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Askarpour, A.N., Zhao, Y., Alù, A.. (1394). Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods. نشریه مهندسی عمران امیرکبیر, 46(2), 15-22. doi: 10.22060/eej.2015.510
A.N. Askarpour; Y. Zhao; A. Alù. "Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods". نشریه مهندسی عمران امیرکبیر, 46, 2, 1394, 15-22. doi: 10.22060/eej.2015.510
Askarpour, A.N., Zhao, Y., Alù, A.. (1394). 'Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods', نشریه مهندسی عمران امیرکبیر, 46(2), pp. 15-22. doi: 10.22060/eej.2015.510
Askarpour, A.N., Zhao, Y., Alù, A.. Optical Chirality Enhancement in Twisted Arrays of Plasmonic Nano-rods. نشریه مهندسی عمران امیرکبیر, 1394; 46(2): 15-22. doi: 10.22060/eej.2015.510

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  XML 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. 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.
کلیدواژه ها [English]
Enantiomeric Excess, Optical Chirality, Plasmonics, Twisted Metamaterial
مراجع
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[16] A. I. Kuznetsov, A. E. Miroshnichenko, Y. Hsing Fu, V. Viswanathan, M. Rahmani, V. Valuckas, Z. Ying Pan, Y. Kivshar, D. S. Pickard, and B. Luk’yanchuk, “Split-ball resonator as a three-dimensional analogue of planar split-rings.,” Nat. Commun., vol. 5, p. 3104, Jan. 2014.
[17] E. Hendry, T. Carpy, J. Johnston, M. Popland, R. V Mikhaylovskiy, a J. Lapthorn, S. M. Kelly, L. D. Barron, N. Gadegaard, and M. Kadodwala, “Ultrasensitive detection and characterization of biomolecules using superchiral fields.,” Nat. Nanotechnol., vol. 5, no. 11, pp. 783–7, Nov. 2010.
[18] S. Yoo, M. Cho, and Q.-H. Park, “Globally enhanced chiral field generation by negative-index metamaterials,” Phys. Rev. B, vol. 89, no. 16, p. 161405, Apr. 2014.
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