RT Journal Article
T1 Narrowing the plasmonic sensitivity distribution by considering the individual size of gold nanorods
A1 Henkel, Andreas
A1 Ye, Weixiang
A1 Khalavka, Yuriy
A1 Neiser, Andreas
A1 Lambertz, Christina
A1 Schmachtel, Sebastian
A1 Ahijado Guzmán, Rubén
A1 Sönnichsen, Carsten
AB The plasmonic nanoparticle sensitivity, sensing volume, and the signal-to-noise ratio are strongly dependent on the nanoparticle dimensions. It is difficult to chemically produce or purify nanoparticles with a size variation of less than 10%. This size variation induces a systematic error in sensing experiments that can be reduced when the exact size of each individual nanoparticle is known. In this work, we show how the size of gold nanorods can be estimated directly from the optical spectra of single nanoparticles by using the increase of radiation damping with the nanoparticle size. We verify our approach by comparing these spectrally estimated sizes with the precise sizes of exactly the same gold nanoparticles using scanning electron microscopy. Our method of estimating individual particle dimensions from spectroscopic data reduces the error in plasmonic sensing experiments by as much as 30%.
PB American Chemical Society
SN 1383-5866
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/93306
UL https://hdl.handle.net/20.500.14352/93306
LA eng
NO Andreas Henkel, Weixiang Ye, Yuriy Khalavka, Andreas Neiser, Christina Lambertz, Sebastian Schmachtel, Rubén Ahijado-Guzmán, and Carsten SönnichsenThe Journal of Physical Chemistry C 2018 122 (18), 10133-10137DOI: 10.1021/acs.jpcc.8b01863
DS Docta Complutense
RD 22 abr 2025