Title

Subnanogram Mass Measurements On Plasmonic Nanoparticles For Temperature-Programmed Thermal Analysis

Keywords

Nanoparticles and nanostructures

Abstract

Ultrasensitive thermo gravimetric analysis of adsorbed organic molecules has been achieved on an ordered array of gold nanoparticles used as a novel plasmonic nanobalance. Theextinction peaksof the resonating surface plasmon of nanoparticle arrays shift upon loading molecules and return to the original position after a linear temperature rise process. A good correlation exists between the film thickness and magnitude of peak shifts. The detection range of plasmonic nanobalance derived from our results can reach a subnanogram level (1.8 pg on an active area of 100 μm2), which is much lower than those of mechanical or electronic mass-measuring devices. Such high mass sensitivity, combined with the remote detection capability and high-temperature operation of plasmonic sensors, allows the in situ detections of the masses of loaded material and thermally desorbed molecules. © 2009 American Chemical Society.

Publication Date

1-1-2010

Publication Title

Journal of Physical Chemistry Letters

Volume

1

Issue

1

Number of Pages

79-84

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jz900014q

Socpus ID

77149138872 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77149138872

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