Plasma nanocoated carbon nanotubes for heat transfer nanofluids
Related Experiment Video
Updated: Jun 11, 2026

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
Published on: April 10, 2017
Young Jo Kim1, Hongbin Ma, Qingsong Yu
1Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA.
Abstract:
Multi-wall carbon nanotubes (CNTs) were plasma-treated using glow discharges of argon, oxygen and methane/oxygen mixtures and then dispersed into a base fluid of water. It was found that proper plasma treatments of CNTs using nanoscale plasma coatings significantly improve the dispersion and stabilize the suspension of CNTs in the base fluid. With 0.01 vol% addition of plasma-treated CNTs, a 25% initial increase in thermal conductivity was achieved and a stabilized 20% increase was observed with the resulting nanofluids after 5 days' settling. It should particularly be pointed out that such a large increase in thermal conductivity was achieved when plasma-treated CNTs were stably dispersed in water without adding any dispersing agents or surfactants. Surface modification of the CNTs was confirmed by Raman spectroscopy and ultra-thin (approximately 2 nm) plasma nanocoatings were noted on the treated CNT surfaces by transmission electron microscopy (TEM).
Related Concept Videos
Mechanisms of Heat Transfer
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.
Mechanisms of Heat Transfer II
Mechanisms of Heat Transfer I
Mechanism of heat transfer

