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Categories: Engineering: Graphene, Physics: Optics
Published Nextgen computing: Hard-to-move quasiparticles glide up pyramid edges
(via sciencedaily.com) Original source A new kind of 'wire' for moving excitons could help enable a new class of devices, perhaps including room temperature quantum computers.
Published Compact accelerator technology achieves major energy milestone
(via sciencedaily.com) Original source Researchers have demonstrated a compact particle accelerator less than 20 meters long that produces an electron beam with an energy of 10 billion electron volts (10 GeV). There are only two other accelerators currently operating in the U.S. that can reach such high electron energies, but both are approximately 3 kilometers long. This type of accelerator is called a wakefield laser accelerator.
Published AI for perovskite solar cells: Key to better manufacturing
(via sciencedaily.com) Original source Tandem solar cells based on perovskite semiconductors convert sunlight to electricity more efficiently than conventional silicon solar cells. In order to make this technology ready for the market, further improvements with regard to stability and manufacturing processes are required. Researchers have succeeded in finding a way to predict the quality of the perovskite layers and consequently that of the resulting solar cells: Assisted by Machine Learning and new methods in Artificial Intelligence (AI), it is possible assess their quality from variations in light emission already in the manufacturing process.
Published Long in the Bluetooth: Scientists develop a more efficient way to transmit data between our devices
(via sciencedaily.com) Original source Researchers have developed a more energy efficient way of connecting our personal devices. New technology consumes less power than Bluetooth and can improve battery life of tech accessories, including earbuds and fitness trackers. Future applications could see us unlocking a door by touching its handle or shaking hands to exchange phone numbers.
Published A deep-sea fish inspired researchers to develop supramolecular light-driven machinery
(via sciencedaily.com) Original source Chemists have developed a bioinspired supramolecular approach to convert photo-switchable molecules from their stable state into metastable one with low-energy red light. Their work enables fast, highly selective, and efficient switching, providing new tools for energy storage, activation of drugs with light, and sensing applications.
Published Novel measurement technique for fluid mixing phenomena using selective color imaging method
(via sciencedaily.com) Original source A novel measurement technique has been developed to visualize the fluid flow and distribution within two droplets levitated and coalesced in space using fluorescence-emitting particles. This technique enabled the estimation of fluid motion within each droplet, thereby revealing the internal flow caused by surface vibration when the droplet merging promotes fluid mixing.
Published Riddle of Kondo effect solved in ultimately thin wires
(via sciencedaily.com) Original source A research team has now directly measured the so-called Kondo effect, which governs the behavior of magnetic atoms surrounded by a sea of electrons: New observations with a scanning tunneling microscope reveal the effect in one-dimensional wires floating on graphene.
Published New laser setup probes metamaterial structures with ultrafast pulses
(via sciencedaily.com) Original source A new technique offers a safe, reliable, and high-throughput way to dynamically characterize microscale metamaterials. The method could speed up the development of acoustic lenses, impact-resistant films, and other futuristic materials.
Published Tracking down quantum flickering of the vacuum
(via sciencedaily.com) Original source Absolutely empty -- that is how most of us envision the vacuum. Yet, in reality, it is filled with an energetic flickering: the quantum fluctuations. Experts are currently preparing a laser experiment intended to verify these vacuum fluctuations in a novel way, which could potentially provide clues to new laws in physics. A research team has developed a series of proposals designed to help conduct the experiment more effectively -- thus increasing the chances of success.
Published Photo-induced superconductivity on a chip
(via sciencedaily.com) Original source Researchers have shown that a previously demonstrated ability to turn on superconductivity with a laser beam can be integrated on a chip, opening up a route toward opto-electronic applications.
Published Template for success: Shaping hard carbon electrodes for next-generation batteries
(via sciencedaily.com) Original source Sodium- and potassium-ion batteries are promising next-generation alternatives to the ubiquitous lithium-ion batteries (LIBs). However, their energy density still lags behind that of LIBs. To tackle this issue, researchers explored an innovative strategy to turn hard carbon into an excellent negative electrode material. Using inorganic zinc-based compounds as a template during synthesis, they prepared nanostructured hard carbon, which exhibits excellent performance in both alternative batteries.
Published Solar-powered device produces clean water and clean fuel at the same time
(via sciencedaily.com) Original source A floating, solar-powered device that can turn contaminated water or seawater into clean hydrogen fuel and purified water, anywhere in the world, has been developed by researchers.
Published quantum mechanics: Unlocking the secrets of spin with high-harmonic probes
(via sciencedaily.com) Original source Deep within every piece of magnetic material, electrons dance to the invisible tune of quantum mechanics. Their spins, akin to tiny atomic tops, dictate the magnetic behavior of the material they inhabit. This microscopic ballet is the cornerstone of magnetic phenomena, and it's these spins that a team of researchers has learned to control with remarkable precision, potentially redefining the future of electronics and data storage.
Published Atomic dance gives rise to a magnet
(via sciencedaily.com) Original source Researchers turned a paramagnetic material into a magnet by manipulating electrons' spin via atomic motion.
Published Photonics team develops high-performance ultrafast lasers that fit on a fingertip
(via sciencedaily.com) Original source Scientists demonstrate a novel approach for creating high-performance ultrafast lasers on nanophotonic chips. The new advance will enable pocket-sized devices that can perform detailed GPS-free precision navigation, medical imaging, food safety inspection and more.
Published Chemists image basic blocks of synthetic polymers
(via sciencedaily.com) Original source Researchers have developed a new method to image polymerization catalysis reactions one monomer at a time.
Published 'Indoor solar' to power the Internet of Things
(via sciencedaily.com) Original source From Wi-Fi-connected home security systems to smart toilets, the so-called Internet of Things brings personalization and convenience to devices that help run homes. But with that comes tangled electrical cords or batteries that need to be replaced. Now, researchers have brought solar panel technology indoors to power smart devices. They show which photovoltaic (PV) systems work best under cool white LEDs, a common type of indoor lighting.
Published 'Hot' new form of microscopy examines materials using evanescent waves
(via sciencedaily.com) Original source A team of researchers has built a prototype microscope that does not rely on backscattered radiation, instead uses passive detection of thermally excited evanescent waves. They have examined dielectric materials with passive near-field spectroscopy to develop a detection model to further refine the technique, working to develop a new kind of microscopy for examining nanoscopic material surfaces.
Published Decarbonizing light-duty transportation in the United States: Study reveals strategies to achieve goal
(via sciencedaily.com) Original source Researchers found that meeting greenhouse gas emissions goals for light-duty vehicles, which are passenger vehicles such as cars and trucks, is possible, but not just by increasing electric vehicle sales.
Published Vacuum in optical cavity can change material's magnetic state without laser excitation
(via sciencedaily.com) Original source Researchers in Germany and the USA have produced the first theoretical demonstration that the magnetic state of an atomically thin material, ?-RuCl3, can be controlled solely by placing it into an optical cavity. Crucially, the cavity vacuum fluctuations alone are sufficient to change the material's magnetic order from a zigzag antiferromagnet into a ferromagnet.