Articles tagged with Lasers
Researchers use high-energy synchrotron X-ray to study spatter dynamics during LPBF, revealing links between vapour depression shape and spatter interactions. The study proposes strategies to minimize defects, improving the surface quality of LPBF-manufactured parts.
A new SERS microfluidic system was developed by Shanghai Jiao Tong University researchers, achieving a detection limit lower than 10 ppt of harmful substances. The system uses femtosecond laser-induced nanoparticle implantation into flexible substrate for sensitive and reusable microfluidics detection.
The team achieves nanofabrication of nanostructures buried deep inside silicon wafers, enabling sub-wavelength and multi-dimensional control directly inside the material. The breakthrough opens up new possibilities for developing nano-scale systems with unique architectures.
Researchers at Osaka University have developed a faster, highly accurate way to measure the temperatures of electronic components using neutrons. The technique, called neutron resonance absorption, can acquire temperature data in just 100 nanoseconds.
A new technology combines femtosecond laser-designed lubricated slippery surfaces with electrostatic interactions to manipulate droplets. This allows for diverse working conditions and functions, including driving droplets on inclined surfaces, manipulating various liquids, and sorting particles.
Researchers developed a chip-scale erbium-doped waveguide laser that approaches fiber-based laser performance, featuring wide wavelength tunability and stable output. The breakthrough enables low-cost, portable systems for various applications including telecommunications, medical diagnostics, and consumer electronics.
Researchers at the University of Rochester developed a new microcomb laser design that provides low power efficiency, high tunability, and easy operation. The simplified approach enables direct control over the comb with a single switch, opening up potential applications in telecommunications systems, LiDAR for autonomous vehicles.
A new sensor developed at the University of Copenhagen and Hvidovre Hospital can detect errors in MRI scans using laser light and gas, paving the way for better, cheaper, and faster scans. The sensor works by measuring changes in the magnetic field, allowing for corrections to be made and images to be made accurate.
Researchers developed a novel 3D printing technology that can print multi-material tubular structures as thin as 50 micrometers. The technology, called Polar-coordinate Line-projection Light-curing Production (PLLP), uses a rotating mandrel and patterned light illumination to create complex structures.
Researchers used laser treatments to transform ordinary cork into a powerful tool for treating oil spills. The laser-treated cork collected oil out of water within 2 minutes and kept water out, making it easier to extract the oil.
Researchers developed an index to optimize picosecond laser treatment for skin blemishes, showing low complication rates and high efficacy. The wavelength-dependent indicators are expected to improve the safety and effectiveness of the treatment.
Researchers from the University of Rochester's Laboratory for Laser Energetics demonstrated an effective 'spark plug' for direct-drive methods of inertial confinement fusion (ICF), achieving a plasma hot enough to initiate fusion reactions. The successful experiments use the OMEGA laser system, with the goal of eventually producing fus...
Researchers from Osaka University and IMRA AMERICA have developed a photonics-based wireless link that breaks speed records for data transmission. The system achieved a single-channel transmission rate of 240 gigabits per second using ultra-low phase noise, paving the way for near-instantaneous global communication.
Researchers developed a novel laser-induced hydrothermal reaction method to grow binary metal oxide nanostructures and layered-double hydroxides on nickel foams. This technique improves the production rate by over 19 times while consuming only 27.78% of the total energy required by conventional methods.
Researchers from The University of Texas at Austin have demonstrated a compact particle accelerator that produces an electron beam with an energy of 10 billion electron volts (10 GeV) in a chamber less than 20 meters long. The breakthrough uses nanoparticles to boost the energy delivered to electrons, enabling new applications in semic...
Recent progress in metallic powders characterization, preparation, and reuse for laser powder bed fusion (L-PBF) enhances printing consistency and reduces costs. Novel cost-effective methods like fluidized bed and cold mechanically derived method are emerging to prepare powders.
Dual optical comb technology enables high-sensitivity and rapid biomolecule detection, leveraging the connection between optical and electrical frequency signals. The approach combines the strengths of optical and electrical frequency measurement methods, offering enhanced precision and convenience in biosensing applications.
A new laser-based sampling system allows for higher depth resolution, enabling scientists to reconstruct continuous annual temperature changes thousands of years ago. The LMS system overcomes previous limitations in sampling ice cores, preserving critical oxygen and hydrogen isotopes needed to infer past temperatures.
Scientists at Beijing Institute of Technology have developed an ultrafast quasi-three-dimensional technique, enabling higher dimensions to analyze ultrafast processes. This method breaks through the limitations of original observational dimensions, enhancing our ability to analyze ultra-fast processes comprehensively.
A team of scientists has developed a broadband frequency-modulated comb based on advanced quantum-dot laser, generating a record 3-dB optical bandwidth of 2.2 THz. This quasi-continuous-wave FM comb does not deliver strong optical pulses, making it favorable for integrated DWDM systems.
Researchers developed a new approach to create a wideband microwave absorption metamaterial using ultraviolet lasers, achieving high absorption performance and control over electrical and magnetic properties. The process enables mass production of complex structures without post-treatment.
Fiber sensing scientists from Shenzhen University have developed an encrypted fiber optic tag that can be used for all-optical labeling and recognition of optical transmission channels. The team proposed a method using fiber Bragg grating arrays prepared by femtosecond laser direct writing to flexibly store different coding sequences.
Researchers at Huazhong University of Science and Technology have developed a systematic review of laser powder bed fusion (LPBF)-fabricated NiTi alloys. The study highlights the effect of process parameters on printability, mechanical properties, and functional behaviors of NiTi shape memory alloys. These findings provide evidence for...
Researchers at the University of Tsukuba created a liquid droplet-based laser that remains stable under ambient conditions and can be tuned using gas convection. The development enables the creation of flexible optical communication devices with potential applications in airflow detectors and fiber-optics communications.
Researchers have successfully demonstrated terahertz wireless communication using a micro-resonator soliton comb, which can potentially overcome technical limitations in current wireless electronics and enable seamless connections between optical and wireless communication systems. The study achieved data transmission rates of up to 2 ...
Researchers have developed a technique for accelerating ions with lasers using transparent targets, resulting in ultra-short beams ideal for cancer treatment and radiobiology studies. The method has been successfully replicated at two independent laser facilities, showcasing its robustness and potential applications.
A team at City University of Hong Kong has developed a novel approach to converting environmental temperature fluctuations into clean chemical energy using pyroelectric catalysis. By combining pyroelectric materials with localized plasmonic heat sources, the researchers achieved significantly faster and more efficient pyro-catalytic re...
Researchers at CELIA have developed a laser drilling method that creates elongated, crack-free micro-holes in glass. This breakthrough allows for high-aspect ratio holes with smooth inner walls, enabling new applications in microelectronics.
Researchers at the University of Tsukuba have developed an optoelectronic resonator that enhances the sensitivity of an electron pulse detector, allowing for ultrafast electronic characterization of proteins or materials. This breakthrough may aid in the study of biomolecules and industrial materials.
Optical tweezers have evolved to trap, sort, transport, and enrich various biological particles with finer force strength and non-invasive nature. This enables applications in biology, pharmacology, and clinical research fields, offering a promising tool for understanding human life at the single-cell level.
A team of researchers from Osaka University used computer simulations to model the optical radiation force distribution induced by an interference pattern, enabling the fabrication of nano-sized structures with chiral properties. This technology has the potential to create new optical devices, such as chirality sensors.
A team from The Institute of Industrial Science at The University of Tokyo has developed a new platform that uses organorhodium(III) phthalocyanine complexes to achieve the combination of traits necessary for photodynamic therapy. The new system shows toxicity to HeLa cells, indicating its potential as a cancer treatment.
A team from Harvard John A. Paulson School of Engineering and Applied Sciences has developed an electro-optic frequency comb that is 100-times more efficient and has more than twice the bandwidth of previous state-of-the-art versions.
Researchers at Osaka University have successfully created a miniature magnetosphere using lasers, directly measuring pure electron outflows associated with magnetic reconnection. This breakthrough sheds light on the microscopic electron dynamics driving space and astrophysical phenomena.
A research team developed a new approach to generate deep-ultraviolet lasing through a 'domino upconversion' process of nanoparticles using near-infrared light. This breakthrough enables the construction of miniaturised high energy lasers for bio-detection and photonic devices.
Scientists have successfully developed lead-free bismuth halide perovskites with broadband emission, overcoming toxicity and instability issues of traditional lead-based materials. The new material exhibits high efficiency and stability, paving the way for potential applications in artificial lighting and displays.
A new technique uses air lasing and coherent Raman spectroscopy to detect greenhouse gases with high sensitivity and multi-component measurement capabilities. The detection reaches a level of 0.03% and can distinguish between CO2 isotopes.
This special issue of Energy Material Advances highlights recent progress in synthesizing and tuning perovskite nanocrystals and other emerging nanocrystal materials. Research focuses on fundamental understanding of doping, synthesis, and spectroscopy, as well as applications in solar cells and light-emitting diodes.
Researchers at Osaka University have successfully accelerated energetic ions using graphene targets irradiated with ultra-intense lasers, overcoming previous limitations. The findings demonstrate the robustness of graphene in this application and pave the way for compact and efficient plasma-based accelerators.
Researchers have developed a method to achieve nature-inspired superwettability using femtosecond lasers. The technique enables the creation of hierarchical microstructures that promote water repellency on various materials, leading to applications in anti-liquids, self-cleaning, and other fields.
Researchers developed a GeSn-on-insulator (GeSnOI) technology for high-performance GeSn lasers, tackling interface defects, strain engineering, thermal management, and optical confinement. This leads to improved laser properties, including lower threshold, higher maximum lasing temperature, and stronger lasing intensity.
Researchers at North Carolina State University have developed a new synthesis process that increases the number of holes in p-type III-nitride semiconductor materials, leading to more efficient LEDs and lasers. This breakthrough could also help address the long-lasting problem called the 'green gap' in LED technology.
Researchers at Bar-Ilan University have demonstrated disorder-induced localization, allowing for the control of random laser emission through pump profile shaping. This breakthrough enables the creation of highly efficient and stable microlasers with unprecedented degrees of freedom.