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Single nanowire spectrometers

Research output: Contribution to journalArticlepeer-review

Anatoly Zayats, Pan Wang, Zongyin Yang, Tom Albrow-Owen, Hanxiao Cui, Jack Alexander-Webber, Fuxing Gu, Xiaomu Wang, Tien-Chun Wu, Minghua Zhuge, Calum Williams, Weiwei Cai, Lun Dai, Stephan Hofmann, Mauro Overend, Limin Tong, Qing Yang, Zhipei Sun, Tawfique Hasan

Original languageEnglish
Pages (from-to)1017-1020
Number of pages4
JournalScience
Volume365
Issue number6457
Early online date6 Sep 2019
DOIs
Accepted/In press12 Aug 2019
E-pub ahead of print6 Sep 2019
Published6 Sep 2019

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King's Authors

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.

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