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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

Biothermics; Cancer; Molecular Biophysics; Nanobiotechnology; Nanoparticles; Patient Diagnosis; Phase Change Materials; Silicon; Compounds; Tumours; Gold Nanoparticles; Energy Storage; Dna; Nanocrystals; Proteins; Probes; Physics; Applied

Abstract

We describe a multiplexed highly sensitive method to detect cancer biomarkers using silica encapsulated phase change nanoparticles as thermal barcodes. During phase changes, nanoparticles absorb heat energy without much temperature rise and show sharp melting peaks (0.6 degrees C). A series of phase change nanoparticles of metals or alloys can be synthesized in such a way that they melt between 100 and 700 degrees C, thus the multiplicity could reach 1000. The method has high sensitivity (8 nM) that can be enhanced using materials with large latent heat, nanoparticles with large diameter, or reducing the grafting density of biomolecules on nanoparticles.

Journal Title

Applied Physics Letters

Volume

95

Issue/Number

4

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000268611900068

ISSN

0003-6951

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