Articles tagged with Applied Physics
Researchers create a sodium cathode material inspired by mammal bones, featuring a porous system with a dense shell of reduced graphene oxide. The design enhances stability and allows for ultrahigh rate charging and long cycle life.
Researchers have developed microfiber- and nanofiber-based wearables that can track vital signs like blood pressure and cholesterol levels. These technologies could lead to non-invasive health monitoring for chronic illnesses.
Researchers used computer simulations to study the interaction between plasma jets and biological tissue. They found that biomaterial-like surfaces can lead to multiple reflections of the plasma jet, increasing the number of electrons and radicals, which play a role in wound healing, antimicrobial drugs, and cancer therapy.
Researchers used conductive fillers like single-walled carbon nanotubes to improve battery performance. The study found that combining NCM electrodes with as little as 0.16% by weight of SWCNT produced good electrical conductivity.
Researchers have developed core-sheath polymer fibers that combine strength with bioactivity, enabling various biomedical applications. The fibers can be tailored to specific needs by carefully selecting inner and outer layer materials, and can even include antiviral agents or drugs.
The American Physical Society has selected five researchers affiliated with Jefferson Lab as its 2020 Fellows. The winners include two staff scientists and three others who have conducted or collaborated on research at the lab. Their work has furthered our understanding of the subatomic world.
Researchers at Technische Universitßt Dresden have successfully developed printable organic transistors with high switching frequencies and adjustable threshold voltages. These breakthrough devices can be used to create complex logic circuits and enable flexible electronic applications such as RFID and high-resolution displays
Scientists have developed peptide-based nanotubes that can be used to create efficient energy harvesting systems. By controlling the alignment of the tubes and incorporating graphene oxide, they improved conductivity and increased current output.
Scientists have developed a paper-based mechanical memory board by folding paper using the Kresling pattern, generating a switch that can be controlled using vibrations. By placing multiple switches on a single platform, researchers created a functioning mechanical memory board with wide applicability for future device development.
A new atomtronic device is being developed to test the boundary between the quantum and classical worlds. The device uses neutral atoms instead of charged electrons to create a superconducting quantum interference device (SQUID), which can detect mechanical rotation with high sensitivity.
Researchers have developed an algorithm that combines gradient methods with fast Fourier transforms to quantify the organization of cardiac myofibrils in heart cells, providing a better understanding of heart cell defects. The technique has potential applications in advanced drug screens and cell-based therapies.
The new method transforms electrospun nanofibers into complex 3D shapes with controlled pore sizes, allowing cells to seed and penetrate, and exhibits superelasticity and shape recovery. The technique has significant potential for applications in tissue engineering, regenerative medicine, and tissue modeling.
The study highlights the potential of wide bandgap semiconductor devices built with silicon carbide to achieve faster switching speeds, lower losses, and higher blocking voltages. This technology has the potential to significantly reduce carbon dioxide emissions and promote a more sustainable green economy.
Researchers have developed organic memristors that could enable ultralow energy computing and brain-inspired electronics. The new generation of organic memristors is made from metal azo complex devices and has shown stability and reproducibility.
Using technology that allows high-frequency signals to travel on regular phone lines, researchers successfully transmitted data at rates of terabits per second through a pair of copper wires. The discovery could enable faster data transfer in applications such as chip-to-chip communication and data center networks.
Researchers developed a recipe for creating ideal hybrid memristive-CMOS neuromorphic computing systems, exploiting the advantages of low-precision, noisy, and variable neurons. This work aims to enable compact and efficient real-time processing for applications such as bio-signal processing and brain-machine interfaces.
Researchers developed a highly sensitive sensor, the ultrathin crack-based strain sensor (UCSS), which can detect small movements. The UCSS is inspired by a spider's slit organ and has remarkable sensitivity to movement, allowing it to monitor tiny pulse movements and detect subtle changes in temperature.
Researchers propose hybrid architectures to advance brain-inspired neuromorphic computing, focusing on operational functions needed to process information efficiently. The future of computing will not be about scaling components, but rethinking processor architecture to emulate brain efficiency.
Researchers have developed a robotic gripping mechanism inspired by the sea anemone's ability to catch prey. The device can grasp various objects of different sizes, shapes, and materials using its thermoplastic rubber skin.
Researchers used a thrip's wing and microcantilever to study the drag force on an actual insect's wing under constant airflow. The study found that the natural bristled design could increase sensitivity in tiny flying or swimming robots.
Researchers successfully produce pure polynitrogen by zapping sodium azide with a jet of plasma in liquid nitrogen, opening a new avenue for stable production. The substance is stable at atmospheric pressure and temperatures up to -50 Celsius.
Scientists fabricate multilayer blood vessels with unique biomolecules that transform into functional blood vessels when implanted. The result is a fully functional blood vessel with enhanced strength and anti-thrombosis functions.
Researchers developed a reconfigurable electronic platform that can morph into three different shapes, including quatrefoils, stars, and irregular ones. This innovation opens doors to new engineering challenges and opportunities for biomedical technologies such as drug delivery, health monitoring, and implants.
Researchers have developed a way to remove ice and frost from surfaces efficiently using less than 1% of the energy needed for traditional methods. The technique works by melting the interfacial layer directly, allowing the ice to slide off the surface.
Advances in wind technology have led to significant growth, with larger turbines now capable of generating up to 5 megawatts. Improved efficiency and cost reductions are expected, but maintaining these turbines will require more economical methods.
Researchers developed an energy harvester attached to the wearer's knee that generates 1.6 microwatts of power while walking without increased effort. The device captures biomechanical energy through natural human motion, offering a potential solution for self-powered wearable devices.
Scientists are using the laws of physics and predictive computer modeling to improve bioprinting techniques, which can create living tissues like muscle and bone. The new approaches aim to overcome trial-and-error methods and achieve more controlled printing processes.
The Johns Hopkins researchers advocate for a 'digital health scorecard' to provide objective validation and ratings for health technology solutions. They aim to address the lack of rigor in evaluating health care technology, which often prioritizes speed over safety and clinical effectiveness.
Negative capacitance field-effect transistors (NC-FETs) have been proposed as a way to make traditional transistors more efficient by adding a thin layer of ferroelectric material. The technology has the potential to transform the semiconductor industry and enable chips that compute far more while requiring less frequent charging.
The new report by the American Physical Society reveals that industrial physics plays a crucial role in driving the US economy. It contributed an estimated $2.3 trillion to the country's GDP in 2016, accounting for 12.6% of the total gross domestic product.
A new multilayer structure with an enhanced magnetoresistance ratio enables the creation of highly sensitive magnetic field sensors. This breakthrough could measure brain activity at room temperature with millisecond resolution.
Researchers demonstrate a new type of compound synapse that can achieve synaptic weight programming and conduct vector-matrix multiplication, achieving accuracies up to five times those of conventional devices. The development uses atomically thin boron nitride memristors running in parallel for energy-efficient performance.
Researchers developed a device that utilizes nonlinear dynamics of a microscopic silicon beam to enable microelectromechanical neural networks, achieving high-dimensional calculations. The system demonstrated accuracy in tasks such as classifying spoken sounds and processing binary patterns.
A physics model applied to a 'Super Court' of Supreme Justices found that consensus dominates the court's decisions, with strong correlations in voting persisting beyond individual justices' tenures. The study reveals that partisan issues are more complex than simple intuition suggests, and votes against prevailing opinions are probable.
Researchers at IBM developed a new computer architecture with co-located memory and processing, significantly outperforming conventional computers. This brain-inspired design achieved 200 times faster performance in machine learning tasks.
Researchers have developed a novel method to assess the quality of iron oxide samples, enabling them to understand their effects on patient safety. By combining gamma ray spectroscopy with 'center of gravity' analysis, scientists can quantify diffusive oxidation processes and track changes over time.
A team of researchers has successfully detected hydrogen using the Extraordinary Hall Effect in cobalt-palladium thin films. The technique demonstrates high sensitivity and could be used to detect leaks in hydrogen-powered vehicles and fueling stations, enhancing gas detection for a clean energy source.
A team in Japan developed a new technique to detect and analyze biomolecules with inhomogeneous charge distributions by adjusting the solution. They achieved improved sensor response, allowing researchers to determine the Debye length and map out a molecule's uneven charge distributions.
Researchers developed a new modeling technique to simulate metallic glass behavior under stress, predicting the amount of energy released when fractured. This breakthrough improves computer-aided materials design, helping researchers determine the properties of metallic glasses.
Researchers are studying how material-water interfaces impact water quality sensors, filtration membranes, and pipes. New sorbents with high reusability and specificity are being designed to address global clean water accessibility challenges.
Researchers at University of Innsbruck investigate proton exchange reaction using laser-induced vibration excitation. They find that the laser does not enhance the reaction, but rather amplifies a competing reaction process, highlighting the importance of controlling molecular interactions in chemical reactions.
Scientists led by Roland Wester have confirmed the presence of molecules in space using terahertz spectroscopy, a method that allows for accurate measurement of spectral lines. The study's findings provide new insights into the chemical composition of interstellar medium and may aid in detecting unknown species in space.
Researchers created a unified Time-Temperature-Architecture Diagram to guide the fabrication of heterostructures with favorable electronic properties. The blueprint enables the generation of numerous nanostructures with physical properties of interest, paving the way for advancements in computing power and transistors.
Beta peptides can self-assemble into robust biomaterials when placed inside other organic molecules. A new study has expanded their capabilities, allowing bioengineers to create more flexible materials for tissue engineering and biomedicine.
Researchers have designed a magnetoelectric device that uses chromia to store information without requiring an externally applied magnetic field. This could lead to more energy-efficient and compact memory devices.
Researchers have created a wide-bandgap semiconductor called gallium oxide (Ga2O3) that can be engineered into nanometer-scale structures to facilitate high-speed electronics. The new material has demonstrated record mobilities and quantum transport properties.
Researchers developed a machine-learning algorithm that identifies relevant degrees of freedom in physical systems, revolutionizing the field. The approach provides fundamental physical insight and raises the prospect of combining human creativity with machine learning.
Japanese researchers have optimized laboratory-grown diamond structures to detect magnetic fields, enabling new biosensing applications. The design uses nitrogen-vacancy centers with stable negative charge states, reducing noise and increasing detection accuracy.
Researchers developed a stable mechanical setup to measure electrical current across individual molecules on a noble metal surface. The study provides fresh ideas for electronic devices and opens opportunities for new studies on nanocontacts, dynamics, and transport of molecules at room temperature.
Researchers have created a stable thin film made from iron, cobalt, and manganese that boasts an average atomic moment potentially 50% greater than the Slater-Pauling limit. The new alloy features a magnetization density of 3.25 Bohr magnetons per atom, besting the previously considered maximum of 2.45.
Researchers propose using gallium oxide for producing microelectronics due to its large bandgap and high-breakdown-voltage capabilities. This enables the design of FETs with smaller geometries and improved energy density.
Researchers have created a graphene-based radiation detector with a fast response time and the ability to work over a wide range of temperatures. The device exploits graphene's thermoelectric properties, generating an electric field that provides a direct measurement of radiation.
The study reveals that when a crystal is broken along certain directions, atoms reorganize into labyrinthine structures. These structures have potential applications in hydrogen production and chemical reactions, enabling the splitting of water to produce hydrogen.
Researchers have developed a surface acoustic wave (SAW) device that can achieve frequencies six times higher than most current devices, thanks to the use of embedded interdigital transducers (IDTs). The device also boosts output power by 10 percent compared to conventional devices.
A research team from Kiel University has successfully placed a new class of spin-crossover molecules onto a surface and improved their storage capacity. The result could theoretically increase the storage density of conventional hard drives by more than one hundred fold, enabling data carriers to be made significantly smaller.
Engineers at Tohoku University created a system to measure the van der Waals' bonding force between crystal layers, increasing its strength seven times. This breakthrough enables more durable gallium selenide crystals for advanced technologies.
Researchers have created a proof of concept for MOSFETs using the deep depletion regime in bulk-boron-doped diamond, increasing hole channel carrier mobility by an order of magnitude. This enables more efficient power electronics and paves the way for fully exploiting diamond's potential in MOSFET applications.
Researchers at Pennsylvania State University have developed a novel technique for connecting piezoelectric thin films to flexible polymer substrates, reducing substrate clamping and improving material properties. The new method enables the creation of miniaturized piezoelectric devices with enhanced performance and flexibility.
A new origami lattice prototype can potentially reduce acoustic noise on roadways by selectively dampening noise at various frequencies. The technique allows researchers to adjust the distance between noise-diffusing elements, reducing noise levels by up to 90%.
Researchers have developed an asymmetric sound absorber that can absorb sound energy while allowing light and air to pass through. The system uses a two-port design with a waveguide, enabling near-total absorption of sound energy from outside the room.