Abstract
Extinction of light by material particles stems from losses incurred by absorption or scattering. Theextinction cross section is usually treated as an additive quantity, leading to the exponential laws that govern the macroscopic attenuation of light. In this Letter, we demonstrate that the extinction cross section of a large gold nanoparticle can be substantially reduced-i.e., the particle becomes more transparent-if a single molecule is placed in its near field. This partial cloaking effect results from a coherent plasmonic interaction between the molecule and the nanoparticle, whereby each of them acts as a nanoantenna to modify the radiative properties of the other.
Highlights
Extinction of light by material particles stems from losses incurred by absorption or scattering
In this Letter, we demonstrate that the extinction cross section of a large gold nanoparticle can be substantially reduced—i.e., the particle becomes more transparent—if a single molecule is placed in its near field
A gold nanoparticle (GNP) of diameter less than 100 nm can extinguish more than half the power of a laser beam if placed in its focus [1,2]
Summary
Extinction of light by material particles stems from losses incurred by absorption or scattering. A beam from a Ti:sapphire laser is coupled to the sample via an aspheric lens and the SIL, reaching a focus spot with a full width at half-maximum (FWHM) of 270 nm assessed by mapping the fluorescence of a single molecule.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
