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ScienceDaily: Matter & Energy News |
| Form fit: Device wraps around hot surfaces, turns wasted heat to electricity Posted: 21 Jan 2022 11:54 AM PST The energy systems that power our lives also produce wasted heat -- like heat that radiates off hot water pipes in buildings and exhaust pipes on vehicles. A new flexible thermoelectric generator can wrap around pipes and other hot surfaces and convert wasted heat into electricity more efficiently than previously possible, according to scientists. |
| Harnessing noise in optical computing for AI Posted: 21 Jan 2022 11:54 AM PST A research team has developed an optical computing system for AI and machine learning that not only mitigates the noise inherent to optical computing but actually uses some of it as input to help enhance the creative output of the artificial neural network within the system. |
| New efficiency record for solar cell technology Posted: 21 Jan 2022 09:48 AM PST A research team has set a new record in the power conversion efficiency of solar cells made using perovskite and organic materials. Their latest work demonstrated a power conversion efficiency of 23.6%, approaching that of conventional silicon solar cells. This technological breakthrough paves the way for flexible, light-weight, low cost and ultra-thin photovoltaic cells for wide-ranging applications. |
| Posted: 21 Jan 2022 09:48 AM PST Researchers have developed a new control approach that enables a legged robot, called ANYmal, to move quickly and robustly over difficult terrain. Thanks to machine learning, the robot can combine its visual perception of the environment with its sense of touch for the first time. |
| Posted: 21 Jan 2022 09:48 AM PST Vortex dynamics simulations reveal reconnection, an important property linked with creation of turbulence cascade, fluid mixing, and aerodynamic noise generation. Turbulent pipe flow simulated at high Reynolds number of up to 5,000. |
| New MRI expands access to life-saving imaging Posted: 20 Jan 2022 01:51 PM PST MRI is a powerful medical tool that provides detailed images of everything from bones and joints to the brain and spinal cord, but millions of patients can't benefit from the improved care it provides. Implanted devices like defibrillators and pacemakers interfere with the MRI's magnetic signal, while obese and claustrophobic patients are often unable to get into the small opening on a traditional MRI machine. |
| Quantum dots boost perovskite solar cell efficiency and scalability Posted: 20 Jan 2022 11:07 AM PST Scientists have boosted the efficiency and scalability of perovskite solar cells by replacing their electron-transport layers with a thin layer of quantum dots. |
| Towards quantum simulation of false vacuum decay Posted: 20 Jan 2022 09:53 AM PST By shaking an optical lattice potential, researchers have realized a discontinuous phase transition in a strongly correlated quantum gas, opening the door to quantum simulations of false vacuum decay in the early universe. |
| Stirring a superfluid with a laser Posted: 20 Jan 2022 07:34 AM PST Researchers used optical trapping for the first time inside an ultracold superfluid made of helium. They were able to trap and monitor nanoparticles optically at ultralow temperatures. This technique may assist in future experiments in the field of quantum hydrodynamics. |
| Novel nanoantibiotics kill bacteria without harming healthy cells Posted: 20 Jan 2022 06:12 AM PST The CDC estimates more than 2.8 million Americans experience antibiotic-resistant infections each year. To address this critical issue, researchers recently investigated whether a series of novel nanoparticles can kill some pathogens that lead to infection without affecting healthy cells. |
| Researchers use electrically responsive fluid to make eye-like adaptive lens Posted: 19 Jan 2022 12:52 PM PST Researchers have developed an adaptive liquid lens, inspired by the functionality of the human eye. Using an electronically responsive fluid called dibutyl adipate, they created a lightweight, compact lens that changes focal length when voltage is applied. It has potential applications in phone cameras, endoscopes, eyeglasses and more. |
| Nanobubbles provide pathway to build better medical devices Posted: 18 Jan 2022 07:41 AM PST Tiny gas bubbles could help reduce drag in small medical devices, university scientists have found. Drag can lead to clogging and damage biological samples, so this discovery could pave the way to more robust devices. |
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