Lukianova-Hleb Ekaterina Y, Lapotko Dmitri O
A. V. Lykov Heat and Mass Transfer Institute, 15 P. Brovka Street, Minsk, 220072, Belarus.
Nano Lett. 2009 May;9(5):2160-6. doi: 10.1021/nl9007425.
Transient photothermal phenomena in the environment of light-absorbing plasmonic nanoparticles, heating and evaporation, were shown to influence the optical scattering efficacy of such nanoparticles, when they absorb and scatter the light. The heating of the environment suppresses the optical scattering, while the evaporation enhances the scattering by the nanoparticles. These opposite effects have transient, local, and thermal nature and significantly (more than 10 times) influence the optical contrast of the nanoparticles as shown for gold spheres in water.
在吸光等离子体纳米颗粒的环境中,瞬态光热现象,即加热和蒸发,在这些纳米颗粒吸收和散射光时,被证明会影响其光学散射效率。环境的加热会抑制光学散射,而蒸发则会增强纳米颗粒的散射。这些相反的效应具有瞬态、局部和热的性质,并且如水中金纳米球所示,会显著(超过10倍)影响纳米颗粒的光学对比度。