Showing 20 articles starting at article 461
< Previous 20 articles Next 20 articles >
Categories: Chemistry: Thermodynamics, Physics: Optics
Published Highest-resolution single-photon superconducting camera



Researchers have built a superconducting camera containing 400,000 pixels -- 400 times more than any other device of its type. Having more pixels could open up many new applications in science and biomedical research.
Published Achieving large and uniform particle sizes



Dispersions of polymer particles in a liquid phase (latexes) have many important applications in coatings technology, medical imaging, and cell biology. A team of researchers has now developed a method to produce stable polystyrene dispersions with unprecedentedly large, and uniform, particle sizes. Narrow size distributions are essential in many advanced technologies, but were previously difficult to produce photochemically.
Published Diapers can be recycled 200 times faster with light



More than 100,000 tons of diapers are disposed of annually in Germany. Vast amounts of valuable resources, such as diaper liners, end up in the trash. The liners consist of special polymers, so-called superabsorbers. Researchers have now succeeded in considerably improving their complex recycling process. They use UV radiation to degrade the chemical chains that keep the polymers together. No chemicals are needed. Recycling at room temperature is 200 times faster than conventional recycling. The recycled polymers can then be processed to new adhesives and dyes.
Published Scientists shed light on potential breakthrough biomedical molecule



Developing a new, light-activated method to produce the molecule opens doors for future biomedical applications.
Published Preventing airborne infection without impeding communication with ions and electric field



A novel device developed by researchers in a new study utilizes ions and an electric field to effectively capture infectious droplets and aerosols, while letting light and sound pass through to allow communication. The innovation is significant in the wake of the COVID-19 pandemic, since it shows promise in preventing airborne infection while facilitating communication.
Published How quantum light 'sees' quantum sound



Researchers have proposed a new way of using quantum light to 'see' quantum sound. A new paper reveals the quantum-mechanical interplay between vibrations and particles of light, known as photons, in molecules. It is hoped that the discovery may help scientists better understand the interactions between light and matter on molecular scales. And it potentially paves the way for addressing fundamental questions about the importance of quantum effects in applications ranging from new quantum technologies to biological systems.
Published Smartphone attachment could increase racial fairness in neurological screening



A new smartphone attachment could enable people to screen for a variety of neurological conditions, such as Alzheimer's disease and traumatic brain injury, at low cost -- and do so accurately regardless of their skin tone. The attachment fits over a smartphone's camera to capture clear video of pupil size changes, which can offer clues about an individual's neurological functions. The device helps the camera see the pupil easily in dark eye colors.
Published Chemists, engineers craft adjustable arrays of microscopic lenses



A team has created minuscule lenses that it can expand or contract in mere seconds -- modifying their magnification, focal length and other optical properties in the process. That on-the-fly adaptability bodes well for the design's use in micro-projection systems and even the culturing of cells, the researchers said.
Published Accelerating waves shed light on major problems in physics



Researchers at Tampere University and the University of Eastern Finland have reached a milestone in a study where they derived a new kind of wave equation, which applies for accelerating waves. The novel formalism has turned out to be an unexpectedly fertile ground for examining wave mechanics, with direct connections between accelerating waves, general theory of relativity, as well as the arrow of time.
Published Pivotal breakthrough in adapting perovskite solar cells for renewable energy



A huge step forward in the evolution of perovskite solar cells will have significant implications for renewable energy development.
Published Scientists propose super-bright light sources powered by quasiparticles



Researchers have proposed ways to use quasiparticles to create light sources as powerful as the most advanced ones in existence today, but much smaller.
Published Soft optical fibers block pain while moving and stretching with the body



New soft, implantable fibers can deliver light to major nerves through the body. They are an experimental tool for scientists to explore the causes and potential treatments for peripheral nerve disorders in animal models.
Published From square to cube: Hardware processing for AI goes 3D, boosting processing power



A breakthrough development in photonic-electronic hardware could significantly boost processing power for AI and machine learning applications. The approach uses multiple radio frequencies to encode data, enabling multiple calculations to be carried out in parallel. The method shows promise for outperforming state-of-the-art electronic processors, with further enhancements possible.
Published Milestone: Miniature particle accelerator works



Particle accelerators are crucial tools in a wide variety of areas in industry, research and the medical sector. The space these machines require ranges from a few square meters to large research centers. Using lasers to accelerate electrons within a photonic nanostructure constitutes a microscopic alternative with the potential of generating significantly lower costs and making devices considerably less bulky. Until now, no substantial energy gains were demonstrated. In other words, it has not been shown that electrons really have increased in speed significantly. Two teams of laser physicists have just succeeded in demonstrating a nanophotonic electron accelerator.
Published Superlensing without a super lens: Physicists boost microscopes beyond limits



Attempts to break the diffraction limit with 'super lenses' have all hit the hurdle of extreme visual losses. Now physicists have shown a new pathway to achieve superlensing with minimal losses, breaking through the diffraction limit by a factor of nearly four times. The key to their success was to remove the super lens altogether.
Published Physicists create new form of antenna for radio waves



Physicists have used a small glass bulb containing an atomic vapor to demonstrate a new form of antenna for radio waves. The bulb was 'wired up' with laser beams and could therefore be placed far from any receiver electronics.
Published Solar design would harness 40% of the sun's heat to produce clean hydrogen fuel



Engineers have designed a system that can efficiently produce 'solar thermochemical hydrogen.' It harnesses the sun's heat to split water and generate hydrogen -- a clean fuel that emits no greenhouse gas emissions.
Published Photonic crystals bend light as though it were under the influence of gravity



Scientists have theoretically predicted that light can be bent under pseudogravity. A recent study by researchers using photonic crystals has demonstrated this phenomenon. This breakthrough has significant implications for optics, materials science, and the development of 6G communications.
Published Simulations of 'backwards time travel' can improve scientific experiments



Physicists have shown that simulating models of hypothetical time travel can solve experimental problems that appear impossible to solve using standard physics.
Published New study unveils stretchable high-resolution user-interactive synesthesia displays for visual--acoustic encryption



A research team has succeeded in developing a cutting-edge display using transfer-printing techniques, propelling the field of multifunctional displays into new realms of possibility.