Synthesized complex-frequency excitation for ultrasensitive molecular sensing

Kebo Zeng; Chenchen Wu; Xiangdong Guo; Fuxin Guan; Yu Duan; Lauren L. Zhang; Xiaoxia Yang; Na Liu; Qing Dai; Shuang Zhang

doi:10.1186/s43593-023-00058-y

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Synthesized complex-frequency excitation for ultrasensitive molecular sensing

光：快讯（英文） 2024年4卷

RESEARCH ARTICLE | Updated：2024-09-25

- Synthesized complex-frequency excitation for ultrasensitive molecular sensing
- Synthesized complex-frequency excitation for ultrasensitive molecular sensing
- Affiliations：
  
  New Cornerstone Science Laboratory, Department of Physics, University of Hong Kong, Hong Kong, China
  CAS Key Laboratory of Nanophotonic Materials and Devices, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
  Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
  2nd Physics Institute, University of Stuttgart, Pfaffenwaldring 57, 70569Stuttgart, Germany
  Max Planck Institute for Solid State Research, D-70569Stuttgart, Germany
  Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong, China
- Author bio：
  
  *Xiaoxia Yangyangxx@nanoctr.cn
  Na Liuna.liu@pi2.uni-stuttgart.de
  Qing Daidaiq@nanoctr.cn
  Shuang Zhangshuzhang@hku.hk
- Funds：
  
  New Cornerstone Science Foundation(AoE/P-701/20;17309021);National Key Research and Development Program of China(2021YFA1201500);National Natural Science Foundation of China(U2032206;51925203;52022025;52102160);Max Planck Society (Max Planck Fellow)
- DOI：10.1186/s43593-023-00058-y
  中图分类号：
- 收稿日期：2023-08-30，
  
  修回日期：2023-11-05，
  
  录用日期：2023-11-07，
  
  网络出版日期：2024-01-05，
  
  纸质出版日期：2024-12
- Accepted：
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Synthesized complex-frequency excitation for ultrasensitive molecular sensing[J]. 光：快讯（英文）, 2024,4.

Kebo Zeng, Chenchen Wu, Xiangdong Guo, et al. Synthesized complex-frequency excitation for ultrasensitive molecular sensing[J]. Elight, 2024, 4.
Synthesized complex-frequency excitation for ultrasensitive molecular sensing[J]. 光：快讯（英文）, 2024,4. DOI： 10.1186/s43593-023-00058-y.

Kebo Zeng, Chenchen Wu, Xiangdong Guo, et al. Synthesized complex-frequency excitation for ultrasensitive molecular sensing[J]. Elight, 2024, 4. DOI： 10.1186/s43593-023-00058-y.

摘要

Abstract

Sensors have emerged as indispensable analytical tools across a wide range of important fields

encompassing environmental monitoring

food safety

and public health. They facilitate early disease diagnosis

personalized medicine

and rapid detection of toxic agents. However

detecting trace molecules remains a significant challenge. Surface-enhanced infrared absorption (SEIRA) based on plasmonic nanostructures

particularly graphene

has emerged as a promising approach to enhance sensing sensitivity. While graphene-based SEIRA offers advantages such as high sensitivity and active tunability

intrinsic molecular damping weakens the interaction between vibrational modes and plasmons. Here

we demonstrate ultrahigh-sensitive molecular sensing based on synthesized complex-frequency waves (CFW). Our experiment shows that CFW can amplify the molecular signals (silk protein monolayer) detected by graphene-based sensor by at least an order of magnitude and can be universally applied to molecular sensing in different phases. Our approach is highly scalable and can facilitate the investigation of light-matter interactions

enabling diverse potential applications in fields such as optical spectroscopy

biomedicine and pharmaceutics.

关键词

Keywords

references

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