Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods

Askarpour, A.N.; Zhao, Y.; Alù, A.

doi:10.22060/eej.2015.510

دانشگاه صنعتی امیرکبیر

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Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods

AUT Journal of Electrical Engineering

مقاله 3، دوره 46، شماره 2، زمستان 2014، صفحه 15-22 اصل مقاله (2090 K)

نوع مقاله: Research Paper

شناسه دیجیتال (DOI): 10.22060/eej.2015.510

نویسندگان

A.N. Askarpour^* ¹؛ Y. Zhao²؛ A. Alù³

¹Assistant Professor, Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran.

²Faculty Member, Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78712 USA.

³Associate Professor, Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78712 USA.

چکیده

An important property of electromagnetic fields, which arises from the interaction between fields and chiral molecules, is called optical chirality. By enhancing this field property, while maintaining constant input power, we are able to increase absorption of circularly polarized light by chiral molecules of a certain handedness. This enhancement is achieved through the use of achiral plasmonic nano-particles in conjunction with the twisted metamaterials. Optical chirality enhancement (OCE) has an important application in sensing enantiomers of chiral molecules. Here, we present a preliminary scheme to measure enantiomeric excess in mixtures of chiral molecules using OCE boosted by twisted metamaterials. This scheme does not require measurement of a frequency shift in the circular dichroism response.

کلیدواژه ها

Enantiomeric Excess؛ Optical Chirality؛ Plasmonics؛ Twisted Metamaterial

عنوان مقاله [English]

Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods

نویسندگان [English]

A.N. Askarpour, Y. Zhao, A. Alù

چکیده [English]

کلیدواژه ها [English]

Enantiomeric Excess, Optical Chirality, Plasmonics, Twisted Metamaterial

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