In this work, surface engineering is applied to polyimide (PI) films fabricate low-cost Ag/PI wireless humidity sensors with a resonant frequency of 2.45 GHz. The were obtained by in situ metallization technique coupled inkjet printing, where PI plays triple roles as flexible substrate, ion-exchange surface, and sensing material moisture. Moreover, the sensitivity can be enhanced improvement hydrophilicity via loading different ions on which has been demonstrated Fourier transform infrared...

AbstractThe wireless system with four coil resonators is a popular configuration for mid-range power transfer (WPT) via magnetic resonance coupling. The design parameters of coils have strong impact on efficiency, bandwidth, and distance the WPT system. In this work, comprehensive study effects shapes conducted. particular, helix coils, planar spiral square are studied. It shown that offer best performance (e.g. highest widest longest distance) under optimal load whereas exhibit worst among...

Carbon-based conductive inks are one of the most important materials in field printing electronics. However, carbon-based with small electrical resistance expensive, such as graphene. It limits commercial use carbon fields flexible electronics and printed Here, we propose a low-cost environmentally friendly formula based on dihydroxyphenyl-functionalized multi-walled nanotubes (MWNT-f-OH)/carbon black/graphite fillers waterborne acrylic resins binders for preparing highly aqueous...

The strain effect on graphene‐encapsulated Au nanoparticles is investigated. A finite‐element calculation performed to simulate the distribution and morphology of monolayer multilayer nanoparticles, respectively. It can be found that inhomogeneous deformation are enhanced with increasing shrinkage graphene shell. Moreover, very sensitive layer number Especially, at interface between shell encapsulated strongly tuned by thickness. For mono‐ bilayer dramatic shape transformation observed....

Abstract With the progress of wearable electronics during last decades, many approaches have been explored in flexible actuators, which advantages highly deformable, conformal with arbitrary surface, safe and human-friendly. A electrothermal actuator based on an ultra-thin Ag heating pattern is fabricated by cost-efficient In-situ metallization inkjet-printing process. By in-situ technique, nanoparticles are embedded PI layer, leading to a good-quality interface between layers. As result,...

We describe a single step route for the synthesis of MoS₂ wires using chemical vapour deposition (CVD) method.

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Cailei Yuan, Shuangli Ye, Bo Xu, Wen Lei; Strain induced tetragonal SrTiO3 nanoparticles at room temperature. Appl. Phys. Lett. 13 August 2012; 101 (7): 071909. https://doi.org/10.1063/1.4747204 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex...

High on-current field effect transistors (FETs) are highly desirable for driving information displays such as active matrix organic light-emitting diode displays.

The electrical resistivity, magnetization, and magnetoresistance effect have been studied on a series of Zn-doped polycrystalline samples Fe1−xZnxCr2S4 (0⩽x⩽1) with spinel structure over wide range composition temperature. It is found that the magnetism ratio are anomalous, which do not change monotonically substituting nonmagnetic Zn2+ ions in place Fe2+ ions. Considering applied magnetic field substitution by small polarons transport property, anomalous can be explained.

In this work, nanoflower-like MoS 2 grown on the surface of multi-walled carbon nanotubes (MWCNTs)/polyaniline (PANI) nano-stem is synthesized via a facile in situ polymerization and hydrothermal method. Such novel hierarchical structure commendably promotes contact PANI electrolyte for faradaic energy storage. meanwhile, double-layer capacitance effectively used. The morphology chemical composition as-prepared samples are characterized by scanning transmission electron microscopies, X-ray...

The influence of compressive strain on the deformation GaAs nanoparticles embedded in different host matrices is investigated. simulation results indicate that it can be easier to deform grown an Al2O3 film than those SiO2 film. induced by applied has significant shape, size and microstructure nanoparticles. Most significantly, these simulated have a good agreement with HRTEM experimental results.

An updated B-scan method is proposed for measuring the evolution of thermal deformation fields in polymers. In order to measure distributions out-of-plane and normal strain field, phase-contrast spectral optical coherence tomography (PC-SOCT) was performed with depth range resolution 4.3 mm 10.7 μm, respectively, as loads were applied three different multilayer samples. The relation between temperature material refractive index predetermined before measurement. After accounting index,...

In this work, the silver films with tuned morphologies have been fabricated on flexible polyimide substrate by in situ direct-ion-exchange technique. The morphology of Ag loose nanoparticles, dense polyhedrons, aggregated nanoparticle clouds, and dendrite structure can be obtained a controlled reduced process as illustrated scanning electron microscopy (SEM) optical microscopy, respectively. All show good crystalline high conductivity, which is confirmed X-ray diffraction (XRD) four-point...

This article presents a cost-efficient flexible chipless radio frequency identification (RFID) tag with wireless humidity sensing, which is fabricated by in situ metallization and inkjet printing techniques. The technique applied to print the mask for RFID antenna, designed frequency-encoding simulation high-frequency structure simulator (HFSS). A high-quality patterned Ag antenna realized of polyimide (PI) film, leading strong adhesion between PI substrate. consists three parallel dipole...

Depth resolution of depth-resolved interferometry evaluated by Fourier transform is limited the range phase shifting. A novel algorithm, eigenvalue decomposition and least squares algorithm (EDLSA), proposed. Experimental results obtained using wavenumber-scanning demonstrate that EDLSA performs better than complex number algorithm. Not requiring any a priori information, can replace in with improved depth resolution.

GaAs nanocrystals embedded in amorphous Al2O3 thin film are fabricated using pulsed laser deposition and rapid thermal annealing methods. Enhanced charge storage properties of strained high-k dielectric observed. The nanocrystal experiences substantial compressive strain from the matrix, which is revealed by finite element calculations. defects associated with interfaces can capture charges serve as centers, causing improvement performance. Therefore, these results demonstrate that traps...