Results 91 to 100 of about 3,835 (288)

Flow structures of gaseous jets injected into water for underwater propulsion [PDF]

, 2011
Gaseous jets injected into water are typically found in underwater propulsion, and the flow is essentially unsteady and turbulent. Additionally, the high water-to-gas density ratio can result in complicated flow structures; hence measuring the flow ...
Ning-Fei Wang, Wang, Ning Fei, Shyy, Wei, Wei Shyy, Tang, Jia Ning, Jia-Ning Tang   +5 more
core   +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

Instant Evaporation ---the future of underwater propulsion

, 2020
This writing is a qualitative discussion on the potential of having super fast watercraft propelled by super powerful underwater engine.
openaire   +1 more source

Microfibers as Catalysts for Micro Unmanned Underwater Vehicle Propulsion [PDF]

, 2016
Micro unmanned underwater vehicles (UUVs) need to house propulsion mechanisms that are small in size but sufficiently powerful to deliver on-demand acceleration for tight radius turns, burst-driven docking maneuvers, and low-speed course corrections ...
Burns, Wyatt, Granit Vokshi, Jonathan C. Claussen, Garland, Nathaniel T., Mootz, Eric, Allison Cargill, Michael A. Daniele, Eric Mootz, Wyatt Burns, Davis, Jacob, Vokshi, Granit, Marius Pruessner, Geder, Jason, Chen, Bolin, Daniele, Michael A., Pruessner, Marius, Claussen, Jonathan C., Igor L. Medintz, Josh Kogot, Claussen, Jonathan, Kogot, Josh, Bolin Chen, Cargill, Allison, Jacob Davis, Garland, Nathaniel, Anne Leners, Leners, Anne, Medintz, Igor, Nathaniel T. Garland, Medintz, Igor L., Daniele, Michael, Jason Geder   +31 more
core   +2 more sources

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

A robust propulsion layout for underwater vehicles with enhanced manoeuvrability and reliability features [PDF]

, 2017
Design of autonomous underwater vehicles is deeply influenced by required mission specifications. In particular, some activities like inspection of offshore plants or harsh marine environments require underwater vehicle with high autonomy, good ...
Luca Pugi, Benedetto Allotta, Marco Pagliai   +2 more
core   +1 more source

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

Adaptive robust control for bimodal HAUV in aerial and underwater environments

Applied Ocean Research
Recently, hybrid aerial underwater vehicles (HAUVs) have attracted increasing attention owing to their ability to operate in both underwater and aerial environments.
Feng Zhang, Yucheng Zhao, Bo Jin, Junyu Zhang   +3 more
doaj   +1 more source

A versatile jellyfish-like robotic platform for effective underwater propulsion and manipulation. [PDF]

Sci Adv, 2023
Wang T, Joo HJ, Song S, Hu W, Keplinger C, Sitti M.   +5 more
europepmc   +1 more source

A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine

Advanced Robotics Research, EarlyView.
This work introduces a bio‐mimetic soft robotic fish driven by fiber‐reinforced dielectric elastomer actuators integrated as its body. By prestretching this active skin against a flexible spine, a negative stiffness system is created, enabling large‐amplitude bending.
Markus Koenigsdorff, Simon Holzer, Stefania Konstantinidi, Yoan Civet, Yves Perriard   +4 more
wiley   +1 more source