Recently, MXenes, which are 2D early transition metal carbides and carbonitrides, have attracted wide attention because of their excellent conductivities. Here, the electrode applications Ti 2 C(OH) x F y , one member MXene family, in WSe MoS field effect transistors (FETs) assessed. Kelvin probe force microscopy analysis is performed to determine its work function, estimated be ≈4.98 eV. Devices based on /Ti heterostructures fabricated with mechanical transfer method electronic performances...

We report an interband tunneling field effect transistor (TFET) integrated with a Black Phosphorus (BP)-MoS2 junction and ion gel as top gate dielectric. The operation of the BP-MOS2 TFET is based on modulation energy band alignment BP-MoS2 electrostatic gating control MoS2 channel from through dielectric supply carriers BP source, which degenerately doped gel. obtained subthreshold swing reached 65 mV/dec at room temperature 51 160 K, maintaining low SS values in more than 2 orders drain...

AlN nanoneedles with an average tip dimension of ∼15nm were synthesized via a simple vapor deposition method. The exhibit excellent field-emission properties low turn-on field 3.1V∕μm and high current density 4.7mA∕cm2 at the 9.9V∕μm. enhancement factor for single nanoneedle is estimated to be as 30 000 due its small radius. These features make competitive candidate field-emission-based displays.

We reported a new simple route to fabricate N−F-codoped titania inverse opal (IO) films with hierarchical meso-/macroporous structure, in which the IO structure and N−F codoping play role as physical chemical modifications for titania, respectively. Both are simultaneously achieved via liquid phase deposition process using silica colloidal crystal template first time. The average size of mesopore TiO2 frameworks is 3.2 nm, that an interpenetrating aligned macropore adjusted range 201−315 nm....

A switchable enhancement group delay in the terahertz band based on a novel sandwich topology protection structure with graphene is proposed this paper. The notable phase transition of reflected beam comes from topological edge-protected mode excited at photonic crystal surface, and non-trivial allows to be immune against defects imperfections, which lays foundation for band. And introduction creates favorable conditions reversible switching positive negative reflection delay. Moreover, can...

ABSTRACT Organizations are increasingly introducing artificial intelligence (AI) into the workplace and encouraging employees to use AI complete work. Correspondingly, research on usage predominantly focuses positive effects of themselves. Drawing upon attribution theory literature taking an interpersonal perspective, this challenges prevailing consensus by investigating whether, when, how employee would lead negative coworker outcomes. We propose that when coworkers attribute as a way slack...

In this paper, the low-threshold optical bistability (OB) of a reflected light beam at terahertz frequencies is achieved by using multilayer structure where monolayer graphene coated on one-dimensional photonic crystal (1D PC) separated top layer. This OB phenomenon originates from enhancement electrical field owing to excitation Tamm states (OTSs) interface between and 1D PC. It found that hysterical behavior can be electrically controlled properly varying applied voltage graphene....

In this paper, the one-dimensional photonic crystal Fano resonance heterostructure is used to achieve low-threshold and tunable graphene-based optical bistability of transmitted reflected light beam at communication band. The (OB) originates from local field enhancement owing excited by topological edge states mode Fabry-Perot cavity mode. study found that it feasible continuously adjust hysteresis behavior bistable thresholds altering Fermi energy left right graphene respectively....

The direct reductive coupling of guaiacol and other analogues with different amines over Pd/C H 2 as the reductant without any additional additives is reported.

p +-InSb/π-InAs1−xSbx/n+-InSb heterojunction photodiodes operating at near room temperature in the 8–13 μm region of infrared (IR) spectrum are reported. A room-temperature photovoltaic response up to 13 has been observed 300 K with an x≊0.85 sample. The voltage responsivity-area product 3×10−5 V cm2/W obtained for λ=10.6 optimized device. This was close theoretical limit set by Auger mechanism, a detectivity ≊1.5×108 cm Hz1/2/W.

In this paper, we propose a high-sensitivity optical sensor at terahertz frequencies based on composite structure containing one-dimensional photonic crystal (1D PC) coated with layer of monolayer graphene. Between the 1D PC and graphene there is sensing medium. This phenomenon originates from excitation resonance between PC. The proposed highly sensitive to Fermi energy graphene, thickness refractive index medium, number layers. By selecting appropriate parameters, maximum sensitivity (...

In this paper, we have investigated optical bistability modulation of transmitted beam that can be achieved by graphene sandwich structure with topological interface modes at terahertz frequency. Graphene strong nonlinear effect was combined photonic crystal to form a new modes. The light-limiting properties the modes, as well its high unidirectionality and transmission efficiency, all contribute positively reduction threshold. addition, effectively ensure stability two steady state...

We report a new method for the codoping of boron and nitrogen in monolayer graphene film. After CVD synthesis graphene, BN-doped is prepared by performing power-controlled plasma treatment thermal annealing with borazine. films various doping levels, which were controlled altering power, found Raman electrical measurements to investigate exhibit p-doping behavior. Transmission electron microscopy, energy loss spectroscopy, X-ray photoelectron spectroscopy used demonstrate that synthesized...

We investigate the low-threshold optical bistability of transmitted beams at terahertz range based on photonic crystal Fabry-Perot cavity with graphene. Graphene strong nonlinear conductivity is placed in middle and resonance plays a positive role promoting bistability. The curve closely related to incident angle light, parameters graphene, structural cavity. Through parameter optimization, threshold 105 V/m can be obtained, which has reached or close weak field.

Microstructured all-optical switching, possessing the unique function of light controlling light, is an important part on-chip ultra-fast optical connectivity network and integrated logic computing chip. switching has attracted extensive research interest, latest great developments which have also yielded progress in nanophotonics, nonlinear optics, communications, etc. The emergence two-dimensional materials with good third-order nonlinearity provides driving force for improvement switches....

Tunable optical bistability (OB) plays an active role in the manipulation of switches. Here, by combining graphene with one-dimensional photonic crystal (1D PC) a defect layer, we theoretically design simple multilayer structure to manipulate OB. Through coupling Tamm plasmon (TP) and mode (DM), induced narrow peak can be generated original wide reflection angle, so it presents richer situation The theoretical results show that OB adjusted optimizing Fermi energy, number layers. In addition,...

In this article, we present a theoretical analysis of the optical bistability phenomenon transmitted light beam in graphene-based one-dimensional photonic crystal heterostructure terahertz frequency range. This low-threshold originates from enhancement local electric field owing to excitation topological edge state at interface between two proposed crystals. The results calculation and simulation show that hysteretic behavior threshold can be adjusted continuously by changing applied voltage...

We propose a simple thin-layer structure based on epsilon-near-zero mode field enhancement to achieve optical bistability in the near-infrared band. The high transmittance provided by and electric energy limited ultra-thin material means that interaction between input light can be greatly enhanced, creating favorable conditions for realization of hysteresis curve is closely related incident angle thickness material. This relatively easy prepare, so we believe this scheme will have positive...