Thermal transport between CTAB passivated gold nanorods and solvent is studied by an optical pumpprobe technique. Increasing the free CTAB concentration from 1 mM to 10 mM causes a ∼3 × increase in the CTAB layer's effective thermal interface conductance and a corresponding shift in the longitudinal surface plasmon resonance. The transition occurs near the CTAB critical micelle concentration, revealing the importance of the role of free ligand on thermal transport. © 2008 American Chemical Society.

Sarit Kumar Das

Department of Mechanical Engineering

Aaron J. Schmidt

Joshua D. Alper†

Matteo Chiesa

Gang Chen

Kimberly Hamad-Schifferli

gold nanorod

GOLD NANORODS

MICELLE CONCENTRATIONS

Optical-

THERMAL TRANSPORT

Absorption

Colloids

Concentration (process)

Critical micelle concentration

Gold

Ligands

Micelles

nanorods

Nanostructures

Solvents

Surface plasmon resonance

Plasmons

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Journal of Physical Chemistry C

Knowledge of thermal history and/or distribution in biological tissues during laser based hyperthermia is essential to achieve necrosis of tumour/carcinoma cells. A semi–analytical model to predict sub–surface thermal distribution in translucent, soft, tissue mimics has been proposed. The model can accurately predict the spatio–temporal temperature variations along depth and the anomalous thermal behaviour in such media, viz. occurrence of sub-surface temperature peaks. Based on optical and thermal properties, the augmented temperature and shift of the peak positions in case of gold nanostructure mediated tissue phantom hyperthermia can be predicted. Employing inverse approach, the absorption coefficient of nano-graphene infused tissue mimics is determined from the peak temperature and found to provide appreciably accurate predictions along depth. Furthermore, a simplistic, dimensionally consistent correlation to theoretically determine the position of the peak in such media is proposed and found to be consistent with experiments and computations. The model shows promise in predicting thermal distribution induced by lasers in tissues and deduction of therapeutic hyperthermia parameters, thereby assisting clinical procedures by providing a priori estimates. © 2016 Elsevier Ltd

Journal of Thermal Biology

Analytical prediction of sub–surface thermal history in translucent tissue phantoms during plasmonic photo–thermotherapy (PPTT)

Introduction to nanofluids--their properties, synthesis, characterization, and applications Nanofluids are attracting a great deal of interest with their enormous potential to provide enhanced performance properties, particularly with respect to heat transfer. In response, this text takes you on a complete journey into the science and technology of nanofluids. The authors cover both the chemical and physical methods for synthesizing nanofluids, explaining the techniques for creating a stable suspension of nanoparticles. You get an overview of the existing models and experimental techniques used in studying nanofluids, alongside discussions of the challenges and problems associated with some of these models. Next, the authors set forth and explain the heat transfer applications of nanofluids, including microelectronics, fuel cells, and hybrid-powered engines. You also get an introduction to possible future applications in large-scale cooling and biomedicine. This book is the work of leading pioneers in the field, one of whom holds the first U.S. patent for nanofluids. They have combined their own first-hand knowledge with a thorough review of theliterature. Among the key topics are: Synthesis of nanofluids, including dispersion techniques and characterization methods Thermal conductivity and thermo-physical properties Theoretical models and experimental techniques Heat transfer applications in microelectronics, fuel cells, and vehicle engines This text is written for researchers in any branch of science and technology, without any prerequisite.It therefore includes some basic information describing conduction, convection, and boiling of nanofluids for those readers who may not have adequate background in these areas. Regardless of your background, you'll learn to develop nanofluids not only as coolants, but also for a host ofnew applications on the horizon. © 2008 John Wiley & Sons, Inc.

Nanofluids: Science and Technology

Suspended nanoparticles in conventional fluids, called nanofluids, have been the subject of intensive study worldwide since pioneering researchers recently discovered the anomalous thermal behavior of these fluids. The enhanced thermal conductivity of these fluids with small-particle concentration was surprising and could not be explained by existing theories. Micrometer-sized particle-fluid suspensions exhibit no such dramatic enhancement. This difference has led to studies of other modes of heat transfer and efforts to develop a comprehensive theory. This article presents an exhaustive review of these studies and suggests a direction for future developments. The review and suggestions could be useful because the literature in this area is spread over a wide range of disciplines, including heat transfer, material science, physics, chemical engineering and synthetic chemistry.

Heat Transfer Engineering

Heat transfer in nanofluids - A review

Review of Scientific Instruments

An optical pump-probe technique for measuring the thermal conductivity of liquids

Optics Express

Polarization microscopy with stellated gold nanoparticles for robust, in-situ monitoring of biomolecules

Nano Letters

A Golden Bullet? Selective Targeting ofToxoplasmagondiiTachyzoites Using Antibody-Functionalized Gold Nanorods

Probing the gold nanorod-ligand-solvent interface by plasmonic absorption and thermal decay

Journal	Journal of Physical Chemistry C
ISSN	19327447
Open Access	No