Title

Stress-Sensing Nanomaterial Calibrated With Photostimulated Luminescence Emission

Keywords

Alumina nanoparticles; photostimulated luminescence; piezospectroscopy; stress-sensing

Abstract

Calibration of high spatial resolution stress-sensing alumina-epoxy nanomaterials is presented. The piezospectroscopic property of luminescent chromium-doped alumina nanoparticles embedded as "nano-sensors" in epoxy-based materials is the basis for the stress sensing capabilities. The stress-optical properties are determined as piezopectroscopic coefficients in compression experiments for nanomaterials containing varying volume fractions of alumina nanoparticles. An increasing stress-sensitivity was demonstrated with higher volume fractions. Thermal variations were shown to have negligible effects on the stress sensing property. The development of this material sensing system will enable quantitative measurement and non-invasive monitoring of stress distributions within a polymer system applied as adhesives or as coatings on a substrate under loading conditions. © 2011 American Chemical Society.

Publication Date

8-10-2011

Publication Title

Nano Letters

Volume

11

Issue

8

Number of Pages

3274-3278

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/nl201626q

Socpus ID

80051654538 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80051654538

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