An international team of scientists has found the thermal conductivity of graphene changes depending on the size of the material sample, a discovery they say challenges the fundamental laws of heat conduction for extended materials. Davide Donadio, head of a research group at the Max Planck Institute for Polymer Research (MPI-P) in Germany and his colleagues from the National … [Read more...]
Solving the Thermoelectric Mystery
Thermoelectric materials—substances that exhibit the so-called thermoelectric effect, in which a temperature difference creates an electric potential or vice versa—have been known for decades and employed in applications including power generation and refrigeration. Despite their commercial use, however, scientists have remained somewhat baffled as to why some of these … [Read more...]
Waste Sulfur May Improve Thermal Imaging Lenses
The discovery of a new use for waste material left over refining fossil fuels could lead to benefits for the thermal imaging industry. A University of Arizona-led international team has found that the sulfur left over from the refining process can be transformed into inexpensive, lightweight plastic lenses for infrared detection devices. "We have for the first time a polymer … [Read more...]
Diamond-Mineral Oil Mix May Be Best Heat Transfer Nanofluid, Say Researchers
A mixture of diamond nanoparticles and mineral oil may be the most effective nanofluid for heat transfer applications, according to new research from Rice University. Thermal fluids are used in a variety of applications, from protecting machine components from the effects of wear-and-tear to power transmission systems, solar cells, nanoelectronic mechanical systems and cooling … [Read more...]
Flexible Thermoelectric Generator Could Power Wearable Devices Using Body Heat
Researchers have developed a new thermoelectric generator that could replace batteries as a more versatile power source. As interest grows in wearable electronics like Google Glass, smartwatches and fitness trackers, finding a suitable, long-lasting reliable power supply for these devices becomes an increasingly important concern for designers. Now, a team of researchers from … [Read more...]
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