Brain-inspired computing enabled by memristors has gained prominence over the years due to nanoscale footprint and reduced complexity for implementing synapses neurons. The demonstration of complex neuromorphic circuits using conventional materials systems been limited high cycle-to-cycle device-to-device variability. Two-dimensional (2D) have used realize transparent, flexible, ultra-thin memristive computing, but with knowledge on statistical variation devices. In this work, we demonstrate...

Two-dimensional (2D) molybdenum disulfide (MoS2) with vertically aligned (VA) layers exhibits significantly enriched surface-exposed edge sites an abundance of dangling bonds owing to its intrinsic crystallographic anisotropy. Such structural variation renders the material exceptionally high chemical reactivity and chemisorption ability, making it particularly attractive for high-performance electrochemical sensing. This superior property can be further promoted as far is integrated on...

Two-dimensional (2D) layered materials exhibit many unique properties, such as near-atomic thickness, electrical tunability, optical and mechanical deformability, which are characteristically distinct from conventional materials. They particularly promising for next-generation biologically inspired optoelectronic artificial synapses, offering unprecedented opportunities beyond the current complementary metal–oxide–semiconductor-based computing device technologies. This Research update...

Prevailing over the bottleneck of von Neumann computing has been significant attention due to inevitableness proceeding through enormous data volumes in current digital technologies. Inspired by human brain's operational principle, artificial synapse neuromorphic explored as an emerging solution. Especially, optoelectronic is growing interest vision essential source information which dealing with optical stimuli vital. Herein, flexible synaptic devices composed centimeter-scale tellurium dioxide (TeO

Broadband photodetectors covering a spectrum range of visible-to-mid-infrared (Mid-IR) are widely utilized for applications, such as chemical sensing and medical devices. As their physical form factors evolve, variety photoresponsive electronic materials have been explored to adapt demanded mechanical deformability. Herein, we report on vapor deposition (CVD) growth centimeter-sized ultrathin (i.e., sub 10 nm) platinum monosulfide (PtS) films integration onto flexible polyimide (PI)...

We report a novel strategy to assemble wafer-scale two-dimensional (2D) transition metal dichalcogenide (TMD) layers of well-defined components and orientations. directly grew variety 2D TMD on "water-dissoluble" single-crystalline salt wafers precisely delaminated them inside water in chemically benign manner. This manufacturing enables the automated integration vertically aligned as well 2D/2D heterolayers arbitrary stacking orders exotic substrates insensitive their kind shape....

We explored the feasibility of wafer-scale two-dimensional (2D) molybdenum disulfide (MoS2) layers toward futuristic environmentally friendly electronics that adopt biodegradable substrates. Large-area (> a few cm2) 2D MoS2 grown on silicon dioxide/silicon (SiO2/Si) wafers were delaminated and integrated onto variety cellulose-based substrates various components shapes in controlled manner; examples include planar papers, cylindrical natural rubbers,...

Advances in modern electronic technologies have been driven toward combining the continued miniaturization of device components and their deterministic integration onto unconventional platforms. This effort aims at achieving devices various form factors with exotic functionalities, which has foreseen to be impossible any traditional approaches. Amongst a variety futuristic technologies, mechanically reconfigurable can reversibly stretched, twisted, folded under severe mechanical deformation...

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) provide an opportunity to investigate diverse scientific phenomena at atomic level and have effective technological potential. In recent times, unlike conventional TMDCs, platinum diselenide (PtSe2) has garnered considerable attention owing its i) fascinating electrical optical features coupled with mechanical strain ii) scalable synthesis method. However, local electrical/tribological/mechanical properties are yet be examined in...

This study reports on the controlled vapor-phase anion exchange conversion of three-dimensional (3D) platinum(II) sulfide (PtS) thin films to two-dimensional platinum ditelluride (2D PtTe2) van der Waals (vdW) layers. The low temperature (i.e., 400 °C) thermal tellurization chemical vapor deposition (CVD)-grown PtS leads formation 2D PtTe2 vdW layers with a modulated crystallographic orientation, i.e., mixture horizontally and vertically oriented enables tunable electrical transport...

Crystallographically anisotropic two-dimensional (2D) molybdenum disulfide (MoS2) with vertically aligned (VA) layers is attractive for electrochemical sensing owing to its surface-enriched dangling bonds coupled extremely large mechanical deformability. In this study, we explored VA-2D MoS2layers integrated on cellulose nanofibers (CNFs) detecting various volatile organic compound gases. Sensor devices employing MoS2/CNFs exhibited excellent sensitivities the tested gases of ethanol,...

Tin monosulfide (SnS) is a promising piezoelectric material with an intrinsically layered structure, making it attractive for self-powered wearable and stretchable devices. However, practical application purposes, essential to improve the output manufacturing compatibility of SnS-based devices by exploring their large-area synthesis principle. In this study, we report chemical vapor deposition (CVD) growth centimeter-scale two-dimensional (2D) SnS layers at temperatures as low 200 °C,...

Recent progress in atomic-scale TEM characterization of structural heterogeny 2D TMD layers is overviewed. The prospects visualization techniques are assessed toward identification and manipulation defects heterointerfaces.

A new type of soft actuators based on a vertical stack nanoporous 2,2,6,6‐tetramethylpiperidine‐1‐oxyl‐oxidized cellulose nanofibers (TOCNs) and atomically thin 2D platinum ditelluride (PtTe 2 ) layers is reported. The actuation TOCNs driven by the interfacing PtTe whose electrothermal proficiency precisely controls their hydration/dehydration states sensitive to mechanical deformation. These vertically stacked TOCN/2D present excellent characteristics such as high linearity bending...

In this study, a MoSe2/Ti3C2Tx nanohybrid-based fabricated flexible physical sensor demonstrates an elevated pressure sensitivity of 14.70 kPa−1 and highly robust nature withstanding up to ∼2500 cycles. The sensor's underlying transduction mechanism is elucidated by exploiting the inherent piezoresistive effect variation Schottky barrier height unveiled interface with assistance comprehensive band structures that are appreciated ultraviolet photoelectron spectroscopy. Also, sensors were...

Abstract Biomorph actuators composed of two layers with asymmetric thermal expansion properties are widely explored owing to their high mechanical adaptability. Electrothermal nanomaterials employed as the Joule heating components in them for controlled expansion, while large integration thickness often limits resulting actuation performances. This study reports high‐performance ultrathin soft biomorph enabled by near atom‐thickness 2D platinum ditelluride (PtTe 2 ) layers—a new class...

Two-dimensional (2D) molybdenum disulfide (MoS2) layers are suitable for visible-to-near infrared photodetection owing to their tunable optical bandgaps. Also, superior mechanical deformability enabled by an extremely small thickness and van der Waals (vdW) assembly allows them be structured into unconventional physical forms, unattainable with any other materials. Herein, we demonstrate a new type of 2D MoS2 layer-based rollable photodetector that can mechanically reconfigured while...

Abstract Heterogeneous integrations of functionally and chemically distinct materials have been explored to develop promising building blocks for opto‐electronic device applications. Recently, the Van der Waals (vdW)‐assembly near atom thickness has provided excellent opportunities beyond what previously difficult realize. However, its up‐to‐date demonstrations remain far from achieving scalability versatility demanded practical applications, that is, integration is generally demonstrated...

Monocrystalline chalcogenide thin films in freestanding forms are very much needed advanced electronics such as flexible phase change memories (PCMs). However, they difficult to manufacture a scalable manner due their growth and delamination challenges. Herein, we report viable strategy for wafer-scale epitaxial of monocrystalline germanium telluride (GeTe) membranes deterministic integrations onto substrates. GeTe epitaxially grown on Ge wafers via tellurization reaction accompanying...