In this work, we develop a flexible capacitive pressure sensor with simple structure, low cost, wide operating range, excel repeatability and high sensitivity. The greatly reduces cost while maintaining performance by using method of preparing the dielectric layer inexpensive chemical materials. has dynamic response (80ms) recovery (55ms) combines sensitivity (0.3199kPa^−1, < 10kPa) range (0.1-65 kPa). It is capable stable operation for 1400 cycles. addition, large...

Hydrogel sensors have attracted a lot of attention due to their great significance for biosensors and human detection, especially antibacterial properties when in direct contact with the body. However, it is challenging improve mechanical performance simultaneously. In this study, by using ultrasonic dispersion technology attach zinc oxide cellulose adding sodium alginate, multiple cross-linking network generated, which effectively solves problem. The proposed poly(vinyl alcohol)/sodium...

A film sensor decorated with branch-shaped carbon nanofibers possessing extra branches achieves high sensitivity, good linearity, a wide sensing range, fast response time, and great durability.

The proliferation of novel technologies like virtual reality, health monitoring has sparked a surge in demand for wearable devices, electronic skin, and other cutting-edge technologies. Flexible pressure sensors serve as essential components that have attracted considerable interest. Most current flexible require external power sources complex structures, presenting obstacles when utilized on the surface human body. This study introduces sensor based electrospinning electrochemical...

Abstract Optical surface measurement and characterization precision are significantly influenced by the performance of registration methods. Most existing optical methods suffer from poor efficiency or lower precision. To address these challenges, this investigation proposes a hierarchical method based on meta - heuristic algorithm, primarily targeting freeform grid surfaces(relatively simple non-rotationally symmetric surfaces) rotationally surfaces in applications. First, to enhance avoid...

In high speed and precision machining applications, it is important to monitor the process in order ensure product quality. For this purpose, essential develop a dynamometer with sensitivity natural frequency which suited these conditions. This paper describes design, calibration performance of milling torque sensor based on piezoresistive MEMS strain. A detailed design study carried out optimize two mutually-contradictory indicators frequency. The developed principally consists thin-walled...

Abstract Hydrogel, as a sensitive element of flexible sensor, can change its resistance or capacitance according to mechanical deformation and provide critical service for the Internet Things (IOT). However, it is challenge fabricate hydrogel that simultaneously possesses excellent properties great conductivity via low‐cost simple method. Herein, one‐pot solution‐casting methods were adopted film efficiently. Phosphoric acid (H 3 PO 4 ) plays role both proton source plasticizer improves...

Hydrogel, as a promising material for wide range of applications, has demonstrated considerable potential use in flexible wearable devices and engineering technologies. However, simultaneously realizing the ultrastretchability, low hysteresis, high toughness hydrogels is still great challenge. Here, we present dual physically cross-linked polyacrylamide (PAM)/sodium hyaluronate (HA)/montmorillonite (MMT) hydrogel. The introduction HA increases degree chain entanglement, addition MMT acts...

Phytic acid/Tannic acid enhanced ‘green’ multifunctional hydrogel with ultra-high strength and antibacterial properties is applied to flexible sensors.

This work introduces a PVA/xanthan/silica/LiCl/glycerol-based conductive ionic hydrogel for broad-temperature applications, including human movement monitoring and deep-learning-enhanced handwriting interaction.

A strain-type three-component table dynamometer is presented in this paper, which reduces output errors produced by cutting forces imposed on the different milling positions of a workpiece. sensor structure with eight parallel elastic beams proposed, and sensitive regions Wheastone measuring circuits are also designed consideration eliminating influences eccentric forces. To evaluate decoupling performance, both static calibration dynamic test were implemented Static experiment results...

Flexible pressure sensors have garnered significant attention in wearable electronics and human–machine interaction due to their biocompatibility adaptability. However, these encounter challenges achieving high sensitivity a wide detection range while maintaining simple inexpensive fabrication methods. In this study, we propose skeletal dilution strategy fabricate the polydimethylsiloxane (PDMS) foam with porous structure serve as dielectric layer for flexible capacitive sensor (CPS). This...

A photonic crystal fiber (PCF) sensor based on surface plasmon resonance with a gold film coating is designed and investigated for detecting the analytes low refractive index (RI). The critical geometry parameter optimized by finite element method to increase sensitivity of sensor. An open-ring structure 70-nm-thickness coated inner located left right sides PCF sensor, its angle equal or greater than 90 deg. spectral amplitude sensitivities are numerically calculated evaluate sensing...

An integrated multifunction micro-sensor for three-dimensional micro-force precision measurement under different pressure and temperature conditions is introduced in this paper. The sensor consists of three kinds sensors: a sensor, an absolute sensor. fabricated on silicon wafers by micromachining technology. Different doping doses boron ion, placement structure resistors are tested the force to minimize cross interference optimize properties. A glass optical fiber, with ladder sharp tip...

This paper presents series three-axis micro-force sensors which are based on piezoresistive effect. The structure of these include two critical parts, one central mesa suspended by four single-crystal-silicon sensing beam and quartz optical fiber probe with ladder structure. By changing the length probe, we can get different sensitivety measurement range. experiment results demonstrate that linearity is very good. These will be used in many fields.

Abstract A high-sensitivity three-core photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is proposed in this paper. The gold film selected as the plasmonic metal and coated outside of PCF to excite SPR phenomenon. There are three different diameter air holes d1, d2, d3 distributed cross-section sensor. Among them, performance can be affected by changing central hole thickness film. shows maximum confinement loss value spectral sensitivity 50 dB cm −1 30600 nm RIU ,...