//www.koonmotors.com/news/matter_energy/nature_of_light/ Optics. Can light go backwards? Researchers push the limits of our understanding of light. Also see amazing new applications of light energy. Full-text, images, free. en-us Wed, 06 Sep 2023 14:51:38 EDT Wed, 06 Sep 2023 14:51:38 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/matter_energy/nature_of_light/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/09/230906112357.htm Pumping liquids may seem like a solved problem but optimizing the process is still an area of active research. Any pumping application -- from industrial scales to heating systems at home -- would benefit from a reduction in energy demands. Researchers now showed how pulsed pumping can reduce both friction from and energy consumption of pumping. For this, they took inspiration from a pumping system intimately familiar to everyone: the human heart. Wed, 06 Sep 2023 11:23:57 EDT //www.koonmotors.com/releases/2023/09/230906112357.htm //www.koonmotors.com/releases/2023/09/230905125037.htm 研究人员把可能的极限in the field of atomic-scale spin-optics, creating a spin-optical laser from monolayer-integrated spin-valley microcavities without requiring magnetic fields or cryogenic temperatures. Tue, 05 Sep 2023 12:50:37 EDT //www.koonmotors.com/releases/2023/09/230905125037.htm //www.koonmotors.com/releases/2023/09/230904104623.htm Digital information exchange can be safer, cheaper and more environmentally friendly with the help of a new type of random number generator for encryption. The researchers behind the study believe that the new technology paves the way for a new type of quantum communication. Mon, 04 Sep 2023 10:46:23 EDT //www.koonmotors.com/releases/2023/09/230904104623.htm //www.koonmotors.com/releases/2023/08/230831142825.htm Researchers have revealed an innovative approach to track individual molecule dynamics within nanofluidic structures, illuminating their response to molecules in ways never before possible. Thu, 31 Aug 2023 14:28:25 EDT //www.koonmotors.com/releases/2023/08/230831142825.htm //www.koonmotors.com/releases/2023/08/230831121743.htm By controlling the arrangement of multiple inorganic and organic layers within crystals using a novel technique, researchers have shown they can control the energy levels of electrons and holes (positive charge carriers) within a class of materials called perovskites. This tuning influences the materials' optoelectronic properties and their ability to emit light of specific energies, demonstrated by their ability to function as a source of lasers. Thu, 31 Aug 2023 12:17:43 EDT //www.koonmotors.com/releases/2023/08/230831121743.htm //www.koonmotors.com/releases/2023/08/230831121656.htm Optical-resolution photoacoustic microscopy is an up-and-coming biomedical imaging technique for studying a broad range of diseases, such as cancer, diabetes and stroke. But its insufficient sensitivity has been a longstanding obstacle for its wider application. Recently, a research team developed a multi-spectral, super-low-dose photoacoustic microscopy system with a significant improvement in the system sensitivity limit, enabling new biomedical applications and clinical translation in the future. Thu, 31 Aug 2023 12:16:56 EDT //www.koonmotors.com/releases/2023/08/230831121656.htm //www.koonmotors.com/releases/2023/08/230830131937.htm Researchers have developed a new approach to building quantum repeaters, devices that can link quantum computers over long distances. The new system transmits low-loss signals over optical fiber using light in the telecom band, a longstanding goal in the march toward robust quantum communication networks. Wed, 30 Aug 2023 13:19:37 EDT //www.koonmotors.com/releases/2023/08/230830131937.htm //www.koonmotors.com/releases/2023/08/230830131917.htm Historically, metasurface research has concentrated on the full manipulation of light's characteristics, resulting in a diverse array of optical devices such as metalenses, metaholograms, and beam diffraction devices. Nevertheless, recent studies have shifted their focus toward integrating metasurfaces with other optical components. Wed, 30 Aug 2023 13:19:17 EDT //www.koonmotors.com/releases/2023/08/230830131917.htm //www.koonmotors.com/releases/2023/08/230829130015.htm Researchers have shown that dissipative Kerr solitons (DKSs) can be used to create chip-based optical frequency combs with enough output power for use in optical atomic clocks and other practical applications. The advance could lead to chip-based instruments that can make precision measurements that were previously possible only in a few specialized laboratories. Tue, 29 Aug 2023 13:00:15 EDT //www.koonmotors.com/releases/2023/08/230829130015.htm //www.koonmotors.com/releases/2023/08/230828162337.htm Researchers have implemented a quantum-based method to observe a quantum effect in the way light-absorbing molecules interact with incoming photons. Known as a conical intersection, the effect puts limitations on the paths molecules can take to change between different configurations. The observation method makes use of a quantum simulator, developed from research in quantum computing, and offers an example of how advances in quantum computing are being used to investigate fundamental science. Mon, 28 Aug 2023 16:23:37 EDT //www.koonmotors.com/releases/2023/08/230828162337.htm //www.koonmotors.com/releases/2023/08/230828130356.htm Many songbirds use the earth's magnetic field as a guide during their migrations, but radiowaves interfere with this ability. A new study has found an upper bound for the frequency that disrupts the magnetic compass. Mon, 28 Aug 2023 13:03:56 EDT //www.koonmotors.com/releases/2023/08/230828130356.htm //www.koonmotors.com/releases/2023/08/230828130342.htm Scientists have developed a new method for detecting mid-infrared (MIR) light at room temperature using quantum systems. Mon, 28 Aug 2023 13:03:42 EDT //www.koonmotors.com/releases/2023/08/230828130342.htm //www.koonmotors.com/releases/2023/08/230828130148.htm Using a trapped-ion quantum computer, the research team witnessed the interference pattern of a single atom caused by a 'conical intersection'. Conical intersections are known throughout chemistry and are vital to rapid photo-chemical processes such as light harvesting in human vision or photosynthesis. Mon, 28 Aug 2023 13:01:48 EDT //www.koonmotors.com/releases/2023/08/230828130148.htm //www.koonmotors.com/releases/2023/08/230825165925.htm Researchers have developed and demonstrated a new method for high-throughput single-cell sorting that uses stimulated Raman spectroscopy rather than the traditional approach of fluorescence-activated cell sorting. The new approach could offer a label-free, nondestructive way to sort cells for a variety of applications, including microbiology, cancer detection and cell therapy. Fri, 25 Aug 2023 16:59:25 EDT //www.koonmotors.com/releases/2023/08/230825165925.htm //www.koonmotors.com/releases/2023/08/230824150751.htm A new approach to quantum light emitters generates a stream of circularly polarized single photons, or particles of light, that may be useful for a range of quantum information and communication applications. A team stacked two different, atomically thin materials to realize this chiral quantum light source. Thu, 24 Aug 2023 15:07:51 EDT //www.koonmotors.com/releases/2023/08/230824150751.htm //www.koonmotors.com/releases/2023/08/230824111848.htm A team of chemists have developed a novel concept in which a mixture of molecules that behave like mirror images is converted to a single form. To this end, they use light as external energy source. The conversion is relevant e.g. for the preparation of drugs. Thu, 24 Aug 2023 11:18:48 EDT //www.koonmotors.com/releases/2023/08/230824111848.htm //www.koonmotors.com/releases/2023/08/230822111648.htm In the ongoing quest for more efficient solar cells, the most current published record for tandem perovskite solar cells is 32.5 percent. In a new paper, researchers report on the improvements in silicon-perovskite tandem cells that have made this possible. Tue, 22 Aug 2023 11:16:48 EDT //www.koonmotors.com/releases/2023/08/230822111648.htm //www.koonmotors.com/releases/2023/08/230821174251.htm Physicists use a 350-year-old theorem that explains the workings of pendulums and planets to reveal new properties of light waves. Mon, 21 Aug 2023 17:42:51 EDT //www.koonmotors.com/releases/2023/08/230821174251.htm //www.koonmotors.com/releases/2023/08/230821114336.htm Recent research in cell biology highlights groundbreaking results. An international team of researchers have recently established a tool they developed to study the mechanics of the cell. The tool can be used to study the inner forces of the cell, for example, the stretching of the nuclear membrane. The microscopic force sensor, only about 0.00002 mm long, is constructed of exotic ingredients such as spider web protein parts, fluorescent proteins from jellyfish, and antibodies from alpaca. In addition, the multidisciplinary team of researchers has developed further the sensitivity of super-resolution microscopy technique. Mon, 21 Aug 2023 11:43:36 EDT //www.koonmotors.com/releases/2023/08/230821114336.htm //www.koonmotors.com/releases/2023/08/230818153117.htm Researchers have proposed a highly efficient method for detecting molecular chirality using tailored laser fields. Fri, 18 Aug 2023 15:31:17 EDT //www.koonmotors.com/releases/2023/08/230818153117.htm //www.koonmotors.com/releases/2023/08/230818135211.htm Scientists have observed novel ergodicity-breaking in C60, a highly symmetric molecule composed of 60 carbon atoms arranged on the vertices of a 'soccer ball' pattern (with 20 hexagon faces and 12 pentagon faces). Their results revealed ergodicity breaking in the rotations of C60. Remarkably, they found that this ergodicity breaking occurs without symmetry breaking and can even turn on and off as the molecule spins faster and faster. Understanding ergodicity breaking can help scientists design better-optimized materials for energy and heat transfer. Fri, 18 Aug 2023 13:52:11 EDT //www.koonmotors.com/releases/2023/08/230818135211.htm //www.koonmotors.com/releases/2023/08/230816170621.htm A new study shows that trapping light inside magnetic materials may dramatically enhance their intrinsic properties. Strong optical responses of magnets are important for the development of magnetic lasers and magneto-optical memory devices, as well as for emerging quantum transduction applications. Wed, 16 Aug 2023 17:06:21 EDT //www.koonmotors.com/releases/2023/08/230816170621.htm //www.koonmotors.com/releases/2023/08/230816114205.htm Indoor air pollution may have met its match. Scientists have designed catalyst-coated lampshades that transform indoor air pollutants into harmless compounds. The lampshades work with halogen and incandescent light bulbs, and the team is extending the technology so it will also be compatible with LEDs. Wed, 16 Aug 2023 11:42:05 EDT //www.koonmotors.com/releases/2023/08/230816114205.htm //www.koonmotors.com/releases/2023/08/230816114142.htm Research is underway around the world to find alternatives to our current electronic computing technology, as great, electron-based systems have limitations. A new way of transmitting information is emerging from the field of magnonics: instead of electron exchange, the waves generated in magnetic media could be used for transmission, but magnonics-based computing has been (too) slow to date. Scientists have now discovered a significant new method: When the intensity is increased, the spin waves become shorter and faster -- another step towards magnon computing. Wed, 16 Aug 2023 11:41:42 EDT //www.koonmotors.com/releases/2023/08/230816114142.htm //www.koonmotors.com/releases/2023/08/230816114057.htm 研究人员已经找到一种方法控制interaction of light and quantum 'spin' in organic semiconductors, that works even at room temperature. Wed, 16 Aug 2023 11:40:57 EDT //www.koonmotors.com/releases/2023/08/230816114057.htm //www.koonmotors.com/releases/2023/08/230815131838.htm Researchers have developed a new algorithm for recovering the 3D refractive index distribution of biological samples that exhibit multiple types of light scattering. Tue, 15 Aug 2023 13:18:38 EDT //www.koonmotors.com/releases/2023/08/230815131838.htm //www.koonmotors.com/releases/2023/08/230814122332.htm Medical imaging via X-rays, CT scans, MRIs and ultrasounds provide health-care professionals with unique perspectives and a better understanding of what's happening inside a patient's body. Using various forms of waves, these machines can visualize many unseen ailments and diseases. This imaging is beneficial for health-care professionals to make correct diagnoses, but the added insight of spectroscopy provides even more detail. Spectroscopy offers a means to identify biomolecules within specimens through their characteristic signatures for absorption in the electromagnetic spectrum. Mon, 14 Aug 2023 12:23:32 EDT //www.koonmotors.com/releases/2023/08/230814122332.htm //www.koonmotors.com/releases/2023/08/230814122310.htm Expensive noble metals often play a vital role in illuminating screens or converting solar energy into fuels. Now, chemists have succeeded in replacing these rare elements with a significantly cheaper metal. In terms of their properties, the new materials are very similar to those used in the past. Mon, 14 Aug 2023 12:23:10 EDT //www.koonmotors.com/releases/2023/08/230814122310.htm //www.koonmotors.com/releases/2023/08/230811143834.htm Through a series of innovative experiments, scientists found that a sheet of glass crystal just a few atoms thick could trap and carry light. Not only that, but it was surprisingly efficient and could travel relatively long distances -- up to a centimeter, which is very far in the world of light-based computing. Fri, 11 Aug 2023 14:38:34 EDT //www.koonmotors.com/releases/2023/08/230811143834.htm //www.koonmotors.com/releases/2023/08/230811143820.htm Using scaffolds of folded DNA, engineers assembled arrays of quantum rods with desirable photonic properties that could enable them to be used as highly efficient micro-LEDs for televisions or virtual reality devices. Fri, 11 Aug 2023 14:38:20 EDT //www.koonmotors.com/releases/2023/08/230811143820.htm //www.koonmotors.com/releases/2023/08/230811115459.htm A novel catalysis scheme enables chemical reactions that were previously virtually impossible. The method is also environmentally friendly and does not require rare and precious metals. The researchers recorded the exact course of the catalysis in a kind of high-speed film. They did this using special lasers that can make processes visible that last only fractions of a billionth of a second. The results allow them to further optimize the catalyst. Fri, 11 Aug 2023 11:54:59 EDT //www.koonmotors.com/releases/2023/08/230811115459.htm //www.koonmotors.com/releases/2023/08/230810110417.htm 将超快物理结构生物学h爱博网投领导者as revealed the dance of molecular 'coherence' in unprecedented clarity. Thu, 10 Aug 2023 11:04:17 EDT //www.koonmotors.com/releases/2023/08/230810110417.htm //www.koonmotors.com/releases/2023/08/230809130556.htm Researchers have developed an easy-to-build, low-cost 3D nanoprinting system that can create arbitrary 3D structures with extremely fine features. The new 3D nanoprinting technique is precise enough to print metamaterials as well as a variety of optical devices and components such as microlenses, micro-optical devices and metamaterials. Wed, 09 Aug 2023 13:05:56 EDT //www.koonmotors.com/releases/2023/08/230809130556.htm //www.koonmotors.com/releases/2023/08/230808151247.htm Researchers have reported the first 3D measurements acquired with quantum ghost imaging. The new technique enables 3D imaging on a single photon level, yielding the lowest photon dose possible for any measurement. Tue, 08 Aug 2023 15:12:47 EDT //www.koonmotors.com/releases/2023/08/230808151247.htm //www.koonmotors.com/releases/2023/08/230807152155.htm Defects often limit the performance of devices such as light-emitting diodes (LEDs). The mechanisms by which defects annihilate charge carriers are well understood in materials that emit light at red or green wavelengths, but an explanation has been lacking for such loss in shorter-wavelength (blue or ultraviolet) emitters. Mon, 07 Aug 2023 15:21:55 EDT //www.koonmotors.com/releases/2023/08/230807152155.htm //www.koonmotors.com/releases/2023/08/230807122001.htm Researchers have unveiled an artificial intelligence-based model for computational imaging and microscopy without training with experimental objects or real data. The team introduced a self-supervised AI model nicknamed GedankenNet that learns from physics laws and thought experiments. Informed only by the laws of physics that universally govern the propagation of electromagnetic waves in space, the researchers taught their AI model to reconstruct microscopic images using only random artificial holograms -- synthesized solely from 'imagination' without relying on any real-world experiments, actual sample resemblances or real data. Mon, 07 Aug 2023 12:20:01 EDT //www.koonmotors.com/releases/2023/08/230807122001.htm //www.koonmotors.com/releases/2023/08/230803113007.htm A research team recently developed a stable artificial photocatalytic system that is more efficient than natural photosynthesis. The new system mimics a natural chloroplast to convert carbon dioxide in water into methane, a valuable fuel, very efficiently using light. This is a promising discovery, which could contribute to the goal of carbon neutrality. Thu, 03 Aug 2023 11:30:07 EDT //www.koonmotors.com/releases/2023/08/230803113007.htm //www.koonmotors.com/releases/2023/08/230803113004.htm New research has achieved a significant breakthrough in color switching for nanocrystals, unlocking exciting possibilities for a simple, energy efficient display design and for tunable light sources needed in numerous technologies. The discovery also has potential applications in sensitive sensors for various substances, including biological and neuroscience uses, as well as advancements in quantum communication technologies. This nanomaterial breakthrough holds the promise of inspiring exciting innovations in the future. Thu, 03 Aug 2023 11:30:04 EDT //www.koonmotors.com/releases/2023/08/230803113004.htm //www.koonmotors.com/releases/2023/08/230803112920.htm New films inspired by butterfly wings circumvent the heating effect usually experienced by colored objects absorbing light on a hot day. The new films could be used on the outside of buildings, vehicles and equipment to reduce the energy needed for cooling while preserving vivid color properties. Thu, 03 Aug 2023 11:29:20 EDT //www.koonmotors.com/releases/2023/08/230803112920.htm //www.koonmotors.com/releases/2023/08/230802132010.htm The same fiber optic networks that provide internet can simultaneously act as earthquake sensors, as demonstrated in a new study. Wed, 02 Aug 2023 13:20:10 EDT //www.koonmotors.com/releases/2023/08/230802132010.htm //www.koonmotors.com/releases/2023/08/230801131652.htm Engineers have developed HADAR, or heat-assisted detection and ranging. Tue, 01 Aug 2023 13:16:52 EDT //www.koonmotors.com/releases/2023/08/230801131652.htm //www.koonmotors.com/releases/2023/08/230801105013.htm Theoreticians report that they found no evidence of any universal topological signatures after performing the first ab initio investigation of high harmonic generation from topological insulators. Tue, 01 Aug 2023 10:50:13 EDT //www.koonmotors.com/releases/2023/08/230801105013.htm //www.koonmotors.com/releases/2023/07/230731151552.htm Earth is rapidly warming and scientists are developing a variety of approaches to reduce the effects of climate change. An astronomer has proposed a novel approach -- a solar shield to reduce the amount of sunlight hitting Earth, combined with a tethered, captured asteroid as a counterweight. Engineering studies using this approach could start now to create a workable design that could mitigate climate change within decades. Mon, 31 Jul 2023 15:15:52 EDT //www.koonmotors.com/releases/2023/07/230731151552.htm //www.koonmotors.com/releases/2023/07/230731110723.htm Bringing protons up to speed with strong laser pulses -- this still young concept promises many advantages over conventional accelerators. For instance, it seems possible to build much more compact facilities. Prototypes to date, however, in which laser pulses are fired at ultra-thin metal foils, show weaknesses -- especially in the frequency with which they can accelerate protons. An international working group has tested a new technique: In this approach, frozen hydrogen acts as a 'target' for the laser pulses. Mon, 31 Jul 2023 11:07:23 EDT //www.koonmotors.com/releases/2023/07/230731110723.htm //www.koonmotors.com/releases/2023/07/230728170633.htm Researchers have developed a new technique that vastly improves readings of protein-to-ligand interactions through Raman spectroscopy. Fri, 28 Jul 2023 17:06:33 EDT //www.koonmotors.com/releases/2023/07/230728170633.htm //www.koonmotors.com/releases/2023/07/230728113433.htm Researchers have developed a pioneering technological solution that counterfeiters have no response to. Fri, 28 Jul 2023 11:34:33 EDT //www.koonmotors.com/releases/2023/07/230728113433.htm //www.koonmotors.com/releases/2023/07/230728113406.htm Using ultra-high-precision laser spectroscopy on a simple molecule, a group of physicists has measured the wave-like vibration of atomic nuclei with an unprecedented level of precision. The physicists report that they can thus confirm the wave-like movement of nuclear material more precisely that ever before and that they have found no evidence of any deviation from the established force between atomic nuclei. Fri, 28 Jul 2023 11:34:06 EDT //www.koonmotors.com/releases/2023/07/230728113406.htm //www.koonmotors.com/releases/2023/07/230727144234.htm Researchers are making progress on the design of a solar battery made from an abundant, non-toxic and easily synthesized material composed of 2D carbon nitride. Thu, 27 Jul 2023 14:42:34 EDT //www.koonmotors.com/releases/2023/07/230727144234.htm //www.koonmotors.com/releases/2023/07/230726113000.htm th塑料微粒的浓度有多高e environment, in our drinking water or in foods? Researchers have developed an automated analysis method for the identification and quantification of particles. Wed, 26 Jul 2023 11:30:00 EDT //www.koonmotors.com/releases/2023/07/230726113000.htm //www.koonmotors.com/releases/2023/07/230726112527.htm Researchers have developed a new method for capturing the complex behavior of turbulent flames produced during combustion. Insights provided by this high-speed 3D imaging approach could be used to develop more efficient and cleaner combustion systems for cars, airplanes, factories and power plants. Wed, 26 Jul 2023 11:25:27 EDT //www.koonmotors.com/releases/2023/07/230726112527.htm //www.koonmotors.com/releases/2023/07/230725171907.htm Researchers investigated the fatigue behavior of 2D hybrid materials, opening doors to their widespread use in real-world applications. Tue, 25 Jul 2023 17:19:07 EDT //www.koonmotors.com/releases/2023/07/230725171907.htm //www.koonmotors.com/releases/2023/07/230725123103.htm Researchers have created a quantum superposition state in a semiconductor nanostructure that might serve as a basis for quantum computing. The trick: two optical laser pulses that act as a single terahertz laser pulse. Tue, 25 Jul 2023 12:31:03 EDT //www.koonmotors.com/releases/2023/07/230725123103.htm //www.koonmotors.com/releases/2023/07/230725123057.htm Transparent and flexible displays, which have received a lot of attention in various fields including automobile displays, bio-healthcare, military, and fashion, are in fact known to break easily when experiencing small deformations. To solve this problem, active research is being conducted on many transparent and flexible conductive materials such as carbon nanotubes, graphene, silver nanowires, and conductive polymers. Tue, 25 Jul 2023 12:30:57 EDT //www.koonmotors.com/releases/2023/07/230725123057.htm //www.koonmotors.com/releases/2023/07/230725123042.htm Fast data transmissions could be delivered in homes and offices through light-emitting diodes (LED) bulbs, complementing existing communication technologies and networks. Tue, 25 Jul 2023 12:30:42 EDT //www.koonmotors.com/releases/2023/07/230725123042.htm //www.koonmotors.com/releases/2023/07/230725123003.htm Organic light-emitting diodes (OLEDs) are now widely used. For use in displays, blue OLEDs are additionally required to supplement the primary colors red and green. Especially in blue OLEDs, impurities give rise to strong electrical losses, which could be partly circumvented by using highly complex and expensive device layouts. A team has now developed a new material concept that potentially allows efficient blue OLEDs with a strongly simplified structure. Tue, 25 Jul 2023 12:30:03 EDT //www.koonmotors.com/releases/2023/07/230725123003.htm //www.koonmotors.com/releases/2023/07/230725122949.htm Researchers have created a robot capable of conducting experiments more efficiently and sustainably to develop a range of new semiconductor materials with desirable attributes. The researchers have already demonstrated that the new technology, called RoboMapper, can rapidly identify new perovskite materials with improved stability and solar cell efficiency. Tue, 25 Jul 2023 12:29:49 EDT //www.koonmotors.com/releases/2023/07/230725122949.htm //www.koonmotors.com/releases/2023/07/230721113235.htm The new carbon nanotube sensor design resembles a molecular toolbox that can be used to quickly assemble sensors for a variety of purposes -- for instance for detecting bacteria and viruses. Fri, 21 Jul 2023 11:32:35 EDT //www.koonmotors.com/releases/2023/07/230721113235.htm //www.koonmotors.com/releases/2023/07/230719112628.htm 研究人员正在开发一种分层光催化剂that can be used to produce hydrogen very efficiently from water. Wed, 19 Jul 2023 11:26:28 EDT //www.koonmotors.com/releases/2023/07/230719112628.htm //www.koonmotors.com/releases/2023/07/230718164242.htm A bifacial perovskite solar cell, which allows sunlight to reach both sides of the device, holds the potential to produce higher energy yields at lower overall costs. Tue, 18 Jul 2023 16:42:42 EDT //www.koonmotors.com/releases/2023/07/230718164242.htm //www.koonmotors.com/releases/2023/07/230718105618.htm Tiny plastic particles are an environmental problem. They can even penetrate living cells. A method has now been developed at TU Wien to detect such particles quickly and with high sensitivity. Tue, 18 Jul 2023 10:56:18 EDT //www.koonmotors.com/releases/2023/07/230718105618.htm