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.

Reported here is femtosecond laser mediated bandgap tailoring of graphene oxides (GOs) for direct fabrication graphene-based microdevices. When pulses were used to reduce and pattern GO, oxygen contents in the reduced region could be modulated by varying power. In this way, GO was precisely from 2.4 0.9 eV tuning power 0 23 mW. Through first-principle study, essence proved reduction induced oxygen-content modulation. As representative illustrations, bottom-gate FETs fabricated situ using as...

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...

The green, facile, low-cost and sustainable fabrication of a SERS substrate is reported, through physical vapor deposition silver on rose petals. hierarchical structures the petal contribute to not only superhydrophobicity, but also E-field enhancements. Therefore, rose-petal-based shows high efficiency in detection R6G, limit 10-9 M achieved.

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

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...

Silver microflower arrays constructed by upright nanoplates and attached nanoparticles were fabricated inside a microfluidic channel, thus robust catalytic microreactor for allowing in situSERS monitoring was proposed. On-chip reduction shows that the silver microflowers have high activity SERS enhancement.

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....

The wonderful world of graphene! A simple one-step fabrication biomimetic graphene surfaces that possess both superhydrophobicity and bright structural color is presented. By using two-beam laser interference, construction periodic grating microstructures removal hydrophilic oxygen groups were realized at the same time. Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available...

We have successfully designed a type of temperature-tunable bioinspired surface with tip-shaped pattern for fog collection and unidirectional transport.

Abstract Lithium metal batteries specialize in energy density, while the immoderate dendrite growth and solid electrolyte interphase (SEI) proliferation have been impeding their practical application. The key is regulation of Li + diffusion/nucleation behaviors toward a dense deposition. Herein, 9 Al 4 /Li 3 N energized mixed ionic/electronic conductive (MIEC) interfaces are pre‐implanted both surface bulk lithium anode. Such MIEC activated from situ conversion nano‐alloying reactions...

Inspired by the fog harvesting ability of spider net and interphase wetting surface Namib desert beetles, we designed a kind special bioinspired hybrid on Cu mesh combining polydimethylsiloxane (PDMS) graphene (G). A containing hydrophobic superhydrophobic areas is prepared combination laser etching ultrasonic vibration. Thus, this as-prepared can quickly drive tiny water droplets toward more wettable regions, which makes great contribution to improvement collection efficiency. Moreover,...

Controlling the wettability of graphene and its derivatives is critical for broader applications. However, dynamic dewetting performance usually overlooked. Currently, superhydrophobic with an anisotropic rare. Inspired by natural reed leaves, we report ingenious fabrication process combining photolithography laser holography technologies to create biomimetic surfaces that demonstrate along two directions grooved hierarchical structures, which are similar leaf veins. Microgrooved structures...

Abstract Inspired from butterfly wings that exhibit unique dewetting properties and brilliant structural color synchronously, we reported here the preparation of biomimetic few‐layer graphene films through a template‐directed chemical vapor deposition method using laser‐structured Cu foil as substrates. Hierarchical micronanostructures, including microscale stripes derived laser scanning nanoscale laser‐induced periodic surface structures (LIPSS), formed on after simple femtosecond...

Abstract A surface‐enhanced Raman scattering (SERS)‐active microfluidic device with tunable surface plasmon resonances is presented here. It constructed by silver grating substrates prepared two‐beam laser interference of photoresists and subsequent metal evaporation coating, as well PDMS microchannel derived from soft lithography. By varying the period gratings 200 to 550 nm, (SPRs) could be tuned in a certain range. When SPRs match excitation line, highest enhancement factor 2×10 7...

Reported here is the fabrication of reduced graphene oxide (RGO) grating structures by two-beam laser interference (TBLI) for development highly efficient SERS substrates via simple physical vapor deposition (PVD) coating silver. TBLI has been utilized to make hierarchical RGO with microscale gratings and nanoscale folders through a treatment induced ablation photoreduction process. The contribute formation plasmonic after silver coating, giving rise plenty "hot spots", while substrate would...

We report herein the engineering of surface/interface properties graphene oxide (GO) films by controllable photoreduction treatment. In our recent works, typical processes, including femtosecond laser direct writing (FsLDW), holographic lithography, and UV irradiation, have been employed to make conductive reduced (RGO) microcircuits, hierarchical RGO micro-nanostructures with both superhydrophobicity structural color, as well moisture-responsive GO/RGO bilayer structures. Compared other...

MXene based layered materials have exhibited excellent performance in supercapacitor applications owing to their high conductivity. However, device planarization hinders broader ability a film-based energy storage device. Here, we demonstrated the fabrication of self-assembled MXene–graphene oxide (M-GO) composites on electrostatic interaction between and GO solutions. The as-prepared M-GO composite possessed homogeneous structures tunable conductivities according different contents, which...