Scientists overcome barriers in conventional LED technology by creating III-nitride submicron-scale green µLEDs with a bottom-up approach. The devices feature arrays of nanowires with a core-shell multiple-quantum-well structure, which alleviate color instability and maintain peak wavelength stability despite changes in current injection.
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.
Scientists developed a new method using surface-enhanced Raman scattering (SERS) to monitor the effects of photodynamic therapy on tumor cells. The method, which involves Au@CDs cascade nanozymes, enables real-time monitoring of reactive oxygen species (ROS) levels in the tumor microenvironment.
Researchers developed a new technique to measure geometric phases in thermal atoms, exploiting superradiance lattices. By analyzing energy spectra and anti-crossings, they reconstructed the Zak phase of energy bands.
Researchers developed an innovative technology using Lanthanide-doped EV-targeting Nanoscopic Signal-amplifiers to super-resolve single small extracellular vesicles. This enables ultra-sensitivity in the quantitative detection of tumor-secreted nanoparticles, promoting early-stage cancer diagnosis and treatment decisions.
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.
A new study explores the use of light radiation to disrupt viral functionalities and eliminate viruses, including HIV, influenza, and SARS-CoV-2. The researchers reviewed rapid advances in physical irradiation methods for viral inactivation, showcasing recent validation experiments toward efficient viral elimination.
Researchers have developed a quasi-3D plasmonic structure on fiber tips, enabling high-sensitivity detection of refractive index changes and physical adsorption. The device's noise-equivalent detection limit reaches 10^-7 RIU, outperforming existing sensors.
A team of scientists has developed a novel fabrication method for aspheric micro-lens arrays, enabling large-area and high-precision creation. The single beam exposure DLWL technology satisfies the high optical performance requirements.
Researchers have developed a new method for detecting ultrafast electronic processes using entangled photons, enabling high-resolution Raman spectroscopy. The technique overcomes the diffraction limit and allows for sensitive detection of molecular excitations on the femtosecond scale.
Researchers developed lanthanide-doped fluoride nanoparticles that exhibit superior photostability, low toxicity and convenient device processability. These particles also show promising applications in biomedicine and optical information encoding, enabling broadband detection in theory.
Researchers have developed an ultrahigh-efficiency and low-noise scheme of quasi-parametric chirped-pulse amplification (QPCPA), achieving 56% energy efficiency for signal conversion. This process greatly suppresses parametric superfluorescence noise, enabling high repetition-rate operation and potential peak powers over 50 PW.
Researchers develop a novel method to generate FMCWs and control their spatial propagation behaviors simultaneously using a reflection-type STCM. The proposed method reduces system complexity and cost compared to traditional FMCW signal generation methods.
The article discusses recent advances in self-assembled liquid crystal architectures for soft matter photonics, including smart displays, optical imaging, and light field modulation devices. The review highlights the potential of these materials for broadening knowledge and promoting diverse photonic applications.
Scientists have developed a new chip that can transfer different optical states to switch light flows using supersymmetry. The approach enables broadband continuous transformation of light spatial characteristics, opening up avenues for advanced photonic functionalities.
Researchers have developed a sensitive setup for detecting luminescence spectra in rare-earth doped crystals, enabling remote measurements of magnetic fields with high precision. The detection capabilities allow for accurate measurement of magnetic fields down to 17 μT and direction determination.
Rare-earth based materials are used for high-resolution brain imaging and efficient diagnosis of brain diseases through magnetic resonance imaging, computed tomography imaging, and fluorescence imaging technologies. Additionally, they can be used for targeted therapy, overcoming the blood-brain barrier.
Researchers have discovered a nonlocal effect of anion segregation in mixed halide perovskite alloys, leading to the formation of a ring-shaped structure with potential applications for direct light charging. This phenomenon may not be an adverse effect but rather a useful mechanism for energy storage.
A new approach to brain imaging has been developed that allows for the observation of brain structures and functions without removing any part of the skull. This technique, called Through-Intact-Skull (TIS) window, enables continuous cortical monitoring at high resolution and on a centimetre-scale.
Researchers developed a method to integrate plasmonic metasurfaces on optical fibre tips, enabling advanced applications like planar waveshaping and super-resolution imaging. The new metafibers provide 'all-in-fibers' optical systems for sensing, imaging, communications, and more.
Researchers have developed a method to increase precision in luminescent nanothermometers using dimensionality reduction. By automating the selection of a thermometric parameter, they achieve thermometric approaches with precision below 0.1 degrees Celsius.
The study proposes merging bound states in continuum (BICs) using higher topological charges, significantly enhancing Q factors and suppressing scattering loss. The approach enables steerable BICs with designed momentum, improving performance for direction-related applications.
Dielectric metalenses have made significant progress in compact imaging systems, offering aberration-correction and dispersion-engineering capabilities. However, challenges such as phase discretization, diffraction constraints, and crosstalk among sub-units need to be addressed for practical development.
Researchers have developed a fibre-optic transmission system that integrates SDM, PDM, and DWDM over a 34-km long fibre, achieving a raw capacity of 1.223 Pb/s with a spectral efficiency of 156.8 bit/s/Hz. The system utilizes OAM modes to reduce MIMO complexity, enabling low power consumption and scalability.
A new study demonstrates bound vortex light on optical chips by simulating gauge fields of cosmic strings. The research team created a deformed photonic graphene inspired by cosmic strings, which can generate and transport optical vortices and control photon orbital angular momentum.
Researchers developed a technique for controlling ENZ media by introducing multiple dielectric rods, called photonic dopants. This allows for independent control of responses at specific frequencies, enabling applications such as optical tagging and digitally reconfigurable filters.
Researchers experimentally verified the generalized eigenstate thermalization hypothesis (GETH) using a quantum-walk platform. They demonstrated that any superposition state within a small energy-momentum window relaxes to the same reduced state, independent of the initial state.
Researchers develop new scheme to measure tunneling time without theoretical calculation, finding ionization times decrease with increasing electron energy. The technique provides insight into fundamental dynamics of laser-matter interaction and potential retrieval of geometrical information.
Researchers developed a novel approach to generate high-speed random numbers using self-chaotic microcavity lasers. The study achieved physical random numbers at 10 Gb/s, paving the way for small and robust random signal sources.
A team of scientists developed RASTMIN, a method that achieves equivalent resolution to MINFLUX but can be implemented in standard confocal microscopes. RASTMIN enables nanometre resolution and can be used with existing laser-scanning microscopes.
Researchers have developed a novel neural network architecture that achieves unprecedented generalization to unseen sample types, outperforming classical algorithms and state-of-the-art models. The Fourier Imager Network (FIN) demonstrates superior computational speed in phase retrieval and holographic image reconstruction tasks.
Researchers develop pulsed laser-assisted synthetic route to create metal nanoparticles with high purity, eliminating toxic by-products and requiring less energy and time. This technique enables the production of non-toxic, highly functional nanomaterials for various energy and environmental applications.
A new AI-designed camera can only record objects of interest, erasing others through light diffraction, maximizing privacy protection. The camera is data- and energy-efficient, making it suitable for power-limited imaging applications.
A new approach to studying cell binding has been developed, allowing for precise measurement of adhesion forces in various conditions. This technique, scRAFA, enables label-free and sub-cellular-resolution quantification of adhesion, with applications in fields such as cell biology, immunotherapy, and urinary tract infection.
A new AI-rendering system leverages layered depth image representation to create high-quality phase-only 3D holograms in real-time on consumer desktops and cellphones. The system corrects vision aberrations and produces realistic depth boundaries, making holographic displays more accessible.
Researchers have developed a new technology named SPIM-WGs, which efficiently fabricates optical waveguides with continuously variable 3D cross-sections. This allows for superior performance and new features, paving the way for future photonic and quantum chips.
Scientists have developed a novel method to probe the longitudinal distribution of light-matter interaction in gap-mode plasmonic nanocavities. By embedding monolayer MoS2 as an emitter in the nanogap, they achieve spatial resolution of ~1 nm and observe significant photoluminescence enhancement factors up to 2800 times.
Researchers developed an optical fiber sensor to measure local temperatures on metal surfaces during photo-electrocatalytic reactions. The sensor achieved a thermal resolution of 0.1°C and temporal resolution of 0.1 seconds, revealing correlations between light-induced heating and catalytic activities.
Researchers have developed a method to generate and control mid-infrared hyperbolic polariton vortices at the nanoscale, enabling new opportunities for super-resolution sensing, imaging, and communication systems. The study uses hexagonal boron nitride as a host material and achieves broad reconfigurability of topological charges.
A team of scientists has developed a reconfigurable intelligent surface (RIS) called 'Intelligent Walls' for controlling electromagnetic waves to monitor human activities remotely. The technology harnesses ambient signals and can track activities like walking, sitting, and standing with high resolution.
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.
Researchers have developed an experimental platform to demonstrate the quantum fault-tolerant threshold, a crucial concept in quantum computing. The team observed the error rate threshold using two entangled photons and confirmed its existence through single-qubit and two-qubit operations.
Researchers review current progress on DUV NLO crystals, discussing key performance criteria, material development, and design strategies to surpass existing KBBF crystals. They propose rational tuning of interlayer cations as an effective strategy to improve DUV NLO performance.
A team of scientists has proposed a new concept of 'superabsorption' to solve the difficulty of realizing single-mode lasers in microscale cavities. They designed an n-PtNPs@ZnO:Ga MW/Pt/MgO/p-GaN heterojunction with excellent lasing performance and single-mode operation.
Researchers have developed a new algorithm to reconstruct incident light field from far-field speckles, enabling three-dimensional quantitative phase imaging with nanoscale axial sensitivity and lateral resolution. This technology paves the way for in vivo label-free characterization of cells and tissue with minimal invasiveness.
Researchers demonstrate a fibre-optic transmission system using OAM modes, achieving a raw capacity of 1.223 Pb/s and spectral efficiency of 156.8 bit/s/Hz. The system uses a 34-km long 7-core ring core fibre with low MIMO complexity.
Researchers have created a tunable liquid crystal grating based holographic 3D display system that achieves a wide viewing angle of 57.4°, seven times greater than conventional systems. The system can also enlarge the size of holographic images by up to 4.2 times and is simple to operate.
A joint team of scientists developed a terahertz spatial light modulator based on metasurface absorber and dual-frequency liquid crystal, enabling dual-color THz CS imaging. The auto-calibrated CS algorithm improves image fidelity, while frequency-switching enables Hadamard masks with negative element values.
Researchers develop BPAWR-SACM process to generate designable spatially coherent wide-band radiation without resonant cavity. The technique amplifies centered non-absorption band with gain up to 26.02 dB, enabling frequency modulation in visible light range.
Researchers present a broad overview of modern computer-generated holography (CGH) algorithms, acceleration techniques, and dedicated hardware solutions. They classify CGH algorithms based on discretization methods and discuss visual quality assessment to optimize perceptual quality.