پیوندهای مفید
آمار
| تعداد نشریات | 9 |
| تعداد شمارهها | 446 |
| تعداد مقالات | 5,719 |
| تعداد مشاهده مقاله | 8,018,483 |
| تعداد دریافت فایل اصل مقاله | 6,527,293 |
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 | ||
|
[1] H. D. Flack, “Louis Pasteurs discovery of molecular chirality and spontaneous resolution in 1848, together with a complete review of his crystallographic and chemical work,” Acta Crystallogr. Sect. A Found. Crystallogr., vol. 65, no. 5, pp. 371–389, 2009. [2] T. Eriksson, S. Björkman, and P. Höglund, “Clinical pharmacology of thalidomide,” Eur. J. Clin. Pharmacol., vol. 57, no. 5, pp. 365–376, Jul. 2001. [3] S. Erb, “Single-Enantiomer Drugs Poised for Further Market Growth,” Pharm. Technol., vol. 30, pp. s14–s18, 2006. [4] R. W. Woody and N. Berova, Circular Dichroism: Principles and Applications. Wiley-VCH, 2000. [5] D. M. Lipkin, “Existence of a New Conservation Law in Electromagnetic Theory,” J. Math. Phys., vol. 5, no. 5, p. 696, 1964. [6] Y. Tang and A. E. Cohen, “Optical Chirality and Its Interaction with Matter,” Phys. Rev. Lett., vol. 104, no. 16, p. 163901, Apr. 2010. [7] Y. Tang and A. E. Cohen, “Enhanced enantioselectivity in excitation of chiral molecules by superchiral light,” Science, vol. 332, no. 6027, pp. 333–6, Apr. 2011. [8] D. S. Bradshaw, J. M. Leeder, M. M. Coles, and D. L. Andrews, “Signatures of material and optical chirality: Origins and measures,” Chem. Phys. Lett., vol. 626, pp. 106–110, 2015. [9] K. Ding, J. Ng, L. Zhou, and C. T. Chan, “Realization of optical pulling forces using chirality,” Phys. Rev. A - At. Mol. Opt. Phys., vol. 89, no. 6, pp. 1–7, 2014. [10] M. H. Alizadeh and B. M. Reinhard, “Plasmonically Enhanced Chiral Optical Fields and Forces in Achiral Split Ring Resonators,” ACS Photonics, p. 150305111408006, 2015. [11] Y. Zhao, A. Askarpour, L. Sun, J. Shi, X. Li, and A. Alu, “High-Sensitivity Chiral Molecular Sensing with Optical Metasurfaces,” in CLEO: 2014, 2014, vol. 26, no. 9, p. FM3K.6. [12] Y. Cui, L. Kang, S. Lan, S. Rodrigues, and W. Cai, “Giant Chiral Optical Response from a Twisted-Arc Metamaterial.,” Nano Lett., Jan. 2014. [13] A. N. Askarpour, Y. Zhao, and A. Alù, “Wave propagation in twisted metamaterials,” Phys. Rev. B, vol. 90, no. 5, p. 054305, Aug. 2014. [14] A. N. Askarpour, Y. Zhao, and A. Alu, “Optical chirality enhancement in twisted metamaterials,” in 2014 Third Conference on Millimeter-Wave and Terahertz Technologies (MMWATT), 2014, pp. 1–4. [15] A. H. Sihvola, A. J. Viitanen, I. V. Lindell, and S. A. Tretyakov, Electromagnetic Waves in Chiral and Bi-Isotropic Media. Artech House, 1994. [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. [19] M. a Ordal, R. J. Bell, R. W. Alexander, L. L. Long, and M. R. Querry, “Optical properties of Au, Ni, and Pb at submillimeter wavelengths.,” Appl. Opt., vol. 26, no. 4, pp. 744–52, Feb. 1987. | ||
|
آمار تعداد مشاهده مقاله: 2,559 تعداد دریافت فایل اصل مقاله: 1,741 |
||