Accurate transmission of biosignals without interference surrounding noises is a key factor for the realization human-machine interfaces (HMIs). We propose frequency-selective acoustic and haptic sensors dual-mode HMIs based on triboelectric with hierarchical macrodome/micropore/nanoparticle structure ferroelectric composites. Our sensor shows high sensitivity linearity under wide range dynamic pressures resonance frequency, which enables frequency selectivity in (145 to 9000 Hz), thus...

Amorphous InGaZnO semiconductors have been rapidly developed as active charge-transport materials in thin film transistors (TFTs) because of their cost effectiveness, flexibility, and homogeneous characteristics for large-area applications. Recently, InZnSnO (IZTO) with superior mobility (higher than 20 cm2 V–1 s–1) has suggested a promising oxide semiconductor material high-resolution, displays. However, the electrical physical IZTO not fully characterized. In this study, films were grown...

Flexible pressure sensors have been widely explored for their versatile applications in electronic skins, wearable healthcare monitoring devices, and robotics. However, fabrication of with characteristics such as high sensitivity, linearity, simple process remains a challenge. Therefore, we propose herein highly flexible sensitive sensor based on conductive binary spiky/spherical nanoparticle film that can be fabricated by spray-coating method. The sea-urchin-shaped spiky nanoparticles are...

Stretchable sound-in-displays, which can generate synchronous sound and light directly from the display without a separate speaker, allow immersive audio visual perception even on curved surfaces. In stretchable alternating current electroluminescent (ACEL) devices have been used as light-emitting sources owing to their high brightness stability. However, ACEL that use low dielectric constant (κ) materials require operating voltage for generating sound. Herein, we demonstrate loudspeaker...

The interfacial properties of organolead halide perovskite solar cells (PSCs) affect the exciton and charge-transport dynamics significantly. Thus, proper modification interfaces between layers is an efficient method to increase power conversion efficiency (PCE) PSCs. In this work, we explore effect a nonionic surfactant, that is, Triton X-100 (TX) additive, in poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) hole-transport layer. electronic structure TX-modified PEDOT:PSS...

Abstract 2D transition metal dichalcogenides (TMDs) have been extensively studied due to their excellent physical properties. Mixed dimensional devices including materials also studied, motivated by the possibility of any synergy effect from unique structures. However, only few such studies conducted. Here, semiconducting 1D ZnO nanowires are used as thin gate material support TMD field transistors (FETs) and stack‐based interface trap nonvolatile memory. For memory, deep level electron...

Abstract The growing importance of human–machine interfaces and the rapid expansion internet things (IoT) have inspired integration displays with sound generation systems to afford stretchable sound‐in‐display devices thus establish human‐to‐machine connections via auditory system visualization. Herein, synchronized color is demonstrated for a device electrodes strain‐insensitive silver nanowires (AgNWs) emissive layers field‐induced inorganic electroluminescent (EL) phosphors. In this...

In organolead halide perovskite solar cells (PSCs), interfacial properties between the and charge transport layers are critical factors governing extraction efficiency. this study, effect of energetics two-step spin-coated methylammonium lead iodide (MAPbI3) with different (MAI) concentrations C60 on efficiency is investigated. The electronic structures films significantly varied by MAI due to changes in residual precursor MA+ defect content. As compared optimum PSCs 25 mg mL-1 MAI, other...

Molybdenum disulfide (MoS2) has been regarded as one of the most important n-type two-dimensional (2D) transition metal dichalcogenide semiconductors for nanoscale electron devices. Relatively high contact resistance (RC) remains an issue in 2D-devices yet to be resolved. Reliable technique is very compelling practically produce low RC values device electronics, although scientific approaches have made obtain a record-low RC. To resolve this practical issue, we here use thermal-evaporated...

Abstract Elastomers show improved properties when reinforced with nanoclay at low filler loadings, but dispersion of the clay is difficult in non‐polar polymers, such as ethylene propylene diene monomer (EPDM). In this work several compatibilization approaches were studied, including addition EPDM modified maleic anhydride (EPDM‐ g ‐MA) and use organoclay anhydride‐grafted liquid vinyl polybutadiene (LVPB‐ ‐MA). The LVPB‐ ‐MA‐modified increased degree measured by X‐ray diffraction, giving...

SnO x thin films were successfully deposited by the thermal atomic layer deposition (ALD) method using N, N'- tert-butyl-1,1-dimethylethylenediamine stannylene(II) as a precursor and ozone water reactants. The growth of SnO2 could be easily controlled employing different reactants utilizing concentrations, respectively. formation both exhibited typical surface-limiting reaction characteristics, although their behaviors differ from one another. combined studies density functional theory...

Film-type shape-configurable speakers with tunable sound directivity are in high demand for wearable electronics. Flexible, thin thermoacoustic (TA) loudspeakers-which free from bulky vibrating diaphragms-show promise this regard. However, configuring TA loudspeakers into arbitrary shapes is challenging because of their low pressure level (SPL) under mechanical deformations and conformability to other surfaces. By carefully controlling the heat capacity per unit area thermal effusivity an...

Thermoacoustic (TA) loudspeakers have garnered significant attention in recent times as a novel film speaker that utilizes temperature oscillation to vibrate the surrounding air. Conventional film-type TA are known experience problems when external environments damage their conductive networks, causing them malfunction. Therefore, introducing self-healing polymers could be an effective way restore surface of networks. In this study, we present transparent, flexible, and self-healable based...

Abstract Conventional acoustic sensors used in human–machine interfaces often face challenges such as power supply requirements, limited sensitivity, and inability to tune their frequency response. A self‐powered, highly sensitive, frequency‐tunable triboelectric sensor inspired by the human cochlea is introduced. By mimicking hair cells organ of Corti, a tapered microhair‐structured ferroelectric poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) barium titanate nanoparticle (BTNP)...

2D crystals can serve as templates for the realization of new van der Waals (vdW) heterostructures via controlled assembly low-dimensional functional components. Among available crystals, black phosphorus (BP) is unique due to its puckered atomic surface topography, which may lead strong epitaxial phenomena through guided vdW assembly. Here, it demonstrated that a BP template induce highly oriented C60 molecular crystals. Transmission electron microscopy and theoretical analysis /BP...

Two-dimensional (2D) transition metal dichalcogenide (TMD) hetero PN junctions with a van der Waals (vdW) interface have received much attention, because diodes are basically important to control the vertical current across junction. Interestingly, same vdW junction structure can be utilized for field-effect transistors (JFETs) where in-plane is controlled along However, 2D JFETs seem rarely reported, despite their own advantages achieve when good secured. Here, we present high-performance...

Abstract Two-dimensional Ruddlesden–Popper (2DRP) perovskites are promising owing to their excellent environmental stability and competitive efficiency. During the fabrication process, 2DRP were often unintentionally exposed light in laboratory. However, influence of illumination on surface structure during is unclear. Herein, photodegradation perovskite (phenethylammonium lead iodide, PEA 2 PbI 4 ) comprehensively investigated using x-ray photoelectron spectroscopy, scanning electron...

To dope 2D semiconductor channels, charge-transfer doping has generally been done by thermal deposition of inorganic or organic thin-film layers on top the channel in bottom-gate field-effect transistors (FETs). The effects are reproducible most cases. However, such will damage surface channels due to kinetic energy depositing atoms, causing hysteresis certain degradation. Here, a more desirable process is suggested. A damage-free conducted for MoTe2 (or MoS2 ) using polydimethylsiloxane...