Pre-wetted sand shows (quasi)underwater superoleophobicity and ultralow oil-adhesion in water medium based on its strong absorbing ability. A pre-wetted layer is successfully applied for oil–water separation extremely high efficiency capacity. This method separating oil simple, almost free of cost, green, very efficient. Oil–water the subject theoretical practical research around world because frequency with which spills occur increasing amounts oily industrial wastewater that are...

The natural compound eye is a striking imaging device with wealth of fascinating optical features such as wide field view (FOV), low aberration, and high sensitivity. Dragonflies in particular possess large, sophisticated eyes that exhibit resolving power information‐processing capacity. Here, large‐scale artificial inspired by the unique designs counterparts presented. created high‐efficiency strategy combines single‐pulse femtosecond laser wet etching thermal embossing. These have...

A bioinspired method to realize transparent underwater superoleophobic and anti-oil surfaces by a femtosecond laser treatment.

In this Letter, a novel fabrication of large-area concave microlens array (MLA) on silicon is demonstrated by combination high-speed laser scanning, which would result in single femtosecond pulse ablation surface silicon, and subsequent wet etching. Microscale microlenses with tunable dimensions accessional aspherical profile are readily obtained the 1 cm × film, useful as optical elements for infrared (IR) applications. The aperture diameter height were characterized results reveal that...

Pursuing flexible tactile electronic skin sensors with superior comprehensive performances is highly desired in practical applications. However, current suffer insufficient flexibility and sensitivity, as well high-cost low-efficiency fabrication, are susceptible to contamination sensing performances. Here, a sensitive all-flexible sensor (AFTS) presented capacitive that combines double-side micropyramids dielectric layer liquid metal (LM) electrode. The design fabrication of LM-based AFTS...

Abstract Liquid metal (LM) has potential applications in flexible electronics due to its high electrical conductivity and flexibility. However, common methods of printing LM circuits on soft substrates lack controllability, precision, the ability repair a damaged circuit. In this paper, we propose method that uses magnetic field guide (MLM) droplet print circuit femtosecond (fs) laser-patterned silicone surface. After mixing iron (Fe) particles into LM, movement resultant MLM could be...

We demonstrate an improved femtosecond laser irradiation followed by chemical etching process to create complex three-dimensional (3D) microchannels with arbitrary length and uniform diameter inside fused silica. A segmented method of introducing extra access ports a secondary power compensation is presented, which enables the fabrication 3D helical 1.140 cm aspect-ratio 522. Based on this method, micromixer consists long microchannel y-tape was created measured mixing properties injecting...

Abstract In this work, a 3D IR artificial compound eye (ACE) optical component is fabricated using thermoplastic polymer material. The femtosecond laser‐assisted wet etching and the nano‐imprinting techniques are proposed for fabricating thin shell multi‐aperture component. prepared close‐packed with over 1000 high‐quality micro‐facet‐lenslets (ommatidia) on semispherical dome base radius of 2.7 mm sag height 2.1 mm, enabling enlarged field view to 148°. ommatidia diameter 150 µm numerical...

Three-dimensional (3D) multi-microchannel mixers can meet the requirements of different combinations according to actual needs. Rapid and simple creation 3D in a “lab-on-a-chip” platform is significant challenge micromachining. In order realize complex mixing functions microfluidic chips, we fabricated two kinds structure micromixers for multiple substance mixes simultaneously, separately, proper order. The are by femtosecond laser wet etch technology inside fused silica. helical have...

Subwavelength structures on MgAl 2 O 4 hold significant technological importance in mid‐infrared (mid‐IR) optics, particularly for windows used military mid‐IR devices that must operate under harsh conditions. Herein, a novel and efficient strategy utilizing spatially shaped femtosecond laser pulse delay fabricating antireflective surfaces hard, difficult‐to‐machine spinel with stable broadband transmittance waves is reported. With this method, new micro–nanohybrid structure composed of...

Abstract Fog generation can severely damage optical systems by degrading the light absorption rate and imaging quality of components. Furthermore, fog reduce flux transmittance system, resulting in poor clarity contrast. Studies have focused on minimizing formation effects. Drawbacks such as high energy consumption waste pollution limit application conventional methods. However, achieving resistance components remains a challenge. A novel method fabricating anti‐fogging slippery surfaces...

This paper presents a facile method for the fabrication of on-chip three-dimensional (3D) microcoils inside fused silica. The main process involves two steps: (1) creating 3D helical microchannels silica using an improved femtosecond laser irradiation assisted by chemical etching (FLICE) technology and (2) conductive treatment injecting metal gallium into microchannels. high aspect ratio microcoil was prepared with diameter 100 μm, length 880 μm pitch coil 44 μm. is flexible to fabricate...

The creation of complex three-dimensional (3D) microcoils has attracted significant attention from both scientific and applied research communities. However, it still remains challenging to build 3D with arbitrary configurations using conventional planar lithographic fabrication methods. This Letter presents a new facile method based on an improved femtosecond laser wet etch technology metal microsolidifying process for the on-chip inside fused silica. diameter is about 30 μm, effective...

A new strategy to realize a real liquid lens array without evaporation problems based on femtosecond laser-induced underwater superoleophobic–oleophobic heterogeneous pattern.

Controlling the underwater bubble wettability on a solid surface is of great research significance. In this letter, simple method to achieve reversible switch between superaerophilicity and superaerophobicity superhydrophobic nanowire-haired mesh by alternately vacuumizing treatment in water drying air reported. Such endows as-prepared with many functional applications controlling bubble’s behavior substrate. The superaerophilic able absorb/capture bubbles water, while superaerophobic has...

Rapid and facile creation of three-dimensional (3D) microcoils array in a "lab-on-a-chip" platform is big challenge micromachining. Here we report method based on an improved femtosecond-laser wet-etch (FLWE) technology metal-microsolidifying process for the fabrication 3D inside fused silica. Based this approach, fabricated microcoil arrays such as 3×3 O-shaped 4×4 liner array. By injecting high-melting-point alloy, electrocircuit can hardly be disconnected. The also exhibits good...

Eutectic gallium-indium (EGaIn) liquid metal (LM) attracts increasing interest because of its broad applications in flexible circuits and soft devices. However, LM can easily adhere to a solid substrate due the existence high-adhesive oxide outside layer, which greatly limits real application materials. Current methods reduce adhesion are mostly based on chemical treatment rather than surface microstructure, not suitable for most practical applications. In this paper, microstructure was...