Enhanced Diffractive Circular Dichroism from Stereoscopic Plasmonic Molecule Array.

Liangliang Gu, Rong Shu, Xiangfeng Liu, Haifeng Hu, Qiwen Zhan

Abstract read

In one paragraph

Article in Nanomaterials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Liangliang GuSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.

Rong ShuKey Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.

Xiangfeng LiuKey Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.ORCID 0000-0002-6821-449X

Haifeng HuSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.ORCID 0000-0002-9447-1481

Qiwen ZhanSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.ORCID 0000-0001-8745-4213

Funding

National Natural Science Foundation of China 62005168, 62075132, 92050202Natural Science Foundation of Shanghai 22ZR1443100

6 · The paper itself

Abstract

Artificial nanostructures with large optical chiral responses have been intensively investigated recently. In this work, we propose a diffractive circular dichroism enhancement technique using stereoscopic plasmonic molecule structures. According to the multipole expansion analysis, the z-component of the electric dipole becomes the dominant chiral scattering mechanism during the interaction between an individual plasmonic molecule and the plane wave at a grazing angle. For a periodical structure with the designed plasmonic molecule, large diffractive circular dichroism can be obtained, which can be associated with the Wood-Rayleigh anomaly. Such a diffractive circular dichroism enhancement is verified by the good agreement between numerical simulations and experimental results. The proposed approach can be potentially used to develop enhanced spectroscopy techniques to measure chiral information, which is very important for fundamental physical and chemical research and bio-sensing applications.

Indexed as

ChiralityCircular DichroismLight DiffractionMultipole Expansionplasmonics

Identifiers

PMID37049269

DOI10.3390/nano13071175

PMCPMC10096713

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