Thermal fingerprint of silica encapsulated phase change nanoparticles

• NCJ Number: 304229
• Journal: Nanoscale Issue: 4 Dated: 2012 Pages: 3237-3241
• Author(s): Chaoming Wang; Yan Hong; Minghui Zhang; Mainul Hossain; Yang Luo; Ming Su
• Date Published: 2012
• Length: 5 pages
• Grant Number(s): 2012-DN-BX-K821; 2012-DN-BX-K021
• Agencies: NIJ-Sponsored
• Publication Type: Research (Applied/Empirical)
• Award: Encapsulated phase change nanoparticles as thermally-readable covert taggants; Encapsulated phase change nanoparticles as thermally-readable covert taggants

Annotation

This article describes a new type of silica microspheres that contain a panel of phase change nanoparticles (Field's alloy, indium, tin or lead–tin eutectic alloy).

Abstract

The thermophysical properties of solid–liquid phase change nanoparticles, i.e., composition-dependent melting temperatures, sharp melting peaks, and large thermal scan range, enable construction of a large number of silica microspheres that have thermally distinguishable patterns of melting temperatures. (publisher abstract modified)