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.
A team of scientists developed a new model for high-power terahertz emissions from laser pulses, observing multi-mJ THz emission from 100-TW-laser-driven LWFA. The correlation between electron beam properties and THz output energy reveals that low-energy but high-charge electrons can produce stronger terahertz radiation.
A new SIM algorithm using principal component analysis (PCA-SIM) has been developed to enhance the accuracy and efficiency of real-time live-cell imaging. The algorithm achieves more accurate parameter estimation and superior noise immunity compared to conventional iterative correlation-based approaches.
Scientists discovered strong-field-induced dissociation dynamics beyond the well-accepted resonant one-photon dissociation scenario in H2+ molecules. Rabi oscillations lead to different kinetic energy releases through rolling and looping pathways.
Researchers have developed a novel approach for imaging red blood cells and oxygenation using color TSFG microscopy, enabling label-free visualization of RBCs. The technique provides chemically specific contrast and can measure oxygenation dynamics in vivo, with potential applications in medical technology and biological studies.
Researchers have developed a novel technique using forever diamond to generate ultrashort terahertz pulses. The technique, Raman four-wave mixing, produces fs THz pulses with nearly equal quality to the input pulse, offering tunability through pulse modulation.
The study demonstrates a parametric dispersion model and computational methods to efficiently calibrate the fiber's multispectral transmission matrix, reducing the need for dense spectral measurements. This enables precise control over wavelength-dependent light transmission in multimode fibers.
Scientists have experimentally obtained a 2/3-octave-spanning microcomb in the broadband modulational instability state, featuring a spectrum from 1240 nm to 1950 nm and a mode spacing of 10 GHz. They also observed a novel soliton structure in near-zero anomalous-dispersion regime, dubbed 'anomalous-dispersion based near-zero-dispersio...
The C235 color system uses prime numbers to represent red, green, and blue colors, resulting in a more unified and manageable color framework. This system enables the creation of a compressed color wheel with less than 1.2% compression error rate, allowing for efficient representation of all 256^3 colors.
Researchers have developed a technique for confining light in air using Mie voids, a novel building block that can manipulate and control UV radiation. The discovery has significant implications for optical sensing, trapping, and reprogrammable structures, with potential applications in fields like quantum emitters and metamaterials.
Researchers use red-shifted TERS to track tip-induced molecular configurational changes of a single CO molecule on Cu(100) surface, revealing the weakening of C−O bond and tilting angle.
A team of scientists has developed an automated inspection system for the Five-hundred-meter Aperture Spherical radio Telescope (FAST) reflector surface using drones and computer vision. The system uses deep-learning techniques to detect defects on the surface, enabling timely repair and maintaining optimal dish surface quality.
Scientists developed a novel birefringent hydrogel that can continuously tune DUV light, expanding optics to the DUV region for applications in data storage and semiconductor processing. The 2D cobalt-doped titanate LC enables large magnetic & optical anisotropy and high transmittance.
Researchers have developed a highly-sensitive broadband integrated infrared detector using wafer-scale 2D MoTe₂ layers. The device achieves an ultrabroadband detection range of up to 10.6 μm and a room-temperature specific detectivity of over 10^8 Jones in the mid-infrared region.
Researchers have developed a novel terahertz beam steering system utilizing a liquid crystal elastomer (LCE) metasurface that can actively deflect the direction of the incident wave. The LCE metasurface demonstrates outstanding beam steering performance, with an output angle range of 70° to 25° for frequencies between 0.48 and 1.1 THz.
Weyl semimetals exhibit unusual electronic, magnetic, thermal, and optical properties due to their nontrivial topology. They offer opportunities for practical applications in photonic devices, such as compact optical isolators and higher-order harmonic generation.
Research into on-chip lasers has made significant progress, with advancements in material systems and integration technologies. The integration of compact, energy-efficient, and robust laser sources is key to unlocking the potential of photonic integrated circuits. These developments have far-reaching implications for applications in o...
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.
Researchers discuss the development of liquid crystal-based switchable optical devices for light protection, highlighting their advantages over conventional materials. The review article explores various light modulation principles and proposes strategies for improving light protection in different environments.
Researchers developed a non-invasive imaging technique using photoacoustic computed tomography to visualize the rat heart's anatomy and function. The 3D-PACT platform provides high spatial resolution and captures dynamic changes in cardiac structure, chamber size, myocardial wall thickness, and intracardiac flow.
A team of scientists developed a novel integrated photonic platform for THz photonics, integrating active and passive components on the same semiconductor platform. The platform enables efficient signal processing at THz and RF frequencies, with improved performance in critical figures such as dispersion, RF, and thermal properties.
Scientists developed a method to fabricate white perovskite LEDs using lanthanide ions doped CsPbCl3 nanocrystals, achieving a peak luminance of 1678 cd m^-2 and a maximum external quantum efficiency of 5.4%. The LEDs demonstrate excellent performance among existing white PeNCs LEDs from single chip.
A new MIR all-optical modulator based on an acetylene-filled hollow-core fiber has been developed, enabling gas sensing and medical diagnostics in the mid-infrared range. The device utilizes the photo-thermal effect to achieve phase modulation, allowing for ultra-broadband modulation devices from NIR to MIR.
Scientists have developed a novel fabrication method for large-area and high-precision aspheric micro-lens arrays via single beam exposure DLWL, enabling high flexibility in design. The approach produces AMLA with dimensions of 30 × 30 mm² within 8 hours, exceeding 100 mm²/h writing speed.
A team of scientists has developed a novel method to demonstrate a high-purity longitudinal femtosecond laser field, enabling the creation of 10nm features in sapphire with unprecedented resolution. The technique uses an 800nm wavelength femtosecond laser source and spatial light modulators to produce a high-quality annular beam with r...
Scientists have developed a new composite material that exhibits excellent gamma-ray shielding performance, 10 times higher than epoxy. Crystal plane engineering plays a crucial role in regulating the electron density of MAPbI3/epoxy composites, improving their ability to absorb radiation.
Researchers developed a quantum receiver that uses adaptive learning to improve signal decoding in noisy environments. The upgraded receiver achieved record-high efficiency and robust interference visibility, with improved performance compared to conventional designs.
Researchers investigate generating and performing terahertz structured light using flat photonic elements for object inspection and recognition tasks. Flat photonic elements offer advantages in creating non-diffracting beams that preserve internal structure, enabling high-resolution imaging with minimal background signal.
Researchers developed a noncontact method to characterize Si surface properties, including surface potential and charge density. The technique uses terahertz emission spectroscopy and offers rapid, sensitive, and semiquantitative characterization of Si surfaces.
Scientists have discovered that breaking symmetries in nanophotonic materials can control thermal emission, enabling narrowband, directional, or polarized emissions. This can improve the efficiency of energy conversion and harvesting applications by exploiting the magneto-optical effect and spatiotemporal modulation.
Researchers establish a relation between angular diversity and spatial footprint using a transmission matrix framework for wide-FOV metalenses. A thickness bound is determined based on diffraction-limited focusing quality, allowing for compact systems with enhanced imaging capabilities.
Scientists have demonstrated mechanical bound states in the continuum (BICs) in an individual optomechanical microresonator, reducing energy dissipation and enhancing performance. BICs exist for a wide range of supporting structure geometries, enabling versatile applications in micro/nanoelectromechanical systems.
VEViD, a physics-based algorithm, corrects poor illumination and low contrast in images captured in low-light conditions. The algorithm improves visual quality for human perception and increases accuracy of computer vision algorithms.
Researchers discovered that topological insulators outperform graphene in generating terahertz electromagnetic waves, enabling efficient nonlinear terahertz photonics technology. The study achieved orders of magnitude improvement in output power approaching the milliwatt regime.
A team of scientists has developed optically-generated focused ultrasound (OFUS) for non-invasive brain stimulation with ultrahigh precision, surpassing the reach of traditional transcranial focused ultrasound (tFUS). OFUS uses a soft optoacoustic pad to generate an ultrasound pulse with a spatial resolution of 0.1 mm.
A team of scientists developed a new model to overcome optical measurement instruments' diffraction effects, enabling local improvement of lateral resolution and magnification enhancement. The model reliably reproduces measurement results and demonstrates the relative improvement of lateral resolution.
Researchers have developed a semi-nonlinear etchless lithium niobate waveguide that harnesses bound states in the continuum to achieve efficient second-harmonic generation. The device boasts low propagation losses and large nonlinear modal overlap, enabling high conversion efficiency.
Researchers have developed a unique anapole probe to measure photonic spin structures, enabling advancements in spin photonics. The probe can characterize topological spin properties associated with magnetic fields, opening doors for applications like data storage and metrology.
A team of scientists developed a near-infrared spectropolarimeter based on an electrically-tunable liquid crystal metasurface. The system simultaneously measures polarization and spectral information using a tunable metasurface with high-quality-factor guided-mode resonances combined with a computational reconstruction algorithm.
A new common path interferometer combining Fizeau and Twyman-Green principles has been developed to measure complex precision optics with improved accuracy. The Tilted Wave Interferometer overcomes reference wave problems, enhancing flexibility and reducing measurement time.
Scientists demonstrate dynamic scalar optical hopfions, proposing a method to encode and transfer topological information. The discovery may spur interest in exploring novel methods for light-matter interaction and optical manipulation.
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...
Researchers propose innovative solution to identify physical items uniquely and securely. Cholesteric spherical reflectors (CSRs) are used to create 'fingerprints' on surfaces, making them detectable by robots and AR devices but invisible to humans.
Researchers have developed a method to manufacture large SiC mirrors with high accuracy, enabling the creation of the world's largest aspherical mirror. The team successfully polished a 4.03m diameter SiC mirror using a home-built MRF24 polishing machine and proposed a PVD cladding process to improve substrate surface quality.
Scientists developed a method to introduce carbonized polymer dots into quasi-2D perovskite photodetectors, improving their flexible stability without losing photo-response. The devices showed lower dark current and detectable light intensity, paving the way for high-performance flexible optoelectronic devices.
Researchers develop single metasurface to realize color-selective 3D polarization structures, offering unprecedented control over polarization with color information in 3D space. The discovery has potential applications in vector beam generation, virtual reality, and information security.
Researchers have developed bifacial monolithic all-perovskite tandem solar cells with significantly higher output power potential. The design uses transparent conductive oxide as rear electrodes, enabling the harvest of light on both sides of the device.
Researchers have demonstrated the first electrically pumped QD laser grown by molecular beam epitaxy in narrow oxide pockets patterned on CMOS compatible Si substrate. The devices show improved reliability and potentially exceed performance of previously demonstrated lasers.
Researchers uncover hidden physics in electromagnetic optical forces, introducing complex Maxwell stress tensor theorem, revealing reactive strength of orbital momentum and imaginary Lorentz force.
Researchers have created III-nitride/MoSx core-shell nanostructures with negative and positive photoresponsivity under different wavelengths, demonstrating a new universal photodetector architecture. This breakthrough enables spectrally sensitive photoelectrochemical photodetectors for various applications.