EXPERIMENTAL INVESTIGATION ON SILVER-GRAPHENE HYBRID NANOFLUID DROPLET EVAPORATION AND WETTING CHARACTERISTICS OF ITS NANOSTRUCTURED DROPLET RESIDUE

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Detail(s)

Original languageEnglish
Title of host publicationFluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages8
Volume4
ISBN (Print)9780791859070
Publication statusPublished - Jul 2019

Publication series

NameASME-JSME-KSME Joint Fluids Engineering Conference, AJKFluids

Conference

TitleASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJK Fluids 2019
PlaceUnited States
CitySan Francisco
Period28 July - 1 August 2019

Abstract

Droplet evaporation is a complex phase change process with a wide range of cooling applications, such as spray cooling and dropwise hotspot cooling in microelectronics, to name a few. The hybrid nanofluid droplet evaporation and its residue effects on evaporation of the subsequent hybrid nanofluid droplet is investigated in this research. Silver-graphene (Ag-GNP) hybrid nanofluid exhibiting synergistic thermal properties is investigated and prepared by dispersing silver nanoparticles along with graphene nanoplatelets in water at 0.1% volume fraction and with different mixing ratios, followed by ultrasonication. The evaporation rate and wetting characteristics of a 3 μl volume of Ag-GNP hybrid nanofluid droplet on a copper surface were studied using an optical tensiometer. Once dried, the nanoporous structure of the residue surface was examined using a scanning electron microscope, while the surface roughness was measured using an optical profiler. Experiments were continued to further investigate the evaporation rate and wetting effects of the subsequent Ag-GNP hybrid nanofluid droplet over the residue surface. The results showed improved wetting characteristics, with 88% reduction in initial static contact angle and 163-196% enhancement in evaporation rate of the subsequent Ag-GNP hybrid nanofluid droplets over the residue surfaces as compared to the copper surface.

Research Area(s)

  • Hybrid nanofluid, droplet evaporation, nanostructured surface, droplet residue

Citation Format(s)

EXPERIMENTAL INVESTIGATION ON SILVER-GRAPHENE HYBRID NANOFLUID DROPLET EVAPORATION AND WETTING CHARACTERISTICS OF ITS NANOSTRUCTURED DROPLET RESIDUE. / Siddiqui, Farooq R.; Tso, Edwin C. Y.; Fu, Sau C.; Chao, Christopher Y. H.; Qiu, Huihe.

Fluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics. Vol. 4 American Society of Mechanical Engineers (ASME), 2019. (ASME-JSME-KSME Joint Fluids Engineering Conference, AJKFluids).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)