New Method for Enhancing Thermal Conductivity Could Cool Computer Chips, Lasers, LED's and other Devices
The surprising discovery of a new way to tune and enhance thermal conductivity – a basic property generally considered to be fixed for a given material – gives engineers a new tool for managing thermal effects in smart phones and computers, lasers and a number of other powered devices.
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Rice Researchers Theorize Acoustic Waves May Cool Microelectronics
Acoustic waves traveling along ribbons of graphene might be just the ticket for removing heat from very tiny electronic devices.
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Nanowire Advances Promise Improved Light-Emitting Diodes and Solar-Energy Generation
A recent advance by ASU researchers in developing nanowires could lead to more efficient photovoltaic cells for generating energy from sunlight, and to better light-emitting diodes (LEDs) that could replace less energy-efficient incandescent light bulbs.
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MIT Team Coaxes Polymers To Line Up, Transforming Them Into Materials That Could Dissipate Heat
MIT team has found a way to transform the most widely used polymer, polyethylene, into a material that conducts heat just as well as most metals, yet remains an electrical insulator.
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Thermally Activated Degradation of Phosphor-Converted White LEDs
The increasing performances and long lifetime of High Brightness LEDs are still limited by the high temperatures involved. This work shows the results of several accelerated lifetime tests on 1W white LEDs. Two different tests have been carried out: a pure thermal storage at different temperatures and an electrical aging obtained by biasing the LEDs. The impact of high temperatures has been evaluated in terms of flux decay, chromatic properties modification, increase of forward voltage and ...
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For Refrigeration Problems, a Magnetically Attractive Solution, Maybe for SSL Cooling too
Electricity-guzzling cooling systems could soon be a lot smaller, quieter and more economical thanks to an exotic metal alloy discovered by an international collaboration working at the National Institute of Standards and Technology (NIST)’s Center for Neutron Research (NCNR).*
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Optek - Thermal Management - Introduction
Optek presents the research on heat management. Read more »
New technology has dramatic chip-cooling potential for future computers - a solution for LED lighting too?
Researchers have demonstrated a new technology using tiny "ionic wind engines" that might dramatically improve computer chip cooling, possibly addressing a looming threat to future advances in computers and electronics.
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New method to cool electronics, harness waste heat and sunlight
University of Utah physicists developed small devices that turn heat into sound and then into electricity. The technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling computers and radars.
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LED – Cooling and Thermal Management
As we all know, the life span of an LED depends on the semi-conductor material used as well as the current/heat relationship. The light output of the LED becomes weaker and weaker and once it reaches 50% of its initial value, the life expectancy of the LED has, by definition, been reached. A life span of a few hundred and up to 100,000 hours is possible, but only when avoiding high temperatures which drastically reduce the length of the LED’s life.
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