NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Gold Nanoparticle Response to Nitro-Compounds Probed by Cavity Ring-Down Spectroscopy

Published

Author(s)

A C. Pipino, Vitalii I. Silin

Abstract

The optical response of Au nanoparticles to adsorption of NO2, SO2, C6H5NO2, and 2,4-dinitrotoluene (DNT) is probed using the cavity ring-down technique. A uniquely sensitive response, which appears characteristic of the -NO2 group, is observed for the surface plasmon resonance (SPR) of an approximately Gaussian distribution of Au nanoparticles having a mean diameter of 4.5 nm. Detection limits of 1.2 nmol/L, 7.6 nmol/L, and 0.17 nmol/L, are estimated for NO2, C6H5NO2, and DNT, respectively, while SO2 shows no response.
Citation
Chemical Physics Letters
Volume
404
Issue
No. 4-6
Pub Type
Journals

Keywords

adsorption, cavity ring-down, chemical sensing, explosives detection, nanoparticles, surface plasmon resonance

Citation

Pipino, A. and Silin, V. (2005), Gold Nanoparticle Response to Nitro-Compounds Probed by Cavity Ring-Down Spectroscopy, Chemical Physics Letters (Accessed October 10, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created March 1, 2005, Updated February 17, 2017
Was this page helpful?