Articles tagged with Light Matter Interactions
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Researchers have explored the limits of light-matter coupling at the nanoscale, discovering a fundamental physical limit to subwavelength confinement. The study reveals that as light is concentrated into smaller volumes, its interaction with matter changes in ways that cannot be predicted by classical theories.
Exciton-polaritons exhibit non-linear effects, including Bose-Einstein condensation and polariton lasing without occupation inversion. The study reveals energy-degenerate parametric scattering of polaritons and opens up new avenues for research on multi-level polariton systems.
Researchers at ETH Zurich have produced a crystal consisting exclusively of electrons, overcoming previous obstacles due to the low mass and high motional energy of electrons. The team used light to excite excitons in the semiconductor layer, allowing them to visualize the periodic arrangement of electrons.
Researchers propose a new method to control temperature through designing nanoantennas on engraved Si nanopillars, enabling local sensing of glass transitions in amorphous polymers with nanometer spatial resolution. This technology opens unique opportunities for studying the physicochemical properties of nanostructured polymers.
Physicists used attosecond pulses to study tungsten crystals' photoelectron emission dynamics. The results show that electrons from neighboring energy states in the valence band differ by tens of attoseconds in their response times.
Researchers from several institutions have successfully integrated a novel on-chip hollow-core light cage into an alkali atom vapor cell, overcoming previous limitations. The device exhibits high-speed gas diffusion and long-term stability, enabling integration with other technology platforms.
Researchers develop a new technique to investigate surface structures of semiconductors at the atomic scale. The technique, called atomic point contact Raman spectroscopy, reveals enhanced Raman scattering from silicon surfaces when a plasmonic silver tip is brought into contact with the surface.
Researchers at Trinity College Dublin developed a magnetic material that demonstrates the fastest magnetic switching ever recorded, six times faster than the previous record. The discovery could lead to new energy-efficient ultra-fast computers and data storage systems, revolutionizing the field of information technology.
Researchers at UC Riverside are developing a new approach to convert light falling on atomically thin semiconductor materials into electricity. By twisting these materials, they aim to create new sensing capabilities for layered and stacked monolayer semiconductors.
The 2Exciting Network aims to train 15 Early Stage Researchers in scientific and soft skills, focusing on 2D semiconductors and optoelectronics. The network brings together academic groups and companies to develop innovative optoelectronic devices for telecommunications and next-generation technology applications.
Researchers at Shinshu University have developed an acoustic cloaking structure that can operate in both air and water. The design uses finite element analysis to optimize the material selection and acoustics properties, enabling functionality in a wide frequency band.
Scientists have proposed an effective approach to achieve full Poincaré sphere polarizers in one step using monolayer metasurfaces with arbitrary polarization conversion dichroism. The system can generate an arbitrarily polarized beam at any position on the Poincaré sphere, making it a monolithic arbitrary polarization generator.
The review article discusses modulation strategies for 2D semiconductors, including Coulomb interaction modification and influencing factors like initial photocarrier distribution and phonon-assisted relaxation. Researchers aim to provide guidance for developing robust methods tuning photocarrier relaxation behaviors.
Scientists at USTC developed a new technique to detect chiral structures using vortex light, which interacts with the structure's microstructure to produce significant scattering. This technique allows for monochromatic light detection and provides a novel method for studying chiral light-matter interactions.
Using spatially structured ultrashort laser pulses, materials can be modified with diverse effects, from marginal refractive index changes to destructive microscale explosions. This technology allows true micron-scale material processing due to extremely short exposure times and low thermal diffusion.
A team of scientists has devised a mid-infrared free standing solid core optical waveguide that pushes the light interaction with air beyond previous reports. The guided mode resembles a free-space beam, with minimal overlap with material imperfections, reducing spurious fringes and loss.
Polaritons interact more than expected due to strong light-matter coupling and huge exciton-photon mass ratio. This challenges common assumptions about these quasiparticles, shedding new light on their interactions and applications in ultra-low energy electronics.
Researchers have shown that a single layer of graphene can convert light into various colors through nonlinear interactions. The team used nanometer-sized gold ribbons to squeeze light into the graphene, producing strong optical nonlinearities.
Research team led by HPSTAR discovered that isotope effect can significantly suppress lattice distortion in hybrid perovskites, leading to enhanced photoluminescence and structural robustness. This breakthrough suggests a new path for designing more stable photovoltaic materials with superior performance.
Researchers develop novel design and fabrication techniques for rainbow light trapping, enabling extreme light confinement and versatile application in low concentration molecular sensing, enhanced photocatalysis, and super-resolution optics. The technique uses analytical modeling to optimize groove geometry for broadband electromagnet...
Researchers from University of Konstanz and LMU Munich demonstrate ultrafast electron diffraction to uncover nanomaterials' functionality. They observe quantum mechanical phase shift through interaction with light waves, providing a movie-like sequence of images revealing fundamental light-matter interactions.
The team created a scalable and high-throughput method to produce ordered porous titania films with through-hole membranes. The process involves applying heat to crystallize the film and selectively dissolving the amorphous portion to free the membrane.
Researchers at University of Konstanz and Ludwig-Maximilians-Universität München develop a prototypical attosecond electron microscope (A-TEM) that enables visualization of light-matter interactions at attosecond speeds. This breakthrough can facilitate the exploration of atomic origins of light-matter interactions in complex materials...
Researchers at the Technion-Israel Institute of Technology have developed a floating laser resonator that breaks records in resonance enhancement. The device amplifies light power by an astonishing 10 million watts, equivalent to a large neighborhood's electricity consumption.
Researchers developed a theoretical model to predict spectral splitting of excitons in WSe2 under magnetic field. The results provide better understanding of opto-electronic properties and potential applications in quantum technologies.
Physicists have created a new method to study previously invisible quantum states of electrons using optical vortices. By combining conventional laser beams with swirls of light, researchers can detect the properties of emitted photoelectrons and gain insights into material structure and interaction with light.
The study observed a rare phenomenon known as the dynamic breaking of Friedel's Law in layered van der Waals materials, where the pairs of Bragg peaks show opposite oscillating patterns. This unique behavior is attributed to the lattice structure of the material and its effect on electron diffraction.
Researchers at Rice University have discovered trochoidal dichroism, a novel type of polarized light-matter interaction. The discovery reveals that different wavelengths of light interact differently with plasmonic nanoparticles, which could help study molecules and determine molecular orientation.
Researchers from Rensselaer Polytechnic Institute have developed a new method to measure the mass of individual components in quasiparticles, which could play a crucial role in future applications of quantum computing and more efficient energy conversion. The study reveals significant differences in mass between electrons and holes in ...
The researchers have demonstrated a world record for the largest spectral, color-tuning range from an atomically thin quantum system. By stretching the material, they induced mechanical expansion of the quantum source, resulting in dramatic tuning range of colors emitted by quantum light.
Scientists have developed a new photostimuable LiGa5O8: Mn2+ glass ceramic medium for three-dimensional volumetric optical data storage, enabling expanded storage capacity and improved information security. The material's high transparency and controlled crystallization lead to a highly ordered nanostructure with low bit error rates.
Researchers synthesized a unique organic-inorganic hybrid crystal with controllable ferroelectricity and chirality, enabling new electrical, magnetic, or optical properties. This discovery could lead to advancements in communication and computing technologies.
Researchers at Southern Methodist University have developed a more efficient algorithm to simulate the interaction of electromagnetic waves with devices, reducing simulation time from days to hours. This breakthrough has significant implications for various scientific fields, including biology, astronomy, and military applications.
Researchers at ETH Zurich have made a breakthrough in understanding the interaction between light and matter, revealing how linear momentum is transferred to electrons during ionisation. The study found that the timing of electron 'birth' affects momentum transfer, with additional delays induced by interactions with residual ions.
Professor Andrea Armani's team has developed a new laser technology that uses surface Raman lasers with monolayer coatings of siloxane molecules, resulting in improved power consumption and reduced toxicity. This breakthrough has significant implications for applications in communications, diagnostics, and defense.
Physicists have discovered that useful information about ultrafast light-matter interactions is buried deep within signals produced by two-colour pump-probe experiments. Advanced techniques are required to extract this information, which could lead to breakthroughs in fields such as vision and photosynthesis.
Scientists at TU Wien discover that atomic defects and mechanical strain interact to produce single photons, enabling experiments in quantum information and cryptography. This phenomenon was previously unknown and has opened up new possibilities for materials science.
The UCLA researchers have significantly increased the system's accuracy by adding a second set of detectors to the system, representing each object type with two detectors rather than one. The new design takes advantage of parallelization and scalability of optical-based computational systems.
Engineers at the University of Illinois have found a way to redirect misfit light waves to reduce energy loss during optical data transmission. By exploiting an interaction between light and sound waves, they were able to suppress backscattering in silica glass, a common material used in fiber optic cables.
The new microrobots can load, transport and deliver cellular material with greater speed and less damage than traditional methods, opening up a wide range of applications in life sciences and beyond. They also enable precise control over cell behavior, which is crucial for regenerative medicine and neural repair.
Researchers created a novel solid-state spin filtering device with artificial molecular motors that switch spin polarization direction by light irradiation and thermal treatments. The device demonstrates 4 times chirality inversion, allowing for precise control of spin-polarization direction in spin-polarized currents.
A team of researchers has developed a new experimental and theoretical framework to interpret spectroscopic signals from magnetic materials when probed with extreme ultraviolet radiation. This allows for the disentanglement of signals from different elements in the material, enabling the study of complex dynamic processes.
A team at Chalmers University of Technology has proposed creating ultra-intense light pulses to study interactions between matter and light. These pulses can be used to probe and control matter in unique ways, offering new insights into material science and quantum states.
Researchers at Okinawa Institute of Science and Technology (OIST) have demonstrated how microwaves interact with matter, enabling the movement of electrons. This breakthrough may help improve quantum computing by controlling electrons with precision, leading to faster and more powerful technologies.
A new paper reveals unique excitonic complex particles in atomically thin semiconductors, possessing a new quantum degree of freedom called valley spin. This discovery could lead to novel applications in electronic and optoelectronic devices.
Scientists are exploring a new propulsion idea that could eliminate fuel costs and make interplanetary travel easier. Dr. Mike McCulloch's quantised inertia theory predicts that objects can be pushed by differences in Unruh radiation in space.
Researchers at Rice University have discovered the first example of Dicke cooperativity in a matter-matter system, which could lead to faster information processing and lower power consumption. The discovery uses a magnetic field to prompt cooperativity among spins within a crystalline compound made primarily of iron and erbium.
A team of researchers has discovered a way to measure the effect of light momentum on materials, shedding new light on a 150-year-old mystery. The study reveals that light momentum is converted into force through elastic waves on mirrors.
Researchers at Chalmers University of Technology discovered a speed limit for smart technology gadgets that control light and internet traffic. By manipulating individual particles or allowing speciality materials to remain in motion, they can bypass this limit.
Researchers have devised a method to study how light affects materials, shedding light on the fundamental laws governing electron-light interactions. The new approach enables better understanding of material behavior, which can be applied to improve devices such as optical sensors and photovoltaic cells.
Researchers at MIT have devised a new method for enhancing the interaction between light and matter, which could lead to more efficient solar cells that collect a wider range of light wavelengths. By slowing down light and controlling its frequency, they can also create tunable color LEDs with fully tunable emissions.
Researchers detect Bloch-Siegert shift in strongly coupled light and matter, a phenomenon previously speculated but never observed. The discovery could lead to a greater understanding of theoretical predictions in quantum phase transitions and the development of robust quantum bits for advanced computing.
Researchers at University of Cambridge develop a printing technique that can write structures small enough to trap and harness light. The method combines high-resolution inkjet printing with nanophotonics, enabling the creation of sensors, lasers, and compact optical circuits.
Researchers used advanced synchrotron measurement setup to study spin dynamics of ferrimagnetic thin films containing different proportions of gadolinium. They found that varying composition dramatically changed response to laser pulse, leading to improved switching speeds and precision.
The Cornell Center for Materials Research has been awarded $23.2 million in NSF funding for six years, a 26% increase from the 2011 award. This funding supports research projects focused on spin manipulation, light-matter interactions and 3D systems.
Scientists at MIT and their collaborators have developed a new approach to ultrafast light pulses by coupling molecular aggregates with thin layers of metals like silver. This enhancement increases the material's response time tenfold, making it suitable for applications in photonic chips and signal processing.
Researchers at Sandia National Laboratories have developed a new optical switch that can turn light on and off at trillionths of a second, enabling faster information processing. The breakthrough could also be used in biological imaging and chemical spectroscopy.
A team at MIT has created a system that can manipulate particles ranging from molecules to bacteria-sized objects using ordinary light. The researchers engineered asymmetrical particles, called Janus particles, which respond to the orientation of the beam and create forces that set them spinning uniformly.
Scientists have observed room-temperature superfluidity in light, a phenomenon previously only seen at extremely low temperatures. This breakthrough could lead to the development of new photonic devices with reduced losses and enhanced performance.
Researchers at University of Central Florida develop a new method to detect interactions between light and matter on a single layer of atoms, enabling the study of 2D materials and controlling light at subwavelength scales.