Scientists from Zhejiang University and Southeast University in China proposed a novel silicon-graphene hybrid plasmonic waveguide, achieving high-performance photodetectors beyond 1.55 μm. The graphene absorption efficiencies are as high as 54.3% and 68.6%, with measured responsivities of 30-70 mA/W at 2 μm and 0.4 A/W at 1.55 μm.
Researchers from The University of Texas at Austin and Tsinghua University develop a new technology called opto-thermoelectric pulling (OTEP) to achieve the optical pulling of light-absorbing particles. This technique uses directional optical heating to create an asymmetric thermoelectric field, allowing for the trapping of particles a...
Scientists have developed a new photostimuable LiGa5O8: Mn2+ glass ceramic medium for three-dimensional volumetric optical data storage, enabling expanded storage capacity and improved information security. The material's high transparency and controlled crystallization lead to a highly ordered nanostructure with low bit error rates.
Researchers have developed a novel planar chiral mirror that preserves the spin of light upon reflection, overcoming limitations of traditional mirrors. This innovation has potential applications in quantum information processing and quantum optics.
Researchers from Nanyang Technological University, Singapore, demonstrate a convenient way to control exciton flow between different colloidal quantum wells at room temperature through optical signals. They achieve continuous transition among three distinct exciton flow regimes with efficiencies of ~50%, ~90% and ~2%.
A team of researchers developed a fully packaged ultrathin arrayed camera inspired by the Xenos peckii eye, achieving high contrast clear images and super-resolution capabilities. The camera's unique configuration suppresses optical noise, resulting in improved image quality.
Researchers developed a novel receiver scheme for detecting complex-valued double sideband signals with field recovery, called carrier-assisted differential detection (CADD). CADD doubles the electrical spectral efficiency compared to conventional carrier-less differential detection, and is insensitive to chromatic dispersion.
Researchers have developed a new type of birefringent modification using ultrafast laser direct writing in silica glass, enabling ultra-low loss spatially variant birefringent optical elements. These elements can be used for high power lasers, visible and UV light sources, and even multiplexed data storage.
Scientists have developed a novel plasmonic platform to tailor the spontaneous near-to-mid IR emission of HgTe quantum dots, achieving a 5-fold enhancement of PL quantum yield and reducing non-radiative decay. The study demonstrates the potential for precise tuning of IR-emitting QDs' emission, improving device performance.
Scientists have developed a new technique to manipulate the spectral width and shape of mode-locked femtosecond pulses in real-time. The time-stretch-assisted spectral analysis uses a genetic algorithm and dispersion medium to achieve precise control over pulse characteristics.
Researchers directly observe a dynamical topological order parameter to probe coherent quantum time evolution in quantum walks. This allows for the classification and study of quantum walks using a novel approach.
A new form of imaging modality called coded light-sheet array microscopy (CLAM) allows for full 3D parallelized fluorescence imaging without scanning. CLAM reduces photobleaching and preserves biological specimen viability, enabling long-term volumetric imaging.
Scientists developed SR-FACT microscopy, combining label-free ODT and two-dimensional fluorescence microscopy to visualize cellular environment. The technique revealed novel subcellular structures like dark-vacuole bodies interacting with organelles.
A team of European scientists developed a micro-particle size analyser using AI and consumer electronics. The device measures particle size with precision comparable to commercial light-based analysers, but is much smaller, lighter, and cheaper.
Scientists propose a new design that replaces traditional high-n materials with tunable nanolaminate layers to achieve improved performance parameters. The new coating enables larger bandwidth, higher LIDT, and smaller transmission ripples compared to traditional designs.
Scientists at the University of Rochester develop a new material that selectively absorbs light only at solar wavelengths, increasing efficiency by 130%. This innovation enhances solar power generation and has potential applications for thermal energy harvesting devices.
Researchers from Chinese Academy of Sciences have successfully demonstrated diabolical points (DPs) in two strongly coupled microdisks with embedded quantum dots. The system enables a controllable phase shift between the microdisks, indicating potential applications in directional laser and quantum phase control.
Researchers have discovered that organic LEDs (OLEDs) exhibit regions of reduced brightness known as 'switched-back' effects, despite increased applied current. This phenomenon is attributed to negative differential resistance induced by nonlinear electrothermal feedback, which can lead to unstable operation and device breakdown.
Researchers developed a mechanoluminescent material that can visualize pressure application locations for up to three days. The material uses defects in its structure to store energy, which is released as light when pressure is applied or infrared radiation is used.
Researchers have developed a noncontact laser ultrasound technique that generates and detects sound waves on the skin surface using eye- and skin-safe lasers. This method produces images with centimeter depths, comparable to clinical ultrasound, and shows sensitivity to tissue features currently detected by conventional ultrasound.
Researchers create a new type of optical metasurface that imposes phase modulation on reflected light, leading to unidirectional light propagation. The metasurface enables nonreciprocal light propagation in free space with unprecedented large temporal modulation frequency.
Researchers demonstrate direct emission of orthogonal handed circular polarization from achiral luminophore using liquid crystalline phase. The twisted structure allows for the generation of CP light with various polarization states.
Scientists developed flexible and efficient transparent solar cells with colour-neutrality using silicon microwires embedded in a polymer matrix. The devices demonstrate transparency of up to 55% and excellent flexibility, making them promising for future transparent solar cells.
Novel optical elements enable multiplication and division of orbital angular momentum (OAM) of light, offering a promising solution to increase information capacity of optical networks. The research results have been published in Light: Science and Applications.
Researchers have developed a novel 'quantum expander' to improve signal-to-noise ratio at kilohertz frequencies in gravitational-wave observatories. This innovative approach squeezes quantum uncertainty of laser light inside optical resonators, expanding detection bandwidth.
Researchers developed an AI-driven smart metasurface for joint control of EM waves on the physical level and digital pipeline, enabling real-time imaging and recognition of multiple non-cooperative people. The intelligent EM camera can be powered by Wi-Fi signals, allowing for hands-free monitoring without visible sensors.
The development of optical vortices has been divided into three stages: fundamental theories, application development, and technology breakthrough. The recent stage has seen significant advancements in metasurface and OAM-multiplexing, enabling high-capacity optical communication and novel nonlinear phenomena.
Researchers have developed a new cytometry platform to detect rare cells in blood with high throughput and low cost. The technique uses magnetic bead labelling and alternating magnetic fields to enrich and detect target cells, achieving a limit of detection of 10 cells per millilitre.
Researchers at Caltech Optical Imaging Laboratory created a technique to break the acoustic diffraction limit in PACT by localizing single dyed droplets flowing in blood vessels, achieving six-fold finer resolution. The droplets provide excellent tracers for super-resolution imaging and enable tracking of blood flow speed.
Researchers developed Bright-field Holography to overcome limitations of holographic 3D imaging. The method combines the image contrast advantage of bright-field microscopy with the snapshot volumetric imaging capability of holography, allowing for rapid creation of images equivalent to those from a bright-field microscope.
Harmful algal blooms have become a serious problem for marine life, affecting humans and wildlife. UCLA researchers created a new flow cytometer that analyzes water samples instantly, providing real-time insight into algal bloom locations and severity.
Researchers used UV laser photolysis to improve diamond synthesis by suppressing unwanted side products. The technique promotes faster and better-quality diamond growth, opening up new possibilities for material synthesis.
Researchers at Ohio State University describe a new semiconductor LED made with GaN-based materials that could enhance LED solid state lighting without significant changes to manufacturing facilities. The breakthrough uses quantum-mechanical tunneling to create 'holes' for radiative recombination, reducing energy losses and self-heating.
Researchers develop a new spectrometer to analyze single living cells in situ, providing mechanical and chemical maps of the system. The study reveals that oncogene expression causes significant softening in cells, making them more invasive.
A new polarization-dipole azimuth-based super-resolution technique has been proposed, addressing a long-standing debate on the role of fluorescence polarization in super-resolution imaging. The technique uses SDOM technology to improve spatial resolution and detection accuracy, revealing interesting findings in biological samples.