Results 51 to 60 of about 123,541 (313)

Large strain actuation in polypyrrole actuators [PDF]

SPIE Proceedings, 2004
A typical limitation of polypyrrole based conducting polymer actuators is the low achievable active linear strains (2 % recoverable at 10 MPa, 7 % max) that these active materials exhibit when activated in a common propylene carbonate / tetraethylammonium hexafluorophosphate electrolyte.
Vandesteeg, Nathan A., Rinderknecht, Derek, Anquetil, Patrick A., Hunter, Ian W., Madden, John D. W.   +4 more
openaire   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Artificial Landmarks for Trusted Localization of Autonomous Vehicles Based on Magnetic Sensors

Sensors, 2019
Magnetic sensors provide an advantageous alternative localization method, primarily focusing on localization in surroundings where GPS, other radio frequency-based, as well as optical localization do not work or has severe limitations.
Tobias Mitterer, Harald Gietler, Lisa-Marie Faller, Hubert Zangl   +3 more
doaj   +1 more source

Motion of a Legged Bidirectional Miniature Piezoelectric Robot Based on Traveling Wave Generation

Micromachines, 2020
This article reports on the locomotion performance of a miniature robot that features 3D-printed rigid legs driven by linear traveling waves (TWs). The robot structure was a millimeter-sized rectangular glass plate with two piezoelectric patches attached,
Jorge Hernando-García, Jose Luis García-Caraballo, Víctor Ruiz-Díez, Jose Luis Sánchez-Rojas   +3 more
doaj   +1 more source

Investigations into packaging technology for membrane-based thermal flow sensors [PDF]

Journal of Sensors and Sensor Systems, 2015
A new packaging method to mount a membrane-based thermal flow sensor, flush with the surface, is presented. Therefore, a specific design for the housing is shown, which is also adaptable to other conditions.
G. Dumstorff, E. Brauns, W. Lang
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Engineered Porous Metal Structures via Electroplating in Two-Photon Polymerized Molds

Proceedings
We report the realization of metallic 3D microstructures, electroplated in two-photon polymerized molds. These molds are typically 150 × 150 × 30 µm3 in size and the smallest feature size is about 1 µm.
Ana Luiza Silveira Fiates, Sina Reede, Franziska Bollhorst, Lukas Hansen, Klaus Froehner, Michael J. Vellekoop   +5 more
doaj   +1 more source

Loss Determination Techniques for Piezoelectrics: A Review

Actuators, 2023
Nowadays, heat dissipation in electronic devices is one of the serious issues to be resolved in energy and environmental terms. Piezoelectric materials are being utilized in many electronic devices, yet the roadblock toward further miniaturization of ...
Yoonsang Park, Minkyu Choi, Kenji Uchino
doaj   +1 more source

Untethered magneto-thermal flexible actuators for soft robotics

, 2023
Soft robots are devices that can perform delicate and sensitive movements. Such robots have flexible actuators activated by external triggers. Magnetic soft actuators, triggered by external magnetic fields, can be operated remotely and wirelessly.
Ge, Qi, Lieberman, Rama, Varma, Vijaykumar B., Magdassi, Shlomo, Yuan, Chao, Sharma, Vinay, Pahima, Avishag, Keneth, Ela Sachyani, Ramanujan, Raju V.   +8 more
core   +1 more source

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source