Alexander-Webber, Jack Allen
Science (New York, N.Y.)
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Yang, Z., Albrow-Owen, T., Cui, H., Alexander-Webber, J. A., Gu, F., Wang, X., Wu, T., et al. (2019). Single-nanowire spectrometers.. Science (New York, N.Y.), 365 (6457), 1017-1020. https://doi.org/10.1126/science.aax8814
Spectrometers with ever-smaller footprints are sought after for a wide range of applications where minimized size and weight is paramount, including emerging in-situ characterization techniques. We report on an ultra-compact micro-spectrometer 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.
EPSRC (EP/M013812/1, EP/L016087/1), the Royal Commission for the Exhibition of 1851, CRUK Pioneer Award (C55962/A24669), , Business Finland (A-Photonics), Academy of Finland, ERC (834742), EU Horizon 2020 (820423), the Cambridge Trust, the Royal Society.
Royal Society (IE161330)
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External DOI: https://doi.org/10.1126/science.aax8814
This record's URL: https://www.repository.cam.ac.uk/handle/1810/296461
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