As one kind of noble metal nanostructures, the plasmonic gold nanostructures possess unique optical properties as well as good biocompatibility, satisfactory stability, and multiplex functionality. These distinctive advantages make the plasmonic gold nanostructures an ideal medium in developing methods for biosensing and bioimaging. In this review, the optical properties of the plasmonic gold nanostructures were firstly introduced, and then biosensing in vitro based on localized surface plasmon resonance, Rayleigh scattering, surface-enhanced fluorescence, and Raman scattering were summarized. Subsequently, application of the plasmonic gold nanostructures for in vivo bioimaging based on scattering, photothermal, and photoacoustic techniques has been also briefly covered. At last, conclusions of the selected examples are presented and an outlook of this research topic is given. 

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中文翻译：

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用于生物传感和生物成像的等离子体金纳米结构

作为一种贵金属纳米结构，等离子体金纳米结构具有独特的光学性质以及良好的生物相容性、令人满意的稳定性和多重功能。这些独特的优势使等离子体金纳米结构成为开发生物传感和生物成像方法的理想介质。在这篇综述中，首先介绍了等离子体金纳米结构的光学特性，然后总结了基于局域表面等离子体共振、瑞利散射、表面增强荧光和拉曼散射的体外生物传感。随后，还简要介绍了等离子体金纳米结构在基于散射、光热和光声技术的体内生物成像中的应用。终于， 

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