【摘 要】
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Plasmonic metal nanocrystals exhibit extraordinary optical properties [1,2].Their plasmon resonance wavelengths can be synthetically varied.Their absorption/sca
【机 构】
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DepartmentofPhysics,TheChineseUniversityofHongKong,Shatin,HongKongSAR,China
论文部分内容阅读
Plasmonic metal nanocrystals exhibit extraordinary optical properties [1,2].Their plasmon resonance wavelengths can be synthetically varied.Their absorption/scattering cross-sections normalized against their physical sizes are larger than those of atoms,ions,molecules,and semiconductor nanocrystals.Upon resonant excitation,they can concentrate light into near-field regions close to the metal surface.Moreover,the local density of photonic states around metal nanocrystals are largely enhanced around their plasmon wavelengths.These plasmonic features have enabled a number of applications with metal nanocrystals in a wide range of areas,such as imaging,sensing,nanomedicine,enhancement of linear and nonlinear optical signals,optics and optoelectronics.
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