Today's Tech News: Notable or Not?

https://www.eurekalert.org/news-releases/1106053 "double-layer lens automatically adjusts beam spot size based on receiver's distance (up to 5m)/ size... adjustable reflector controlled by 2 stepping motors rotating horizontally/ vertically... retroreflective sheets placed around PV receivers' edges, reflecting IR from depth camera's projector, creating clear outline, allowing: accurate shape/ position detection, target area isolation, minimized environmental interference... sequentially targets multiple PV receivers of different sizes/ distances, switching between them rapidly"

https://www.eurekalert.org/news-releases/1093528 "circuit described using differential equations for how voltages/ currents evolve over time, taking into account real-world component characteristics... equations solved numerically, step by step, until steady-state... evaluates output voltage stability, power-delivery efficiency, total harmonic distortion, genetic algorithm then updates parameters, process repeated until optimum... <5% output voltage fluctuation (was 18%) when load changes... 86.7% power-delivery efficiency at 6.78 MHz, > 23 W output power"

https://phys.org/news/2023-08-antiferromagnets-memory.html "more energy efficient than ones made of silicon, not subject to size and speed constraints... passed current through 5° Kelvin manganese bismuth telluride antiferromagnets, unique voltage was measured, depending on whether positive or negative determines if coded as 1 or 0... change between 1 and 0 states 100X faster... not disturbed in presence of other magnets, and more memory capacity... energy from Wi-Fi and mobile signals could cause antiferromagnets to produce electricity powering portable electronic devices"

https://www.laserfocusworld.com/lasers-sources/article/14283698/solar-pumping-converts-broadband-sunlight-into-efficient-laser-light "NOVA heliostat-parabolic mirror... large plane mirror with two flat segments mounted onto a two-axis heliostat.. 93.5% reflectivity and redirects incoming solar radiation toward stationary parabolic mirror with 1.5 m diameter, 60° rim angle, and 660 mm focal length. The parabolic mirror’s back surface silver eflectivity 80%... laser head component fused silica aspheric lens and three 2.5-mm-diameter, 25-mm-length Ce:Nd:YAG rods mounted within single conical pump cavity"

https://techxplore.com/news/2022-03-convenient-wireless-home.html "The key to the new design is a cylindrical power coil. The wire at the top of the coil is wound in the opposite direction to the wire at the bottom of the coil, with a z-shaped bridge connecting them... This results in an even magnetic field around the middle of the charging coil. Receivers placed anywhere within that area charge efficiently, regardless of their position or orientation... This was just a proof of concept... Now we can work to improve the efficiency—maybe to around 90% – and also the power" Related: Study conceptualizes energy efficient, wireless charging roads https://techxplore.com/news/2022-07-energy-efficient-wireless-roads.html Engineers use radiation suppression to develop better wireless charging https://techxplore.com/news/2023-07-suppression-wireless.html Charge Your Phone In Your Pocket Wirelessly https://www.electronicsforu.com/news/charge-your-phone-in-your-pocket-wirelessly Improvi...

https://techxplore.com/news/2022-02-power-technology-unprecedented-freedom-wireless.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter "Take kitchen appliances, for example," says Jayathurathnage. "At the moment, you need to put a rice cooker or a blender at a particular spot for it to get energy. But with our technology we can make the whole kitchen counter a source of power for appliances or even phones, but the electromagnetic field is only generated under the devices... to boost the power levels from about 1 kW to around 20 kW" Related: Successful delivery: ORNL demonstrates bi-directional wireless charging on hybrid UPS truck https://www.ornl.gov/news/successful-delivery-ornl-demonstrates-bi-directional-wireless-charging-hybrid-ups-truck You may be able to wirelessly charge your EV this year https://pv-magazine-usa.com/2022/02/23/you-may-be-able-to-wirelessly-charge-your-ev-this-year/ Ford Seeks Patent For Wireless Charging Of Electri...

https://techxplore.com/news/2021-10-wireless-based-large-area-electronics-gigahertz.html "existing LAE-based devices is that they typically achieve far lower speeds than electronics based on conventional chips... To enhance its speed, they enhanced a metric of basic transistors by over one order of magnitude and then designed circuits that exploited this metric. Finally, they employed architecture-level phase synchronization techniques that did not require components that would reduce the system's speed"

https://techxplore.com/news/2021-10-solution-light-weight-compact-wireless-devices.html "highly precise and efficient... will effectively reduce the amount of circuit components in wireless power transfer devices, as well as their cost and weight... especially beneficial for electric cars, drones and other such vehicles for which a light weight and compact size are important. Furthermore, the research results could also be applied to biomedical wireless power transfers for implantable medical devices such as pacemakers"

https://medicalxpress.com/news/2021-10-simultaneous-acoustic-energy-neuroscience-cardiovascular.html "thin, battery-free and flexible implantable system for wireless recharging and communication via ultrasound... automatically determined abnormal heartbeats and responded by simulating the heart electrically... scientists incorporated a fractal serpentine copper pattern placed on a polyimide pattern layer, where the circuit interconnected between chip components. The researchers encapsulated all the components in a soft polydimethylsiloxane (PDMS) layer" Related: Engineers 3D-print personalized, wireless wearables that never need a charge https://news.arizona.edu/story/engineers-3d-print-personalized-wireless-wearables-never-need-charge Scientists develop an energy-efficient wireless power and information transfer system https://techxplore.com/news/2023-09-scientists-energy-efficient-wireless-power.html Charge once, power long: Ultrasonic solution for implantable devices https...