Results 231 to 240 of about 2,664,170 (292)

Epitaxially Integrated Electro‐Optic KNbO3 Thin Films on Silicon

Advanced Materials, EarlyView.
We demonstrate the first epitaxial integration of electro‐optic KNbO3 thin films on silicon using suboxide molecular‐beam epitaxy. Combining adsorption‐controlled molecular‐beam epitaxy, advanced characterization, and phase‐field modeling, we demonstrate phase‐pure crystalline films mirroring bulk crystals with robust Pockels response, enabling future ...
Sankalpa Hazra, Tobias Schwaigert, Yingxin Zhu, Aiden Ross, Muhammad Aminul Haque Chowdhury, Shun‐Li Shang, Sameer Singh, Zhiyu Zhang, Zhe Wang, Brynn Brower, Saugata Sarker, Suchismita Sarker, Zi‐Kui Liu, Rama K. Vasudevan, Long‐Qing Chen, Yang Yang, Darrell G. Schlom, Venkatraman Gopalan   +17 more
wiley   +1 more source

TPMS-based auxetic structure for high-performance airless tires with variable stiffness depending on deformation. [PDF]

Sci Rep
Kim DY, Kim HS, Kamath SS, Hou X, Choi JW, Park SH.   +5 more
europepmc   +1 more source

Achieving High Spatial Resolution Transmission Electron Microscopy Studies in Closed Liquid Cells

Advanced Materials, EarlyView.
Achieving high spatial resolution is important for resolving nanoscale dynamic processes and structural transformations in liquid environments, yet remains challenging in liquid cell transmission electron microscopy (LCTEM). This review highlights key strategies, including mitigating membrane bulging, displacing or redistributing local liquid ...
Siqi Guo, Hongyu Sun, Le Shu, Xuejin Ge, Raquel Aymerich‐Armengol, Siyuan Zhang, Long Ren, Ningyan Cheng, Christina Scheu, Binghui Ge   +9 more
wiley   +1 more source

Variable Stiffness Fibers Enabled Universal and Programmable Re-Foldability Strategy for Modular Soft Robotics. [PDF]

Adv Sci (Weinh)
Luan H, Wang M, Zhang Q, You Z, Jiao Z.
europepmc   +1 more source

The Influence of Variable Stiffness of the Shape Memory Alloys Carbon Composite Structure on Mechanical Vibration. [PDF]

Materials (Basel)
Markuszewski D, Wądołowski M, Krajewski A.   +2 more
europepmc   +1 more source

Limit cycles and stiffness control with variable stiffness actuators

2012 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2012
Variable stiffness actuators realize highly dynamic systems, whose inherent mechanical compliance can be properly exploited to obtain a robust and energy-efficient behavior. The paper presents a control strategy for variable stiffness actuators with the primarily goal of tracking a limit cycle trajectory and a desired stiffness, which is a function of ...
R. Carloni, MARCONI, LORENZO
openaire   +4 more sources

Backstepping Control of Variable Stiffness Robots

IEEE Transactions on Control Systems Technology, 2015
Robots with elastic joints arouse an increasing interest in the robotics community. Especially, variable stiffness robots promise to be beneficial regarding robustness and task adaptability. However, the control of variable stiffness multijoint robots is challenging due to their highly nonlinear behavior.
Petit, Florian, Daasch, Andreas, Albu-Schäffer, Alin Olimpiu   +2 more
openaire   +3 more sources

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A position and stiffness control strategy for variable stiffness actuators

2012 IEEE International Conference on Robotics and Automation, 2012
Variable stiffness actuators (VSAs) have been introduced to improve, at the design level, the safety and the energy efficiency of the new generation of robots that have to interact closely with humans. A wide variety of design solutions have recently been proposed, and a common factor in most of the VSAs is the introduction of a flexible transmission ...
Irene Sardellitti, Gustavo A. Medrano-Cerda, Nikolaos G. Tsagarakis, Amir Jafari, Darwin G. Caldwell   +4 more
openaire   +2 more sources

Towards a robust variable stiffness actuator

2013 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2013
Robots with Variable Stiffness Actuators (VSA) are intrinsically flexible in the joints. The built-in mechanical spring not only has the advantage of a higher peak performance, but also leads to a more robust robot. This paper presents and analyzes the threats to a VSA equipped robot that arise from external or internal origin. Influences of mechanical,
Wolf, Sebastian, Albu-Schäffer, Alin Olimpiu   +1 more
openaire   +2 more sources