Results 111 to 120 of about 36,758 (316)

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Marine propellers and propulsion / [PDF]

, 2007
Although the propeller lies submerged out of sight, it is a complex component in both the hydrodynamic and structural sense. Marine Propellers and Propulsion fulfils the need for a comprehensive and cutting edge volume that brings together a great range ...
Carlton, J. S.(John S.)
core  

Pulsed Chemical Rocket with Green High Performance Propellants [PDF]

, 2013
PulCheR (Pulsed Chemical Rocket with Green High Performance Propellants) is a new propulsion concept in which the propellants are fed in the combustion chamber at low pressure and the thrust is generated by means of high frequency pulses, reproducing the
Lucio Torre, Angelo Pasini, D'AGOSTINO, LUCA, VALENTINI, DARIO, Lucio, Torre, Dario Valentini, Giovanni Pace, PASINI, ANGELO, Luca d'Agostino, PACE, GIOVANNI   +9 more
core   +1 more source

Mechanism of Speed Loss Reduction and Propulsion Efficiency Improvement of ONR Tumblehome with Active-Controlled Stern Flaps in Resonance Waves

Journal of Marine Science and Engineering
The stern flap is a practical hull appendage equipment that enhances ship navigation performance and saves energy. The existing studies mainly focus on the fixed stern flap, other than an actively controlled one, so it is worth further exploring its ...
Lei Zhang, Chuanshun Du, Yongsen Ni, Yuchen Shang, Jianing Zhang   +4 more
doaj   +1 more source

Discussion of the Fluid Acceleration Quality of a Ducted Propulsion System on the Propulsive Performance [PDF]

Computer Modeling in Engineering & Sciences, 2022
Jui-Hsiang Kao, Yi-Fan Liao
openaire   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

A RANS Modelling Approach for Predicting Powering Performance of Ships in Waves [PDF]

, 2013
In this paper, a modelling technique for simulating selfpropelled ships in waves is presented. The flow is modelledusing a RANS solver coupled with an actuator diskmodel for the propeller.
Hudson, Dominic, Winden, Bjorn, Turnock, Stephen, Björn Windén, Stephen Turnock, Dominic Hudson, Hudson, Dominic A., Turnock, S.R.   +7 more
core   +1 more source

The Design, Modeling, and Experiment of a Novel Diving-Beetle-Inspired Paddling Propulsion Robot

Biomimetics
Bionic paddling robots, as a novel type of underwater robot, demonstrate significant potential in the fields of underwater exploration and development.
Jiang Ding, Jingyu Li, Tianbo Lan, Kai He, Qiyang Zuo   +4 more
doaj   +1 more source

Phase Evolution Kinetics in Additive‐Free 19.75% Organic Photovoltaics Empowered by Solvent Vapor Annealing

Advanced Functional Materials, EarlyView.
Solvent vapor annealing enables kinetic control of additive‐free morphology in organic solar cells. Selective plasticization of acceptor forms an optimal fibrillar network, boosting efficiency to 19.06% (binary) and 19.75% (ternary), with ultrafast exciton dissociation and reduced recombination.
Jie Lv, Jieni Chen, Cenqi Yan, Patrick W. K. Fong, Jingjing Zhao, Daming Zheng, DingQin Hu, Xiaoman Ding, Xiaokang Sun, Chuanlin Gao, Guangye Zhang, Qianguang Yang, Can Zhu, Pei Cheng, Shirong Lu, Zhipeng Kan, Zhiwei Ren, Guangliu Ran, Wenkai Zhang, Hanlin Hu, Gang Li   +20 more
wiley   +1 more source

Integration of CFD tools in aerodynamic design of contra-rotating propellers blades [PDF]

, 2011
A strategy for Contra-Rotating Open Rotors blades design is presented. It is based on several analytical or CFD tools with increasing levels of accuracy. A preliminary design is made with a lifting-line code. These first geometries are then validated and
Béchet, Sylvain, Negulescu, Camil A., Chapin, Vincent, Simon, Frank   +3 more
core