Computer heat sinks, such as fin arrays and heat pipes, are much larger than silicon chips and are continuing to grow in size. This trend is driven by the increasing chip heat generation rates and has serious implications for overall system performance. The large volume of existing heat sinks causes discrete memory, video, and power-delivery components to be crowded away from … [Read more...]
There's something for everybody on talk radio
I was doing my Sunday morning (2 a.m.) radio call-in show about electronics cooling (Hot Air on the Air with Tony K), when I heard a familiar voice on the line. "Herbie in Hereford," I greeted the caller, "You're on the air with Hot Air." "First time caller, long time listener . . .," the caller said. "Wow. There must be an insomnia epidemic," I interrupted. Johnny, the … [Read more...]
Flash Diffusivity Method: A Survey of Capabilities
The development, specification, and quality control of materials used in electronics packaging and thermal management often require the measurement of thermophysical properties.This data can be critical to a successful design, especially with the rapidly increasing cooling requirements that result from the packaging of higher performance devices. A variety of methods, involving … [Read more...]
The Thermal Conductivity of Thermal Insulators
This issue, we present an overview of a number of materials that are often used as thermal insulators. The world would have been much easier for thermal engineers if only the creator had provided us with a choice of materials showing the same range in thermal conductivity values as exists for electrical conductivity. Alas, this isn't the case. Thus, not a single one of the … [Read more...]
High Resolution, Real Time Micro-thermal Imaging — Steady State and Pulse Measurements on Microscopic Semiconductor Targets
Thermal imaging of microscopic targets has evolved over the past 20 years to the point where real time "true-temperature" mapping with 50 milliKelvin sensitivity and 2.75 �m spatial resolution is possible. Recently, the capability to study and evaluate high frequency transient pulses has been added. Infrared imaging methods provide unequaled ease and flexibility for … [Read more...]
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