Gold nanoparticle ensembles as heaters and actuators: melting and collective plasmon resonances

Gold nanoparticle ensembles as heaters and actuators: melting and collective plasmon resonances
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DOI:
10.1007/s11671-006-9015-7
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发表时间:
2006-07-26
影响因子:
--
通讯作者:
Kotov, Nicholas A.
Kotov, Nicholas A.
中科院分区:
材料科学3区
文献类型:
--
作者:
Govorov, Alexander O.;Zhang, Wei;Skeini, Timur;Richardson, Hugh;Lee, Jaebeom;Kotov, Nicholas A.

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我们描述了光驱动金纳米颗粒(NPs)可以显著提高温度甚至熔化周围基质的特殊条件。加热和熔化过程在光照射下发生,并涉及等离子体共振。对于基质,我们考虑水、冰和聚合物。如果纳米颗粒尺寸足够大,就可以熔化和加热基质。由于金属体积和电场放大的增加,在NPs系综中可以出现加热效应的显著增强。
We describe the peculiar conditions under which optically driven gold nanoparticles (NPs) can significantly increase temperature or even melt a surrounding matrix. The heating and melting processes occur under light illumination and involve the plasmon resonance. For the matrix, we consider water, ice, and polymer. Melting and heating the matrix becomes possible if a nanoparticle size is large enough. Significant enhancement of the heating effect can appear in ensembles of NPs due to an increase of a volume of metal and electric-field amplification.
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