Results 31 to 40 of about 711,732 (383)
Influence functions for a hysteretic deformable mirror with a high-density 2D array of actuators. [PDF]
Applied Optics, 2020 We present modeling and analysis of a hysteretic deformable mirror where the facesheet interacts with a continuous layer of piezoelectric material that can be actuated distributively by a matrix of electrodes through multiplexing.
A. Schmerbauch +4 more
semanticscholar +1 more source
Characterization of a bimorph deformable mirror using stroboscopic phase-shifting interferometry [PDF]
Sens Actuators A Phys, 2006 David A. Horsley +3 more
openalex +2 more sources
General approach to precise deformable mirror control.
Optics Express, 2021 We develop a simple and effective control method for accurate control of deformable mirrors (DMs). For a desired DM surface profile and using batches of observed surface profile data, the proposed method adaptively determines both a DM model (influence ...
A. Haber, T. Bifano
semanticscholar +1 more source
Ultralightweight deformable mirrors [PDF]
Applied Optics, 2013 This paper presents a concept for ultralightweight deformable mirrors, based on a thin substrate of optical surface quality, coated with continuous active layers that provide separate modes of actuation at different length scales. This concept eliminates any kind of stiff backing structure for the mirror surface and exploits microfabrication ...
Patterson, Keith, Pellegrino, Sergio
openaire +5 more sources
Nanolaminate Deformable Mirrors [PDF]
IEEE/LEOS International Conference on Optical MEMS and Their Applications Conference, 2006., 2006 The paper describes two similar deformable mirrors that will demonstrate the feasibility of nanolaminate-based deformable mirrors over a wide range of size scales. Two complementary technologies: high-spatial-density electrostatic actuators and thin, flexible, lightweight nanolaminate foils are combined.
Papavasiliou, A. P. +6 more
openaire +2 more sources
Architected Lattices with a Topological Transition
Advanced Engineering Materials, EarlyView., 2023 This article develops topological metamaterials showing multidirectional two‐step deformation under compression by embedding contact‐enabled topological mechanisms into lattice structures. Experiments on 3D‐printed 2D and 3D lattices and finite element simulations are conducted to demonstrate the working principle of the topological metamaterials.
Shivam Agarwal, Lihua Jin
wiley +1 more source
Advanced Engineering Materials, EarlyView., 2023 A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal +3 more
wiley +1 more source
Photonics, 2023 Atmospheric turbulence causes refractive index fluctuations, which in turn introduce extra distortions to the wavefront of the propagated radiation. It ultimately degrades telescope resolution (in imaging applications) and reduces radiation power density
Ilya Galaktionov +4 more
doaj +1 more source
The quantum deformed mirror TBA II [PDF]
Journal of High Energy Physics, 2012 v2, 51 pages, 5 figures, as ...
Gleb Arutyunov +3 more
openaire +12 more sources
Distributed actuator deformable mirror [PDF]
SPIE Proceedings, 2011 In this paper we present a Deformable Mirror (DM) based on the continuous voltage distribution over a resistive layer. This DM can correct the low order aberrations (defocus, astigmatism, coma and spherical aberration) using three electrodes with nine contacts leading to an ideal device for sensorless applications. We present a mathematical description
J. Lafranceschina +2 more
openaire +4 more sources