Articles tagged with Optoelectronics
Researchers at the University of Cambridge have developed a new method for making smart fabrics that is cheaper and more sustainable. They achieved this by weaving electronic components into conventional textiles using industrial looms, breaking away from traditional specialized microelectronic fabrication facilities.
The study reveals that the stability of Dion-Jacobson 2D perovskites is determined by the rigidity of organic diammonium cations. This mechanism allows for intercoordination between organic and inorganic components, enabling a stabilized state. The findings may provide guidance for manipulating the stability of DJ 2D perovskites.
Researchers have presented an overview of recent progress in moiré photonics and optoelectronics, highlighting the emergence of novel quantum phenomena and their potential applications. Moiré superlattices introduce a new paradigm for engineering band structures and exotic quantum states.
Researchers at UNIGE have designed a quantum material that can be controlled by curving space, allowing for ultra-fast electromagnetic signal processing and potential applications in high-speed communication systems. The material's unique properties enable the creation of new sensors and potentially unlock new avenues in exploration.
Scientists at EPFL and IBM have developed a new type of laser using lithium niobate, enabling precise distance measurements in LiDAR applications. The hybrid integrated tunable laser offers low frequency noise and fast wavelength tuning.
The SF State team has created a broadband nanoscale photodetector using bismuth-MoS2 materials, showing improved sensitivity in the UV range and responsiveness over a wide wavelength range. The device is also fast, working at around 10 kilohertz and potentially scalable to megahertz or gigahertz speeds.
Scientists develop a non-volatile photo-memristor with tunable conductance and reconfigurable photoresponse, enabling all-in-one sensing-memory-computing approaches for neuromorphic vision. The device can implement computationally complete logic with photoresponse-stateful operations.
The study uses artificial intelligence to generate new molecules with optimized properties, applicable to various industries. The method enables finding Pareto-optimal solutions, leading to more efficient materials for optoelectronics, solar energy, and other fields.
Researchers have observed exciton quasiparticles confined in atomically thin materials, opening paths to controlling excitons for quantum and optolectronic applications. Custom-built materials can now be designed to confine and manipulate excitons.
Scientists at Tokyo Institute of Technology developed a new synthesis method that allows the introduction of multiple B- and Si-containing groups into aromatic nitrogen heterocycles. This breakthrough unlocks the creation of versatile platforms for organic compounds relevant to medicinal chemistry. The approach enables the production o...
A Chinese research team has successfully synthesized a stable polymer with a nickel backbone that exhibits conductive, thermally stable and interesting optoelectronic properties. The new material can be processed in solution and demonstrates strong length-dependent light absorption with narrow band gaps.
A new method for measuring bifacial solar panel performance has been developed by the University of Ottawa SUNLAB team. The study proposes a characterization method that considers external effects of ground cover like snow, grass, and soil, providing a way to accurately test panel performance indoors.
Researchers developed a self-powered nanowire sensor that can detect nitrogen dioxide in the air without power source. The sensor has potential applications in environmental monitoring, healthcare, and industrial safety.
Researchers provide a comprehensive overview of metal halide perovskites' optoelectronic traits and their potential to design multifunctional devices. The study highlights the unique characteristics of MHPs, including tunable optical and electronic features, making them suitable for various applications.
Scientists have created a novel approach to produce phase-pure quasi-2D Ruddlesden–Popper perovskites, enabling highly efficient and spectrally stable deep-blue-emissive perovskite LEDs. The rapid crystallization method yields high-performance devices with an emission wavelength centered at 437 nm.
Meta-Optics is transforming science and technology, enabling novel applications in the Internet of Things, autonomous cars, wearable devices, and augmented reality. However, challenges remain to be solved, such as scaling up industrial processes and creating tunable metamaterials.
Researchers at EPFL's School of Basic Sciences created a large-scale, configurable superconducting circuit optomechanical lattice to simulate graphene lattices. The device exhibits non-trivial topological edge states and can be used to study many-body physics.
A team of researchers from Lithuania has developed organic dyes showing a particularly long afterglow after being excited by light. The new material exhibits persistent thermally activated delayed fluorescence and long phosphorescence at room temperature, enabling color-tunable room-temperature organic afterglow.
Researchers at the University of Tsukuba have developed an optoelectronic resonator that enhances the sensitivity of an electron pulse detector, allowing for ultrafast electronic characterization of proteins or materials. This breakthrough may aid in the study of biomolecules and industrial materials.
Researchers developed a simple and accurate method for markerless gait analysis, combining RGB camera-based pose estimation with IMU sensor data. The new technique outperformed existing methods in measuring gait parameters and joint angles, showing significant promise for clinical settings and diverse applications.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed an integrated electro-optic modulator that can efficiently change the frequency and bandwidth of single photons on a chip. This device could be used for more advanced quantum computing and quantum networks.
Scientists successfully transmit and switch 15-mode multiplexed signals over a 6.1 km long multi-mode fiber ring in Italy, demonstrating a new approach to increasing fiber network capacity. This achievement is significant for future communication systems beyond 5G.
Researchers demonstrate world's first 55-mode transmission at 1.53 petabits per second, outperforming previous records by three times in spectral efficiency. The technology holds promise for future high-capacity backbone networks and the development of Beyond 5G infrastructure.
Researchers at TU Wien have developed a new method for creating high-quality contacts between metal and semiconductor materials, enabling faster and more efficient computer chips. The technology uses crystalline aluminium and a sophisticated silicon-germanium layer system to overcome the problem of oxygen contamination.
Researchers developed flexible thermochromic fibers that can change color and pattern in response to environmental signals. The fibers were used to create a dynamic colored display fabric with QR code, which was successfully recognized, enabling applications in social contact, information security, and wearable human-computer interaction.
Researchers developed high-capacity free-space optical links using unipolar quantum optoelectronic devices, achieving unprecedented data rates of up to 30 Gbit/s at 31-meter distances. The system's performance is resistant to weather conditions and showcases potential for fast, long-range optical links.
Researchers have successfully created a highly conductive metamaterial using self-organized quantum dots, maintaining their optical properties while displaying the highest electron mobility reported for quantum dot assemblies. This breakthrough paves the way for new generation of opto-electronic applications.
A team of scientists has developed a novel photonic neural network accelerator based on a non-volatile Opto-Resistive RAM Switch, achieving programmable nonlinear activation functions. The accelerator demonstrates superior performance in MNIST handwritten digit recognition tasks, with accuracy rates up to 91.6%, reduced power consumpti...
A team at KAUST has created an ultrathin dielectric metalens that improves focusing capabilities and can be scaled down for integration with photonics equipment. The metalens, designed from a custom array of TiO2 nanopillars atop a DBR, offers negligible intrinsic loss and easy fabrication.
Scientists observed fine-scale exciton dynamics in atomically thin layered materials, confirming theoretical predictions. The discovery could help replace charge transfer for faster and more reliable optical communications.
Kyusang Lee's new sensor system uses artificial intelligence to process different types of signals, mimicking human biology, and can detect viruses. The system meets challenges of data bottlenecks, energy consumption, and data protection, making it a breakthrough in the Internet of Things.
Researchers have developed a new type of microcomb that generates dissipative solitons with flat-top spectral shape, enabling high-capacity optical communication. The new design also achieves self-starting operation, high mode efficiency, and low output power, making it suitable for real-world applications.
Researchers developed a smart mouthguard that translates complex bite patterns into instructions to control devices such as computers, smartphones and wheelchairs. The device achieves 98% accuracy and has the potential to support individuals with limited dexterity or neurological disorders.
Scientists have developed a solution to communication challenges in neuromorphic chips using superconducting devices. This allows artificial neural systems to operate 100,000 times faster than the human brain, with potential applications in industrial control and human conversations.
Scientists have discovered a way to use nanoscale, low-power laser beams to precisely control magnetism within two-dimensional semiconductors. This technique has implications for studying the emergence of correlated phases and designing new optoelectronic and spintronic devices.
Researchers designed an optical black hole cavity using transformation optics, eliminating radiation loss in WGM cavities. The conformal optical black hole (OBH) cavity realizes infinite radiation Q-factor and enhances field confinement, paving the way for surface field manipulation.
Researchers at Queen Mary University of London have invented a new application of perovskites as single-crystal optical fibers with exceptional stability, efficiency, and durability. These high-performance fibers could revolutionize broadband delivery, improve medical imaging, and even enable solar-powered clothing.
Researchers have demonstrated a new visible light communication system that uses a single optical path to create a multi-channel communication link over the air. The system, based on devices called multiple quantum well (MQW) III-nitride diodes, can save half the channel space, cost and power by using a single link.
Researchers have developed highly sensitive and mass producible organic photodetectors that can detect weak signals. The new photodetectors exhibited a detectivity comparable to those of conventional silicon photodiodes, operating stably under temperatures above 150 °C.
Researchers have designed a new online/offline tag generation algorithm to improve preprocessing efficiency and protect medical data privacy. The proposed scheme achieves better auditing performance than previous schemes, addressing the contradiction between high real-time requirements and limited computing power in HealthIIoT devices.
A research group from Tokyo University of Science has discovered molecular features that govern the filling process at nanoscales, enabling finer resolutions in ultraviolet nanoimprint lithography. The findings provide valuable insights for guiding the selection and design of optimized resists for sub-10 nm resolution.
Researchers at the University of Cambridge have developed a smart lighting system based on quantum dots, which can dynamically reproduce daylight conditions in a single light. The system achieves excellent color rendering, a wider operating range than current technology, and a wide spectrum of white light customization.
Researchers from GIST have developed an amphibious artificial vision system with a panoramic field-of-view based on the Fiddler crab's eye structure. The system overcomes limitations of current artificial visions, enabling imaging in both aquatic and terrestrial environments.
Researchers from Tokyo University of Science create new method for producing heterolayer coordination nanosheets with improved properties and controllability. The study expands the diversity of 2D materials, enabling potential applications in optoelectronics and renewable energy.
The researchers achieved ultranarrow linewidths and wavelength tunability in the lithium niobate microlaser, enabling applications like lidar and metrology. The single-mode lasing is realized through simultaneous excitation of high-Q polygon modes at both pump and laser wavelengths.
A research team from Japan has developed a stable TERS system that enables characterization of defect analysis in large-sized WS2 layers at high pixel resolution. The team successfully imaged nanoscale defects over a period of 6 hours in a micrometer-sized WS2 film without significant signal loss.
Researchers demonstrate a new platform for guiding compressed mid-infrared light waves in ultra-thin van der Waals crystals, enabling strong light-matter interactions and improved detection limits. The use of atomically-smooth gold crystals provides a low-loss environment for the propagation of phonon-polaritons.
Researchers at NICT developed an organic electro-optic polymer for visible light, significantly improving efficiency and miniaturization. The new modulator has lower absorption loss and higher electro-optic coefficient in visible light compared to conventional optical modulators.
Researchers have designed an energy-efficient silicon-based non-volatile switch that manipulates light to control information flow in data centers. This technology reduces energy needs by 70-fold compared to traditional switches, making data centers more environmentally friendly.
Photoinduced large polaron transport and dynamics in organic-inorganic hybrid lead halide perovskite have been studied using terahertz probes. The researchers found that the formation of large polarons protects charge carriers from scattering with grain boundaries or defects, explaining the long lifetime of photoconductivity.
A team of researchers at Osaka University measured the photovoltaic properties of antimony sulfiodide:sulfide devices and discovered a novel effect. They found that changing the color of incident light from visible to ultraviolet induced a reversible change in output voltage, while leaving current unchanged.
Lithium niobate photonics has developed rapidly, enabling compact devices with high performance. Thin film lithium niobate (TFLN) structures have shown significant improvements in refractive index contrast, paving the way for more integrated photonic devices.
A team of researchers at the University of Tsukuba has developed a new method for measuring tiny changes in magnetic fields using nitrogen-vacancy defects in diamonds. This breakthrough could lead to more accurate quantum sensors and spintronic computers, enabling precise monitoring of temperature, magnetic, and electric fields.
Researchers successfully developed neutron-transmutation doping for 2D layered Indium Selenide (InSe) phototransistors, narrowing the bandgap and increasing electron mobility. The technique improved responsivity by about fifty times, opening up new opportunities in materials-based technologies.
A research group at South-Central MinZu University has achieved the largest complete photonic bandgap (CPBG) of 5.62% in a silicon nitride slab, significantly enhancing nonlinearity and enabling polarization multiplexing. The breakthrough could lead to the development of high-performance CPBG devices in SiN slabs.
Researchers from NICT demonstrated a record-breaking 1.02 petabit per second transmission capacity in a 4-core MCF with a standard 0.125 mm cladding diameter, exceeding 20 THz optical bandwidth with 801 parallel wavelength channels.
Researchers have successfully synthesized a new type of carbon allotrope called holey graphyne, which has semiconductor properties and can be used in various applications. The material was created using a bottom-up approach and consists of alternately linked benzene rings and C≡C bonds.
Researchers developed efficient metal-free polymeric scintillators for high-resolution X-ray imaging, outperforming conventional anthracene-based scintillators. The polymers exhibit multicolor radioluminescence and high photostability, enabling applications in radiation detection, medical diagnosis, and security inspection.
A research team developed a new approach to generate deep-ultraviolet lasing through a 'domino upconversion' process of nanoparticles using near-infrared light. This breakthrough enables the construction of miniaturised high energy lasers for bio-detection and photonic devices.
Researchers develop novel broadband photodetectors expanding from deep ultraviolet to near infrared using CsPbCl3:Cer:Mn-LC, iodine-based perovskite quantum dots, and organic bulk heterojunction. The devices exhibit excellent performances with a wide response range, high responsivity, and detectivity, especially in UV and NIR regions.