Results 61 to 70 of about 23,063 (293)
Advanced Healthcare Materials, EarlyView.This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi +7 more
wiley +1 more source
MicromachinesA frequency up-conversion piezoelectric energy harvester (FUC-PEH) consists of a force amplifier, a piezoelectric stack, a low-frequency oscillator (LFO), and a stop limiter.
Xuzhang Peng +5 more
doaj +1 more source
A Novel Drive Option for Piezoelectric Ultrasonic Transducers
Modelling and Simulation in Engineering, 2011 This paper concentrates on ultrasonic transducers, which are driven by piezoelectric ceramic rings that are arranged in a stack. A novel drive option, where the stack contains a new type of divided piezoelectric rings, is analyzed using the finite ...
Diana Engelke +2 more
doaj +1 more source
Epidermal Patch Technologies for Integrated Healthcare and Infection Management
Advanced Healthcare Materials, EarlyView.Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang +7 more
wiley +1 more source
Distributed photonic instrumentation for smart grids [PDF]
, 2013 Photonic sensor networks possess the unique potential to provide the instrumentation infrastructure required in future smart grids by simultaneously addressing the issues of metrology and communications.
Beaumont, Phil +6 more
core +1 more source
Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application
Advanced Materials, EarlyView.This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong +12 more
wiley +1 more source
Journal of Low Frequency Noise, Vibration and Active ControlAn active micro-vibration isolation system for adaptive vibration suppression using piezoelectric stack actuators is presented, along with the discrete time modelling method, real-time adaptive controller design, and hardware implementation.
Zhiyuan Gao +3 more
doaj +1 more source
Vibration Attenuation by a Combination of a Piezoelectric Stack and a Permanent Magnet
Shock and Vibration, 2012 The present work proposes a non-contact vibration attenuator made up of a permanent magnet mounted on a piezoelectric stack. Two such actuators are made to work simultaneously in a 'twin-actuator' configuration.
A. Nandi +3 more
doaj +1 more source
Low insertion loss air-coupled ultrasonic transducer with parallel laminated piezoelectric structure
AIP Advances, 2020 This work presents a low insertion loss air-coupled ultrasonic transducer with a parallel laminated piezoelectric structure. The relevant parameters of this structure are theoretically analyzed.
Xiaoyu Wang +7 more
doaj +1 more source
Hot Pressed K0.5Na0.5NbO3 Material for Piezoelectric Transformer for Energy Harvesting [PDF]
Archives of Metallurgy and Materials, 2018 An optimized method of vibration Energy Harvesting is based on a step-down transformer that regulates the power flow from the piezoelectric element to the desired electronic load.
L. Kozielski +4 more
doaj +1 more source