BaTiO3 (BTO) ferroelectric films, which are renowned for their lead-free compositions, superior stability, and absence of a wake-up effect, promising candidate materials in the field non-volatile memories. However, prerequisites high-temperature conditions fabrication thin films impose constraints on substrate choice, has limited advancement memories based single-crystal flexible BTO with robust properties. Herein, technique been developed devices using pulsed laser deposition system. have...

We present a broadband tunable circular polarization converter composed of single graphene sheet patterned with butterfly-shaped holes, dielectric spacer, and 7-layer ground plane. It can convert linearly polarized wave into circularly in reflection mode. The be dynamically tuned by varying the Fermi energy sheet. Furthermore, acting as plane modulate phase its reflected controlling Femi energy, which provides constructive interference condition at surface broad bandwidth therefore...

A metal–graphene hybrid metasurface polarization converter is designed in this Letter. The unit cell of the composed a butterfly-shaped structure whose branches are connected by multi-layer graphene sheets. proposed device can be reconfigured from linear-to-circular to cross-polarization changing Fermi energy graphene. simulation results show that for three-layer graphene, acts as when EF = 0 eV and switches 0.5 eV. Compared with single-layer maintain conversion performance under low energy....

The field of artificial intelligence and neural computing has been rapidly expanding due to the implementation resistive random-access memory (RRAM) based synaptic. However, low flexibility conventional RRAM materials hinders their ability mimic synaptic behavior accurately. To overcome such limitation, organic-2D composites with high mechanical properties are proposed as active layer RRAM. Moreover, we enhance reliability device by ZrO2 insertion layer, resulting in stable performance....

From the discovery of carbon nanotubes to ability prepare high-purity semiconductor in large quantities, large-scale fabrication nanotube transistors (CNT) will become possible. In this paper, a transistor featuring buried-gate structure, employing an etching process optimize surface flatness device and enhance its performance, is presented. This CNT thin-film has current switching ratio 104, threshold voltage around 1 V, mobility that can reach 6.95 cm2/V·s, indicating excellent electrical...

In this study, we fabricated flexible Ga2O3 photodetectors (PDs) based on Ga2O3/mica structures obtained at different substrate temperatures. Higher temperatures result in higher quality crystals for the film, but they also reduce photoresponsivity of PD. Meanwhile, dark current PD gradually decreases, and response time is significantly shortened. The 440 °C exhibited a responsivity 4.45 W/A 20 V bias weak UV illumination approximately 380 μW/cm2 (at 254 nm). It demonstrated high detectivity...

The use of BaTiO3 (BTO) ferroelectric thin films in flexible memory offers a promising pathway for next-generation nonvolatile applications, given BTO's excellent properties, stability, high dielectric constant, and strong fatigue resistance. However, the fabrication BTO on substrates presents significant technical challenge. In this study, we achieved high-quality, single-crystalline (111)-oriented mica through design buffer layers. exhibit polarization properties (remnant polarization, 2Pr...

BaTiO3 (BTO), a lead-free chalcogenide ferroelectric material, has emerged as promising candidate for memories due to its advantageous properties, notable flexibility, and mechanical stability, along with high dielectric constant minimal leakage. These attributes lay crucial foundation multi-value storage. In this study, high-quality thin films have been successfully prepared on STO substrates by pulsed laser deposition (PLD), Pt/BaTiO3/SrRuO3/SrTiO3 heterojunctions were finally combination...

Abstract We experimentally demonstrate a highly efficient, broadband linear polarization converter functioning at terahertz frequencies. The is composed of three metasurfaces and two dielectric layers interlaced with each other. neighboring unit cells the central metasurface layer exhibit strong electromagnetic coupling, which increases number resonances results in significant bandwidth broadening. simulation experimental show that frequency range 0.2 to 0.4 THz, proposed has flat...

In this paper, a multi-parameter integrated detection photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is proposed for its application in detecting temperature, magnetic field, and refractive index. The air holes both sides of the core were coated with gold film introduced to temperature-sensitive medium (PDMS) fluid (MF), temperature respectively. graphene layer also presented D-type side polished improve sensitivity. sensor’s critical parameters’ influence...

Reliability of nonvolatile resistive switching devices is the key point for practical applications next-generation memories. Nowadays, nanostructured organic/inorganic heterojunction composites have gained wide attention due to their application potential in terms large scalability and low-cost fabrication technique. In this study, interaction between polyvinyl alcohol (PVA) two-dimensional material molybdenum disulfide (MoS2) with different mixing ratios was investigated. The result...

In this paper, we propose a multi-channel photonic crystal fiber sensor, which adopts dual-polarization and multiple materials to effectively reduce the mutual interference between channels enhance surface plasmon resonance, thus achieving simultaneous detection of with low interference. Four are polished around cylindrical fiber, then different metal films (gold or silver) plasmonic (titanium dioxide, thallium pentoxide, graphene) added sensing area each channel. All detect refractive...

The optical properties and band structure evolution from amorphous to crystalline Ga2O3 films was investigated in this work. Amorphous were obtained by changing the growth substrate temperatures of pulsed laser deposition crystallinity increase with rising temperature. bandgap value ultraviolet emission intensity as observed means spectrophotometer cathodoluminescence spectroscopy. Abrupt CL variations when transition took place. X-ray photoelectron spectroscopy core level spectra reveal...

Two-dimensional (2D) materials, which have attracted attention due to intriguing optical properties, form a promising building block in and photonic devices. This paper numerically investigates tunable anisotropic perfect absorber graphene-black phosphorus (BP) nanoblock array structure. The suggested structure exhibits polarization-dependent absorption the mid-infrared, with maximum of 99.73% for x-polarization 53.47% y-polarization, as determined by finite-difference time-domain FDTD...

Two-dimensional materials resistive random-access memories (RRAMs) are known to exhibit excellent nonvolatile switching (NVRS) performance. However, most two-dimensional produced as monocrystal films with little attention paid their stacked, discontinuous, and loose polycrystal states, which may allow for more facile atomic diffusion. Here, we propose a liquid-phase self-assembly (LPSA) method fabricate stacked hexagonal boron nitride (h-BN) film (SHPF) demonstrate its NVRS behavior. Three...

Indium tin oxide (ITO) has been studied in applications at normal high temperature below 600 °C, due to excellently electrical characteristics. Attempts further match the needs of electronics extremely harsh environments, changes conductive properties ITO films and its mechanism were investigated special high-temperature above 1000 °C. prepared by pulsed laser deposition (PLA) on lanthanum gallium silicate (LGS) substrates. Furthermore, as-deposited samples annealed different...

We demonstrated a (GaIn)2O3 films based UV photodetector with planar photoconductor structure, and investigated the photoresponse properties of fabricated devices. The are ohmic contact Au/Ti electrode. photodetectors show relatively high photoresponsivity more than 0.1 A/W. turn-on wavelength varied from 285 to 315 nm increase indium content 0.25 0.49. were also further investigated. (−201) oriented monoclinic phase transmittance 90% in visible region smooth surfaces without separation....

In this paper, we propose a design of mid-infrared Metamaterial Absorber (MIMA). The MIMA is composed thin metamaterial nanostructure period array cross-circular structure Ti with continuum graphene layer and bottom film Al substrate, the middle dielectric stack Si <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> N xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> SiO xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> . coupling surface...

In this paper, the cylindrical, conical and parabolic nanostructures inherited from self-organized anodic aluminum oxide (AAO) are applied to silicon-based ultra-thin solar cells aiming for a new design concept low-cost, high-efficiency double-grating cells. Numerical results reveal that optimal bottom metal grating can enhance absorption capacity of cell at 0.5 µm–1.1 µm waveband with very small parasitic absorption. Meanwhile surface period 0.1 strongly in 0.3 µm–0.5 waveband....

Surface anti-reflection (AR) with micrometer or nanometer scaled surface texture has been studied extensively and showed excellent light extraction (or harvest) performance in corresponding opto-electronic devices. In this paper, a 2-inch anodized aluminum oxide (AAO) template nano/micro hybrid structure was obtained directly through simple lithography-free anodization process for the first time. This new combines advantages of sub-100 nm sub-wavelength (SWS) roughening. Aluminum grains were...

To achieve high performance and wide range detection, we propose an ultra-wide sensitivity plasmonic fiber optic sensor with a gold (Au) nanowire group array, which has both propagating surface plasmon resonance (PSPR) local (LSPR) sensing characteristics. The PSPR, LSPR, PSPR+LSPR are presented as Au thin layers, spheres (or nanowires), arrays, respectively, their respective properties analyzed from theoretical, simulated, numerical aspects. When detection is performed, the presence of...

In this study, we present a chiral metasurface structure based on graphene-Au elliptical hole arrays. Circular dichroism of up to 0.91 is achieved by varying the rotation angle hole. (CD) typically expresses response. The has excellent absorption right circularly polarized light while reflecting left light, and it theoretically analyzed using Jones matrix. By incorporating graphene between gold array dielectric, CD can be finely tuned. response decreases from 0.88 0.55 when Fermi energy...