Results 121 to 130 of about 19,687 (305)

Modeling Flaw Pulse-Echo Signals in Cylindrical Components Using an Ultrasonic Line-Focused Transducer with Consideration of Wave Mode Conversion

Sensors, 2019
Investigations on flaw responses can benefit the nondestructive testing of cylinders using line-focused transducers. In this work, the system function, the wave beam model, and a flaw scattering model are combined to develop an ultrasonic measurement ...
Weixin Wang, Xiling Liu, Xiongbing Li, Gang Xu, Shuzeng Zhang   +4 more
doaj   +1 more source

Piezoresistivity Enhancement by Graphite Flake Alignment in Thin Composite Films for Dielectric Elastomer Switches

Advanced Robotics Research, EarlyView.
This article presents dielectric elastomer switch (DES) materials, based on composite thin films. Alignment of graphite flakes due to their physical confinement within the thin films lead to much stronger piezoresistive responses than bulk composites, while their durability exceeds that of conventional liquid‐based DES materials.
Lingyu Liu, Thomas Kister, Bart‐Jan Niebuur, Tobias Kraus   +3 more
wiley   +1 more source

Performance Improvement of High Frequency Aluminum Nitride Ultrasonic Transducers [PDF]

, 2013
This paper presents three methods to improve the performance of a high frequency aluminum nitride (AlN) ultrasonic transducer. For a high frequency AlN ultrasonic transducer, its properties are related with its top electrode size, electrical impedance ...
Wei YJ(魏阳杰), Heuer, Henning, Herzog, Thomas   +2 more
core  

Electromagnetic acoustic transducers [PDF]

, 2022
S.326-340The electromagnetic acoustic transducers (EMAT) is a device for the excitation and detection of ultrasonic waves in conductive or magnetic materials.
Alers, G., Hübschen, G., Salzburger, H.J., Repplinger, W., Wilbrand, A., Thompson, B., Maxfield, B.   +6 more
core  

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source

Investigation on electrode size of high frequency ultrasonic transducers [PDF]

, 2012
This paper presents a concept to increase the performance of high frequency ultrasonic transducers. For a sandwich high frequency ultrasonic transducer, the top electrode should be smaller than the piezoelectric plate to avoid shortcuts and edge effects.
Henning Heuer, Wei YJ(魏阳杰), Thomas Herzog   +2 more
core  

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

Gradient piezoelectric composites for ultrasonic transducer design and imaging applications

Journal of Materiomics
Ultrasonic imaging technology has advanced rapidly, the escalating demand for imaging quality has driven the continuous development of ultrasonic transducers featuring high-performance. Among them, the crucial factors constraining the further enhancement
Chenxue Hou, Zhaoxi Li, Chunlong Fei, Qibo Lin, Xiaofei Luo, Xiongwei Wei, Yiheng Yang, Qi Lu, Yi Quan, Guangzhi Dong, Zeyu Chen, Xiaozhou Lü, Weimin Bao, Yintang Yang   +13 more
doaj   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

Advanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis, Luis Carlos Sanjuan Acosta, Shubh P. Mehta, Baiyan Qi, Yang Yang, Luis Solorio, Craig J. Goergen, David J. Cappelleri   +7 more
wiley   +1 more source