Results 41 to 50 of about 439 (222)

Piezoresponse amplitude and phase quantified for electromechanical characterization [PDF]

, 2020
Piezoresponse force microscopy (PFM) is a powerful characterization technique to readily image and manipulate the ferroelectric domains. PFM gives an insight into the strength of local piezoelectric coupling and polarization direction through PFM ...
Tselev, Alexander, Sergei V. Kalinin, Alexander Tselev, Martin, Lane W, Stephen Jesse, Nina Balke, Balke, Nina, Sahar Saremi, Kalinin, Sergei V, Jesse, Stephen, Neumayer, Sabine M, Lane W. Martin, Collins, Liam, Liam Collins, Saremi, Sahar, Sabine M. Neumayer   +15 more
core   +1 more source

Sensor-less parameter estimation of electromagnetic actuator for shunt damping

Nihon Kikai Gakkai ronbunshu, 2015
Electromagnetic shunt damping is a sensor-less passive damping technique using an electromagnetic actuator. The accurate values of the parameters of the system are essentially required for designing a controller in the damping technique.
Toru IKEGAME, Kentaro TAKAGI, Tsuyoshi INOUE, Ichiro JIKUYA   +3 more
doaj   +1 more source

Parametric Study of Bolt Clamping Effect on Resonance Characteristics of Langevin Transducers with Lumped Circuit Models

Sensors, 2020
We recently proposed a numerical model using equivalent circuit models to analyze the resonance characteristics of Langevin transducers and design them in a systematic manner. However, no pre-load torque biased by a metal bolt was considered in the model.
Jinhyuk Kim, Jungwoo Lee
doaj   +1 more source

Figure of Merit Enhancement of Laterally Vibrating RF-MEMS Resonators via Energy-Preserving Addendum Frame

Micromachines, 2022
This paper examines a new technique to improve the figure of merit of laterally vibrating RF-MEMS resonators through an energy-preserving suspended addendum frame structure using finite element analysis. The proposed suspended addendum frame on the sides
Temesgen Bailie Workie, Zhaohui Wu, Panliang Tang, Jingfu Bao, Ken-ya Hashimoto   +4 more
doaj   +1 more source

The Simulation of Resonant Mode and Effective Electromechanical Coupling Coefficient of Lithium Niobate Crystal with Different Orientations

Journal of Physics: Conference Series, 2020
Abstract At present, the proportion and role of thin film bulk acoustic wave (FBAR) filters in mobile communication products are becoming more and more obvious due to its higher work frequency and smaller size. As a commonly used piezoelectric material, aluminum nitride (AlN) limits the bandwidth of the FBAR filter because of its small ...
Xiaoyuan Bai, Yao Shuai, Wenbo Luo, Chuangui Wu, Wanli Zhang   +4 more
openaire   +1 more source

The effect of IPMC parameters in electromechanical coefficient based on equivalent beam theory

, 2008
“Effective” electromechanical coupling coefficient for IPMC by equivalent bimorph beam model is studied. The collective effect of the membrane thickness and operating voltage is demonstrated by using a design of experiment of three and four levels of ...
Yusuf Menceloglu, Menceloğlu, Yusuf Z., Papila, Melih, Melih Papila, Çilingir, Halime Didem, Halime Didem Çilingir   +5 more
core   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

Advanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Electrified Damage in Motion Systems

Advanced Engineering Materials, EarlyView.
The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir, Angelina Nguyen, Hong Liang   +2 more
wiley   +1 more source

Influence of aspect ratio on effective electromechanical coupling of nanocomposites with lead zirconate titanate nanowire inclusion

, 2011
Piezoelectric ceramics offer exceptional sensing and actuation properties, however, they are prone to breakage and are difficult to apply to curved surfaces in their monolithic form.
Yirong Lin, Henry A. Sodano, Haixiong Tang, Clark Andrews   +3 more
core   +1 more source