Autor:	Wang M; Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA., Perez-Morelo DJ; Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA., Ramer G; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA.; Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.; Institute of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria., Pavlidis G; Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Schwartz JJ; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA.; Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Yu L; Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Ilic R; Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Centrone A; Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Aksyuk VA; Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
Jazyk:	angličtina
Zdroj:	Science advances [Sci Adv] 2023 Mar 17; Vol. 9 (11), pp. eadf7595. Date of Electronic Publication: 2023 Mar 15.
DOI:	10.1126/sciadv.adf7595
Abstrakt:	Thermal fluctuations often impose both fundamental and practical measurement limits on high-performance sensors, motivating the development of techniques that bypass the limitations imposed by thermal noise outside cryogenic environments. Here, we theoretically propose and experimentally demonstrate a measurement method that reduces the effective transducer temperature and improves the measurement precision of a dynamic impulse response signal. Thermal noise-limited, integrated cavity optomechanical atomic force microscopy probes are used in a photothermal-induced resonance measurement to demonstrate an effective temperature reduction by a factor of ≈25, i.e., from room temperature down as low as ≈12 K, without cryogens. The method improves the experimental measurement precision and throughput by >2×, approaching the theoretical limit of ≈3.5× improvement for our experimental conditions. The general applicability of this method to dynamic measurements leveraging thermal noise-limited harmonic transducers will have a broad impact across a variety of measurement platforms and scientific fields.
Databáze:	MEDLINE
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