Wireless electricy news and discussions

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weatheriscool
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Wireless electricy news and discussions

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Researchers Just Wirelessly Transmitted Power Over 98 Feet of Thin Air
byAdmin •
September 02, 2022
https://blog.scientiststudy.com/2022/09 ... ZWjvagzEFQ
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Imagine walking into an airport or grocery store and your smartphone automatically starts charging. This could be a reality one day, thanks to a new wireless laser charging system that overcomes some of the challenges that have hindered previous attempts to develop safe and convenient on-the-go charging systems.

"The ability to power devices wirelessly could eliminate the need to carry around power cables for our phones or tablets," said research team leader Jinyong Ha from Sejong University in South Korea. "It could also power various sensors such as those in Internet of Things (IoT) devices and sensors used for monitoring processes in manufacturing plants."

In Optics Express, the researchers describe their new system, which uses infrared light to safely transfer high levels of power. Laboratory tests showed that it could transfer 400 mW light power over distances of up to 30 meters. This power is sufficient for charging sensors, and with further development, it could be increased to levels necessary to charge mobile devices.

Several techniques have been studied for long-range wireless power transfer. However, it has been difficult to safely send enough power over meter-level distances. To overcome this challenge, the researchers optimized a method called distributed laser charging, which has recently gained more attention for this application because it provides safe high-power illumination with less light loss.
weatheriscool
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Researchers develop arrays of tiny crystals that deliver efficient wireless energy
https://phys.org/news/2023-08-arrays-ti ... eless.html
by Susan Glairon, University of Colorado at Boulder

Imagine a person on the ground guiding an airborne drone that harnesses its energy from a laser beam, eliminating the need for carrying a bulky onboard battery.

That is the vision of a group of University of Colorado at Boulder scientists from the Hayward Research Group.

In a new study, the Department of Chemical and Biological Engineering researchers have developed a novel and resilient photomechanical material that can transform light energy into mechanical work without heat or electricity, offering innovative possibilities for energy-efficient, wireless and remotely controlled systems. Its wide-ranging potential spans across diverse industries, including robotics, aerospace and biomedical devices.

"We cut out the middle man, so to speak, and take light energy and turn it directly into mechanical deformation," Professor Ryan Hayward said.

Hayward and his team describe the new material in a report published July 27 in Nature Materials.
weatheriscool
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World's fastest wireless EV charger unlocks 100 kW parking spots
By Loz Blain
March 18, 2024
https://newatlas.com/automotive/100-kw- ... -charging/
A new wireless EV charging pad can fill a car's battery as efficiently as a wired plug, at groundbreaking 100 kW power levels – unlocking the possibility of fast, efficient and super-convenient charging simply by parking in a designated spot.

Wireless power transfer was famously first demonstrated in the 1890s by one Nikola Tesla. Today, it's fairly commonplace in many homes, where plenty of folk use wireless charging pads for phones, tablets and electric toothbrushes, as well as inductive cooktops. The power is transferred from the charger to the device through the interaction of electromagnetic fields, and what was once dark magic is now considered a safe, convenient and efficient way to get the job done.
weatheriscool
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No outdoor outlet? Power Mole transmits electricity through window glass
By Ben Coxworth
March 25, 2024
The Power Mole wirelessly transmits 10 watts of electricity through window glass, allowing indoor outlets to power outdoor devices. It's built on the inductive coupling technology utilized in wireless smartphone charging systems.

Currently the subject of a Kickstarter campaign, the Power Mole was created by California-based inventor Peter Bevelacqua. It's made for situations in which devices such as security cameras or decorative lights need a power source, but there are no outdoor outlets nearby.

The setup consists of two puck-shaped components: the transmitter, which is adhered to the inside surface of a window pane, and the receiver, which is adhered to the outside of the pane. The transmitter is plugged into an indoor household outlet, while the receiver is USB hard-wired to the outdoor device.
https://newatlas.com/around-the-home/po ... dow-glass/
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