Strain sensors with wide-range stretchability, good sensitivity, high gauge factor, and reliability are needed for several applications. Herein, stretchable strain capable of operating over multi-strain range having an excellent factor presented. The systematic study, carried out different combinations elastomer, conductive filler, graphene–carbon paste (GCP), revealed that the exhibit stretcha...

In order to solve the problem of contact high temperature strain precision measure-ment, this paper established an automatic calibration device for gauges. The furnace was automatically con-trolled by control device. electric cylinder driven servo motor apply load beam. output signal gauge, thermocouple and displacement grat-ing ruler were collected at same time. deformation measurement results...

We report the strong dependence of resistance on uniaxial strain in monolayer WSe2 at various temperatures, where gauge factor can reach as large 2400. The observation strain-dependent and giant is attributed to emergence nonzero Berry curvature dipole. Upon increasing strain, dipole generate net orbital magnetization, which would introduce additional magnetic scattering, decreasing mobility th...

Introduction: The purpose of the present study was to record their pain sensation and to assess children`s reaction objectively and subjectively while receiving dental local anesthesia with 27- and 30-gauge needles. Methods: Forty children (24 boys and 16 girls) participated in this study. A random double-blinded crossover design was used so that each child served as his or her own control, rec...

Measurements of the curvatures and warpages of a printed circuit board (PCB) during a thermal solder reflow process using strain gauges are proposed in this study. In the experiments, a shadow moiré is used for measuring the out-of-plane deformations (or warpage) of a bi-material plate and a PCB with dual in-line memory module (DIMM) sockets during solder reflow heating, while the finite elemen...

Strain sensors based on individual ZnO piezoelectric fine-wires (PFWs; nanowires, microwires) have been fabricated by a simple, reliable, and cost-effective technique. The electromechanical sensor device consists of a single electrically connected PFW that is placed on the outer surface of a flexible polystyrene (PS) substrate and bonded at its two ends. The entire device is fully packaged by a...

The stress on a test specimen during tensile testing is generally measured by a strain gauge. This method has some problems in that it would influence the measurement conditions of the tensile test and can evaluate only the position at which the strain gauge is attached. The acoustoelastic method is proposed as a method replacing the strain gauge method. However, an ultrasonic sensor with a pie...