Results 101 to 110 of about 21,441 (307)

Experimental validation of a CFD-based resistive force coefficient set for rotating helical tails in cylindrical channels [PDF]

, 2013
Real-time manipulation of objects in micro flows is important due to an ever increasing interest in demanding medical applications. Specialized swimming micro robots are expected to perform minimal invasive surgery consisting of various in vivo tasks.
Tabak, Ahmet Fatih, Yeşilyurt, Serhat, S. Yesilyurt, A. Fatih Tabak   +3 more
core   +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

Fluid–Structure Interaction Analysis of a Bionic Robotic Fish Based on a Macrofiber Composite Material

Biomimetics
In this study, the power system of a bionic robotic fish has been significantly simplified, resulting in a reduced volume and enhanced flexibility of both the structure and movement.
Chenghong Zhang
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

Future Air Force aircraft propulsion control systems: The extended summary paper [PDF]

, 1980
Hydromechanical control technology simply cannot compete against the performance benefits offered by electronics. Future military aircraft propulsion control systems will be full authority, digital electronic, microprocessor base systems.
Skira, C. A.
core   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source

Propulsion of polymer particles on caesium ion-exchanged channel waveguides for stem cell sorting applications [PDF]

, 2009
Optical trapping of particles has become a powerful non-mechanical and nondestructive technique for precise particle positioning. The manipulation of particles in the evanescent field of a channel waveguide potentially allows for sorting and trapping of ...
Mohamad Shahimin, Mukhzeer
core  

Time course of the ground reaction force during the propulsion phase of the single leg hop test (SLHT). [PDF]

, 2014
Fz(t) – normalized vertical ground reaction force; IPP – initial propulsion phase; EPP – end propulsion phase; TP – duration of the propulsion phase; PKFa – Peak Knee Flexion Angle; G – gravitational force acting on the human body (G = m.g, where m is ...
João Carlos Ferrari Correa (565055), Nayra Deise Dos Anjos Rabelo (565057), Paulo Roberto Garcia Lucareli (565059), Andre Serra Bley (565054), Amir Curcio Dos Reis (565056), Paulo Henrique Marchetti (565058)   +5 more
core   +1 more source

Reduced Graphene Oxide Transparent Electrodes Enabling Compact Soft Tunable Lenses

Advanced Functional Materials, EarlyView.
By spray‐coating an elastomeric membrane with reduced graphene oxide (rGO) at various surface densities, elastomeric actuators are manufactured. Electro‐mechano‐optical characterizations show the suitability of rGO as an effective material for compliant, semi‐transparent electrodes, enabling soft electrically tunable lenses with a compact form factor ...
Giacomo Sasso, Alec Lamoreux, Nicola Pugno, James J. C. Busfield, Federico Carpi   +4 more
wiley   +1 more source

Levitation‒guidance‒propulsion integrated design for maglev trains based on oblique ring Halbach permanent magnet wheels

机车电传动, 2023
In this paper, a levitation, guidance and propulsion integrated design was proposed for maglev trains on the principle of permanent magnet electrodynamic suspension, in which the Halbach ring permanent magnet wheels and conductor plates were tilted after
LIU Xin, DENG Zigang, LIANG Le, LI Kaiwen, LU Hao, ZHENG Jun   +5 more
doaj