| Title | Single-nanowire spectrometers |
| Authors | Yang, Zongyin Albrow-Owen, Tom Cui, Hanxiao Alexander-Webber, Jack Gu, Fuxing Wang, Xiaomu Wu, Tien-Chun Zhuge, Minghua Williams, Calun Wang, Pan Zayats, Anatoly V. Cai, Weiwei Dais, Lun Hofmann, Stephan Overend, Mauro Tong, Limin Yang, Qing Sun, Zhipei Hasan, Tawfique |
| Affiliation | Univ Cambridge, Cambridge Graphene Ctr, Cambridge CB3 0FA, England Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China Kings Coll London, Dept Phys, London WC2R 2LS, England Kings Coll London, London Ctr Nanotechnol, London WC2R 2LS, England Shanghai Jiao Tong Univ, Sch Mech Engn, Educ Minist Power Machinery & Engn, Key Lab, Shanghai 200240, Peoples R China Peking Univ, Sch Phys, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China Aalto Univ, Dept Elect & Nanoengn, Tietotie 3, FI-00076 Espoo, Finland Aalto Univ, Dept Appl Phys, QTF Ctr Excellence, FI-00076 Espoo, Finland |
| Issue Date | 2019 |
| Publisher | SCIENCE |
| 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. |
| URI | http://hdl.handle.net/20.500.11897/545224 |
| ISSN | 0036-8075 |
| DOI | 10.1126/science.aax8814 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 |
