Researchers developed a method to detect topological phase using quench dynamics and synthetic frequency dimension, simplifying the characterization of non-equilibrium states. The study proposes a new approach for performing dynamical characterization of topological quantum phases in different models.
A team of scientists developed a photon-counting distributed free-space spectroscopy (PDFS) to analyze atmospheric gas composition. The method provides range-resolved spectra of CO2 and HDO over 6 km, offering insights into chemical processes in the atmosphere.
Researchers reviewed the progress of Single-Emissive Layer White Light Emitting Diodes (SEL-WLEDs), highlighting their advantages in low cost, simple process, and material stability. The study proposes perovskite materials as a feasible path to commercialization.
A team of scientists from Germany develops a novel all-fiber based endoscopic set-up for multimodal non-linear endoscopy, allowing for the reliable assessment of tissue and successful surgery. The probe enables label-free tissue diagnostics, including tumor margin detection, and has the potential to improve patient care and reduce costs.
A team of researchers has discovered radiationless anapole states in on-chip photonics, which enable the creation of highly sensitive biosensors and nonlinear signal processing systems. The discovery allows for tunability of anapole states within a wide wavelength range, with enhanced energy concentration inside nanoparticles.
A team developed a smart microscope that adapts to curved biological surfaces, reducing irradiation by up to 100 times. This breakthrough technology enables long-term imaging of fragile objects like embryos and organoids.
Researchers at Purdue University developed a new method for rapid, continuous projection multi-photon 3D printing, allowing for the creation of complex structures in under a second. This technique uses spatiotemporal focusing to print entire layers instantly, enabling the production of smooth and complex shapes without layering artifacts.
Researchers have developed an all-optical processor that uses spatially-engineered diffractive surfaces to compute arbitrary linear transforms, eliminating the need for digital processors. The processing speed is comparable to light propagation, and the system consumes no power except for illumination.
A new platform enables simultaneous meeting of three critical requirements: low defect density, large dimension, and efficient light coupling with Si-waveguides. The monolithic InP/SOI platform features sub-micron wires and membranes grown using lateral aspect ratio trapping.
Researchers developed a unified framework for high-quality NLOS reconstructions using Signal-object collaborative regularization (SOCR) method. The technique recovers location, shape, albedo, and normal of targets with clear local structures, sharp boundaries, and little noise, even in heavy noise conditions.
The study proposes a new fluorescence imaging window, extending the near-infrared range to improve image quality. Simulation results show that using PbS/CdS core-shell quantum dots with specific peak emission wavelengths can reduce background attenuation and enhance image clarity.
A new metrology instrument and techniques have been developed to characterize strongly curved high-quality X-ray mirrors, enabling unprecedented accuracy. The technique, known as speckle angular measurement (SAM), can push the precision of slope error measurements down to 20nrad rms.
Researchers propose a novel key distribution scheme based on mode-shift keying chaos synchronization to overcome limitations of laser transition time, achieving 0.7503 Gbit/s rate with high security. The method uses Fabry-Perot lasers and random drive source to generate chaotic waveforms, which are then quantized to produce random bits.
Researchers found that modulated 1070-nm light improved AD mice' memory and cognitive skills by reducing A± plaque buildup and promoting microglia responses. This non-invasive therapy may offer a novel approach to AD treatment.
Scientists propose Source-independent Radiometric Calibration (SIRC) for high-accuracy infrared remote sensing, overcoming limitations of traditional methods. SIRC requires only temperature information and modeling to implement calibration, providing a more reliable and traceable way.
A team of scientists developed a simple-to-implement plasmonic optical fiber biosensing platform to detect estrogenic endocrine disruptors. The platform can detect EEs down to 1.5 ng L^-1 estradiol equivalent concentration, the lowest limit of detection for any estrogen receptors-based detection reported to date.
Digital holography enhances non-contact, precise, and dynamic measurements for complex amplitude analysis. Common-path configurations share paths between object and reference beams, improving temporal stability.
Researchers have developed a new type of photodetector using MXene and GaN materials, showing improved responsivity, dark current, and noise in the blue-green light spectrum. The use of MXene-GaN van der Waals interfaces reduces defect states and improves the device's performance.
A new quantum secure direct communication (QSDC) network has been demonstrated by a team of scientists, enabling 15 users to communicate securely over long distances. The network uses time-energy entanglement and sum-frequency generation (SFG), achieving a fidelity of greater than 95% for entangled states shared between users.
A team of scientists demonstrated an optical localization-induced nonlinear competition mechanism to control laser-induced periodic surface structuring. The method produces large-scale high-quality thin-film nanogratings by optimizing laser pulse energy and using laser direct writing.
Researchers develop a theory and experimentally demonstrate micro-scale opto-thermo-mechanical actuation using nanosecond laser pulses, enabling sub-nanometer resolution and controllable motion. The technique has potential applications in lab-on-a-chip technologies and optical modulation.
A novel fiber-tip-polymer clamped-beam probe micro-force sensor was developed using femtosecond-laser-induced two-photon polymerization technique. The sensor exhibited an ultrahigh force sensitivity of 1.51 nm/μN and a detection limit of 54.9 nN, opening avenues for high-precision biomedical and material science examination.
Polarisation optics offers sensitive sub-cellular structure analysis and compatible imaging/sensing for in vivo applications. The Stokes-Mueller formalism and Mueller matrix describe polarisation states, enabling various measurement approaches and information extraction techniques.
Researchers developed phyllotaxis-alike vortex nanosieves that can generate multiple optical vortices within a single nano-device, enabling compact and efficient multiplexing of orbital angular momentum. The design uses judiciously arranged nanoholes on metal films to create multiple spiral patterns, each contributing to a specific OAM...
Scientists discovered hot-band absorption (HBA) in FDA-approved Indocyanine Green, enabling advanced anti-Stokes fluorescence bioimaging. HBA-based ASF has high thermal sensitivity and allows for IR perception, making it suitable for applications such as tumor detection and blood vessel imaging.
Researchers have developed new strategies to optimize multiscale design of macro optics to micro/nanophotonics, enhancing the spectral sensitivity of surface-enhanced Raman and infrared absorption spectroscopies. This enables effective signal detection even for molecules with small scattering or absorption cross-sections.
A team of scientists has developed an efficient large-scale phase retrieval technique for realizing high-fidelity complex-domain phase imaging. The new method combines conventional optimization algorithms with deep learning techniques, achieving robustness to measurement noise and strong generalization. By comparing the reported method...
The study reveals that corner states can be embedded into bulk states while being decoupled, forming bound states in the continuum. This discovery extends conventional topological BICs into higher-order cases, enabling robust and localized states in bulk spectra.
Researchers investigate using classical thermal light sources for quantum applications, including teleportation and novel imaging. A new protocol is proposed to exploit the non-entangled yet non-classical state of two-photon OAM for high-dimensional image transmission.
A team of scientists developed a novel microcavity sensing technology to study the transition dynamics of poly(N-isopropylacrylamide) using optofluidic microcavities. The self-referencing method decouples multiple effects involved in physical/chemical reactions, allowing for detection of complex processes.
Biophotonic probes utilize biological entities for sensitive detection of biological signals and precise imaging of cellular structures. Optical waveguides play a crucial role in transporting light into deep tissues, while biolenses enable noninvasive screening tools for blood-related disorders.
Scientists have discovered a photonic realization of type-II Dirac nodal line semimetal with ring-shaped four-fold band degeneracy. The material exhibits a double-bowl state comprising two sets of almost degenerate perpendicularly polarized surface states, which is distinct from other photonic systems.
A novel engineered tunneling layer with enhanced impact ionization improves detection capabilities in graphene/insulator/silicon heterostructure photodetectors. The technique achieves a champion responsivity of ~1.03 AW-1 at a reverse bias of -10 V, showing great potential applications in sensing and communications.
Researchers investigated thermally activated delayed fluorescence (TADF) with weak light-matter coupling to improve OLED color purity. Using a Fabry-Pérot cavity, they found that weak coupling enhances emission spectra and increases light extraction efficiency.
Researchers developed a high-throughput Fourier-optics-based angle-resolved imaging spectroscopy system with robust neural network-based algorithms to solve inverse scattering problems. The system achieved a strong linear correlation between the reconstructed geometric parameters and atomic force microscopy measurements.
Scientists developed a new method for storing and encrypting data in 3D space using photo-modulated glass with reversible transmittance and photoluminescence manipulation. This technology offers a promising solution for huge storage space and security media in the optoelectronic fields.
Researchers developed a simple and robust method to map field patterns in silicon microdisks, observing resonant modes with drastically different dynamics. They confirmed chaos-assisted tunneling with unprecedented assurance by directly interrogating the dynamics inside the microcavity.
A new wavefront shaping method uses a digital micromirror device to modulate light at high speed, enabling precise control of focal spots in biomedical imaging. The method outperforms conventional genetic algorithm methods with improved contrast and optimization speed.
A team of scientists has fabricated an ultralow loss SiCOI platform with a record-high Q factor of 7.1×206, demonstrating various nonlinear processes including harmonic generation and cascaded Raman lasing.
Researchers have developed DiLFM, a dictionary-learning-based light-field microscopy that improves noise resistance and reduces artifacts. The method combines sparse signal representation and dictionary patching to produce high-quality volumetric imaging.
Researchers developed an in vivo flow cytometry method to monitor circulating tumor cells, revealing daily oscillations in CTC count that change with the day-night cycle. This discovery suggests a potential circadian rhythm regulating CTC release and could improve clinical detection methods.
Researchers use super-resolution infrared imaging combined with X-ray fluorescence nano-imaging to study amyloid toxicity on a subcellular level. They found that the distribution of trace elements in neurons is related to molecular mechanisms of Alzheimer's disease, offering new insights into preventing neuronal damage.
Recent progresses of silicon/2DM PDs are reviewed for their potential applications in various functional photonic integrated circuits. The article discusses the operation mechanisms, device configurations, and application scenarios of these photodetectors.
Laser technology utilizing nanostructures like quantum dots and dashes enables high-speed data transmission and low-latency communications. Scientists highlight the importance of these devices for industry and society, particularly in applications such as coherent communication and quantum key distribution.
Researchers developed a deep learning-based method to reconstruct 3D images of tissue samples using significantly less spectral data than normally required. The new approach successfully removes spatial artifacts, enabling faster imaging without sacrificing resolution or signal-to-noise.
Researchers developed a tapered fiber optoacoustic emitter (TFOE) for non-genetic photoacoustic neural stimulation at the single cell level. The technology achieves high spatial resolution and optoacoustic conversion efficiency, allowing for precise control over neuron activity patterns.
Scientists developed a label-free optical microscopy approach that can image deep brain cells with high resolution and minimal invasiveness. They used the 1700 nm water absorption window to visualize neuronal cell architecture across the entire depth of the mouse neocortex, revealing severe pathology in deep but not superficial cortex.
Researchers designed a cascaded LC flat optical element to achieve steering angle magnification independent of incident beam position. The system consists of two flat optical elements with phase profiles, achieving nearly diffraction-limited performance through ray-tracing simulations.
Researchers reviewed approaches to multi-material multi-photon micro/nano-printing, enabling targeted structures with diverse material properties. Automated systems are rapidly developing for combining multiple primary materials within a single machine tool.
Researchers developed sensitive SERS substrates via femtosecond laser processing for real-time sensing in biomedicine and microfluidic chips. Attomolar detection capabilities were achieved through synergistic enhancement effects, opening up new avenues for monitoring and sensing applications.