Articles tagged with Metasurfaces
Researchers developed a smart window that uses electromagnetic Weber beams to eliminate blind zones in in-vehicle communications. The system demonstrates significant improvements in 5G signal power, enabling real-time transmissions of high-fidelity images.
Researchers developed a self-stealth metasurface that achieves in-band and out-of-band radar cross-section (RCS) reduction across multiple frequencies. The metasurface enables real-time digital control for beamforming, information modulation, and smart surfaces, resolving performance/power/integration trade-offs.
Researchers developed a highly sensitive light-based sensor that can detect extremely low concentrations of cancer biomarkers in the blood. The sensor combines nanostructures made of DNA with quantum dots to detect faint biomarker signals, holding promise for early cancer diagnosis and personalized treatment options.
Researchers at Pohang University of Science & Technology developed a secure hologram platform that stores information using the wavelength of light and spacing between metasurface layers. The technology enables information processing using light alone, without electrical power or electronic chips.
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.
Researchers developed a new 'frequency-multiplexed elastic metasurface' that can precisely direct elastic waves at distinct frequencies onto different locations, enhancing signal intensity by up to 48 times. This technology breaks the conventional belief that one structure can perform only one function.
Columbia physicists develop new method to scale neutral-atom arrays using metasurfaces, enabling creation of 2D arrays with thousands of trapped atoms. The technology has the potential to benefit quantum computing and other neutral-atom quantum technologies.
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.
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.
The POSTECH team proposes two innovative strategies using nanoimprint lithography to address the limitations of traditional metasurface manufacturing. The hybrid material method and particle-embedded resin method enable high-performance metasurfaces with optical efficiencies comparable to electron beam lithography, making large-scale m...
Researchers at Columbia University have introduced metasurfaces to 2D materials, allowing for the enhancement of nonlinear optical properties and the creation of entangled photons. The technique, developed by Jim Schuck's team, shrinks nonlinear platforms to just 160 nanometers while maintaining high efficiency.
Researchers developed a unified theory for integrated radiation-scattering manipulation, enabling on-demand design of RIS. The meta-atom combines phase, polarization, amplitude, waveform, frequency, and time properties, providing multifunctional capabilities within a single platform.
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.
A novel laser-induced graphene-based strategy has been demonstrated for direct 'drawing' of highly precise, patterned electromagnetic metasurfaces. The metasurface exhibits excellent switching behavior across various frequency bands, enabling rapid switching between wave transmission and shielding.
Metasurfaces overcome THz biosensing challenges by leveraging resonance modes, graphene enhancement, and CNT films. Graphene-based sensors achieve high detection limits, while CNT film sensors exhibit good biocompatibility and sensitivity. All-dielectric metasurfaces also show promise with low loss and high Q-factor.
Researchers at CUNY ASRC introduce twistelastics, a technique using tiny rotations to manipulate mechanical waves, allowing unprecedented adaptability in sound and vibration control. The breakthrough enables flexible wave behavior for applications in medical imaging, consumer electronics, and microfluidics.
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.
A novel metasurface design using vanadium dioxide enables fast, energy-efficient modulation of terahertz waves. This allows for real-time holographic encryption and decoding, with applications in secure communication, medical imaging, and more.
Researchers developed an electrically tunable metasurface for THz holographic devices, leveraging VO2's reversible transition to minimize energy consumption and response time. The microladder design enables real-time operation, fast switching times, and robust performance.
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 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.
Noncommutative metasurfaces enable diverse path entanglement by exploiting interaction between metasurfaces and entangled photons, expanding quantum information processing capabilities. The research paves the way for high-dimensional information encoding in quantum communications and parallel processing in quantum computing.
Research team reviews digital-coded metasurface technology for wireless communication, highlighting its advantages in miniaturization, low power consumption and real-time programmability. The study explores various applications and potential societal impact of this emerging technology.
Researchers developed a single-layer metasystem for 3D inspection of fine structural features, integrating transmission and reception functionalities into a compact architecture. The system achieves high accuracy, with lateral resolution errors under 10 µm and depth variations as fine as 20 µm.
A team of researchers developed a space-time-coding metasurface technology that can simultaneously detect multiple liquids with high accuracy, overcoming traditional detection system limitations.
A research team at POSTECH developed a metasurface technology that can display multiple high-resolution images on a single screen, overcoming conventional holographic limitations. The innovation uses nanostructure pillars to precisely manipulate light, allowing for different images based on wavelength and polarization direction.
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...
A team of researchers from Jinan University has developed a metasurface-based imaging technique that can precisely measure the intensity, phase, and polarization of arbitrary light field distributions in a single exposure. The system uses optimized metasurface structural parameters to diffract incident light fields into sub-images that...
Researchers developed a passive filtering system that selectively allows only the first incoming wave to pass through, rejecting time-delayed signals. This innovation enables more reliable wireless communications and has potential applications beyond addressing multipath issues.
Researchers introduce Debye relaxation into metamaterials, bridging the gap between dielectric physics and metamaterial design. The model enables broadband electromagnetic parameter regulation, opening new dimensions for dispersion control.
Researchers developed an innovative solution combining inverse-designed metasurface couplers and high-refractive-index waveguides to eliminate chromatic dispersion in AR displays. The single-layer design simplifies manufacturing while enhancing system performance, positioning it as a promising technology for next-generation AR devices.
A new bilayer metasurface, made of two stacked layers of titanium dioxide nanostructures, has been created by Harvard researchers. This device can precisely control the behavior of light, including polarization, and opens up a new avenue for metasurfaces.
Researchers developed a conformal programmable metasurface that generates Orbital Angular Momentum (OAM) waves at millimeter-wave frequencies without external spatial excitation. The design mitigates feed leakage radiation and realizes low-profile configuration, enabling next-generation wireless communication and space-based applications.
Researchers developed a new liquid-crystal-based platform to handle hundreds of optical modes in compact two-dimensional setups, overcoming optical losses. This breakthrough enables the scalability of quantum simulations and all-optical AI systems.
Researchers have made significant progress in developing intelligent metasurfaces to reshape the wireless communication environment, enabling efficient signal relay and processing. The technology has the potential to improve network performance with limited spectral resources.
Researchers have created quantum holograms using metasurfaces and nonlinear crystals, enabling precise control over entangled information. The technology holds promise for practical applications in quantum communication and anti-counterfeiting, with potential to increase information capacity and reduce system size.
Researchers developed a new approach using metasurfaces to generate multiphoton entanglement, simplifying the process while increasing efficiency. This breakthrough enables the creation of different types of entangled states and facilitates the fusion of multiple pairs into larger groups.
Researchers have developed origami metasurfaces with reconfigurable chiral responses, achieving holographic encryption and multiplexed holographic images. The study demonstrates the effectiveness of this technology in applications such as information security and target interference.
A nonlocal Huygens' meta-lens achieves high-quality-factor spin-multiplexing imaging with a high Q factor of 90. The proposed design enables simultaneous bright-field imaging and edge detection in the near-infrared region, improving imaging quality and accuracy.
Researchers have designed and demonstrated a large aperture, wide field of view eyepiece based on meta-optics, addressing challenges in miniaturizing and enhancing imaging systems. The doublet system employing two layers of meta-optics achieves high-quality imaging up to 60° full field of view.
Researchers propose a method to design ultra-compact on-chip devices that generate pre-designed complex wavefront vector beams under surface wave excitation. Experimental verification in the terahertz frequency range demonstrates outstanding performance and broad application prospects.
A POSTECH research team developed a novel multidimensional sampling theory to overcome limitations of flat optics. Their study identifies constraints of conventional sampling theories and presents an innovative anti-aliasing strategy, significantly enhancing optical performance.
A groundbreaking study introduces a neuro-meta-router that enables dual-mode division and dual-channel mode-division multiplexing, achieving high transmission capacities of up to 100 Gbps. The system demonstrates robustness, minimal crosstalk, and anti-jamming capabilities.
The metaAgent system leverages various sensors to interpret environmental information and independently execute actions, such as real-time user tracking and vital sign monitoring. It utilizes large foundation models to reason and plan tasks without human intervention.
A team of researchers from Singapore University of Technology and Design has developed a new type of metasurface that can generate circularly polarized light without complex optical setups. The metasurface exhibits chirality, enabling it to convert arbitrary optical excitation into circularly polarized light at specific frequency ranges.
Research outlines advancements in controlling semiconductor optoelectronic devices with integrated metasurfaces, improving beam quality and wavefront shaping. Metasurfaces are used to customize electromagnetic waves, enabling compact optical interfaces.
Researchers integrate metasurfaces into devices like LEDs, lasers, and photodetectors to enhance performance, efficiency, and compactness. This progress can lead to advancements in industries such as AR/VR, renewable energy, and healthcare.
Researchers at Seoul National University's Optical Engineering and Quantum Electronics Laboratory developed an optical design technology that dramatically reduces the volume of cameras with a folded lens system utilizing metasurfaces. The new lens system achieves a thickness of 0.7mm, making it suitable for ultra-compact devices such a...
Scientists design a metasurface that can control light waves by varying the incident polarization, enabling the multiplexing of an infinite number of functionalities. This work is published in Opto-Electronic Advance and demonstrates a potential solution for compact optical devices with multiple functionalities.
Researchers at Singapore University of Technology and Design have designed a novel tool inspired by a spiral ladder to control circular polarised light. The bilayer metasurface structure can be tailored to emit waves with specific angles, wavelengths, and polarisation properties.
Researchers at KAIST have developed a Janus metasurface capable of controlling asymmetric light transmission, enabling the creation of two independent optical systems with a single device. This technology also enables optical encryption by generating different images depending on the direction and polarization state of incoming light.
Researchers have developed a new approach to infrared imaging using silicon metasurfaces, enabling broadband imaging across a wide spectrum. This breakthrough technology offers a promising solution for advanced infrared imaging applications, overcoming current limitations of bulky and power-hungry cameras.
Researchers have developed functional interlocking metasurfaces that offer more structural strength and stability than traditional techniques like bolts and adhesives. These metasurfaces can selectively disengage and re-engage on demand while maintaining consistent joint strength.
A team of researchers has developed a compact augmented reality (AR) display that can be integrated into eyeglasses, significantly improving image quality and field of view. The new technology combines two optical technologies to create a high-resolution AR system with minimal distortions.
The team proposes an approach for arbitrarily controlling the polarization direction and phases of reflected waves in linear and nonlinear ways using a stacked programmable metasurface. They achieved high polarization rotation ranges and demonstrated applications in imaging, data storage, and wireless communication.
Scientists create integrated metadevice that combines optical and terahertz metasurfaces, enabling 2-bit terahertz code modulation with ultrafast modulation within 1 ns. The device uses photonic crystals to control its non-radiative loss for ultrafast modulation behavior.
Researchers developed a new type of temperature-adaptive radiative cooling device with improved performance, reducing solar absorptance by 7.54% and increasing emissivity by 13.3%. This advancement holds promise for optimizing energy use and advancing sustainable thermal management solutions.
A team of international researchers has proposed a metasurface capable of efficiently modulating light polarization, achieving notable amplitude (400%) and phase (90°) variations under low-power photoexcitation. This new material enables the transient modification of optical properties in ultrafast timescales.
Researchers have developed a smart leaky-wave antenna system based on spoof surface plasmon polaritons that offers flexible control, wide frequency band and high gain. The system can automatically switch between radiation and non-radiation states and track moving targets in real-time.