Results 71 to 80 of about 1,160,382 (294)

Azobenzene's Cross‐Scale Optics and Photonics: Molecular Photoswitching, Mesoscopic Material Motions, and Adaptive Devices

Advanced Materials, EarlyView.
Azobenzene photoswitches translate molecular‐scale E/Z photoisomerization into macroscopic material responses and device‐level photonic functions. This Review highlights how azobenzene research has evolved from molecular photochemistry to photoalignment, mass migration, photomechanics, and heat release, ultimately enabling holography, reconfigurable ...
Heeju Son, Soyul Kwak, Heerin Noh, Minsang Kim, Doyeon Noh, Subhayan Chakraborty, Jaewon Lee, YongDeok Cho, Kyeongsoo Kim, Taewoong Eom, Moonyoung Kim, Jangwon Kim, Hoyoung Lee, Soyoung Lee, Jaehun Kim, Grace G. D. Han, Shin‐Tson Wu, Stefano Oscurato, Arri Priimagi, Marina Saphiannikova, Seungwoo Lee   +20 more
wiley   +1 more source

Dynamic stall characteristics of a rotor airfoil under coupled pitching-plunging motions

Kongqi donglixue xuebao
The blade of a helicopter rotor encounters plunging motion in addition to periodic pitching oscillations during actual flight, which complicates the flow field structure and dynamic stall characteristics.
Jiaqiang WU, Lang LI, Guoqiang LI, Juncheng SHEN, Jieru YU, Ruifeng CHEN   +5 more
doaj   +1 more source

Investigation of Heaving-pitching Airfoil in Ground Proximity using Large Eddy Simulations [PDF]

Journal of Applied Fluid Mechanics
This study examines the aerodynamics of a wing-in-ground (WIG) airfoil subjected to heaving (plunging) & pitching motion, specifically examining the distinctions in flow between transitional and turbulent states, which are essential for assessing its ...
Y. E. William, S. Kanagalingam, M. H. Mohamed   +2 more
doaj   +1 more source

Improvement of Pitch Motion Control of an Aircraft Systems [PDF]

TELKOMNIKA (Telecommunication Computing Electronics and Control), 2018
تعد حركة ملعب الطائرة مهمة جدًا لضمان سلامة الركاب والأطقم في جوهرها وتحقيق الطائرة لأقصى قدر من الاستقرار. الهدف من هذه الدراسة هو توفير حل لنظام التحكم الذي يتميز بشكل خاص بحركة زاوية الملعب لنظام الطائرة من أجل الحصول على صعود مريح. تم تطوير ثلاث وحدات تحكم في هذه المشاريع والتي كانت مشتقة متكاملة متناسبة (PID)، ووحدة تحكم منطقية ضبابية (FLC ...
Aishah Johari, Fitri Yakub, Hatta Ariff, Zainudin A. Rasid, Shamsul Sarip, Rudzidatulm Akmam Dziyauddin, Mohd Zamzuri Ab Rashid, Azızul Azizan, Yuichi Mori   +8 more
openaire   +1 more source

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Predicting elbow valgus torque from upper extremity baseball pitching kinematics using markerless motion capture

Sports Medicine and Health Science
Background: Markerless motion capture in sport is becoming widely available and increasingly popular. Because of the increase in popularity, it is important to determine if the values reported by these systems are similar to that of previous research ...
Adam R. Nebel, Abigail C. Schmitt
doaj   +1 more source

1‐D Collocated Dual‐Gradient Sensory Fibers for Comprehensive Sensing and Decoding of Complex Human Motion and Physiology

Advanced Materials, EarlyView.
Coupled materials design enables a monolithic fiber that integrates complementary sensing regimes into a single wearable strand. By preserving informative signal features across subtle physiological deformation, large body motion, and mixed mechanical inputs, the dual‐gradient architecture generates synchronized, less redundant outputs that improve ...
Yunheum Lee, Sungha Jeon, Min Kim, Joonhee Won, Jinwook Yeo, Kyunghyun Jo, Soyeon Lee, Kieun Park, Yechan Yang, Chul Kim, Gun‐Hee Lee, Seunghwa Ryu, Sungho Jo, Seongjun Park   +13 more
wiley   +1 more source

Measuring the Average Peak Timing of Kinematic Variables in Youth and Adolescent Baseball Pitchers

International Journal of Sports Physical Therapy, 2023
# Background Previous studies have examined the timing of peak kinematic variables during the pitching cycle in high school, collegiate, and professional pitchers. These same variables have been studied less in younger populations.
Mark Boland, Daniel Zambanini, Ivan Mulligan, Sean Donegan   +3 more
doaj   +1 more source

Global vorticity shedding for a vanishing wing [PDF]

, 2011
If a moving body were made to vanish within a fluid, its boundary-layer vorticity would be released into the fluid at all locations simultaneously, a phenomenon we call global vorticity shedding.
Triantafyllou, M.S., Steele, S.C., Weymouth, G.D., Triantafyllou, Michael S., Wibawa, M.S., Rival, D.E., Weymouth, Gabriel D., Dahl, Jason, Steele, Stephanie C., Rival, D. E., Wibawa, M. S., Dahl, J.M.   +11 more
core   +1 more source

Bioinspired Adaptive Surfaces for Intelligent Liquid Manipulation: Progressing From Passive and Active to Hybrid Strategies

Advanced Materials, EarlyView.
This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao, Yiyuan Zhang, Liqiu Wang, Alan C. H. Tsang   +3 more
wiley   +1 more source