News

Thermal Metamaterial for Waste-Heat Harvesting in Power Plants and Factories

The thermal metamaterial was developed in research aimed at efficiently harvesting waste heat from power plants and factories. (Purdue University/Sean Molesky) An international research team has used a thermal metamaterial to control the emission of radiation at high temperatures, an advance that could bring devices able to efficiently harvest waste heat from power plants and factories. Thermophotovoltaic devices that generate electricity from thermal radiation might be adapted to industrial pipes in factories and power plants, as well as on car engines and automotive exhaust systems, to recapture much of the wasted energy.

Posted in: News, Energy, Energy Efficiency, Energy Harvesting

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Technology Powers Implants Wirelessly Via Ultrasound

The basic structure of the ultrasound power supply and communication. (© Photo Fraunhofer IBMT) Scientists have developed a demonstrator that powers active implants wirelessly via ultrasound. Ultrasound waves have a broader range in the body, and they penetrate the implant’s metal casing more easily than electromagnetic waves. The ultrasound waves are also capable of bidirectional transfer of information, such as the temperature of the implant, or details regarding the type and intensity of electrical stimulation.

Posted in: News, Energy

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Renewable Energy Could Be Under Our Feet

Associate Professor Xudong Wang holds a prototype of the researchers’ energy harvesting technology, which uses wood pulp and harnesses nanofibers. (Photo: Stephanie Precourt) Flooring can be made from any number of sustainable materials, making it, generally, an eco-friendly feature in homes and businesses. Now, flooring could be even more “green,” thanks to an inexpensive, simple method developed by University of Wisconsin–Madison materials engineers that allows them to convert footsteps into usable electricity.

Posted in: News, Energy, Energy Harvesting, Renewable Energy

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Metamaterial Structures Shrink When Heated

While most solid materials expand with heat, a new 3D-printed structure built by Massachusetts Institute of Technology (MIT) engineers is designed to shrink. The metamaterial may enable heat-resistant circuit boards.

Posted in: News, Board-Level Electronics, Electronic Components, Materials

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Smart Threads Could Save Lives

Engineers are joining forces with designers, scientists, and doctors at Drexel University to produce new biomedical textiles, and the resulting smart clothes are not only fashionably functional but could also be life savers.

Posted in: News, Medical

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Microwaves Target Deep Tumors

Physicists at the University of Texas at Arlington have shown that using microwaves to activate photosensitive nanoparticles produces tissue-heating effects that ultimately lead to cell death within solid tumors. The new concept, which combines microwaves with photodynamic therapy, opens new avenues for targeting deeper tumors and has proven effective in rapidly and safely reducing tumor size.

Posted in: News, Medical

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Imaging Technique With Potential For Medical Diagnostics

A unique new imaging method, called polarized nuclear imaging, combines powerful aspects of both magnetic resonance imaging and gamma-ray imaging. Developed by two physicists in the University of Virginia's departments of physics and radiology, it has potential for new types of high-resolution medical diagnostics as well as industrial and physics research applications.

Posted in: News, Medical

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