In this work, we demonstrate that gas adsorption is significantly higher in edge sites of vertically aligned MoS2 compared to the conventional basal plane exposed films. To compare effect alignment on properties, synthesized three distinct films with different directions ((1) horizontally (basal exposed), (2) mixture and layers (3) (edge exposed)) by using rapid sulfurization method CVD process. Vertically film shows about 5-fold enhanced sensitivity NO2 molecules film. has superior...

Superior chemical sensing performance of black phosphorus (BP) is demonstrated by comparison with MoS2 and graphene. Dynamic measurements multichannel detection show that BP displays highly sensitive, selective, fast-responsive NO2 compared to the other representative 2D materials. As a service our authors readers, this journal provides supporting information supplied authors. Such materials are peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical...

One of the most important issues in development gas sensors for breath analysis is fabrication sensor arrays that possess different responses recognizing patterns volatile organic compounds (VOCs). Here, we develop a high-performance chemiresistor with tunable response and high sensitivity representative VOC groups by using molybdenum disulfide (MoS2) conjugating thiolated ligand (mercaptoundecanoic acid (MUA)) to MoS2 surface. Primitive MUA-conjugated sensing channels exhibit distinctly...

The development of high-performance volatile organic compound (VOC) sensor based on a p-type metal oxide semiconductor (MOS) is one the important topics in gas research because its unique sensing characteristics, namely, rapid recovery kinetics, low temperature dependence, high humidity or thermal stability, and potential for p–n junction applications. Despite intensive efforts made this area, applications such sensors are hindered drawbacks related to sensitivity slow response long time...

Controlling the charge concentrations of two-dimensional (2D) materials is a critical requirement for realizing versatility and potential application these in high-performance electronics sensors. In order to exploit novel chemical-sensing characteristics 2D sensitive selective sensors, various functionalization methods are needed ensure efficient doping channels based on materials. present study, gas-sensing performance MoS2 has been significantly enhanced by controlled Au nanoparticle...

The development of photocatalysts CO2 reduction based on stable and Earth-abundant materials is essential for utilizing solar energy storing it in chemical forms. Here, we report the synthesis characterization a composite material consisting few layers MoS2 hierarchical porous structure mesoporous TiO2 macroporous 3D graphene aerogel (TGM) as high-performance, robust, noble-metal-free photocatalyst reduction. contributed to high photocatalytic catalyst performance, which was investigated by...

A new semiconductor-based photocatalytic reactor design with optimized pressure and flow rates on both sides of an intermediately placed catalyst enhances mass transport, accelerates CO desorption prevents photocatalyst deactivation.

Abstract The development of complex nanostructures containing a homo‐ and heteromixture two or more metals is considerable challenge in nanotechnology. However, previous approaches are considerably limited to the number combinations depending on compatibility elements, shape control nanostructure. In this study, significant step taken toward resolving these limitations via utilization low‐energy argon‐ion bombardment. multilayer films etched re‐sputtered sidewall pre‐pattern, which secondary...

The electrical conductivity of graphene oxide (GO) and reduced (RGO) films with poly(allylamine hydrochloride) (PAH) supporting layers is investigated. Graphene-PAH hybrid were produced in a two-step procedure that consisted vacuum filtration for GO (or RGO) dispersion to fabricate the thin on quartz substrates, followed by deposition PAH onto via solution casting. Highly selective layer sheets was confirmed through detection fluorescence signals hybridized Cy3-DNA PAH-coated surfaces. In...

Enhancement of the fluorescence intensity quantum dot (QD)-polymer nanocomposite arrays is an important issue in QD studies because significant reduction signals such due to nonradiative processes densely packed polymer chains solid films. In this study, we enhance without significantly reducing their optical transparency. Enhanced achieved by hybridizing ultrathin plasmonic Au nanowalls onto sidewalls via single-step patterning and hybridization. The nanowall induces metal-enhanced...

We have studied molecular structures and kinetic stabilities of M(N5)3 (M = Sc, Y) M(N5)4 Ti, Zr, Hf) complexes theoretically. All these compounds are found to be stable with more than a 13 kcal/mol barrier. In particular, Ti(N5)4 showed the largest dissociation energy 173.0 thermodynamic stability. This complex had high nitrogen content (85% by weight), significantly metal ratio (20:1) among neutral M(N5)n species here in literature. is thus forecasted good candidate for nitrogen-rich...

Ultrasensitive DNA detection using enhanced two-photon excited fluorescence: systems formed on a highly regular gold nanopattern over large area show sensitivity from high to ultralow concentrations (∼10−11 M, see figure) target molecules. The observed fluorescence the patterned surface is two orders of magnitude compared with molecules glass surface. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or...

The energetic properties of multicomponent explosive materials can be altered for high detonation capabilities and minimized safety risk by changing their building components. We synthesized coordination polymers (ECPs) using a 5,5'-bis(tetrazole)-1,1'-diolate linker N,N-dimethylacetamide (DMA) solvent, together with Cu Mn metal cations. new compounds, ECP-1 ECP-2, contain two different types 1D chain structures, straight helical. have conducted comprehensive studies on these ECP properties,...

In this study, we introduce a simple multi-directional rubbing method to generate various periodic patterns of toric focal conic domains (TFCDs), typical smectic (Sm) LC defect by using the commonly used Sm materials, 4′-n-octyl-4-cyano-biphenyl (8CB). We have successfully obtained variety spatially arranged TFCD arrays such as parallelogrammic, hexagonal and square changing angle (Ω) between two different directions. Our experimental results demonstrate that frustration distortion nematic...

Highly efficient plasmonic Ag rear electrodes in top-illuminated PSCs employing MoO3/Ag (13 nm)/MoO3 stacks as top transparent were successfully demonstrated, resulting the significant enhancement of solar cell performance with a PCE up to 7.18%. The hemispherical nanostructured arrays effectively concentrate incident light within photoactive layer addition contributing extended stability robust structure.

Controlling the organization of self-assembling building blocks over a large area is crucial for lithographic tools based on bottom-up approach. However, fabrication liquid crystal (LC) defect patterns with particular ordering still remains challenge because limited close-packed morphologies LC defects. Here, we introduce multiple-stamping domain separation method control dimensions and structures. Prepatterns various grid shapes planar polyimide (PI) surfaces were fabricated by pressing...

Abstract New energetic materials are required to compensate for the shortcomings of current ones. Especially secondary explosives ones with low‐sensitivity, while maintaining performance similar those primary ones, and particularly useful when safety must be ensured. Herein, we report two metal‐organic frameworks (eMOFs), eMOF‐1, [Mn 5 (mtz) 6.1 (atz) 2.9 (NO 3 )] (mtz=5‐methyltetrazole, atz=5‐aminotetrazole) eMOF‐2, [Cu(mtz) 2 ], both which have unique detonation sensitivity properties. In...

Silver has been widely used for optical sensing and imaging applications which benefit from localized surface plasmon resonance (LSPR) in a nanoscale configuration. Many attempts have made to fabricate control silver nanostructures order improve the high performance other applications. However, fatal mechanical weakness of lack durability oxygen-rich conditions disrupted manufacturing reproducible by top-down lithography approach. In this study, we suggest steady fabrication strategy obtain...

We describe a highly efficient method for fabricating variety of complex 3D nano-patterns from single master pattern using secondary sputtering lithography, which is 10 nm scale patterning that we have developed. A rapid etching rate in the bottom part PS pillar during RIE process can produce various nanostructure shapes and residual layer thickness influence feature dimensions, due to controlled time leading different thicknesses. This technique provides effective producing patterns...

In nano‐biotechnology, optoelectronics, and energy research areas, various fabrication methods have been developed for hybrid nanoparticles. A method is here fabricating highly monodisperse three‐dimensional nanoparticles using a unique top‐down based on secondary sputtering lithography. Nanostructures that formed PEDOT sacrificial layer are transferred from the substrate to an aqueous solution in process could be used successfully disperse variety of nanoparticle shapes By this method,...

We describe a highly efficient method for fabricating controllable and reliable sub-20 nm scale nano-gap structures through an elastomeric nano-stamp with embedded ultra-thin pattern. The stamp consists of ultrahigh resolution (approximately 10 nm) high aspect ratio (ca. 15) metal nano-structures, which are obtained by secondary sputtering lithography (SSL). fabricated in this fashion achieve meet the requirements minimal cost, reliability, controllability, reproducibility, applicability to...

This study includes the experimental results of a sensitive M13 bacteriophage-based sensor system that are well matched with quantum mechanics calculation.

Various lithography techniques have been developed to fabricate well-defined and small feature sized metallic patterned structures, utilize the plasmonic property or hot spot effect. In this study, a dimple-shaped array was prepared from self-assembled liquid crystal (LC) defect structure, so-called toric focal conic domains (TFCDs). This uniform well-ordered micro-dimple replicated by UV-curable photopolymer (NOA63) polydimethylsiloxane (PDMS) which resulted in conical dimpled arrays on...

We report the first demonstration of a lateral heterojunction bipolar transistor realised using selective area epitaxy to grow emitter and collector structures. The had gain 2 at current density kA cm−2. low is directly attributable base width used in this novel structure does not result from regrown junctions which exhibited an ideality factor 1.6.