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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، بهمن 2014، صفحه 15-22 اصل مقاله (2.04 M) | ||
| نوع مقاله: Research Article | ||
| 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. | ||
| کلیدواژهها | ||
| Enantiomeric Excess؛ Optical Chirality؛ Plasmonics؛ Twisted Metamaterial | ||
| عنوان مقاله [English] | ||
| Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods | ||
| نویسندگان [English] | ||
| A.N. Askarpour1؛ 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 [English] | ||
| 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. | ||
| کلیدواژهها [English] | ||
| Enantiomeric Excess, Optical Chirality, Plasmonics, Twisted Metamaterial | ||
| مراجع | ||
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