Results 21 to 30 of about 1,177,542 (290)

Performance Dependence on Initial Free-End Levitation of a Magnetically Levitated Piezoelectric Vibration Energy Harvester With a Composite Cantilever Beam

open access: yesIEEE Access, 2017
Vibration energy harvesting by using piezoelectric materials provides a promising alternative solution for a wide range of self-powered systems. In this paper, performance dependence on initial freeend levitation position (IFLP) of a magnetically ...
Zhonghua Zhang   +5 more
doaj   +1 more source

Reversible Self-Actuated Thermo-Responsive Pore Membrane. [PDF]

open access: yes, 2016
Smart membranes, which can selectively control the transfer of light, air, humidity and temperature, are important to achieve indoor climate regulation. Even though reversible self-actuation of smart membranes is desirable in large-scale, reversible self-
Gutierrez, Maria Paz   +2 more
core   +2 more sources

A Dual-Chamber Serial–Parallel Piezoelectric Pump with an Integrated Sensor for Flow Rate Measurement

open access: yesSensors, 2019
A new concept of a dual-chamber serial-parallel piezoelectric pump with an integrated sensor (DSPPIS) is presented in this paper. By means of dividing a piezoelectric bimorph into an actuator and a sensor, sensing function is integrated onto the DSPPIS ...
Song Chen   +6 more
doaj   +1 more source

Delay-Optimal Relay Selection in Device-to-Device Communications for Smart Grid [PDF]

open access: yes, 2018
The smart grid communication network adopts a hierarchical structure which consists of three kinds of networks which are Home Area Networks (HANs), Neighborhood Area Networks (NANs), and Wide Area Networks (WANs).
Asuhaimi, Fauzun A.   +2 more
core   +1 more source

3D-Printed Soft Structure of Polyurethane and Magnetorheological Fluid: A Proof-of-Concept Investigation of its Stiffness Tunability

open access: yesMicromachines, 2019
In this study, a soft structure with its stiffness tunable by an external field is proposed. The proposed soft beam structure consists of a skin structure with channels filled with a magnetorheological fluid (MRF). Two specimens of the soft structure are
Seong-Woo Hong   +7 more
doaj   +1 more source

An Air Velocity Monitor for Coal Mine Ventilation Based on Vortex-Induced Triboelectric Nanogenerator

open access: yesSensors, 2022
Air velocity of coal mine ventilation is an important consideration that may cause serious damage. This paper proposes a simple, low cost and effective air velocity monitor (AVM) for coal mine ventilation.
Guocheng Shen   +5 more
doaj   +1 more source

Smart SQUIDs based on Relaxation Oscillation SQUIDs [PDF]

open access: yes, 1998
Smart SQUIDs based on double Relaxation Oscillation SQUIDs (DROS) and a superconducting up-down counter have been developed. DROS and counter form a flux locked loop on one single chip. The DROS output consists of a series of pulses that controls the two
Brons, G.C.S.   +3 more
core   +2 more sources

A Novel Linear Walking Type Piezoelectric Actuator Based on the Parasitic Motion of Flexure Mechanisms

open access: yesIEEE Access, 2019
A walking-type piezoelectric actuator based on the parasitic motion of flexure mechanisms is proposed in this paper. With the help of the parasitic motion of the asymmetrical flexure mechanism, the conventional walking-type piezoelectric actuator with ...
Jianming Wen   +5 more
doaj   +1 more source

Co-designing climate-smart farming systems with local stakeholders: A methodological framework for achieving large-scale change [PDF]

open access: yes, 2019
The literature is increasing on how to prioritize climate-smart options with stakeholders but relatively few examples exist on how to co-design climate-smart farming systems with them, in particular with smallholder farmers.
Acosta Alba, Ivonne   +8 more
core   +1 more source

Design and Experimental Performance of a Novel Piezoelectric Inertial Actuator for Magnetorheological Fluid Control Using Permanent Magnet

open access: yesIEEE Access, 2019
A piezoelectric inertial actuator for magnetorheological fluid (MRF) control using permanent magnet is proposed in this paper. The stable linear motion of the actuator with high controllability is obtained by integrating the piezoelectric vibrator and ...
Renming Wang   +5 more
doaj   +1 more source

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