TY - JOUR
T1 - Superabsorption of light by nanoparticles
AU - Ladutenko, Konstantin
AU - Belov, Pavel
AU - Peña-Rodríguez, Ovidio
AU - Mirzaei, Ali
AU - Miroshnichenko, Andrey E.
AU - Shadrivov, Ilya V.
N1 - Publisher Copyright:
© 2015 The Royal Society of Chemistry.
PY - 2015/12/7
Y1 - 2015/12/7
N2 - Nanoparticles have a fundamental limit as to how much light they can absorb. This limit is based on the finite number of modes excited in the nanoparticle at a given wavelength and maximum absorption capacity per mode. The enhanced absorption can be achieved when each mode supported by the nanoparticle absorbs light up to the maximum capacity. Using a stochastic optimization algorithm, we design multilayer nanoparticles, in which we can make several resonant modes overlap at the same frequency resulting in superabsorption. We further introduce the efficiency of the absorption for a nanoparticle, which is the absorption normalized by the physical size of the particle, and show that efficient absorbers do not always operate in the superabsorption regime.
AB - Nanoparticles have a fundamental limit as to how much light they can absorb. This limit is based on the finite number of modes excited in the nanoparticle at a given wavelength and maximum absorption capacity per mode. The enhanced absorption can be achieved when each mode supported by the nanoparticle absorbs light up to the maximum capacity. Using a stochastic optimization algorithm, we design multilayer nanoparticles, in which we can make several resonant modes overlap at the same frequency resulting in superabsorption. We further introduce the efficiency of the absorption for a nanoparticle, which is the absorption normalized by the physical size of the particle, and show that efficient absorbers do not always operate in the superabsorption regime.
UR - http://www.scopus.com/inward/record.url?scp=84947220621&partnerID=8YFLogxK
U2 - 10.1039/c5nr05468k
DO - 10.1039/c5nr05468k
M3 - Article
SN - 2040-3364
VL - 7
SP - 18897
EP - 18901
JO - Nanoscale
JF - Nanoscale
IS - 45
ER -