Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Rapid evaporation at the superheat limit of methanol, ethanol, butanol and n-heptane on platinum films supported by low-stress SiN membranes

Published

Author(s)

Eric J. Ching, C. T. Avedisian, Richard E. Cavicchi, Do H. Chung, Jeff Rah, Michael J. Carrier

Abstract

The bubble nucleation temperatures of several organic liquids (methanol, ethanol, butanol,n-heptane) on stress-minimized platinum (Pt) films supported by SiN membranes is examined by pulse-heating the membranes for times ranging from 1 υs to 10 υs. The results show that the nucleation temperatures increase as the heating rates of the Pt films increase. Measured nucleation temperatures approach predicted superheat limits for the smallest pulse times which correspond to heating rates over 108 K/s, while nucleation temperatures are significantly lower for the longest pulse times. The microheater membranes were found to be robust for millions of pulse cycles, which suggests their potential in applications for moving fluids on the microscale and for more fundamental studies of phase transitions of metastable liquids.
Citation
International Journal of Heat and Mass Transfer
Volume
101

Keywords

Homogeneous nucleation, Boiling, Superheat limit, Bubble nucleation, Bubbles, Pulse heating

Citation

Ching, E. , Avedisian, C. , Cavicchi, R. , Chung, D. , Rah, J. and Carrier, M. (2016), Rapid evaporation at the superheat limit of methanol, ethanol, butanol and n-heptane on platinum films supported by low-stress SiN membranes, International Journal of Heat and Mass Transfer, [online], https://doi.org/10.1016/j.ijheatmasstransfer.2016.04.008 (Accessed July 30, 2021)
Created June 7, 2016, Updated November 10, 2018