Results 81 to 90 of about 19,264 (300)

Linear Drive of Non-Linear Piezoelectric Actuators.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1994
Piezoelectric ceramics are ferroelectric, and are fundamentally nonlinear in their response to the applied voltage signal, showing a significant hysteretic loop. This paper deals with the linear drive of nonlinear piezoelectric ceramic actuators. It is shown that the expansion of a ceramic actuator can be approximated by a third-order polynomial in the
Jiang, Zhong-Wei, Chonan, Seiji, Yamamoto, Takashi, Fuda, Yoshiaki   +3 more
openaire   +2 more sources

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

Analysis of small scale electrostatic linear actuation

, 2018
The use of electrostatic forces for millimeter-scaled linear actuation is explored through simulated application. Typically used in MEMs, the increased scaling in size of electrostatic devices leads to diminishing accelerations for actuation, as the ...
Fraga, Daniel James
core  

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Energy Efficiency of Pulsed Actuations on Linear Resonators [PDF]

IEEE Transactions on Circuits and Systems I: Regular Papers, 2009
The objective of this paper is to show that under some circumstances, the sign of a sampled sinusoid sequences, briefly , is optimal to provide maximum energy transfer to linear resonators in the context of discrete-time pulsed actuation at periodic times with bounded sequences.
openaire   +3 more sources

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

Advanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco, Valerio Francesco Annese, Valerio Galli, Ilaria Penna, Debora Russo, Marina Veronesi, Rita Scarpelli, Stefania Sabella, Mario Caironi   +8 more
wiley   +1 more source

Linear genetic programming control for strongly nonlinear dynamics with frequency crosstalk

Archives of Mechanics, 2018
We advance Genetic Programming Control (GPC) for turbulence flow control application building on the pioneering work of [1]. GPC is a recently proposed model-free control framework which explores and exploits strongly nonlinear dynamics in an ...
R. Li, B. Noack, L. Cordier, J. Borée, E. Kaiser, F. Harambat   +5 more
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

Modelling and performance enhancement of a linear actuation mechanism using conducting polymers

, 2011
In this paper, we report on our investigation into modelling and performance enhancement of a linear actuation system based on cantileveredtype conducting polymer actuators, which can operate in air and aqueous media.
Elise T Burriss (20220897), Geoffrey Spinks (19585351), Scott McGovern (20123154), Gursel Alici (19585951)   +3 more
core  

Optimized design and performance testing of hydraulic electrostatic actuator

International Journal of Smart and Nano Materials
Hydraulic electrostatic actuators have become a research hotspot for their inherent flexibility and safety of human-machine interaction. This paper aims to combine the characteristics of dielectric elastomers and fluid actuators, enhancing the dielectric
Yuze Ye, Qingsong He, Changli Yang, Xiaodong Xu, Lin Xie, Diyi Liu, Bo Zeng, Zhijian Leng   +7 more
doaj   +1 more source