Air spread through a wetted deformable membrane: Implications for the mechanism of soft valves in plants

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Jooyoung Park ◽  
Jeongeun Ryu ◽  
Sung Ho Park ◽  
Sang Joon Lee
Keyword(s):  
Deformable Membrane

Phase control of a path-entangled photon state by a deformable membrane mirror

2011 ◽  
Author(s):  
Cristian Bonato ◽  
Stefano Bonora ◽  
Andrea Chiuri ◽  
Paolo Mataloni ◽  
Giorgio Milani ◽  
...  
Keyword(s):  
Phase Control ◽  
Photon State ◽  
Deformable Membrane ◽  
Deformable Membrane Mirror

Particle swarm optimization on a new parametric model of a deformable membrane lens

2011 ◽  
Author(s):  
Dirk Strohmeier ◽  
Jan Draheim ◽  
Matthieu Domaszewski ◽  
Andreas Greiner ◽  
Ulrike Wallrabe ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Particle Swarm ◽  
Parametric Model ◽  
Swarm Optimization ◽  
Deformable Membrane

scholarly journals Dynamic closed-loop system for focus tracking using a spatial light modulator and a deformable membrane mirror

2006 ◽  
Vol 14 (1) ◽  
pp. 222 ◽  
Author(s):  
Amanda J. Wright ◽  
Brett A. Patterson ◽  
Simon P. Poland ◽  
John M. Girkin ◽  
Graham M. Gibson ◽  
...  
Keyword(s):  
Spatial Light Modulator ◽  
Closed Loop ◽  
Loop System ◽  
Closed Loop System ◽  
Light Modulator ◽  
Deformable Membrane ◽  
Deformable Membrane Mirror

Aerodynamic Characteristics of a Deformable Membrane Aerofoil

2014 ◽  
Vol 553 ◽  
pp. 255-260
Author(s):  
Viktor Šajn ◽  
Igor Petrović ◽  
Franc Kosel
Keyword(s):  
Experimental Study ◽  
Reynolds Number ◽  
Wind Tunnel ◽  
Lift Coefficient ◽  
Fluid Structure Interaction ◽  
Angle Of Attack ◽  
Aerodynamic Characteristics ◽  
Relative Difference ◽  
Structure Interaction ◽  
Deformable Membrane

In the paper, numerical and experimental study of low Reynolds number airflow around the deformable membrane airfoil (DMA) is presented. Simulations of a fluid-structure interaction between the fluid and the DMA were performed. In the experiment, the DMA model was made from a thin PVC sheet, which was wrapped around the steel rod at the leading and trailing edge. Measurements were performed in a wind tunnel at a chord Reynolds number of 85.7·103, over the angle of attack range from 0° to 15° and DMA shortening ratio from 0.025 to 0.150. Simulations were in an agreement with the experiment, since the average relative difference of coefficient of lift was smaller than 7.3%. For the same value of Reynolds number, DMA shows improved lift coefficient Cy= 2.18, compared to standard rigid airfoils.

Chaotic Genetic Algorithm for Wavefront Correction in Adaptive Optics

2014 ◽  
Vol 666 ◽  
pp. 293-297
Author(s):  
Stephen Kotiang ◽  
Jae Ho Choi
Keyword(s):  
Genetic Algorithm ◽  
Adaptive Optics ◽  
Logistic Function ◽  
Wavefront Correction ◽  
Chaos Search ◽  
Deformable Membrane ◽  
Deformable Membrane Mirror ◽  
Encoding Method ◽  
Wave Aberration ◽  
Standard Genetic Algorithm

Chaotic genetic algorithm (CGA) is presented as an optimization algorithm for sensorless adaptive optics system to compensate atmospheric wave aberration. Chaos search strategy is incorporated into standard genetic algorithm by the logistic function that possess convergent, bifurcating, and chaotic characteristics during evolution to control the convergence of genetic algorithm. A real number encoding method is adopted in the search process and CGA is used to control a 61-actuator deformable membrane mirror (DM).The algorithm uses light intensity detected on the focal plane as the objective function to optimize, and the simulation results show CGAperforms faster than GA and thus can effectively be used in AO systems.

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