Abstract Rice leaves with anisotropic sliding properties have the ability to directionally control movement of water microdroplets. However, realization artificial biosurfaces has remained challenging. It is found, by a systematic investigation, that height 200‐μm‐width groove arrays on rice reaches up 45 μm, far greater than smaller microgrooves are widely adopted for study wetting. A new model based three‐level microstructures (macro/micro/nano) developed interpret behavior. Moreover,...

Precise tuning of surface wettability – by means curvature-driven reversible switching from the pinned to roll-down superhydrophobic state (see figure) is reported for first time. The adhesion force and sliding behaviors poly(dimethylsiloxane) (PDMS) pillar arrays show strong dependence on curvature. Alteration curvature allows a water droplet be easily adjusted " pinned" "roll-down" state, which provides possibility precise, in situ control movements droplets.

Closed-packed high numerical aperture (NA) microlens arrays (MLA) are highly desirable for resolution imaging and signal-to-noise-ratio detection in micro-optical integrated optical applications. However, realization of such devices remains technically challenging. Here, we report quality fabrication curved surfaces MLAs by taking the full advantage surface self-smoothing effect creating reproducible voxels adopting an equal-arc scanning strategy. MLA approximately 100% fill ratio NA 0.46,...

Abstract True three‐dimensionally (3D) integrated biochips are crucial for realizing high performance biochemical analysis and cell engineering, which remain ultimate challenges. In this paper, a new method termed hybrid femtosecond laser microfabrication consists of successive subtractive (femtosecond laser‐assisted wet etching glass) additive (two‐photon polymerization polymer) 3D microprocessing was proposed “ship‐in‐a‐bottle” microchip. Such novel microchips were fabricated by...

Composition modification and surface microstructures have been widely utilized in interface science to improve the performance. In this paper, we observed a significant improvement of oil contact angle (CA) from 66 ± 2° 120 4° by introducing radical silanol group on flat PDMS through oxygen plasma pretreatment. By combining modification, produced three kinds superoleophobic surfaces: 20 μm pitch micropillar arrays, 2.5 arrays gecko foot-like hierarchical microstructures. Among them, with...

The high-precision integration of three-dimensional (3D) microoptical components into microfluidics in a customizable manner is crucial for optical sensing, fluorescence analysis, and cell detection optofluidic applications; however, it remains challenging current microfabrication technologies. This paper reports the in-channel flexible two-dimensional (2D) 3D polymer devices glass by developing novel technique: flat scaffold-supported hybrid femtosecond laser (FSS-HFLM). scaffold with an...

We present here a kind of novel multifunctional ultrathin aluminum foil which consists large-area regular micropore arrays covered with nanostructures.

Pitcher plant-bioinspired bubble slippery surface fabricated by femtosecond laser for buoyancy-driven self-transport and efficient gas capture.

Thermally responsive paraffin-infused slippery surfaces have demonstrated intriguing performance in manipulating the behaviors of versatile droplets. However, present methods been limited to ex situ rigid heat sources with a high voltage 220 V or certain specific photothermal materials, which greatly hinders its practical applications. To solve this problem, an intelligent droplet motion control actuator (DMCA) composed paraffin wax, hydrophobic micropillar-arrayed ZnO film, and flexible...

Abstract Shape memory polymers can change their shapes in a controlled way under external stimuli and thus promote the development of smart devices, soft robotics, microfluidics. Here, kind iron particles (IPs) doped shape microcone is developed for noncontact all‐in‐situ reversible tuning between tilted upright state near‐infrared (NIR) irradiation magnetic field (MF) actuation. The microcones are simply fabricated by laser‐ablated replica‐molding strategy so that height be precisely...

Abstract Magnetically actuated soft grippers find extensive applications in robotics due to their rapid response, biological safety, and wireless control capabilities. However, these systems often require a continuously applied magnetic field during both the capture release processes, which reduces load capacity makes gripping ferromagnetic objects challenging. Here, an electrothermal‐magnetic shape memory (EM‐SMP) microgripper is developed. By incorporating Fe₃O₄ particles into polymer...

Inspired by natural rice leaf surfaces, we report a simple method to prepare three-level macrogrooves and micro/nanostructures on PDMS films using energy-modulation femtosecond laser scanning for potential applications in water collection.

Optimal design and fabrication of novel devices for high-performance optofluidic applications is a key issue the development advanced lab-on-a-chip systems.

Shape memory polymer (SMP) surfaces with tunable wettability have attracted extensive attention due to their widespread applications. However, there been rare reports on in situ tuning SMP materials. In this paper, we reported a kind of distinct superhydrophobic microconed surface the silver nanowire (AgNW) film achieve reversible transition between pinned and roll-down states. The mechanism is taking advantage heating functionality by voltage, which provides energy for fixation recovery...

In this paper, one simple method to control two-direction anisotropic wetting by regular micropearl arrays was demonstrated. Various with large area were rapidly fabricated a kind of improved laser interference lithography. Specially, we found that the parallel contact angle (CA) theta(2) decreased from 93 degrees 67 as intensity ratio four beams increased 2:1 30:1, while perpendicular CA theta(1) determined thickness resin remained constant. This interpreted decrease height variations Delta...

Abstract Smart grippers serving as soft robotics have garnered extensive attentions owing to their great potentials in medical, biomedical, and industrial fields. Though a diversity of that account for manipulating the small objects (e.g., tiny micrometer‐scale droplets) or big ones centimeter‐scale screw) has been proposed, however, cross‐scale maneuvering these two species leveraging an all‐in‐one intelligent gripper is still challenging. Here, magnet/light dual‐responsive shape‐memory...

Abstract Chiral metamaterials have attracted pronounced attention due to their great potential in detecting vortex‐structured light and enantiomeric chiral molecules. However, most previously‐explored rigid structures are constrained by poor tunability, resulting from inability achieve bidirectionally symmetric fabrication. Though the integration of smart materials with femtosecond laser printing has advanced development 3D tunable microstructures, unfortunately, asymmetric deformation those...

Biomimetic structures based on the magnetic response have attracted ever-increasing attention in droplet manipulation. Till now, most methods for manipulation by a are only applicable to single droplet. It is still challenge achieve on-demand and precise control of multiple droplets (≥2). In this paper, strategy magnetism-responsive slanted micropillar arrays (MSMAs) proposed. The Glaco-modified superhydrophobic surface basis multiple-droplet droplet's motion mode (pinned, unidirectional,...

Space-selective metallization of the inside glass microfluidic structures using femtosecond laser direct-write ablation followed by electroless plating is demonstrated. Femtosecond direct writing thermal treatment and successive chemical etching allows us to fabricate three-dimensional photosensitive glass. Then, metal enables flexible deposition patterned films on desired locations not only top bottom walls but also sidewalls fabricated structures. A volume scheme for irradiation inducing...

Micro/nanostructured silicon surfaces are attracting more and research attention because of the wide range applications in optoelectronic devices, microelectronics, microfluidics, biomedical devices.

Abstract This paper systematically demonstrated a variety of experimental phenomena random lasers (RLs) N,N′-di-(3-(isobutyl polyhedral oligomeric silsesquioxanes)propyl) perylene diimide (DPP) organic/inorganic hybrid laser dye, which is composed (PDI) as gain media and silsesquioxanes (POSS) scattering at mole ratio 1:2. In this work, we observe the transition from incoherent RL in DPP-doped solutions polymer membrane systems using dip-coating method to coherent system with defect...

The photoinduced manipulation of liquids on a slippery lubricant-infused porous surface (SLIPS) has attracted tremendous amount attention because its merits contactless stimulation and excellent spatial temporal control. However, tedious fabrication methods by combination template transfer fluorination for photothermal-material-doped SLIPS the lack deeper systematically quantitative analysis with respect to droplet hydrokinetics are greatly perplexing in both academic research industrial...

Abstract Slippery liquid‐impregnated porous surfaces (SLIPS) based smart windows (SWs) that dynamically fine‐tune the solar energy gain are promising candidates for alleviating global crisis, especially dim rainy climates. Unfortunately, inferior durability arising from viscous dissipation over SLIPS‐based SWs remains a great challenge needs to be addressed. Here, an ultra‐robust all‐solid‐state superhydrophobic SW is reported namely electric‐actuated reconfigurable shape memory shutter...

Slanted micro-/nano-structures play pivotal roles in a diversity of fields, including water-proof engineering and fogdrop collection. In light recent advances fabricating slanted microstructures by using photolithography or reactive ion etching techniques, however, complex, environmentally unfavorable, tedious fabrication process makes them far from practical application. Herein, we present viable strategy to prepare shape memory microcone array (SSMMA) combining the femtosecond laser...