The effect of surface roughness on the plasmonic response of individual sub-micron gold spheres.
نویسندگان
چکیده
Nanoscale surface corrugation strongly determines the plasmonic response of gold nanoparticles with dimensions of several tens of nanometres. Scattering spectra of individual spheres with a rough surface were found to red-shift and broaden. The plasmon modes exhibited quadrupole damping, in contrast to particles with smooth surfaces. Additionally, rougher spheres display a higher SERS activity, which demonstrates the crucial role of nanoscale surface texturing on the plasmonic response of gold particles.
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ورودعنوان ژورنال:
- Physical chemistry chemical physics : PCCP
دوره 11 28 شماره
صفحات -
تاریخ انتشار 2009