We calculate the optical attractive forces that occur between 30-nm Au or Ag nanocrystals when irradiated at visible wavelengths. These forces show resonances at dipolar plasmon wavelengths, similar to resonances in the near-field electromagnetic intensities. At MW/cm2 intensities, optical forces can be stronger than van der Waals forces and could be used to organize metallic particles. We also suggest that photonucleation of organic crystals from supersaturated liquid solutions may be caused by optical forces.
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机译:我们计算了在可见波长下照射时,在30纳米金或银纳米晶体之间发生的光学吸引力。这些力显示出在偶极等离子体激元波长处的共振,类似于在近场电磁强度中的共振。在MW / cm 2 sup>强度下,光学力可以比范德华力强,并且可以用来组织金属粒子。我们还建议,过饱和液体溶液中有机晶体的光核化可能是由光学力引起的。
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