Research Papers

Nanoparticle-Assisted Heating Utilizing a Low-Cost White Light Source

[+] Author and Article Information
Robert A. Taylor

School of Mechanical
and Manufacturing Engineering,
University of New South Wales,
Sydney, NSW 2052, Australia
e-mail: Robert.Taylor@UNSW.edu.au

Jun Kai Wong, Sungchul Baek, Yasitha Hewakuruppu

School of Mechanical
and Manufacturing Engineering,
University of New South Wales,
Sydney, NSW 2052, Australia

Xuchuan Jiang, Chuyang Chen

School of Materials Science and Engineering,
University of New South Wales,
Sydney, NSW 2052, Australia

Andrey Gunawan

School for Engineering of Matter,
Transport and Energy,
Arizona State University,
Tempe, AZ 85287-6106

1Corresponding author.

Manuscript received December 13, 2013; final manuscript received May 2, 2014; published online May 30, 2014. Assoc. Editor: Yogesh Jaluria.

J. Nanotechnol. Eng. Med 4(4), 040903 (May 30, 2014) (6 pages) Paper No: NANO-13-1086; doi: 10.1115/1.4027643 History: Received December 13, 2013; Revised May 02, 2014

In this experimental study, a filtered white light is used to induce heating in water-based dispersions of 20 nm diameter gold nanospheres (GNSs)—enabling a low-cost form of plasmonic photothermal heating. The resulting temperature fields were measured using an infrared (IR) camera. The effect of incident radiative flux (ranging from 0.38 to 0.77 W·cm−2) and particle concentration (ranging from 0.25–1.0 × 1013 particles per mL) on the solution's temperature were investigated. The experimental results indicate that surface heat treatments via GNSs can be achieved through complementary tuning of GNS solutions and filtered light.

Copyright © 2013 by ASME
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Fig. 1

Experimental setup of: (1) PC for thermal imaging, (2) IR camera, (3) thermometer thermocouple, (4) lamp source, (5) plano-convex lens, (6) band-pass filter, (7) cuvette with testing fluids, and (8) optical power meter

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Fig. 2

Schematic of rectangular cuvette test configuration, P1 = thermocouple, h1 = 3.5 mm

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Fig. 3

GNSs used in the experiments—(a) photograph, (b) nanosight size distribution, and (c) TEM image

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Fig. 4

Schematic of the cuvette with nanofluids showing energy transfer

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Fig. 5

Absorption and scattering spectra of 20 nm GNSs

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Fig. 6

Thermal images of de-ionized water and 1.0 C GNS solution at 5, 10, 15, 20, and 25 min using 0.77 W cm−2 light irradiation

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Fig. 7

Temperature rise of a 1.0 °C GNS solution exposed to 0.38, 0.6, and 0.77 W cm−2 irradiation, as measured by the IR camera (markers), and predictions from the heat transfer model (lines)

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Fig. 8

Temperature rise of 1.0 °C, 0.5 °C, 0.25 °C, and de-ionized water exposed to an incident radiative flux of 0.6 W cm−2 measured by IR camera (markers), and predictions from heat transfer models (lines)

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Fig. 9

Maximum temperature rise—GNS solution concentration versus incident radiative flux

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Fig. 10

Maximum temperature rise at different light irradiation versus concentration of GNS solution



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