The Holography and Metamaterials Lab uses a Mach-Zehnder interferometer to record holograms containing intensity and phase information. These are reconstructed and combined to create true 3D virtual reality and high-resolution topograms of fingerprints, revealing level-3 details.
Researchers have discovered a new application of holographic interferometry, enabling the measurement of real-time vibrations on reflective surfaces. This technique has significant implications for industries such as aviation, where it can help prevent engine failure and improve overall efficiency.
Researchers have realized giant enhancement of two-dimensional excitonic upconversion using doubly resonant plasmonic nanocavity. The system boosts upconversion intensity by over 1000-fold and reduces saturation threshold power by 2-3 orders. This achievement lays a solid foundation for net optical refrigeration.
Scientists have created a new label-free 3D microscopy technique called transport of intensity diffraction tomography with non-interferometric synthetic aperture (TIDT-NSA). This allows for high-quality imaging without the need for fluorescent dyes or proteins, and can be performed under arbitrary illumination conditions.
Scientists successfully realize one-dimensional nodal ring and ridge states, enabling novel functional photonic devices such as sharp bend waveguides and microcavity lasing. The discovery also introduces intrinsic relationship between optical Tamm state and nodal ring, paving the way for deterministic design of optical phenomena.
Scientists have demonstrated nonlinear generation and topological tuned confinement of THz waves in an engineered lithium niobate chip. Topological control of THz waves may bring about new possibilities in the realization of THz integrated circuits, reducing scattering loss and decay.
Researchers have made a breakthrough in controlling metamaterials with brainwaves, enabling real-time, remote, and wireless applications. The team developed a framework for remotely mind-controlled metasurfaces using Bluetooth technology.
Researchers create an electromagnetic brain-computer-metasurface (EBCM) that can decode operator's intentions and send commands wirelessly. The system uses EEG signals to translate brain messages into various EM commands, enabling text communication between operators.
Researchers investigate the formation process and fluorescence mechanism of o-phenylenediamine-based red emission CDs. The study reveals a systematic approach to analyzing emission mechanisms, providing insights into the structure-property relationship of carbon dots.
Recent research reviews progresses in miniaturized spectrometers, focusing on integrated spectrometers with CMOS-compatible integration platforms. The authors establish performance benchmarks and discuss technological advancements in wavelength de-multiplexing and multiplexing-based spectrometers.
Scientists develop a universal design framework for arbitrary on-chip spatial mode control using metamaterial building blocks, enabling record-high order mode up to the 20th. The method supports high-efficiency integrated photonic communication systems and boosts development of various information processing 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.
Scientists develop a method to suppress the crosstalk effect in top-emitting micro-LED-based displays by filling the space between each chip with a light-blocking matrix. The resulting full-color display prototype achieves a color gamut of up to 122% NTSC, surpassing conventional displays.
Researchers have developed advanced liquid crystal devices for augmented reality (AR) and virtual reality (VR) displays, improving image quality and formfactor. The devices address challenges such as light efficiency, resolution density, and ambient contrast ratio, providing valuable guidelines for future LC device development.
Researchers developed highly efficient pure green-emitting InP-based QLEDs with an external quantum efficiency of 15.2%. The performance can be optimized by regulating the components of the inner alloyed ZnSe shell, reducing surface defects and increasing photoluminescence quantum yield.
A new optical architecture enables high-speed, low-power computation of multiple linear transformations using light diffraction. The design allows for scalable parallel processing and can perform complex tasks such as image classification and encryption with enhanced multifunctionality.
Scientists introduce a new type of structured light as high-dimensional information carriers for free-space optical communication, supporting thousands of independently spatial channels. The novel modal set has a highly consistent propagation behavior, enabling a divergence degeneracy as high as 20.
Scientists have developed a built-in push-pull acousto-optic modulator with high energy overlap, achieving comparable efficiency to suspended counterparts. The device overcomes issues with low modulation efficiency and exhibits excellent characteristics for on-chip microwave-to-optical conversion devices.
The study explores the synergy between Floquet matter and metamaterials, enabling nonreciprocal propagation, time-reversal, and novel optical gain. Periodic temporal modulation can produce a synthetic effective magnetic field in topological insulators, opening new avenues for wave control.
A team of scientists has created a new manufacturing routine and application of binary amplitude-only holograms for direct drug printing. The diffraction pattern reflects the amount of cargo remaining in the hologram, enabling tracking of substance release over time.
Researchers develop an all-optical approach using photoluminescence to analyze radiative and nonradiative recombination processes in semiconductors. By combining Raman spectroscopy with PL data, they can extract quantitative information on carrier recombination dynamics, including defect density and capture cross-sections.
Researchers develop innovative scheme to manipulate light with orthogonal circular polarization and conjugated PB phase in a single layer. They successfully generate reflective optical vortex and vector beams with enhanced efficiency and compact configuration.
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.
Researchers have developed a vertical matrix X-ray detector that can distinguish between substances of different densities, enhancing imaging contrast and identifying soft substances. The device uses a novel design to restore the X-ray spectrum in detail, enabling effective multi-energy discrimination under a single exposure.
Researchers have created a hybrid Dirac semimetal photodetector that captures low-energy photons with high sensitivity and efficiency. The device features excellent environmental stability and can generate photocurrent across a wide spectral regime.
The study introduces a promising strategy for chip-integrated photodetectors by integrating van der Waals PN heterojunctions of 2D materials on optical waveguides. This approach enables low dark current, high responsivity, and fast speed, while simplifying fabrication processes and reducing costs.
Researchers have developed a novel terahertz imaging technique that enables sub-wavelength resolution without approaching the sample, overcoming sample damage and distance limitations. The new method uses an air-plasma dynamic aperture to modulate THz beam intensity on a sample surface.
A team of scientists has developed an optoelectronic NIR-to-visible upconversion device with a linear response, fast dynamics, and low excitation power. The device exhibits intensity-temperature sensitivity and spectrum-temperature sensitivity, enabling spatially resolved thermal sensing and applications in biomedical diagnostics.
Raman distributed optical fiber sensing offers flexibility and effectiveness in distributed temperature measurement for various engineering applications. Researchers have developed high-performance systems with optimized performance indices, including accuracy, distance, resolution, and multi-parameter monitoring.
A new AI-based localization technique enhances photoacoustic imaging speed and spatial resolution, reducing laser exposure and imaging time. The technology offers a solution for preclinical and clinical applications requiring fast and fine spatial resolution.
Researchers developed a self-alignment attention-guided deep learning architecture to improve resolution and speed in label-free nonlinear optical microscopes. The technique achieved high-quality reconstruction with significant speed-ups and spatial resolution enhancements.
Researchers have created a light-to-microwave transmitter using an optically programmed time-varying metasurface, enabling direct conversion of light signals to microwave signals. The system can transmit two different videos simultaneously over a single platform, paving the way for low-cost and low-complexity hybrid communication systems.
Researchers have developed advanced optical 3D printing methods for creating tissue scaffolds with controlled structure and scale, mimicking native extracellular matrices. These methods offer high precision, cost-effectiveness, and potential for broader applications in tissue engineering.
Intelligent metasurfaces have three crucial properties: digitalization, programmability, and intelligence. They enable control without human intervention, unlocking devices like cloaking, tunneling, and holograms.
A new lensless opto-electronic neural network (LOEN) architecture is developed for computer vision tasks, utilizing a passive mask to perform convolution operations in the optical field. The system achieves high recognition accuracy and energy efficiency compared to traditional machine vision links.
A new photonic-engineered thermal management strategy incorporates enhanced color-preserving radiative cooling into existing enclosures, reducing energy consumption by up to 63%. The system is designed to simultaneously reflect solar energy and radiate infrared energy, while blocking heat radiation from entering the inner space.
A comprehensive review of non-separability in classical light explores its potential for fundamental science and applications. The study introduces a unified framework for classifying non-separable states involving different degrees of freedom of light, offering a timely perspective on the field.
Researchers have developed a new method to expand the wavelength range of nanowire lasers using the second-order nonlinear effect. By utilizing this effect, high-quality GaAs/In core/shell NWs can generate visible lasing peaks at 508 nm via self-frequency-conversion processes such as second-harmonic generation (SHG). The technology als...
Researchers developed a core-shell structured nanotheranostic agent (YVO₄:Nd³⁺-HMME@MnO₂-LF) for orthotopic glioma imaging and therapy. The YVO₄ core exhibits NIR-II fluorescence properties, while the MnO₂ shell releases Mn²⁺ ions for T₁-weight MRI and provides O₂ in tumor microenvironments to enhance sonodynamic therapy.
Researchers developed efficient red emissive carbon dots (CDs) through a facile one-step solvothermal synthesis, enabling high-quality imaging in the red to NIR range. The CDs exhibited high photoluminescence quantum yield and enhanced multi-photon fluorescence when combined with bovine serum albumin.
A team of scientists has proposed a versatile photonic slide rule that enables simultaneous resolution of wavelength and polarization state. The device uses an all-silicon metasurface to achieve angle-resolved focusing spots, allowing for easy retrieval of the wavelength and polarization information.
Researchers demonstrate atomic scale memristors capable of emitting photons during resistive switching, providing a compact and CMOS-compatible light source. The 'Atomic Photon Source' consists of a planar Ag/amorphous SiOx/Pt junction with optical antennas, emitting light during electrical connection formation.
Researchers propose new method to enhance light delivery and focusing in scattering mediums, enabling deep imaging and biomedicine applications. The technique uses flying spot Reflection Matrix Optical Coherence Tomography (RMOCT) to separate multiple scattering photons and control their energy.
Researchers have developed Fe³⁺-activated Sr₂InSbO₆ broadband NIR-emitting phosphor materials with tunable emission from 885 to 1005 nm. The Ca2InSbO6:Fe3+ phosphor peaking at 935 nm shows an ultra-high IQE of 87%, making it suitable for NIR spectroscopy detection.
Scientists develop high-power hybrid laser emitter for volumetric photoacoustic imaging, improving penetration depth and quality of medical diagnosis. The technology enables accurate measurement of water content in deep tissue, opening avenues for biological research and disease diagnosis.
Deep learning is being adopted in optical metrology to solve ill-posed inverse problems, such as model mismatch and error accumulation. This approach leverages large datasets and active control strategies to produce accurate reconstruction results.
Scientists successfully convert diverse optical skyrmion textures without changing their spatial structure, enabling potential use as next-generation optical information carriers. The breakthrough allows for high-dimensional quantum interfaces and polarization-resolved imaging.
A team of scientists creates ultrafast optical nonlinearity in a monolayer semiconductor by designing plasmon-exciton polaritons, achieving strong interactions and great tunability. This breakthrough enables high-speed all-optical switching and energy-efficient data processing at room temperature.
A new carbon dots-based organic blend, m-CDs@CA, was developed to exhibit superior long persistent luminescence (LPL) features. The afterglow is observed for over one hour via irradiation by a hand-hold UV lamp, making it suitable for applications under ambient conditions and in aqueous medium.
A team of scientists has successfully implemented a novel QSDC system that transmits information directly using quantum states over 100 km of fiber, achieving ultra-low error rates and high transmission rates. The system uses photonic time-bin and phase states, resulting in a record-breaking distance of 100 km.