Ultratransparent electrodes have attracted considerable attention in optoelectronics and energy technology. However, balancing storage capability transparency remains challenging. Herein, an situ strategy employing a temporally spatially shaped femtosecond laser is reported for photochemically synthesizing of MXene quantum dots (MQDs) uniformly attached to reduced graphene oxide (LRGO) with exceptional electrochemical capacitance ultrahigh transparency. The mechanism plasma dynamics the...

Abstract Understanding laser induced ultrafast processes with complex three-dimensional (3D) geometries and extreme property evolution offers a unique opportunity to explore novel physical phenomena overcome the manufacturing limitations. Ultrafast imaging exceptional spatiotemporal resolution thus has been considered an effective tool. However, in conventional single-view techniques, 3D information is projected on two-dimensional plane, which leads significant loss that detrimental...

Flexible sensors based on laser-induced graphene (LIG) are widely used in wearable personal devices, with the morphology and lattice arrangement of LIG key factors affecting their performance various applications. In this study, femtosecond-laser-induced MXene-composited (LIMG) is to improve electrical conductivity by incorporating MXene, a 2D material high concentration free electrons, into structure. By combining pump-probe detection, breakdown spectroscopy (LIBS), density functional...

As an important patterning method, femtosecond laser-induced periodic surface structure (LIPSS) has attracted widespread attention in recent years. Due to the complex physical processes involved laser scanning process, it is difficult predict required LIPSS morphologies, which hinders rapid customization of large-area patterns. In this study, a structural optimization method combining data-driven deep learning with energy deposition model was proposed control morphologies silicon. After...

Femtosecond laser ablation of metals generates a strongly ionized plasma plume near the irradiated surface. The resulting shielding effect can reduce subsequent energy deposition and lower nanomachining efficiency, especially during multi-pulse irradiation. Understanding spatiotemporal evolution laser-induced its associated is, therefore, crucial. A hybrid two-temperature direct simulation Monte Carlo (TTM-DSMC) computational model is developed in this study, which synergistically couples...

Epitaxial MnSi1.7 was grown locally on both (111) and (001)Si. The orientation relationships were found to be [11̄0]MnSi1.7//[111]Si, (220)MnSi1.7//(22̄0)Si [001]MnSi1.7//[001]Si, (100)MnSi1.7//(400)Si for epitaxy (001)Si samples, respectively. Three variants of epitaxy, required by the symmetry consideration, also observed form (111)Si. Interfacial dislocations identified edge type with (1)/(6) 〈112〉 1/2 〈110〉 Burgers vectors epitaxial (001)Si, presence different forms is suggested in view...

Abstract The significance of ultrafast laser-induced energy and mass transfer at interfaces has been growing in the field nanoscience technology. Nevertheless, complexity arising from non-linear non-equilibrium optical-thermal-mechanical interactions results intricate transitional behaviors. This presents challenges when attempting to analyze these phenomena exclusively through modeling or experimentation. In this study, we conduct time-resolved reflective pump-probe imaging...

Nonlinear optical properties have been extensively studied due to their promising nonlinear effects and various applications. With ultrashort duration ultrahigh intensity, a femtosecond laser can fabricate superior-quality micro-/nanostructures improve the nonlinearity of materials, which are for stable high-performance devices. In this contribution, yttria-stabilized zirconia (YSZ) with fs laser-induced is demonstrated exhibit unique anisotropic light–material interaction response on [100],...

Abstract Microscale charge and energy transfer is an ultrafast process that can determine the photoelectrochemical performance of devices. However, nonlinear nonequilibrium properties hinder our understanding processes; thus, direct imaging strategy has become effective means to uncover processes. Due diffraction limits optical imaging, obtained image insufficient spatial resolution. Therefore, electron beam combined with a pulse laser showing high spatial–temporal resolution popular area...

Writing spatial information on ultrafast all-optical switching is essential for constructing processing units in photonic applications, such as optical communication and computing networks. However, most methods ignore the fabrication imaging of controllable area, limiting its further design devices. Here, we propose a method to spatially write based MAPbI3 perovskite with nanocone structure visualize effect arbitrary designed area. Due light confinement using fs laser, strongly absorbed by...

The third-generation semiconductors are the cornerstone of power semiconductor leap forward and have attracted much attention because their excellent properties wide applications. Meanwhile, femtosecond laser processing as a convenient method further improves performance related devices expands application prospect. In this work, an approximate 3 times improvement internal quantum efficiency (IQE) 5.5 enhancement photoluminescence (PL) intensity were achieved in GaN film prepared using...

We have explored an asymmetric optoelectronic response of FAPb(I0.8Br0.2)3 (FA = formamidine) perovskite device irradiated by a femtosecond (fs) laser at different laser-fluence values. Photoluminescence (PL) spectra indicated blue shift from 772 nm (1.606 eV) to 745 (1.664 and more than 80% quenching the perovskite. The PL can be attributed compositional variation, which was confirmed through elemental analysis X-ray diffraction. Two distinct characteristic time constants 193−46 ps 1.9–0.61...

A significant challenge is to develop effective and controllable processes for fabricating hydrophobic metal surfaces with high mechanical properties. The combination of femtosecond laser direct writing (LDW) gold nanoparticle magnetron sputtering (Au-MS) has successfully produced multiscale structures on Ti-6Al-4V (TC4) alloy, which possess excellent superhydrophobic hardening By adjusting the polarization control micro/nanostructures, dual-scale structure transformed into a triple-scale...

Silicon photonic devices are key components in optical imaging and sensing for communication, the development of silicon-based photodetectors with ideal performance visible infrared spectral ranges can promote application silicon photonics various photoelectronic systems. Here, a Au-doped black photodetector was prepared by femtosecond laser direct writing technique. The conical micro-/nanostructures different sizes were produced fluence irradiation. Ultrafast pump–probe technology revealed...

Holograms hidden inside transparent materials are important for information encryption storage because of their advantages secrecy, and could completely avoid loss caused by surface wear. Inside the material, modified filaments array was need hologram fabrication to change optical phase or amplitude incident laser, which is sensitive refractive index. Then uniformity highly required. In this study, tuning interval time double-pulse processing, holograms with improved imaging quality were...