Articles tagged with Laser Ablation
Researchers at the University of Basel have developed a new laser profile that enables deeper and faster cuts in hard tissues like bone. The top hat profile distributes energy more evenly, overcoming limitations of traditional laser systems and enabling joint implants and custom-made 3D-printed implants.
Researchers investigated e-beam propagation through ionospheric plasma using particle-in-cell simulations. Nonrelativistic e-beams exhibit laminar-to-turbulent transition with beam compression factor quantified for the first time.
A clinical trial has shown that a novel cooled laser focal therapy device can effectively treat prostate cancer with minimal side effects. The treatment provided similar cancer-related outcomes to traditional methods but with an improved safety profile and low rates of incontinence.
A new Tulane University study suggests that catheter ablation delivers major benefits for patients diagnosed with both atrial fibrillation and obstructive sleep apnea, significantly lowering the risks of heart failure and death. The study found a 40% drop in major cardiovascular events and a 70% decline in all-cause mortality.
This pilot study evaluated the effectiveness of improved laser ablation with saline injection in treating early-stage lung adenocarcinoma. The modified system significantly expanded ablation zones, achieving a 100% complete ablation rate in six patients. The treatment was safe and effective, with no major complications reported.
Laser-generated nanoparticles offer a cleaner, scalable alternative to traditional chemical synthesis methods for electronics applications. The method, called laser ablation in liquids, produces surfactant-free, highly pure metal-based nanoparticles with tailored surface properties.
A new laser machining method enables high-precision patterned laser micro-grooving with root mean square errors below 0.5 μm. This technique allows for rapid and scalable manufacturing of custom microstructures, advancing applications in microfluidic devices, sensors, and heat dissipation systems.
A new study from the University of Colorado at Boulder has uncovered strong evidence for a global 'Snowball Earth' event, where massive glaciers covered the entire planet down to the equator hundreds of millions of years ago. The findings provide critical insights into the planet's geologic history and the emergence of life on Earth.
Researchers create bioinspired directional structures to inhibit the wetting of molten droplets on super-melt-philic surfaces at high temperatures. The structures provide anisotropic energy barriers, hindering the movement of water and preventing wetting.
Researchers demonstrate high-performance micromachining of single crystalline sapphire using GHz burst mode femtosecond laser-induced plasma assisted ablation. The process achieves higher ablation efficiency, improved quality and better fabrication resolution compared to single-pulse mode laser direct ablation.
Researchers demonstrate GHz burst mode femtosecond laser-induced plasma assisted ablation for super-resolution machining of single crystalline sapphire, achieving higher ablation efficiency and quality. The process enables direct interaction of subsequent laser pulses with plasma generated by preceding pulses, resulting in improved fab...
Researchers have developed procedures for using gold nanostars to perform more efficient, conformal, and safe laser ablations for treating brain tumors. This technique addresses limitations in traditional LITT by providing improved precision for lesions greater than 3 cm or with complex shapes.
The Multifunctional Ablative Gastrointestinal Imaging Capsule (MAGIC) combines OCT technology with an endoscope camera and ablation laser for superior esophageal imaging. It provides unmatched accuracy in detecting early lesions, enabling potential ablative treatment of esophageal abnormalities.
Researchers from Pohang University of Science & Technology have fabricated a small-scale energy storage device that can stretch, twist, fold, and wrinkle. The device features fine patterning of liquid metal electrodes using laser ablation, allowing it to maintain its energy storage performance under repeated mechanical deformations.
The development of a compact microchip laser system paves the way for simple benchtop preparation and direct use of metal nanoparticles in catalytic reactions. The study reveals that the microchip laser exhibits high ablation efficiency despite having smaller pulse energy compared to conventional lasers, making it an attractive alterna...
Energy beam-based direct and assisted polishing technologies for diamonds improve surface quality and material removal rates, overcoming limitations of traditional methods. Researchers analyzed four latest polishing techniques, including laser polishing, ion beam polishing, plasma-assisted polishing, and laser-assisted polishing.
Scientists use new photography technique to observe interaction between biological cell and shock wave, revealing high-speed phenomena. The technology has potential applications in science, medicine, and industry.
Researchers have developed a new technique for manufacturing 3D microlens arrays using holographic fs-laser processing-assisted wet-etching technology. This method offers high precision, efficiency, and versatility, enabling the fabrication of complex 3D patterns with high fidelity.
A coordinated network of space lasers could prevent collisions with manned and unmanned space assets by nudging debris off potential collision courses. The artificial intelligence-powered lasers can maneuver and work together to respond rapidly to debris of any size.
A new laser-based process chain has been developed to fabricate fused silica optics with high laser-induced damage thresholds, overcoming conventional manufacturing limitations. The process uses CO2 lasers for uniform layer-by-layer surface removal, precisely eliminating subsurface mechanical damage and surface/subsurface contamination.
The new fabrication approach allows for the creation of a stretchable dipole antenna that can be used in wearable medical devices, separating mobile devices via flexible antennas to form a wireless body-area network. The resonant frequency of the antenna can be tuned by varying applied strain.
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.
Researchers used acoustic emission to analyze pulsed laser processing of float glass, revealing interactions and forming circular pits and cracks. This study demonstrates the feasibility of AE monitoring in studying pulsed laser processing of other brittle materials.
The team's breakthrough enables the production of bright visible-wavelength pulses in the femtosecond range directly with fiber lasers. This advance has significant implications for various fields, including high-precision ablation of biological tissues, two-photon excitation microscopy, and material processing.
Scientists have developed BiBurst mode, which groups femtosecond laser pulses in MHz envelopes to increase ablation speed and improve throughput. The technique achieves 23 times faster ablation of silicon without compromising quality.
Researchers demonstrate the ability of GHz burst mode femtosecond laser pulses to create unique two-dimensional (2D) periodic surface nanostructures on silicon substrates. The GHz burst mode enhances ablation efficiency and quality compared to conventional single-pulse mode, enabling the formation of distinctive 2D LIPSS.
Researchers have developed a new spectroscopy technique called filament- and plasma-grating-induced breakdown spectroscopy (F-GIBS), which improves the sensitivity of trace metal detection in liquid samples. The technique uses fluid jets to analyze aqueous solutions and achieves high precision by avoiding detrimental influences of liqu...
Researchers combined ultrafast imaging with 3D atomistic simulation to study femtosecond laser ablation. The technique revealed the ablation mechanism of bulky gold at different excitation energy flow densities, providing guidance for material fabrication.
Researchers developed a laser-based approach to perform microbiopsies, enabling fast, painless tissue sampling with minimal damage. The novel technique uses laser ablation to extract tiny tissue volumes, which can be analyzed using virtual H&E imaging and other techniques in minutes, not hours.
Researchers at the University of Oklahoma are testing a novel therapy that combines local laser ablation and immunostimulants to treat metastatic pancreatic cancer. The treatment aims to stimulate the immune system to fight cancer cells, with promising preliminary results in pre-clinical studies and clinical trials.
A new study simulates electron dynamics during femtosecond laser ablation of MoS2, revealing two types of ablation mechanisms and distinct electron dynamics. The results show that higher fluence induces superheated liquid formation, leading to dramatic changes in reflectivity and micro-honeycomb structures.
Researchers at Louisiana State University have developed a portable system for capturing and analyzing biomolecules from fingermarks, including DNA and explosives. The technique uses infrared laser ablation to lift molecules off surfaces without destroying them.
Using supercomputers, researchers simulate phase transformations in metal surfaces induced by lasers. This helps predict material properties for practical applications such as engineering of new metals.
Researchers at UCLA have found laser heat ablation to be a safe and effective treatment option for men with intermediate risk prostate cancer, with no serious adverse effects reported. The technique uses MRI guidance to target and destroy cancerous tissue, offering a middle ground between radical surgery and active surveillance.
Researchers from Kazan Federal University and Ogarev Mordovia State University conducted an in vitro study on endovenous laser ablation of varicose veins using solid-state laser radiation. The results confirmed that a heated carbonized layer on the fiber end face increases efficiency, paving the way for process optimization.
A team of Finnish scientists has created a nano-scale map of toner ink thickness on paper, revealing that wood fibers receive relatively thin coatings and roughness dictates ink thickness rather than chemical variations.
Researchers at Optica have developed a hybrid approach that integrates laser-ablation propulsion with gas blasting nozzles, increasing thrust efficiency. This innovation enables supersonic speeds for launching small satellites and accelerating aircraft to Mach 10 and beyond.
A retrospective case series review found that carbon dioxide laser ablation had lower recurrence rates compared to radiation therapy, with minimal morbidity. The treatment option is particularly advantageous for large lesions in cosmetically sensitive regions of the head and neck.
Researchers have developed a method for creating novel metal films using ultrashort laser ablation, which allows for precise control over nanoparticle structures. This technique has potential applications in fields such as surface-enhanced Raman spectroscopy and the growth of carbon nanotubes.
A study comparing radiofrequency ablation (RFA) and endovenous laser ablation (EVLA) for varicose veins found that RFA caused less post-operative pain. Both groups showed similar improvements in clinical and quality of life scores at six weeks after surgery.
Scientists use laser ablation to remove unwanted material from artworks, preserving masterpieces like Porta del Paradiso and Donatello's David. The technique also shows promising results in cleaning underwater artworks that could deteriorate in air.
Researchers found that excisional treatments, such as cold knife conisation and Large Loop Excision of the Transformation Zone (LLETZ), are associated with a small but real increase in risk of pregnancy-related morbidity. The findings suggest that cervical screening after the age of 25 may be beneficial for long-term obstetric outcomes.
In a largest study of its type, researchers treated 2,506 liver tumors and found that MR-guided laser-induced thermotherapy (LITT) improves average survival rate from diagnosis by 3.8 years, outperforming traditional surgery. Laser treatment offers several advantages, including outpatient basis under local anesthesia.