We have synthesized the hybrid supercapacitor electrode of Co3O4 nanoparticles on vertically aligned graphene nanosheets (VAGNs) supported by carbon fabric. The VAGN served as an excellent backbone together with fabric, enhancing composites to a high specific capacitance 3480 F/g, approaching theoretical value (3560 F/g). A highly flexible all-solid-state symmetric device was fabricated two pieces our Co3O4/VAGN/carbon fabric electrode. is suitable for different bending angles and delivers...

SnO2 nanowire gas sensors have been fabricated on Cd−Au comb-shaped interdigitating electrodes using thermal evaporation of the mixed powders and active carbon. The self-assembly grown excellent performance in sensor response to hydrogen concentration range 10 1000 ppm. This high is attributed large portion undercoordinated atoms surface nanowires. influence Debye length nanowires gap between examined discussed.

Although two-dimensional (2D) materials have attracted considerable research interest for use in the development of innovative wearable optoelectronic systems, integrated performance 2D photodetectors, including flexibility, transparency, broadband response and stability air, remains quite low to date. Here, we demonstrate a flexible, transparent, high-stability ultra-broadband photodetector made using large-area highly-crystalline WSe2 films that were prepared by pulsed-laser deposition...

The progress in the field of graphene has aroused a renaissance keen research interest layered transition metal dichalcogenides (TMDs). Tungsten disulfide (WS2), typical TMD with favorable semiconducting band gap and strong light-matter interaction, exhibits great potential for highly-responsive photodetection. However, WS2-based photodetection is currently unsatisfactory due to low optical absorption (2%-10%) poor carrier mobility (0.01-0.91 cm(2) V(-1) s(-1)) thin WS2 layers grown by...

The most recent advances in Ti₃C₂T_x-based supercapacitor electrodes are comprehensively reviewed, with an emphasis on the vital role that Ti₃C₂T_x MXene plays remarkable electrochemical performance and related mechanisms.

Nanoelectronics is in urgent demand of exceptional device architecture with ultrathin thickness below 10 nm and dangling‐bond‐free surface to break through current physical bottleneck achieve new record integration level. The advance 2D van der Waals materials endows scientists accessibility. This study reports an all‐layered Bi 2 Te 3 ‐SnSe‐Bi photodetector, the broadband photoresponse from ultraviolet (370 nm) near‐infrared (808 demonstrated. In addition, optimized responsivity reaches 5.5...

Developing electrode materials with both high energy and power densities holds the key for satisfying urgent demand of storage worldwide. Herein, we demonstrate successful preparation Co3V2O8 nanostructures that are constructed from self-assembly ultrathin nanosheets via a simple hydrothermal method followed by annealing in air at 350 °C 2 h. A "slipping-exfoliating-self reassembly" model based on time-dependent experiments was proposed to elucidate formation hierarchical nanosheets. When...

Here, we report a vertically-constructed ultra-broadband photodetector based on TI Bi₂Te₃–Si heterostructure.

Supercapacitors or electrochemical capacitors, as energy storage devices, require very stable positive electrode materials for useful applications. Although most electrodes are based on crystalline mixed‐metal hydroxides, their pseudocapacitors usually perform poorly have a short cycle life. High activities can be achieved with amorphous phases. Methods to produce also not typically amenable towards compositions. It is demonstrated that electrochemistry in an ambient environment used series...

Amorphous materials are usually evaluated as photocatalytically inactive due to the amorphous nature-induced self-trapping of tail states, in spite their achievements electrochemistry. NiO crystals fail act an individual reactor for photocatalytic H2 evolution because intrinsic hole doping, regardless impressive cocatalytic ability proton/electron transfer. Here we demonstrate that two-dimensional nanostructure can efficient and robust photocatalyst solar without any cocatalysts. Further,...

Fano resonance arising from the interaction between a broad “bright” mode and narrow “dark” has been widely investigated in symmetry-breaking structures made of noble metals such as plasmonic asymmetric oligomers or other well-designed nanostructures. However, nanoscale all-dielectric dimers not experimentally demonstrated so far. We report first experimental observation directional silicon nanosphere (both homodimer heterodimer) clarify that coupling magnetic electric dipole modes can...

Abstract In recent years, owing to the significant applications of health monitoring, wearable electronic devices such as smart watches, glass and cameras have been growing rapidly. Gas sensor is an important part for detecting pollutant, toxic combustible gases. However, in order apply devices, gas needs flexible, transparent working at room temperature, which are not available traditional sensors. Here, we first time fabricate a light-controlling, transparentand room-temperature ethanol by...

Tellurium nanoparticles are used for broadband solar energy harvesting and efficient photothermal conversion.

Our review provides a comprehensive overview on the latest progress in pulsed-laser deposition (PLD) of 2D layered materials (2DLMs), and its application photoelectric detection. We begin with retrospective various 2DLMs their development Then we present fundamentals PLD unique advantages compared traditional growth methods. Subsequently, influence parameters are discussed. After this, describe current metal-semiconductor-metal vertical heterojunction photodetectors that incorporate...

An in-depth perspective on the role that N heteroatoms in 2D ZnIn₂S₄ play improving photocatalytic properties.

The enzymatic antioxidant system (EAS) protects aerobic cells from oxidative stress. However, it is brittle and susceptible of inactivation reactive oxygen species (ROS) immoderate production. Here, we demonstrated that MoS2 nanosheets (few-layer MoS2), as a multifunctional nanozyme, possess intrinsic activity mimicking enzymes superoxide dismutases (SODs), catalases (CATs), peroxidases (PODs) under physiological conditions (pH 7.4, 25 °C). Further, showed POD-like by transferring electrons...

MXenes have shown great potential for supercapacitor electrodes due to their unique characteristics, but simultaneously achieving high capacitance, rate capability, and cyclic stability along with good mechanical flexibility is exceptionally challenging. Here, highly enhanced stability, as well T3C2Tx MXene-based are obtained by engineering the electrode structure, modifying surface chemistry, optimizing fabrication process via an optimized integration approach. This approach combines more...

High-resolution imaging is at the heart of revolutionary breakthroughs intelligent technologies, and it established as an important approach toward high-sensitivity information extraction/storage. However, due to incompatibility between non-silicon optoelectronic materials traditional integrated circuits well lack competent photosensitive semiconductors in infrared region, development ultrabroadband severely impeded. Herein, monolithic integration wafer-scale tellurene photoelectric...

Nano-crystalline diamond is prepared with a unique method in which graphite target etched by high-power pulsed laser water. Transmission electron microscopy (TEM) and high resolution (HREM) indicate nano-crystalline obtained, having hexagonal lattice or cubic lattice.

Transparency has never been integrated into freestanding flexible graphene paper (FF-GP), although FF-GP discussed extensively, because a thin transparent sheet will fracture easily when the template or substrate is removed using traditional methods. Here, (FFT-GP) was developed NaCl as and applied in stretchable supercapacitors. The capacitance improved by nearly 1000-fold compared with that of laminated wrinkled chemical vapor deposition graphene-film-based

Cobalt hydroxide (Co(OH)2) has received extensive attention for its exceptional splendid electrical properties as a promising supercapacitor electrode material. Co(OH)2 study so far prefers to crystal instead of amorphous, in spite amorphous impressive electrochemical including the ability improve efficiency based on disorder structure. The nanostructures with excellent behaviors were successfully synthesized by simple and green electrochemistry. Our as-prepared exhibited ultrahigh...