Researchers at the University of Arkansas have developed integrated circuits capable of surviving at temperatures greater than 350 degrees Celsius, or approximately 660 degrees Fahrenheit. Created using silicon carbide, a semiconducting material that is more rugged than conventional materials used in electronics, the new circuits are expected to improve the operation of analog … [Read more...]
Syringe-Packaged Greases Satisfy Electrical and Thermal Conductivity Needs
Intertronics now offers CircuitWorks’ syringe-packaged conductive greases, which provide electric and/or thermal conductivity for a range of applications. CircuitWorks’ new silicone-free heat sink grease will not harden or dry out while offering excellent thermal conductivity and dielectric properties. It is non-corrosive and exceeds ML-C-47113 for thermal conductivity, … [Read more...]
Controlling Thermal Conductivity to Improve Energy Storage
Researchers at the University of Illinois at Urbana-Champaign have experimentally shown for the first time that the thermal conductivity of lithium cobalt oxide (LixCoO2), a material used in the cathodes of lithium-ion batteries, can be reversibly electrochemically modulated over a significant range. Many technologies require control over the flow of heat through materials in … [Read more...]
Thermal Facts and Fairy Tales: Historical Suggestions for Thermal Management of Electronics
Jim Wilson, Engineering Fellow Raytheon Company I have a small book in my office labeled “Suggestions for Designers of Navy Electronic Equipment, 1970 Edition” that was given to me several years ago by the editor at microwaves101.com (which happens to be a useful website if you are interested in microwave topics). The introduction states that any or all of this information is … [Read more...]
Built-in Heat Spreading for Efficient Thermoelectric Cooling of Concentrated Heat Loads
Jeff Hershberger, Robert Smythe, Xiaoyi Gu and Richard F. Hill Laird Technologies, Inc. INTRODUCTION Thermoelectric cooling is an active thermal management technique. A thermoelectric cooler (TEC) has two circuit boards which are typically Al2O3 plates with copper circuit traces attached to them and semiconductor elements soldered between them. TECs are now available … [Read more...]
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