Xinchuan Du, Yang Wang, Yi Cui, Gaofeng Rao, Jianwen Huang, Xinrui Chen, Ting Zhou, Chunyang Wu, Zongyin Yang, Hanxiao Cui, Yicheng Zhao, Jie Xiong
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A microspectrometer with dual-signal spectral reconstruction
Computational spectrometers with small footprints can be integrated with other devices for use in applications such as chemical analysis, medical diagnosis and environmental monitoring. However, their spectral resolution is limited because conventional photoelectric detectors only measure an amplitude-dependent response to incident light. Here we show that a deformable two-dimensional homojunction can be used to create a microspectrometer with dual-signal spectral reconstruction. The semifloating molybdenum disulfide homojunction exhibits a giant electrostriction effect through which the kinetics of photo-generated carriers can be manipulated via an in-plane electric field generated by gate voltage. By leveraging the tunability of both amplitude and relaxation time of the photoelectric response, a dual-signal response can be used with a deep neural network algorithm to reconstruct an incident spectrum. Our dual-signal microspectrometer has a footprint of 20 × 25 µm2, offers a resolution of 1.2 nm and has a spectral waveband number of 380, which is comparable to benchtop spectrometers.
期刊介绍：
Nature Electronics is a comprehensive journal that publishes both fundamental and applied research in the field of electronics. It encompasses a wide range of topics, including the study of new phenomena and devices, the design and construction of electronic circuits, and the practical applications of electronics. In addition, the journal explores the commercial and industrial aspects of electronics research.
The primary focus of Nature Electronics is on the development of technology and its potential impact on society. The journal incorporates the contributions of scientists, engineers, and industry professionals, offering a platform for their research findings. Moreover, Nature Electronics provides insightful commentary, thorough reviews, and analysis of the key issues that shape the field, as well as the technologies that are reshaping society.
Like all journals within the prestigious Nature brand, Nature Electronics upholds the highest standards of quality. It maintains a dedicated team of professional editors and follows a fair and rigorous peer-review process. The journal also ensures impeccable copy-editing and production, enabling swift publication. Additionally, Nature Electronics prides itself on its editorial independence, ensuring unbiased and impartial reporting.
In summary, Nature Electronics is a leading journal that publishes cutting-edge research in electronics. With its multidisciplinary approach and commitment to excellence, the journal serves as a valuable resource for scientists, engineers, and industry professionals seeking to stay at the forefront of advancements in the field.
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