...Siddharth Saurav; Sandip Mazumder The Fourier and the hyperbolic heat conduction equations were solved numerically to simulate a frequency-domain thermoreflectance (FDTR) experiment. Numerical solutions enable isolation of pump and probe laser spot size effects and use of realistic boundary...

... were run at several current values to vary the amount of energy generation. Fig. 3 Heating, delay, and image acquisition timing signals for quasi-steady lock-in thermoreflectance imaging. Low power LED illumination is constant. I A and I B refer to heated and cooled reflectance...

.... Phys. , 105 ( 2 ), p. 023710 . 10.1063/1.3068476 6 Hopkins , P. E. , 2010 , “ Influence of Electron-Boundary Scattering on Thermoreflectance Calculations After Intraband and Interband Transitions Induced by Short-Pulsed Laser Absorption ,” Phys. Rev. B , 81 ( 3 ), p. 035413 . 10.1103...

... thin films and graphite substrates. Elastic and inelastic diffusive transport models are formulated to aid in the prediction of conductance at a metal-graphite interface. The temperature dependence of the thermal conductance at Au-graphite interfaces is measured via transient thermoreflectance from 78...

...Jonathan A. Malen; Kanhayalal Baheti; Tao Tong; Yang Zhao; Janice A. Hudgings; Arun Majumdar Fiber aligned frequency domain thermoreflectance (FAFDTR) is a simple noncontact optical technique for accurately measuring the thermal conductivity of thin films and bulk samples for a wide range...

...-based thermal algorithm to solve for the temperature change and heat transfer in which a thin film subjected to a modulated heat source is sandwiched between two thermally conductive pathways. We validate our solution with time domain thermoreflectance measurements on glass slides and extend the thermal...

...Patrick E. Hopkins; Leslie M. Phinney; Justin R. Serrano In this work, we examine Fermi relaxation in 20 nm Au films with pump-probe themoreflectance using a thin film, intraband thermoreflectance model. Our results indicate that the Fermi relaxation of a perturbed electron system occurs...

...Patrick E. Hopkins; Justin R. Serrano; Leslie M. Phinney; Sean P. Kearney; Thomas W. Grasser; C. Thomas Harris Pump-probe transient thermoreflectance (TTR) techniques are powerful tools for measuring the thermophysical properties of thin films, such as thermal conductivity, Λ , or thermal boundary...

... and experiments concerning phonon scattering processes driving thermal boundary conductance ( h B D ) are reviewed. Experimental studies of thermal boundary conductance conducted with the transient thermoreflectance technique challenging specific assumptions about phonon scattering during thermal boundary...

... deposition conditions to control the growth around the Cr ∕ Si boundary. The Cr ∕ Si interfaces are characterized with Auger electron spectroscopy. The thermal boundary conductance ( h BD ) is measured with the transient thermoreflectance technique. Values of h BD are found to vary with both the thickness...

... thermal data for aligned films of single wall nanotubes. Furthermore, such data for nanotube films do not separate volume from interface thermal resistances. This paper uses a thermoreflectance technique to measure the volumetric heat capacity and thermal interface resistance and to place a lower bound...

... thermoreflectance testing at high temperatures. At high temperatures, traditional models predict the thermal boundary conductance to be relatively constant in these systems due to assumptions about phonon elastic scattering. Experiments, however, show an increase in the conductance indicating inelastic phonon...

... thermoreflectance absorption coefficients heat transfer temperature distribution picosecond photoreflectance thermal diffusivity optical absorption impulse response asymptotic behaviors The thermal characterization of thin deposits or thin films, whose thickness varies from some nanometers...

... thermoreflectance ray tracing 05 07 2005 02 08 2006 2007 American Society of Mechanical Engineers ...

...Robert J. Stevens; Andrew N. Smith; Pamela M. Norris Measurement of the thermal boundary conductance (TBC) by use of a nondestructive optical technique, transient thermoreflectance (TTR), is presented. A simple thermal model for the TTR is presented with a discussion of its applicability...

... July 23, 2001; revision received February 23, 2004. Associate Editor: D. B. R. Kenning. 23 July 2001 23 February 2004 16 06 2004 cholesteric liquid crystals infrared imaging hysteresis thermoreflectance image colour analysis temperature measurement Experimental...

... thermal conductivity thermoreflectance Computational Electronics Experimental Heat Transfer Thin Films The performance of electronic and telecommunication devices depends heavily on electro-thermal interactions, making the knowledge of material properties fundamental to the design...

... thermal microscopy (SThM) achieves lateral resolutions of 50 nm and a measurement bandwidth of 100 kHz; SThM has been used to characterize differences in energy dissipation in single-wall and multi-wall carbon nanotubes. Picosecond thermoreflectance enables ultrahigh time-resolution in thermal diffusion...

...Vladimir V. Kulish, Assistant Professor, ASME Associate Member; Jose´ L. Lage, Professor, Mem. ASME; Pavel L. Komarov, Research Fellow, Assoc. Mem. ASME; Peter E. Raad, Professor, Mem. ASME The transient thermoreflectance (TTR) method consists of measuring changes in the reflectivity of a material...

...C. H. Fan, Graduate Student Researcher, Assoc. Mem. ASME; J. P. Longtin, Assistant Professor, Mem. ASME, This work presents a noncontact laser-based thermoreflectance technique to measure changes in temperature or concentration at a liquid surface. Changes in temperature and, for multi-component...