Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Wide-field imaging of single nanoparticle extinction with sub-nm2 sensitivity

Payne, Lukas, Langbein, Wolfgang ORCID: https://orcid.org/0000-0001-9786-1023 and Borri, Paola ORCID: https://orcid.org/0000-0002-7873-3314 2018. Wide-field imaging of single nanoparticle extinction with sub-nm2 sensitivity. Physical Review Applied 9 , 034006. 10.1103/PhysRevApplied.9.034006

[thumbnail of HighSens.pdf]
Preview
PDF - Accepted Post-Print Version
Download (2MB) | Preview

Abstract

We report a highly sensitive wide-�eld imaging technique for quantitative measurement of the optical extinction cross-section �ext of single nanoparticles. The technique is simple and high-speed, and enables simultaneous acquisition of hundreds of nanoparticles for statistical analysis. Using rapid referencing, fast acquisition, and a deconvolution analysis, a shot-noise limited sensitivity down to 0.4nm2 is achieved. Measurements on a set of individual gold nanoparticles of 5nm diameter using this method yield �ext = (10:0 � 3:1)nm2, consistent with theoretical expectations, and well above the background uctuations of 0.9nm2.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Physics and Astronomy
Publisher: American Physical Society
ISSN: 2331-7019
Date of First Compliant Deposit: 8 January 2018
Date of Acceptance: 29 December 2017
Last Modified: 06 Nov 2023 18:31
URI: https://orca.cardiff.ac.uk/id/eprint/107960

Citation Data

Cited 6 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics