Inspired by natural autonomous systems that demonstrate controllable shape, appearance, and actuation under external stimuli, a facile preparation of moisture responsive graphene‐based smart actuators unilateral UV irradiation graphene oxide (GO) papers is reported. GO found to be an effective protocol trigger the reduction GO; however, due limited light transmittance thermal relaxation, thick paper cannot fully reduced. Consequently, tuning photoreduction gradient, anisotropic GO/reduced...

A facile and cost-effective preparation of moisture-responsive graphene bilayer paper by focused sunlight irradiation is reported. The smart shows properties due to selective adsorption water molecules, leading controllable actuation under humid conditions. In this way, graphene-based actuators including a claw, an orientable transporter, crawler robot are successfully developed.

Recent years have seen a considerable growth of research interests in developing novel technologies that permit designable manufacture and controllable manipulation actuators. Among various fabrication driving strategies, light has emerged as an enabler to reach this end, contributing the development Several accessible light‐mediated manufacturing technologies, such ultraviolet (UV) lithography direct laser writing (DLW), are summarized. A series light‐driven strategies including optical...

Abstract Proton microsupercapacitors (MSCs) are promising energy storage devices for cutting‐edge applications. However, all‐solid‐state designs face challenges due to the need synergistic innovations in electrolytes, electrodes, and interface engineering. Herein, direct laser scribing of metal‐free in‐plane proton MSCs reported on ionic covalent organic framework (iCOF) films. The solid‐state AA‐stacked iCOF electrolytes with perfect 2D channels ( d = 0.33 nm) prepared by vacuum filtration,...

Abstract Direct light‐to‐work conversion enables manipulating remote devices in a contactless, controllable, and continuous manner. Although some pioneering works have already proven the feasibility of controlling through light‐irradiation‐induced surface tension gradients, challenges remain, including flexible integration efficient photothermal materials, multifunctional structure design, fluidic drag reduction. This paper reports facile one‐step method for preparing light‐driven floating...

Reported here is a bioinspired fabrication of superhydrophobic graphene surfaces by means two‐beam laser interference (TBLI) treatment oxide (GO) films. Microscale grating‐like structures with tunable periods and additional nanoscale roughness are readily created on films due to induced ablation effect. Synchronously, abundant hydrophilic oxygen‐containing groups (OCGs) GO sheets can be drastically removed after TBLI treatment, which lower its surface energy significantly. The synergistic...

Solar interfacial evaporation has been recognized as a versatile energy conversion protocol for cutting-edge applications such water treatment and power generation (e.g., hydro voltaic effect). Recently, to enhance rates, temperature area have considered essential ingredients, thus photothermal materials three-dimensional hierarchical structures developed promote light-to-heat efficiency evaporation. However, less attention paid the airflow effect, because floatability of membranes should be...

The strong interaction between graphene oxides (GO) and water molecules has trigged enormous research interest in developing GO-based separation films, sensors, actuators. However, sophisticated control over the ultrafast transmission among GO sheets consequent deformation of entire film is still challenging. Inspired from natural "quantum-tunneling-fluidics-effect," here quantum-confined-superfluidics-enabled moisture actuation paper by introducing periodic gratings unilaterally reported....

Abstract Direct light‐to‐work conversion enables remote actuation through a non‐contact manner, among which the photothermal Marangoni effect is significant for developing light‐driven robots because of diversity applicable materials and light sources, as well high energy efficiency. However, lack nanotechnologies that enable flexible integration advanced with actuators complex configurations significantly restricts their practical applications. In this paper, laser‐induced graphene (LIG)...

Strategies that can make general materials smart are highly desired for developing artificial shape-morphing systems and devices. However, at present, it still lacks universal technologies enable designable prototyping of deformable 3D micro-nanostructures. Inspired by natural automation systems, instance, tendrils, leaves, flowers deform dynamically under external stimuli varying internal turgor, we report a dual-3D femtosecond laser processing strategy fabricating microactuators based on...

We fabricate a Janus wire mesh by laser structuring and subsequent fluorosilane/graphene oxide modification for efficient oil/water separation.

Abstract Directional droplet transport on smart surfaces with superwettabilities arouse extensive attentions from both the scientific community and industry due to exciting applications in healthcare, environmental protection, energy harvesting. The past decades have witnessed progress achievements mechanism disclosure, device preparation, applied investigation. Herein, various schemes are summarized, such as electrohydrodynamic strategy, self‐propelled anisotropic surfaces, gravity driven...

Abstract MXene, which is known for its high electrical/thermal conductivity, surface hydrophilicity, excellent mechanical flexibility, and chemical stability, a versatile smart material soft actuators. However, most MXene actuators are fabricated by combining with other inert materials to form bilayer or multilayer structure. Considering the strain mismatch at multimaterial interfaces under frequent deformation, MXene‐based generally associated poor limits their practical applications....

Paper-based supercapacitors (P-SCs) exhibit superior electrochemical performance owing to the flexibility and unique surface properties of paper substrates. Currently, most P-SCs adopt a sandwich structure that is limited by electrode fabrication methods. However, development planar paper-based devices crucial satisfy tremendous demand for wearable electronics. Herein, based on mechanism interaction between laser material, we used direct writing (DLW) techniques fabricate in-plane graphene...

Abstract Intelligent stimuli‐responsive actuators that can convert environmental energies into mechanical works have garnered significant research interests. Among different actuation principles, Marangoni effect is distinguished due to simplicity, high efficiency, remote manipulation, and water environment adaptability. Nevertheless, both chemical physical face their own challenges with respect limited loading, precise light illumination, relatively poor motion controllability. In this...

Resistive strain sensors show great potential in motion detection, medicine and healthcare, human–machine interaction owing to their ease of fabrication, simple structure, adjustable electrical performance. However, developing high-performance flexible resistive with high sensitivity, linearity, low hysteresis remains a challenge. In this work, we report an LMPs (liquid metal particles)/MXene/AgNWs sensor (LMA sensor) sensitivity (GF = 6.339), linearity (R2 0.982 24), (0.452%). process,...

Flexible electronic circuits are critical in biomedical devices, human–machine interfaces, and wearable sensing systems, which further require flexible conductive materials with high conductivity, stretchability, electrical stability. Liquid metal (LM) has attracted much attention due to its unique metallic conductivity room-temperature fluidic properties. However, LM's surface tension properties increase the difficulty of patterning processing. Here, we report a scalable simple fabrication...

Programmable N-doping and simultaneous reduction of graphine oxide (GO) by femtosecond laser direct writing in NH3 atmosphere is presented. The unique laser-mediated programmable doping permits complex micropatterns N-doped graphene, thus holds great promise for the fabrication integration graphene-based devices. N-type transistor behavior observed post-fabricated field-effect transistors. As a service to our authors readers, this journal provides supporting information supplied authors....

Versatile electronic skin devices that enable detection of multimodal signals have revealed great potential for human health monitoring. To make a versatile skin, hierarchical micronanostructures are essential to obtain improved sensing performance and multisignal capability. However, current strategies developing nanostructured usually involve complex procedures, harsh experimental conditions, the use expensive equipment, which limit its practical applications. In this paper, we reported...

Abstract Graphene-based actuators featuring fast and reversible deformation under various external stimuli are promising for soft robotics. However, these bimorph incapable of complex programmable 3D deformation, which limits their practical application. Here, inspired from the collective coupling coordination living cells, we fabricated a moisture-responsive graphene actuator swarm that has shape-changing capability by programming SU-8 patterns underneath. To get better control over...