Single-nanowire spectrometers - PubMed (original) (raw)

. 2019 Sep 6;365(6457):1017-1020.

doi: 10.1126/science.aax8814.

Tom Albrow-Owen 1, Hanxiao Cui 2, Jack Alexander-Webber 2, Fuxing Gu 3, Xiaomu Wang 4, Tien-Chun Wu 1, Minghua Zhuge 5, Calum Williams 2, Pan Wang 6, Anatoly V Zayats 6, Weiwei Cai 7, Lun Dai 8, Stephan Hofmann 2, Mauro Overend 2, Limin Tong 5, Qing Yang 5, Zhipei Sun 9 10, Tawfique Hasan 11

Affiliations

Single-nanowire spectrometers

Zongyin Yang et al. Science. 2019.

Abstract

Spectrometers with ever-smaller footprints are sought after for a wide range of applications in which minimized size and weight are paramount, including emerging in situ characterization techniques. We report on an ultracompact microspectrometer design based on a single compositionally engineered nanowire. This platform is independent of the complex optical components or cavities that tend to constrain further miniaturization of current systems. We show that incident spectra can be computationally reconstructed from the different spectral response functions and measured photocurrents along the length of the nanowire. Our devices are capable of accurate, visible-range monochromatic and broadband light reconstruction, as well as spectral imaging from centimeter-scale focal planes down to lensless, single-cell-scale in situ mapping.

Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.

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