Quantitative studies of nanoscale heat dissipation (Joule heating) are essential for advancing nano-science and technology. Joule heating is widely expected to play a critical role in accelerating electromigration induced device failure. However, limitations in quantitatively probing temperature fields—with nanoscale resolution—have hindered elucidation of the role of Joule heating in electromi...

This study proposes a new method to locate and measure the temperature of the hot spots caused by Joule Heating by measuring the free thermal expansion in-plane strain. It is demonstrated that the hotspot caused by the Joule heating in a thin metal film/plate structure can be measured by Phase shifting Moiré interferometry with continuous wavelet transform (PSMI/CWT) at the microscopic scale. A...

A considerable fraction of the solar wind energy that crosses the magnetopause ends up in the high-latitude thermosphere-ionosphere system as a result of Joule heating, the consequences of which are very significant and global in nature. Often Joule heating calculations use hourly averages of the electric field, rather than the time-varying electric field. This leads to an underestimation of th...

Considering Joule heating caused by the dissipation of the magnetic field in the neutron star crust to be an efficient mechanism in maintaining a relatively high surface temperature in very old neutron stars, the role of general relativity is investigated. It is found that, although the effect of space-time curvature produced by the intense gravitational field of the star slows down the decay r...

We use a Thermoreflectance Thermal Imaging technique to study the transient cooling of SiGe-based microrefrigerators. Thermal imaging with submicron spatial resolution, 0.1C temperature resolution and 100 nanosecond temporal resolution is achieved. Transient temperature profiles of SiGe-based superlattice microrefrigerator devices of different sizes are obtained. The dynamic behavior of these m...

Thermal performance of magnetically driven Casson nanofluid over a nonlinear stretching sheet under the influence entropy, activation energy and convective boundary conditions was analyzed numerically, employing quasi-linearization method (QLM). The collective behavior thermophoretic diffusion Brownian motion along with special effects viscous dissipation, thermal radiation, heat generation jou...

In automotive fluids, hydraulic, gear, and bearing oils, as well in applications operating extremely high or cold temperatures, PAO is widely employed. present work, we have made an attempt to develop a mathematical model discuss the flow of magnetized [Formula: see text] nanolubricant over inclined rotating disk Darcy-Forchheimer porous medium with Thompson Troian slip at boundary. The effects...

We present a novel thermoreflectance technique to visualise quasi-static Peltier and Joule thermal distributions simultaneously, enabling side-by-side comparison in situ. The main principle is an extension of so called ’-bucket’ imaging techniques well documented in the literature. The method is particularly advantageous in improving both the reliability and turnaround time for the characteris...

change memory devices Kyle L. Grosse, Feng Xiong, Sungduk Hong, William P. King, and Eric Pop Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA Micro and Nanotechnology Lab, University of Illinois at Urbana-Champaign, Illinois 61801, USA Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, ...