Results 71 to 80 of about 1,985,820 (299)

Study on loaded condition characteristics of piezoelectric actuator

Nihon Kikai Gakkai ronbunshu, 2014
A stacked piezoelectric actuator is used for precision positioning because of high resolution, large generative force and high responsiveness. When piezoelectric actuators are used in the positioning mechanism it is usually used in compressive pre-load ...
Hiroki URABE, Nobuhiko HENMI
doaj   +1 more source

Fiber‐reinforced Liquid Metal Composites With Automated Circuit Fabrication for Structurally‐Integrated Power Transfer

Advanced Functional Materials, EarlyView.
Fiber‐reinforced liquid metal composites (FibRe LMCs) are introduced that combine GPa‐scale structural performance with digitally programmable electrical conductivity. Through automated CNC activation, conductive pathways and wireless power transfer circuits are fabricated directly within load‐bearing composites, enabling structurally integrated ...
John Joyce, Charles K. Van Horn, Nathaniel J. Valentin, Angelica Phan, Michael D. Bartlett, Edward J. Barron III   +5 more
wiley   +1 more source

On-line moisture measurement of rocks, using microwave techniques [PDF]

, 1989
Includes bibliographical references.On-line measurement of the moisture content of process streams in a mineral processing plant is vital for their efficient operation.
Celliers, Scarre
core   +1 more source

Design and Analysis of a Novel Compact High Permittivity Dielectric Resonator Antenna

, 2008
A very compact and efficient dielectric resonator antenna is proposed and investigated. The novel structure is analyzed using two numerical methods and design guidelines are established.
Sykulski, J. K., Rotaru, M. D.
core   +1 more source

Finite Element Analysis for Complex Permittivity Measurement of a Dielectric Plate and Its Application to Inverse Problem [PDF]

The resonant frequency and unloaded quality factor of a cylindrical cavity resonator are computed accurately by using the axisymmetric finite element method. Here the loss of both a dielectric sample and a shielding conductor is taken into account.
HAYASHI, Yoshio, HIRAYAMA, Koichi
core   +1 more source

Imaging the Thickness‐Dependent Formation of Schottky Barriers in Metal–Semiconductor van der Waals Heterostructures

Advanced Functional Materials, EarlyView.
Using nanobeam photoemission, we demonstrate imaging of the in‐plane and out‐of‐plane electric field landscape within a metal–semiconductor van der Waals heterostructure. We provide evidence for Schottky barrier formation that depends on the semiconductor thickness. ABSTRACT Achieving high‐performance optoelectronic devices based on two‐dimensional van
Dario Mastrippolito, Mariarosa Cavallo, Marco Paye, Clement Gureghian, Albin Colle, Jiho Roh, Dipak Maity, Clemence Villefroy, Erwan Dandeu, Herve Cruguel, Stephane Lorcy, Marie Hervé, James K. Utterback, Pavel Dudin, Johan Biscaras, José Avila, Emmanuel Lhuillier, Debora Pierucci   +17 more
wiley   +1 more source

Self‐Assembled Lipids as Soft Dielectrics

Advanced Functional Materials, EarlyView.
Self‐assembled lipid bilayers serve as soft dielectric materials for ultrathin electronics. Using liquid‐metal parallel‐plate junctions, the capacitance and dielectric breakdown of dehydrated lipid films are characterized. Dielectric behavior is controlled by lipid molecular structure, cholesterol content, and assembly conditions, providing molecular ...
Hao Yang, Yiding Li, Jitong Ren, Yu Shi, Charles M. Schroeder   +4 more
wiley   +1 more source

Variación de los parámetros eléctricos de la arena con la frecuencia

Ingeniería e Investigación, 2012
Este artículo presenta los resultados de dos tipos de pruebas hechas a una clase de arena para obtener los valores de resistividad y permitividad eléctricas en el rango de los Hz hasta los MHz.
Oscar Germán Duarte Velasco, John Edwin Candelo Becerra, Johny Hernan Montaña Chaparro   +2 more
doaj  

Design and Characterization of a Two‐Dimensional Soft Array Based on Cooperative Dielectric Elastomer Actuators

Advanced Functional Materials, EarlyView.
A fully polymeric two‐dimensional array of Dielectric Elastomers enables self‐sensing, cooperative actuation, and large‐stroke operation in a DE‐based autonomous conveyor. Based only on voltage and current measurements at actuator level, the system detects the presence of a ball and subsequently drives it toward a target position.
Saverio Addario, Alberto Priuli, Giovanni Soleti, Sebastian Gratz‐Kelly, Benjamin Zemlin, Stefan Seelecke, Gianluca Rizzello   +6 more
wiley   +1 more source

Varactor-Based Tunable Sensor for Dielectric Measurements of Solid and Liquid Materials

Journal of Sensor and Actuator Networks
In this article, a tunable RF sensor is presented for the measurement of dielectric materials (liquids and solids) based on a metamaterial resonator. The proposed novel configuration sensor has a microstrip line-loaded metamaterial resonator with tunable
Waseem Shahzad, Weidong Hu, Qasim Ali, Ali Raza Barket, Gulab Shah   +4 more
doaj   +1 more source