Results 81 to 90 of about 713,051 (384)

Development of a carbon fibre composite active mirror: Design and testing

open access: yes, 2005
Carbon fibre composite technology for lightweight mirrors is gaining increasing interest in the space- and ground-based astronomical communities for its low weight, ease of manufacturing, excellent thermal qualities and robustness.
Brooks, D.   +7 more
core   +1 more source

ADAPTIVE OPTICS WITH SEGMENTED MIRROR OR DEFORMABLE MIRROR

open access: yesLe Journal de Physique Colloques, 1980
Two kinds of adaptive optics (COAT) are presented : one with segmented mirrors (COAT = 19) with 19 mirrors and actuators and the other with a continuously deformable mirror and 7 actuators. Each mirror of COAT 19 is moved by a piezoelectric actuator performing correction and modulation (dithering in the 12-24 kHz band).
C. Davila   +3 more
openaire   +3 more sources

Extended depth-of-field microscopy with a high-speed deformable mirror.

open access: yesOptics Letters, 2017
We present a wide-field fluorescence microscopy add-on that provides a fast, light-efficient extended depth-of-field (EDOF) using a deformable mirror with an update rate of 20 kHz.
W. Shain   +4 more
semanticscholar   +1 more source

Determining the Necessity of Post‐Processing Heat Treatment for the 316L Stainless Steel Manufactured by Laser Powder Bed Fusion through Evaluation of Mechanical and Corrosion Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This article examines the effect of postprocessing heat treatment on 316L stainless steel (SS316L) produced via laser powder bed fusion (LPBF). Heat treatment slightly affects property anisotropy, reduces strength, and enhances elongation. However, it increases corrosion susceptibility due to nanoscale precipitations, though overall corrosion ...
Baibhav Karan   +5 more
wiley   +1 more source

An Image Stabilization Optical System Using Deformable Freeform Mirrors

open access: yesSensors, 2015
An image stabilization optical system using deformable freeform mirrors is proposed that enables the ray sets to couple dynamically in the object and image space.
Qun Hao   +3 more
doaj   +1 more source

More Toda-like (0,2) mirrors [PDF]

open access: yesJHEP 1708 (2017) 079, 2017
In this paper, we extend our previous work to construct (0,2) Toda-like mirrors to A/2-twisted theories on more general spaces, as part of a program of understanding (0,2) mirror symmetry. Specifically, we propose (0,2) mirrors to GLSMs on toric del Pezzo surfaces and Hirzebruch surfaces with deformations of the tangent bundle.
arxiv   +1 more source

Mechanical Metamaterials for Bioengineering: In Vitro, Wearable, and Implantable Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Mechanical metamaterials with engineered architectures exhibit properties that differ from and greatly surpass those of their constituent bulk materials. This review summarizes the applications of mechanical metamaterials in bioengineering, focusing on advances in the last 5 years.
Madihah Kazim   +2 more
wiley   +1 more source

Optimization of electrode geometry and piezoelectric layer thickness of a deformable mirror

open access: yesEPJ Web of Conferences, 2013
Deformable mirrors are the most commonly used wavefront correctors in adaptive optics systems. Nowadays, many applications of adaptive optics to astronomical telescopes, high power laser systems, and similar fast response optical devices require large ...
Nováková Kateřina   +2 more
doaj   +1 more source

Simulation and experimental investigation on the wavefront correction performance of a dual magnetic connection deformable mirror under high-power laser irradiation

open access: yesFrontiers in Physics, 2023
Deformable mirrors (DMs) are widely used in high-power laser systems to improve the output beam quality. However, under high-power laser irradiation, the heat accumulates on the DM mirror surface and results in high-power laser induced distortions (LID),
Yamin Zheng   +11 more
doaj   +1 more source

Axial range of conjugate adaptive optics in two-photon microscopy

open access: yes, 2015
We describe an adaptive optics technique for two-photon microscopy in which the deformable mirror used for aberration compensation is positioned in a plane conjugate to the plane of the aberration.
Bifano, Thomas   +3 more
core   +1 more source

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