Results 121 to 130 of about 127,683 (368)

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 more
wiley   +1 more source

Leading-edge vortices in insect flight

, 2010
INSECTS cannot fly, according to the conventional laws of aerodynamics: during flapping flight, their wings produce more lift than during steady motion at the same velocities and angles of attack1?5.
Charles P. Ellington (17226214), Coen Van Den Berg (17226217), Sandy Willmott (17170156), Adrian L. R. Thomas (17226289)   +3 more
core   +1 more source

Effect of the laminar separation bubble induced transition on the hydrodynamic performance of a hydrofoil [PDF]

, 2014
The authors thank the technical staff of IRENav for their contribution to the experimental set up.The present study deals with the effect of the laminar separation bubble (LSB) induced transition on the lift, drag and moment coefficients of a hydrofoil ...
DELAFIN, Pierre Luc, DENISET, François, DELAFIN, Pierre-Luc, Astolfi, Jacques-André, ASTOLFI, Jacques Andre   +4 more
core   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source

Low speed aerodynamic characteristics of 60 degrees rounded leading-edge delta wing with vortex flaps

, 2022
Low speed wind tunnel measurements have been made on a 1.15m span 60º delta wing with rounded leading-edge vortex flaps. the purpose of the measurements was to assess the benefits of the measurements was to assess the benefits of the rounded leading-edge
Rinoie, K.
core   +1 more source

Study on the Suppression of Tip Leakage Vortex in Axial Flow Pumps Based on Circumferential Grooving in the Rotor Chamber

Journal of Marine Science and Engineering
The stability of axial flow pumps is significantly affected by the tip leakage vortex (TLV), which is generated through the entrainment of the main flow.
Haoran Wu, Desheng Zhang, Xi Shen, Chen Ni, Gang Yang   +4 more
doaj   +1 more source

Numerical Analysis of Leading-Edge Vortex Effect on Tidal Current Energy Extraction Performance for Chord-Wise Deformable Oscillating Hydrofoil

Journal of Marine Science and Engineering, 2019
To improve the energy extraction performance of the oscillating hydrofoil, the lift force that acts on the oscillating hydrofoil is analyzed. The pressure difference between the oscillating hydrofoil‘s opposing surfaces is dominant to generate the ...
Jianan Xu, Haiyang Zhu, Daitao Guan, and Yong Zhan   +3 more
doaj   +1 more source

Supersonic flow over low aspect-ratio wings [PDF]

, 1976
An attempt has been made, by means of exp": rimental work, to consolidate and augment existing knowledge of high-speed flows over delta wings. Particular emphasis .
Richards, I. C.
core  

Leading-edge vortex shedding from rotating wings

, 2014
International audienceThe paper presents a numerical investigation of the leading-edge vortices generated by rotating triangular wings at Reynolds number Re=250.
Kolomenskiy, Dmitry, Schneider, Kai, Elimelech, Yossef   +2 more
core   +1 more source

Wind tunnel tests for vortex generators mitigating leading-edge roughness on a 30% thick airfoil [PDF]

, 2020
Ruben Gutierrez, Elena Garay Llorente, Fernando Echeverría, Daniele Ragni   +3 more
openalex   +1 more source