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Jul 17, 2024

Quantum microscopy study makes electrons visible in slow motion

Posted by in category: quantum physics

Physicists at the University of Stuttgart under the leadership of Prof. Sebastian Loth are developing quantum microscopy which enables them for the first time to record the movement of electrons at the atomic level with both extremely high spatial and temporal resolution.

Jul 17, 2024

First health care device powered by body heat made possible by liquid based metals

Posted by in categories: bioengineering, energy, health, wearables

In the age of technology everywhere, we are all too familiar with the inconvenience of a dead battery. But for those relying on a wearable health care device to monitor glucose, reduce tremors, or even track heart function, taking time to recharge can pose a big risk.

For the first time, researchers in Carnegie Mellon University’s Department of Mechanical Engineering have shown that a health care device can be powered using alone. By combining a pulse oximetry sensor with a flexible, stretchable, wearable thermoelectric energy generator composed of , semiconductors, and 3D printed rubber, the team has introduced a promising way to address battery life concerns.

“This is the first step towards battery-free wearable electronics,” said Mason Zadan, Ph.D. candidate and first author of the research published in Advanced Functional Materials.

Jul 17, 2024

Unlocking the Secrets of LUCA, Earth’s Earliest Life Form

Posted by in categories: biotech/medical, genetics

A University of Bristol-led study found that life on Earth, stemming from a common ancestor called LUCA, flourished soon after the planet’s formation.

Through genetic analysis and evolutionary modeling, researchers pinpointed LUCA’s existence to about 4.2 billion years ago, revealing it as a complex organism with an early immune system integral to Earth’s earliest ecosystems.

Luca’s genetic blueprint and its descendants.

Jul 17, 2024

Revolutionizing H2O2 Production: Ultrathin Nanosheets Show Immense Promise

Posted by in categories: chemistry, energy

Recent research has demonstrated the effectiveness of ultrathin Bi4O5Br2 nanosheets with controlled oxygen vacancies in enhancing the piezocatalytic production of hydrogen peroxide (H2O2), presenting a viable, environmentally friendly alternative to traditional methods.

Hydrogen peroxide (H2O2) serves as a crucial chemical raw material with extensive applications in numerous industrial and everyday contexts. However, the industrial anthraquinone method of producing H2O2 is fraught with significant drawbacks, including high levels of pollution and energy consumption. An alternative approach involves harnessing ubiquitous mechanical energy for piezocatalytic H2O2 evolution, which offers a promising strategy. Despite its potential, this method faces challenges due to its unsatisfactory energy conversion efficiency.

Bi4O5Br2 is regarded as a highly attractive photocatalytic material due to its unique sandwich structure, excellent chemical stability, good visible light capture ability, and suitable band structure. Aspired by its non-centrosymmetric crystal structure, piezoelectric performance has begun to enter the vision of researchers recently. However, its potential as an efficient piezocatalyst is far from being exploited, especially since the impacts of defects on piezocatalysis and piezocatalytic H2O2 production over Bi4O5Br2 remains scanty. Thus, mechanical energy-driven piezocatalysis provides a promising method for H2O2 synthesis from pure water with great attraction.

Jul 17, 2024

Students Revolutionize Army Vehicle Camouflage With Ingenious Invention

Posted by in categories: engineering, military

University of Florida senior engineering students, collaborating with peers and the U.S. Army, developed a vehicle camouflage deployment device that enhances battlefield safety and efficiency. The project, which spanned three semesters and involved input from soldiers, resulted in a device that significantly speeds up the camouflage process, uses existing materials more effectively, and adapts to various ground conditions.

University of Florida and Georgia Tech engineering students developed a vehicle camouflage system for the U.S. Army, enhancing camouflage speed and safety, and demonstrating the potential of academic-military collaboration to solve practical defense challenges.

What began as a class project for senior engineering students at the University of Florida evolved into a practical solution for soldiers, providing them with a quicker, easier, and safer method to camouflage their vehicles on the battlefield.

Jul 17, 2024

Omega Centauri: A Galaxy Core Frozen in Time Reveals Its Black Hole

Posted by in categories: cosmology, evolution

Researchers have confirmed the presence of an intermediate-mass black hole in the core of Omega Centauri, a cluster that once formed the heart of a separate galaxy. This finding enhances our understanding of black hole evolution and galaxy dynamics. (Artist’s concept.) Credit:

Researchers confirmed an intermediate-mass black hole in Omega Centauri’s center, supporting theories of its origin as a distinct galaxy core merged with the Milky Way.

Continue reading “Omega Centauri: A Galaxy Core Frozen in Time Reveals Its Black Hole” »

Jul 17, 2024

Silicon Transformed: A Breakthrough in Laser Nanofabrication

Posted by in categories: innovation, nanotechnology

A new method enables precise nanofabrication inside silicon using spatial light modulation and laser pulses, creating advanced nanostructures for potential use in electronics and photonics.

Silicon, the cornerstone of modern electronics, photovoltaics, and photonics, has traditionally been limited to surface-level nanofabrication due to the challenges posed by existing lithographic techniques. Available methods either fail to penetrate the wafer surface without causing alterations or are limited by the micron-scale resolution of laser lithography within Si.

In the spirit of Richard Feynman’s famous dictum, ‘There’s plenty of room at the bottom’, this breakthrough aligns with the vision of exploring and manipulating matter at the nanoscale. The innovative technique developed by the Bilkent team surpasses current limitations, enabling controlled fabrication of nanostructures buried deep inside silicon wafers with unprecedented control.

Jul 17, 2024

Unconventional Superconductivity: The Peculiar Case of Griffith Singularity

Posted by in categories: quantum physics, singularity

A new paper explores the quantum Griffith singularity in phase transitions, focusing on recent studies that could expand our understanding of high-temperature superconductivity in unconventional materials.

Exploring exotic quantum phase transitions has long been a key focus in condensed matter physics. A critical phenomenon in a phase transition is determined entirely by its universality class, which is governed by spatial and/or order parameters and remains independent of microscopic details. Quantum phase transitions, a subset of phase transitions, occur due to quantum fluctuations and are tuned by specific system parameters at the zero-temperature limit.

The superconductor-insulator/metal phase transition is a classic example of quantum phase transition, which has been intensely studied for more than 40 years. Disorder is considered one of the most important influencing factors, and therefore has received widespread attention. During the phase transitions, the system usually satisfies scaling invariance, so the universality class will be characterized by a single critical exponent. In contrast, the peculiarity of quantum Griffith singularity is that it breaks the traditional scaling invariance, where exotic physics emerges.

Jul 17, 2024

First-of-Its-Kind Discovery: Early Macular Degeneration Signs Can Predict Vision Loss

Posted by in categories: biotech/medical, life extension

New findings from the University Hospital Bonn (UKB), in collaboration with the University of Bonn, have revealed that specific early alterations in patients with age-related macular degeneration (AMD) can result in noticeable local vision loss. This breakthrough could enhance the treatment and monitoring of this eye condition in elderly patients, which typically progresses to central blindness, and facilitate the testing of new treatments.

AMD mainly affects elderly people. If left untreated, the disease leads to a progressive loss of central vision, which significantly impairs everyday activities such as reading or driving. Researchers around the world are intensively searching for ways to improve the early detection and treatment of this disease before major losses occur.

A research team from the UKB Eye Clinic, in cooperation with the University of Bonn and in close collaboration with basic and clinical scientists, has specifically examined patients with early forms of AMD. The researchers focused on the so-called iRORA lesions, which are very early anatomical signs of retinal damage.

Jul 17, 2024

Electric Insights: Introducing the Grid Event Signature Library

Posted by in category: robotics/AI

The Grid Signature Event Library energizes utility and researcher understanding of grid behavior by providing access to datasets of waveforms from grid operations. Credit: Adam Malin/ORNL, U.S. Dept. of Energy.

The Grid Event Signature Library at Oak Ridge National Laboratory offers waveform datasets that help analyze and predict electric grid behaviors. With contributions from various utilities, the library facilitates machine learning models to forecast and mitigate grid malfunctions, enhancing grid reliability and safety.

Researchers at Oak Ridge National Laboratory have opened a new virtual library where visitors can check out waveforms instead of books.

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