Buscar recursos académicos

Abstract The aim of this work is to study the properties of the photonic crystal fibers (PCFs) and the laser field distribution at the zero dispersion wavelengths (ZDWs). Three PCFs are proposed, all the PCFs have one mi...

Experimental studies of the features of the formation of laser-induced periodic nanostructures on the surface of silicon wafers in the zones of action of second, millisecond and nanosecond laser pulses are conducted in t...

Functional materials with high viscosity and solid materials have received more and more attentions in flexible pressure sensors, which are inadequate in the most used molding method. Herein, laser direct writing (LDW) m...

Transparent brittle materials such as glass and sapphire are widely concerned and applied in consumer electronics, optoelectronic devices, etc. due to their excellent physical and chemical stability and good transparency...

Supercapacitors, with the merits of both capacitors for safe and fast charge and batteries for high energy storage have drawn tremendous attention. Recently, laser scribed graphene has been increasingly studied for super...

In this paper, line profile analysis of several Cr transitions was carried out for characterization of a laser-induced plasma. The plasma was generated on a metallic alloy (nominal Cr concentration 29.7%) in air at atmos...

Topological lasers have been intensively investigated as a strong candidate for robust single-mode lasers. A typical topological laser employs a single-mode topological edge state, which appears deterministically in a de...

Laser processes for cutting, annealing, structuring, and printing of battery materials have a great potential in order to minimize the fabrication costs and to increase the electrochemical performance and operational lif...

Highlights First holistic review: It provides the first systematic review encompassing the entire spectrum of laser processing techniques from doping and ablation to crystallization and contact optimization within the co...

The action of fractional lasers is based on the principle of fractional photothermolysis, which consists in generating in the skin a mesh of microthermal treatment zones surrounded by healthy, undamaged tissue. The most...

The microstructure evolution and performance characteristics of the heat-affected zone (HAZ) in laser welding of 10Ni5CrMoV steel are investigated. By designing novel thermal simulation specimens and utilizing a thermal ...

Scars are formed when a defect in the dermis is replaced with fibrous connective tissue. Sometimes scars limit the range of motion as a result of contractures. In addition, they are a source of severe subjective complain...

Rapid establishment of herd immunity with vaccination is effective to combat emerging infectious diseases. Although the incorporation of adjuvant and intradermal (ID) injection could augment early responses to the vaccin...

Abstract Non-penetration laser welding of lap joints in austenitic stainless steel sheets is commonly preferred in fields where the surface quality is of utmost importance. However, the application of non-penetration wel...

Abstract Photoinitiated polymerization of methyl methacrylate has been observed using cw-CO2 laser radiation of (10.6 µm). Both of DSC and TGA thermal analysis techniques were used for identification of the thermal char...

Carbon nanotubes (CNTs) possess remarkable nonlinear optical properties; a particular application is to function as a mode locker used in ultrafast fiber lasers to produce ultrashort optical pulses. Various types of CNT ...

ABSTRACT: Objectives: To evaluate and synthesise the current evidence on the efficacy of laser-activated irrigation in endodontics, with a focus on microbial reduction, postoperative outcomes, and its potential as an ad...

Abstract Metamaterials are defined as artificially designed micro-architectures with unusual physical properties, including optical, electromagnetic, mechanical, and thermal characteristics. This study investigates the c...

Design strategies for improving terahertz (THz) quantum cascade lasers (QCLs) in the 5–6 THz range are investigated numerically and experimentally, with the goal of overcoming the degradation in performance that occu...

Abstract In this research, the optical activity of glucose solution had been studied through the studying of influence of this solution in rotation of polarization plane of laser He-Ne light, the different concentrations...

In the context of this work, a prototype hybrid photoacoustic (PA) and optical system for the on-line monitoring of laser cleaning procedures is presented. The developed apparatus has enabled the detection of MHz frequen...

Abstract Background Sjögren’s disease is a systemic autoimmune disease characterized by dysfunction of the salivary and lacrimal glands, leading to xerostomia and xerophthalmia. Case presentation A 55-year-old Hispani...

Here we developed a novel wavelength-switchable visible continuous-wave (CW) Pr3+:YLF laser around 670 nm. In single-wavelength laser operations, the maximum output powers of 2.60 W, 1.26 W, and 0.21 W, the maximum slope...