Optical characterization of chiral plasmonic nanostructures |
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| Institution: | 1. School of electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing, 210094 Jiangsu, China;2. Group of Displays and Photonic Applications (GDAF-UC3M). Carlos III University of Madrid. Leganes, 28911 Madrid, Spain;3. National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, Anhui, China;4. Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, Texas 78712, USA;5. Laboratory of Nanophotonics and Metamaterials, ITMO University, Saint Petersburg 197101, Russia;1. Institute of Applied Mechanics, National Taiwan University, 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan;2. Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hwa 1st Rd., Kwei-Shan, Taoyuan, Taiwan;3. Department of Mechanical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan;4. Proton and Radiation Therapy Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan |
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| Abstract: | Chiral plasmonic nanomaterials can have circular dichroism and optical rotatory dispersion effects orders of magnitude larger than those observed in ordinary chiral molecules. Understanding this fascinating class of materials has proved challenging and has motivated several research groups to develop entirely new experimental techniques for characterizing chirality driven optical properties. In this review, we first describe the classical method of circular dichroism which measures linear, far-field responses from an ensemble population. We then go on to describe several of the more recently developed methods to probe chiral nanostructures as they expand into the domains of non-linear, near-field, and single particle measurements including spatially and spectrally resolved techniques. |
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| Keywords: | Chirality Localized surface plasmons Single particle spectroscopy Nonlinear spectroscopy Near-field optical microscopy |
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