Plasmonic optical tweezers that stem from the need to trap and manipulate ever smaller particles using non-invasive optical forces, have made significant contributions to precise particle motion control at the nanoscale. In addition to the optical forces, other effects have been explored for particle manipulation. For instance, the plasmonic heat delivery mechanism generates micro- and nanoscale optothermal hydrodynamic effects, such as natural fluid convection, Marangoni fluid convection and thermophoretic effects that influence the motion of a wide range of particles from dielectric to biomolecules. In this review, a discussion of optothermal effects generated by heated plasmonic nanostructures is presented with a specific focus on applications to optical trapping and particle manipulation. It provides a discussion on the existing challenges of optothermal mechanisms generated by plasmonic optical tweezers and comments on their future opportunities in life sciences.

中文翻译：

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等离子体纳米结构产生的温度诱导效应对粒子传递和操纵的作用：综述

等离子体光学镊子源于使用非侵入性光学力捕获和操纵更小的粒子的需要，为纳米级的精确粒子运动控制做出了重大贡献。除了光学力之外，还探索了粒子操纵的其他影响。例如，等离子体热传递机制会产生微米级和纳米级的光热流体动力学效应，例如自然流体对流、Marangoni 流体对流和热泳效应，这些效应会影响从电介质到生物分子的各种粒子的运动。在这篇综述中，讨论了由加热的等离子体纳米结构产生的光热效应，特别关注光捕获和粒子操纵的应用。