Results 51 to 60 of about 67,287 (298)

Anisotropy of colloidal components propels field-activated stirrers and movers

Physical Review Research, 2020
Propulsion via cyclic moves presents a challenge to micro-objects in overdamped environments, where time reversibility may prevent directed motion. Most reported cyclic movers exploit anisotropic hydrodynamic drag with the surrounding medium to push or ...
Gabi Steinbach, Michael Schreiber, Dennis Nissen, Manfred Albrecht, Sibylle Gemming, Artur Erbe   +5 more
doaj   +1 more source

Magnetic Propulsion for a Hypervelocity Launcher [PDF]

, 1980
The concept of using electromagnetic forces to launch projectiles to high-velocity has been pursued since the laws of electro-motion were first derived by Oersted and Ampere in the early 1800’s. During the 1960’s, there were a number of attempts to develop practical hypervelocity accelerators using electro-magnetic forces.
John P. Barber, Richard A. Marshall, Scott Rashleigh   +2 more
openaire   +1 more source

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

Advanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson, Hemish B. Thakkar, Jiaen Wu, Emily C. Davidson   +3 more
wiley   +1 more source

The Operation of UAV Propulsion Motors in the Presence of High External Magnetic Fields

Robotics, 2021
The operation and maintenance of converter stations (also known as valve halls) in high voltage DC (HVDC) grids is a key element in long-term, reliable and stable operation, especially in inherently adverse offshore environments.
Mohammad Heggo, Anees Mohammed, Juan Melecio, Khristopher Kabbabe, Paul Tuohy, Simon Watson, Sinisa Durovic   +6 more
doaj   +1 more source

Active Colloidal Molecules

, 2018
Like ordinary molecules are composed of atoms, colloidal molecules consist of several species of colloidal particles tightly bound together. If one of these components is self-propelled or swimming, novel "active colloidal molecules" emerge.
Löwen, Hartmut
core   +1 more source

Fluid-Induced Propulsion of Rigid Particles in Wormlike Micellar Solutions [PDF]

, 2014
In the absence of inertia, a reciprocal swimmer achieves no net motion in a viscous Newtonian fluid. Here, we investigate the ability of a reciprocally actuated particle to translate through a complex fluid that possesses a network using tracking methods
Alexander M., Anderson V. J., Bird R. B., David A. Gagnon, Gray J., Gray J., Gray J., Nathan C. Keim, Paulo E. Arratia, Rothstein J. P., Xiaoning Shen   +10 more
core   +3 more sources

Magnetized target fusion and fusion propulsion [PDF]

AIP Conference Proceedings, 2002
Magnetized target fusion (MTF) is a thermonuclear fusion concept that is intermediate between the two mainline approaches, magnetic confinement and inertial confinement fusion (MCF and ICF). MTF incorporates some aspects of each and offers advantages over each of the mainline approaches.
openaire   +1 more source

Switchable Supramolecular Adhesive by Tuning Interfacial Bonding and Modulus

Advanced Functional Materials, EarlyView.
The supramolecular adhesive (HyDiP) shows reversible adhesion and recyclability. In the dehydrated state, it is dense, stiff (E ≈445 MPa), transparent, and provides strong bonding with adhesion strengths up to 4.65 MPa. In the hydrated state, it becomes porous, soft (E ≈0.11 MPa), and detaches easily, enabling sustainable high‐strength applications ...
Rumin Fu, Cairong Xiao, Zihao Du, Changhong Linghu, Yongdong Shi, Chuyang Xiang, Mingxin Wan, Guoxin Tan, Limin Lu, Chengyun Ning, K Jimmy Hsia   +10 more
wiley   +1 more source

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

Analysis of azimuthal electron current driving by rotating magnetic field in field-reversed configuration electric propulsion

AIP Advances
Field-reversed configuration electric propulsion is an advanced space electromagnetic propulsion technology with significant application prospects but poor thrust performance.
Qiangqiang Chen, Yanhui Jia, Xinfeng Sun, Fangwei Lv, Hai Geng, Bo Rao   +5 more
doaj   +1 more source