Journal ArticleDOI
Integrated Molar Chiral Sensing Based on High-Q Metasurface
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TLDR
For the first time, a standard procedure is established for the integrated molar chiral sensing with high sensitivity of CD spectrum and molar concentration over an individual metasurface with high sensitivities.Abstract:
Circular dichroism (CD) spectroscopy is conventionally utilized for the enantiomer-specific analysis of chiral samples, which is of great significance in academia and industry. Recently, metasurfaces have been introduced for enhancing the sensitivity of CD spectroscopy. However, the obtained CD spectrum alone cannot provide the enantiomer composition of a chiral sample. It should be normalized by the molar concentration of chiral molecules, which is usually measured on a different platform. Here, for the first time we demonstrate the integrated acquisition of CD spectrum and molar concentration over an individual metasurface with high sensitivities. High-Q resonances are supported on the metasurface, governed by bound states in the continuum. The generated superchiral field enables a 59-times enhancement of CD signal. Meanwhile, the refractive index-based detection of molar concentration achieves a large figure-of-merit of 80.6. Accordingly, a standard procedure is established for the integrated molar chiral sensing with high sensitivity.read more
Citations
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Journal ArticleDOI
Bound states in the continuum in resonant nanostructures: an overview of engineered materials for tailored applications
Multidimensional nanoscopic chiroptics
Yang Chen,Yang Chen,Wei Du,Wei Du,Qing Zhang,Oscar Ávalos-Ovando,Jing Wu,Qing-Hua Xu,Na Liu,Na Liu,Hiromi Okamoto,Alexander O. Govorov,Alexander O. Govorov,Qihua Xiong,Cheng-Wei Qiu +14 more
TL;DR: In this article, the authors focus on the progress in nanoscopic chiroptics through the lens of the associated dimensions, discussing the opportunities in integrated optics, photochemistry, quantum optics and biochemical synthesis and analysis.
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Giant Enhancement of Continuous Wave Second Harmonic Generation from Few-Layer GaSe Coupled to High-Q Quasi Bound States in the Continuum.
TL;DR: In this paper, the authors demonstrate a giant second-harmonic generation enhancement by coupling 2D GaSe flakes to silicon metasurfaces supporting quasi-bound states in the continuum (quasi-BICs) under continuous-wave (CW) operation.
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A Chirality-Based Quantum Leap
TL;DR: A survey of the experimental and theoretical fundamentals of chiral-influenced quantum effects, and a vision for their future roles in enabling room-temperature quantum technologies can be found in this article .
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Chiral plasmonic nanostructures: recent advances in their synthesis and applications
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TL;DR: In this paper , the main techniques employed to construct chiral plasmonic materials and metasurfaces, in particular using soft-chemistry approaches, are presented, and some applications of these nanostructures are discussed.
References
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