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报告题目 |
Manipulating Light Using Sharp Tips and Nanowires |
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报告时间 |
2015年3月31日下午2:30 |
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报告地点 |
微尺度国家实验室一楼科技展厅 |
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报告摘要 |
The interaction of light and matter includes an evanescent component that is tightly bound at the material interface. Near a sharp tip, these optical “near fields” can be concentrated to below the diffraction limit, thereby enabling optical microscopy with nano-scale resolution. The near-field interactions between a single emitter and the tip can also modify the local density of optical states, which can impart simultaneous control over the emission direction and polarization, and can be used to suppress the intensity variations resulting from quantum fluctuations (blinking). In this talk, I will discuss some recent work showing how metallic tips can modify the emission properties of semiconductor nanocrystal quantum dots. I will also discuss the novel optical properties of gallium nitride nanowires, which exhibit light trapping and surface-specific fluorescence spectra. These nanowires are being investigated for solar-driven photo-electrochemical water splitting. |
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报告人 |
Dr. Jordan Gerton Associate Professor，University of Utah |
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Dr. Jordan Gerton is an Associate Professor of Physics and Astronomy at the University of Utah and is the Director of the Center for Science and Mathematics Education. He has had many excellent students, including Yuchen Yang, a graduate of USTC. Prof. Gerton’s interests include nanophotonics, near-field optics, far-field super-resolution microscopy, nano-materials characterization, and molecular biophysics. | |
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主办单位：化学与材料科学学院 | |