Enantiomer-Selective Molecular Sensing in the Nonlinear Optical Regime via Upconverting Chiral Metamaterials

Kyu-Tae Lee; Byunghoon Kim; Lakshmi RajuSean P. RodriguesDoo-Hyun KoWenshan Cai

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Enantiomer-Selective Molecular Sensing in the Nonlinear Optical Regime via Upconverting Chiral Metamaterials

机译：Enantiomer-Selective Molecular Sensing in the Nonlinear Optical Regime via Upconverting Chiral Metamaterials

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Enantiomers are chiral isomers in which the isomer’s structure itself andits mirror image cannot be superimposed on each other. Enantiomer selectivesensing is critical as enantiomers exhibit distinct functionalities to theirmirror image. Discriminating between enantiomers by optical methods hasbeen widely used as these techniques provide nondestructive characterization,however, they are constrained by the intrinsically small chirality of themolecules. Here, a method to effectively discriminate chiral analytes in thenonlinear regime is demonstrated, which is facilitated by an upconvertingchiral plasmonic metamaterial. The different handedness of the chiral moleculesinteracts with the chiral metamaterial platform, which leads to a changein the circular dichroism of the chiral metamaterial in the near-infraredregion. The contrast of the circular dichroism is identified by the upconvertedsignal in the visible region.

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《Advanced functional materials》 |2022年第43期|2208641.1-2208641.9|共9页
作者
Kyu-Tae Lee; Byunghoon Kim; Lakshmi RajuSean P. RodriguesDoo-Hyun KoWenshan Cai;
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作者单位

School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlanta, GA 30332, USA;

Department of ChemistryPrinceton UniversityPrinceton, NJ 08544, USA;

Department of ChemistrySungkyunkwan UniversitySuwon 16419, Republic of KoreaSchool of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlanta, GA 30332, USA School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlanta, GA 30332, USA;

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正文语种英语
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chiral biosensing; circular dichroism; metamaterials; upconversion;

Enantiomer-Selective Molecular Sensing in the Nonlinear Optical Regime via Upconverting Chiral Metamaterials

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