"Many-body Effects in Optically-trapped Metallic Nanoparticles under Thermal Fluctuations" (◆Illustration was selected for the front cover picture)
"Many-body Effects in Optically-trapped Metallic Nanoparticles under Thermal Fluctuations" (◆Illustration was selected for the front cover picture)
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《热波动下光捕获金属纳米颗粒的多体效应》（封面图片选用插图）
DOI：
10.1002/pssc.201200334
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Mamoru Tamura,
中科院分区：
文献类型：
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作者：
Takuya Iida*;Mamoru Tamura,
我们从理论上研究了金属纳米颗粒在聚焦激光束作用下的光致多体动力学和室温下液体介质中的热涨落。表面电离的影响也被考虑在内。随着激光强度的增加，纳米粒子的无规运动受到介质分子碰撞的抑制，从而使纳米粒子从扩散态向亚稳态的转变成为可能。所获得的结果将提供一种新的方法来控制组装结构的纳米粒子的相变下的光调制粒子间的力和热波动的平衡。这种机制与基于自发粒子间力的常规气-液-固转变显著不同，因为它基于由光控制的瞬态各向异性力（© 2012 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆）。
We have theoretically studied light‐induced many‐body dynamics of metallic nanoparticles (NPs) under the focused laser beam and the thermal fluctuations in liquid medium at room temperature. The effect of surface ionization is also taken into account. The random motion of NPs by collisions of medium molecules can be suppressed with increasing the laser intensity, and the transition from a diffusive state to metastable states of metallic NPs is possible. Obtained results will provide a novel way to control the phase transitions in assembled structure of NPs under the balance of optically‐modulated interparticle forces and thermal fluctuations. Such a mechanism is significantly different from a conventional gas‐liquid‐solid transition based on spontaneous interparticle forces because it is based on the transient anisotropic force controlled by light (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)