Low-temperature melting of silver nanoparticles in subcooled and saturated water

Soochan Lee, Patrick Phelan, Robert A. Taylor, Ravi Prasher, Lenore Dai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Continuous, laser-heated boiling experiments with silver nanofluids were conducted to identify the non-equilibrium melting behavior of silver nanoparticles in de-ionized (DI) water. Experimental results with Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS) suggest that surface melting of silver nanoparticles (which have a bulk melting point of 961°C) can occur at ambient pressure when particles are suspended in saturated, and even subcooled (e.g. < 100 °C) water due to the localized (volumetric) heat absorption. These findings are supported by calculating a temperature-dependent Hamaker constant of silver nanofluid - i.e. the interaction between interfaces (Ag-melt-water) at the melting temperature.

Original languageEnglish (US)
Title of host publicationASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume8B
DOIs
StatePublished - 2014
EventASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014 - Montreal, Canada
Duration: Nov 14 2014Nov 20 2014

Other

OtherASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014
CountryCanada
CityMontreal
Period11/14/1411/20/14

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Low-temperature melting of silver nanoparticles in subcooled and saturated water'. Together they form a unique fingerprint.

  • Cite this

    Lee, S., Phelan, P., Taylor, R. A., Prasher, R., & Dai, L. (2014). Low-temperature melting of silver nanoparticles in subcooled and saturated water. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) (Vol. 8B). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2014-36963