A Caltech Library Service

Electrochemical Tuning of the Dielectric Function of Au Nanoparticles

Brown, Ana M. and Sheldon, Matthew T. and Atwater, Harry A. (2015) Electrochemical Tuning of the Dielectric Function of Au Nanoparticles. ACS Photonics, 2 (4). pp. 459-464. ISSN 2330-4022. doi:10.1021/ph500358q.

[img] PDF - Supplemental Material
See Usage Policy.


Use this Persistent URL to link to this item:


The tunable dielectric response of Au nanoparticles under electrochemical bias can be interpreted in terms of changes in the surface charge density, surface damping, and the near-surface volume fraction of the nanoparticles that experience a modified dielectric function, as well as changes in the index of refraction of the surrounding electrolyte medium. Using experimental bias-dependent extinction measurements, we derive a potential-dependent dielectric function for Au nanoparticles that accounts for changes in the physical properties contributing to the optical extinction.

Item Type:Article
Related URLs:
URLURL TypeDescription Information
Sheldon, Matthew T.0000-0002-4940-7966
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2015 American Chemical Society. Received: September 30, 2014. Publication Date (Web): March 10, 2015. The authors gratefully acknowledge support from the Department of Energy, Office of Science under Grant DE-FG02-07ER46405 (M.T.S. and H.A.A.) and for facilities of the DOE “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center (DE-SC0001293). A.M.B. acknowledges support from an NSF Graduate Research Fellowship. Helpful discussions with L. Sweatlock are gratefully acknowledged.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-07ER46405
Department of Energy (DOE)DE-SC0001293
NSF Graduate Research FellowshipUNSPECIFIED
Issue or Number:4
Record Number:CaltechAUTHORS:20150406-095154662
Persistent URL:
Official Citation:Electrochemical Tuning of the Dielectric Function of Au Nanoparticles Ana M. Brown, Matthew T. Sheldon, and Harry A. Atwater ACS Photonics 2015 2 (4), 459-464 DOI: 10.1021/ph500358q
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56372
Deposited By: Tony Diaz
Deposited On:06 Apr 2015 19:53
Last Modified:10 Nov 2021 20:58

Repository Staff Only: item control page