Articles tagged with Optical Metamaterials
Researchers have successfully reprogrammed a tiny optical device using light, allowing for flexible and energy-efficient processing in optical computing. The device uses liquid crystals and a metasurface to control the properties of light, enabling the manipulation of optical components in real-time.
Researchers at CUNY ASRC discover stable, repeating wave patterns in hyperbolic materials, allowing for new approaches to controlling energy, information, and communication signals. The findings have parallels with ocean waves and nanophotonics, enabling the design of wave behavior rather than simply observing it.
Researchers discovered hidden repeating patterns in seemingly disordered nanostructures, allowing for faster and more accurate analysis and design of metasurfaces. This breakthrough enables the development of next-generation optical devices, including AR and VR components and high-performance metalenses.
Researchers at Pohang University of Science and Technology have developed a speaker system that can deliver sound to a single listener, using dual-domain metamaterials and a compact ultrasonic transducer. The system achieves highly directional audio generation, focusing sound at the front and blocking parasitic noise at the back.
Researchers designed a compact, optically addressed programmable metasurface using VO2-based phase change materials. The device enables pixel-level independent encoding and dynamic generation of THz wavefronts for various applications including zoom meta-lensing, vortex beams, and holography.
Researchers created microspheres with twisted-bipolar molecular configuration, enabling angle-selective optical resonance and laser oscillation. The resulting emissions mimic Saturn's rings, showcasing directional control of light in microscopic spaces.
Researchers developed a programmable virtual metasurface that converts invisible infrared images into visible light while dynamically controlling focus. The system uses software-defined optical patterns and can be reconfigured in real time, offering a new approach for infrared imaging and wavefront control.
Researchers have developed a tiny, electrically tunable infrared filter that can distinguish between different materials and gases based on their spectral 'fingerprints'. This technology has the potential to enable handheld pollution detectors, compact multispectral cameras, and next-generation chemical sensing devices.
A Korean research team created an underwater acoustic lens capable of focusing sound precisely at a desired point while reducing weight by about 40% compared to conventional designs. The findings have significant implications for underwater communication, marine environmental monitoring, and acoustic energy transfer.
A new telescope technology, featuring a metasurface component, can collect scientifically meaningful data from the Sun in a single snapshot. This technology solves problems in space missions by stabilizing telescopes and reducing costs.
Researchers from The University of Osaka propose a compact LED design that directly emits circularly polarized light, potentially simplifying optical devices. The new design uses robust inorganic materials and achieves high levels of both efficiency and polarization degree.
Researchers developed a metastructure-based strategy for continuous color-gamut control, time-programmable modulation, and self-destruction capability. This enables high-resolution monochromatic and multicolor device printing and recognition of structural-color patterns for anti-counterfeiting labels.
Researchers have created a flexible microwave device that generates Stokes skyrmions in free space, even when bent or partially broken. These exotic field structures preserve their topological charge under deformation, making them suitable for encoding information and resisting distortion in wireless communication systems.
Researchers design nanostructured surface to exhibit strong nonreciprocal magnetoelectric coupling, overcoming experimental challenges. The achieved Tellegen response is about 100 times stronger than that found in any known natural material.
Researchers have created a nonlinear metasurface that efficiently generates and steers visible light through controlled geometric phase. The device combines high-Q resonance enhancement with pixel-level control of the wavefront, enabling compact chip-based visible/UV sources and LiDAR beam steering.
Researchers at CUNY ASRC developed a metasurface that converts infrared light to visible green light and steers it using polarization control. The device is 100 times more efficient than comparable devices, enabling ultra-compact light sources and on-chip beam steering for various technologies.
Scientists have developed a new optical device that can generate both electric and magnetic vortex-ring-like light patterns, known as skyrmions. The device uses a nonlinear metasurface to achieve the first experimental demonstration of skyrmions that can be switched between electric and magnetic modes in toroidal terahertz light pulses.
A nanostructure composed of silver and an atomically thin semiconductor layer can be turned into an ultrafast switching mirror device, displaying properties of both light and matter. This discovery could lead to dramatically increased information transmission rates in optical data processing.
Researchers visualized how light is transformed inside a chiral metasurface in both real space and real-time, achieving nanometer spatial resolution and femtosecond temporal resolution. The team found that the asymmetric near fields are a genuine signature of the chiral geometry.
Researchers have developed an on-chip nonlocal metasurface for color router, exploiting symmetry-broken quasi-bound states in the continuum to modulate light extraction intensity and spectral output. The approach achieves efficient, narrowband color routing while minimizing energy utilization efficiency loss from spatial multiplexing.
Researchers developed a novel approach to create dynamic metasurfaces using reversible metal electrodeposition, achieving high optical tunability. The technology demonstrates record-high signal-to-noise ratios in various wavelength regimes, enabling reconfigurable optical and thermal devices.
A team from Harvard and University of Lisbon found that silica, a low-refractive index material, can be used for making metasurfaces despite long-held assumptions. They discovered that by carefully considering the geometry of each nanopillar, silica behaves as a metasurface, enabling efficient design of devices with relaxed feature sizes.
A team of researchers has developed a dual-response cellulose–WO3 composite film that can switch tint in seconds and survive 200 cycles. The membrane is made from wood and can be roll-coated on existing paper machines, making it a sustainable alternative to traditional smart glass.
Physicists Tom Hoekstra and Jorik van de Groep have realized an actively tunable metasurface using a novel quantum material, enabling the creation of a nanoscale mirror that can be turned on and off. The device harnesses excitons in 2D materials to control light with record efficiency.
Researchers at China Jiliang University have developed a comprehensive review of metasurfaces for generating and controlling perfect vortex beams. The advancements in this field offer new possibilities for high-precision optical applications.
Engineered metasurfaces can focus and control light to trigger responses in specific cells, enabling precise, wireless stimulation. This breakthrough lays the foundation for next-gen bioelectronic implants with targeted cell activation or cancer therapy.
A new LiDAR system combines the advantages of beam array scanning and flash LiDAR technologies, enabling high-precision detection across diverse applications. The device features a mechanically reconfigurable metasurface platform that synergizes tunable hybrid cascaded metasurfaces with a shape memory alloy micro-actuator.
A new metasurface design improves the brightness and image quality of augmented reality (AR) glasses by reducing light loss and preserving shape. The technology has potential applications beyond AR, such as automotive and aerospace head-up displays.
Researchers successfully generate even and odd terahertz frequencies using topological insulator-based van der Waals metamaterials, confirming long-standing theories and opening doors to new applications. This breakthrough enables the development of compact terahertz sources, sensors, and ultrafast optoelectronic devices.
Researchers developed a 2x2 on-chip metasurface network on lithium niobate photonics to achieve high-speed, dynamically tunable light field control and large-capacity information processing. The design enables four-channel multiplexing for illumination direction and polarization control.
Scientists have developed a new type of metasurface that combines waveguide physics with planar design to achieve precise control over light at the nanoscale. The metasurfaces produce photonic flatbands across wide angles while preserving ultrahigh quality factors, enabling efficient trapping of light and strong interactions with matter.
Researchers introduce a new theoretical framework that accounts for higher-order spatial harmonics in gradient metasurfaces, enabling precise control over inter-unit coupling. This allows for unprecedented harmonic-selective control in devices, with applications in ultra-dense beamforming and reconfigurable multichannel sensing.
Researchers have developed a new approach to manufacturing multicolour lenses using metamaterials, overcoming major limitations of metalenses. The design enables polarisation independence and scalability through mature semiconductor nanofabrication platforms.
Researchers have developed a patterned layer of material that can dynamically tune advanced optical processes at visible wavelengths. The breakthrough enables adaptive camouflage, biosensing, and quantum light engines, leveraging the unique properties of van der Waals materials.
Researchers developed a graphene-based single-gate electro-optic metasurface that controls light direction using a single electrode, simplifying device structure while maintaining high optical efficiency. The metasurface achieved large beam switching angles and demonstrated scalability for next-generation programmable photonic systems.
Researchers develop a generic strategy for vectorial holography using ultrathin metasurfaces, enabling complex images with spatially varying polarization states. The method achieves high efficiency, outperforming previous systems, and has potential applications in optical encryption and anticounterfeiting.
Recent developments in metalenses focus on increasing structural complexity, broadening achromatic bandwidth, and improving efficiency. Dual-metalens systems offer high-dimensional light-field modulation and parallel imaging capabilities.
A nanometer-thin spacer layer has been inserted into exciplex upconversion OLEDs (ExUC-OLEDs) to improve energy transfer, enhancing blue light emission by 77-fold. This design enables the use of previously incompatible materials, paving the way for lightweight, low-voltage, and more flexible OLEDs.
Researchers have developed a technique to observe phonon dynamics in nanoparticle self-assemblies, enabling the creation of reconfigurable metamaterials with desired mechanical properties. This advance has wide-ranging applications in fields such as robotics, mechanical engineering, and information technology.
Researchers have developed an integrated metasurface-integrated quantum analog computing system, simplifying phase reconstruction and achieving high signal-to-noise ratio at low photon levels. This technology has broad application potential in fields such as optical chips, wave function reconstruction, and label-free biological imaging.
Researchers have demonstrated an intelligent hybrid strategy for simultaneous multi-degree-of-freedom tailoring, enabling the generation of high-dimensional laser fields. This advancement represents a significant step forward in high-dimensional photonics, offering advantages in scalability and simplicity.
Researchers introduce Debye relaxation model into metamaterials, bridging gap between dielectric physics and metamaterial design. This breakthrough enables ultra-broadband electromagnetic parameter regulation, advancing artificial material design.
Scientists at Linköping University have made a significant breakthrough in creating controllable flat optics using nanostructures on a flat surface. By precisely controlling the distance between antennas, they achieved up to tenfold improvement in performance, opening up new avenues for applications such as video holograms and biomedic...
Researchers propose a novel solution using a single gradient metasurface to realize quantum controlled-Z (CZ) gates, enabling high-density integration and multifunctionality. This design allows for both polarization-encoded and path-encoded CZ gates, with potential applications in quantum computing, communication, and sensing.
Researchers have developed an innovative achromatic metasurface waveguide that eliminates chromatic dispersion and offers improved image clarity. The single-layer design simplifies manufacturing while enhancing system performance compared to traditional multi-layer waveguides.
The researchers used high-speed laser writing to create lines spaced just 100 nm apart on a glass substrate, achieving super-resolution 3D direct laser writing. They overcame the challenge of intense laser light causing unwanted exposure in nearby areas by using a unique dual-beam optical setup and special photoresist.
Researchers develop inverse design method for metasurfaces, controlling nonlocal behavior and structure complexity. Smooth boundary deformations ensure compatibility with fabrication processes.
Researchers at Macquarie University developed a new software package, TMATSOLVER, that accurately models complex wave scattering for metamaterial design. The tool enables rapid prototyping and validation of new metamaterial designs, accelerating research and development in this growing global market.
Researchers developed a new 2D quantum sensing chip using hexagonal boron nitride that can simultaneously detect temperature anomalies and magnetic fields in any direction. The chip is significantly thinner than current quantum technology for magnetometry, enabling cheaper and more versatile sensors.
Researchers at the University of Melbourne have developed a compact, high-efficiency metasurface-enabled solenoid beam that can draw particles toward it. The technology has the potential to reduce pain and trauma associated with current biopsy methods.
A team of researchers has created a novel approach to control thermal emission by designing an interface that joins two surfaces with different geometric properties. This allows for localized thermal emissions from designated areas, enabling applications in infrared optics, sensing, and satellite technology.
Researchers at TMOS have developed a new infrared filter thinner than cling wrap, which can be integrated into everyday eyewear, allowing users to view both visible and infrared light spectra. This breakthrough miniaturizes night vision technology, opening up new applications in safety, surveillance, and biology.
Researchers have developed a new device that can determine photon pair properties in a single shot, improving precision and accuracy in quantum technologies. The metasurface-enabled multiport interferometer reduces size, weight, and power while increasing reliability.
The new metafluid can transition between Newtonian and non-Newtonian states, allowing for programmable viscosity and compressibility. The researchers demonstrated the fluid's capabilities in a hydraulic robotic gripper, picking up objects of varying weights without crushing them.
Researchers at Aalto University have developed an optical metamaterial that enables the creation of truly one-way glass, opening up new applications for industries. The metamaterial harnesses the nonreciprocal magnetoelectric effect to control light transmission in both directions.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences developed a 10-centimeter-diameter glass metalens that can image the sun, moon, and distant nebulae with high resolution.
Researchers have created a new type of conducting polymer with a helically grown structure, which can emit circularly polarized light. The polymer's radicals are arranged in a helical shape and can be aligned into stripe-like structures when exposed to a magnetic field.
Researchers have developed a method to stabilize the –1 state of boron vacancy defects in hBN, enabling it to replace diamond as a material for quantum sensing and quantum information processing. The team discovered unique properties of hBN and characterized its material, opening up new avenues for study.
Researchers have developed flexible photodetectors that can detect visible to long-wave infrared radiation, covering the full spectrum of greenhouse gases without complex optical components. The new detectors are simple and cost-effective to make, with production at room temperature.
A new type of photonic time crystal has been developed, showing that these artificial materials can amplify electromagnetic waves. This could lead to more efficient wireless communications and improved lasers., The creation of two-dimensional photonic time crystals makes them easier to fabricate and experiment with.