Tech Xplore - electromagnetic energy

Development of a self-resonant smart energy harvester

The Internet of Things (IoT) is a network based on wireless sensor nodes that provide resources and information. For the long-lasting use of IoT devices, their batteries must be replaced, or a number of power line connections ...

Feb 20, 2023

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Additive manufacturing creates new options for high-powered RF waveguides

Researchers at the Georgia Tech Research Institute (GTRI) are using additive manufacturing techniques to create unique waveguide structures that would be difficult or impossible to make using conventional fabrication processes. ...

Feb 7, 2023

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Energy harvesting to power the Internet of Things

The wireless interconnection of everyday objects known as the Internet of Things depends on wireless sensor networks that need a low but constant supply of electrical energy. This can be provided by electromagnetic energy ...

Jun 13, 2022

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Proposed improvements to SiC MOSFET power converter technology overcome existing challenges

Transistors, which are devices that control or amplify electrical signals and power, are one of the most ubiquitous components of modern electronics. The most widely used transistor is known as the MOSFET, which stands for ...

May 13, 2022

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Wallet-sized device focuses terahertz energy to generate high-resolution images

Researchers have created a device that enables them to electronically steer and focus a beam of terahertz electromagnetic energy with extreme precision. This opens the door to high-resolution, real-time imaging devices that ...

Feb 18, 2022

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Navy ditches futuristic railgun, eyes hypersonic missiles

The U.S. Navy pulled the plug, for now, on a futuristic weapon that fires projectiles at up to seven times the speed of sound using electricity.

Jul 1, 2021

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Engineers develop inexpensive, scalable method to make metamaterials that manipulate microwave energy

Engineers at Tufts University have developed new methods to more efficiently fabricate materials that behave in unusual ways when interacting with microwave energy, with potential implications for telecommunications, GPS, ...

Jun 21, 2021

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An industrially viable competitor to silicon-based solar cells is in the works

Solar cells are excellent renewable energy tools that use sunlight to drive an electrical current for power. They've been used to power homes since the 1980s, and their performance and production cost have improved dramatically ...

Mar 29, 2021

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Researchers harvest energy from radio waves to power wearable devices

From microwave ovens to Wi-Fi connections, the radio waves that permeate the environment are not just signals of energy consumed but are also sources of energy themselves. An international team of researchers, led by Huanyu ...

Mar 25, 2021

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Leveraging the 5G network to wirelessly power IoT devices

Researchers at the Georgia Institute of Technology have uncovered an innovative way to tap into the over-capacity of 5G networks, turning them into "a wireless power grid" for powering Internet of Things (IoT) devices that ...