Charge transfer between sensing and targeted metal nanoparticles in indirect nanoplasmonic sensors
Journal article, 2017
In indirect nanoplasmonic sensors, the plasmonic metal nanoparticles are adjacent to the material of interest, and the material-related changes of their optical properties are used to probe that material. If the latter itself represents another metal in the form of nanoparticles, its deposition is accompanied by charge transfer to or from the plasmonic nanoparticles in order to equalize the Fermi levels. We estimate the value of the transferred charge and show on the two examples, nanoparticle sintering and hydride formation, that the charge transfer has negligible influence on the probed processes, because the effect of charge transfer is less important than that of nanoparticle surface energy. This further corroborates the non-invasive nature of nanoplasmonic sensors.
Nanoplasmonic sensors
Ostwald ripening
hydride formation
Charge transfer
shape
model
physical review b
Science & Technology - Other Topics
Hydrogen
v33
distributions
au
iles sm
p7983
size
Supportedmetal nanoparticles
Physics
nanoantennas
pd
1986
heterodimers
particles
Author
Vladimir Zhdanov
Chalmers, Physics, Chemical Physics
Christoph Langhammer
Chalmers, Physics, Chemical Physics
Physica E: Low-Dimensional Systems and Nanostructures
1386-9477 (ISSN)
Vol. 87 205-208Areas of Advance
Nanoscience and Nanotechnology
Roots
Basic sciences
Subject Categories
Other Physics Topics
Nano Technology
DOI
10.1016/j.physe.2016.10.023