eprintid: 10314
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/03/14
datestamp: 2023-11-09 16:36:56
lastmod: 2023-11-09 16:36:56
status_changed: 2023-11-09 16:31:07
type: conference_item
metadata_visibility: show
creators_name: Zaid, H.M.
creators_name: Adil, M.
creators_name: Lee, K.C.
creators_name: Latiff, N.R.A.
title: Influence of Frequency-Dependent Dielectric Loss on Electrorheology of Surface Modified ZnO Nanofluids
ispublished: pub
keywords: Chains; Dielectric devices; Dielectric losses; Electric fields; Electric losses; Electrorheological fluids; Enhanced recovery; II-VI semiconductors; Nanoparticles; Nanostructured materials; Non Newtonian flow; Non Newtonian liquids; Particle size; Rheology; Viscosity; Zinc oxide; ZnO nanoparticles, Electro-rheological; Electrorheological effect; Enhanced oil recovery; Frequency dependent; Nanoparticle (NPs); Non-Newtonian fluids; Relative viscosity; Shear-dependent viscosity, Nanofluidics
note: cited By 4; Conference of 2017 International Conference on Nanomaterials and Biomaterials, ICNB 2017 ; Conference Date: 11 December 2017 Through 13 December 2017; Conference Code:136854
abstract: The shear dependent viscosity change in dielectric nanofluids under the applied electric field, provide potentials for prospect applications especially in enhanced oil recovery. When nanofluids are activated by an applied electric field, it behaves as a non-Newtonian fluid under electrorheological effect (ER) by creating the chains of nanoparticles. In this research, the effect of dielectric loss on the electrorheological characteristic of dielectric nanofluids (NFs) was studied, corresponding to the applied frequency of 167 and 18.8 MHz. For this purpose, electrorheological characteristics of ZnO (55.7 and 117.1 nm) nanofluids with various nanoparticles (NPs) concentration (0.1, 0.05, 0.01 wt. ) were measured. The measurement was done via solenoid based EM transmitter under salt water as a propagation medium. The result shows that the applied electric field caused an apparent increase on the relative viscosity of ZnO NFs due to electrorheological effect. However, the relative viscosity shows a higher increment at 167 MHz due to the greater dielectric loss, compared to 18.8 MHz. The high dielectric loss allows the dipole moments to rotationally polarize at the interfaces of nanoparticles, which create stronger chains that align with the applied electric field. Additionally, the relative viscosity demonstrated an increment with the increase in particle size of ZnO nanoparticles from 55.7 to 117.1 nm. While the viscosity of nanofluid also indicated the high dependence on particle loading. © Published under licence by IOP Publishing Ltd.
date: 2018
publisher: Institute of Physics Publishing
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050684692&doi=10.1088%2f1757-899X%2f350%2f1%2f012014&partnerID=40&md5=055e02a2b0fa802c48fd635f8e3c0af9
id_number: 10.1088/1757-899X/350/1/012014
full_text_status: none
publication: IOP Conference Series: Materials Science and Engineering
volume: 350
number: 1
refereed: TRUE
issn: 17578981
citation:   Zaid, H.M. and Adil, M. and Lee, K.C. and Latiff, N.R.A.  (2018) Influence of Frequency-Dependent Dielectric Loss on Electrorheology of Surface Modified ZnO Nanofluids.  In: UNSPECIFIED.