Results 91 to 100 of about 713,051 (384)

Bioinspired Design of Isotropic Lattices with Tunable and Controllable Anisotropy

Advanced Engineering Materials, EarlyView.
This study introduces nested isotropic lattices, integrating architectural elements like nesting orders and orientations inspired by bioarchitectures. The design enables tunable anisotropy across nine mono‐nest and twenty multi‐nest lattices with 252 parametric variations, demonstrating transitions from shear‐ to tensile‐compression‐dominant behaviors ...
Ramalingaiah Boda, Biranchi Panda, Shanmugam Kumar   +2 more
wiley   +1 more source

Active transverse mode control and optimisation of an all-solid-state laser using an intracavity adaptive-optic mirror [PDF]

, 2002
A 37 element adaptive optic mirror has been used intracavity to control the oscillation mode profile of a diode-laser pumped Nd:YVO4 laser. Mode and power optimisation are demonstrated by closed loop automatic optimisation of the deformable ...
Bente, E.A.J.M., Burns, D., Girkin, J.M., Lubeigt, W., Valentine, G.J.   +4 more
core   +3 more sources

Active optics in astronomy – modeling of deformable substrates: freeform surfaces for FIREBall and MESSIER

Journal of the Mechanical Behavior of Materials, 2018
Active optics techniques on large telescopes and astronomical instrumentations provide high imaging quality. For ground-based astronomy, the co-addition of adaptive optics again increases angular resolution up to providing diffraction-limited imaging at ...
Lemaitre Gérard Rene
doaj   +1 more source

Robust control of a bimorph mirror for adaptive optics system [PDF]

, 2008
We apply robust control technics to an adaptive optics system including a dynamic model of the deformable mirror. The dynamic model of the mirror is a modification of the usual plate equation. We propose also a state-space approach to model the turbulent
Arzelier, Denis, Baudouin, Lucie, Guignard, Fabien, Prieur, Christophe   +3 more
core   +2 more sources

Influence of Specific Ball‐Milling Energy on Mechanical and Corrosion Properties of Zn–0.2 Graphene Nanoplatelet Composites

Advanced Engineering Materials, EarlyView.
In this study, the effect of specific ball‐milling energy (SBME) on the mechanical and corrosion properties of graphene nanoplatelets (GNPs) Zn matrix composites is presented. GNPs are uniformly dispersed in the Zn powder mixtures at the optimal SBME of 32.82 kJ g−1.
Humayun Kabir, Khurram Munir, Cuie Wen, Yuncang Li   +3 more
wiley   +1 more source

ZOLA-3D allows flexible 3D localization microscopy over an adjustable axial range

Nature Communications, 2018
3D single-molecule localization is limited in depth and often requires using a wide range of point spread functions (PSFs). Here the authors present an optical solution featuring a deformable mirror to generate different PSFs and easy-to-use software for
Andrey Aristov, Benoit Lelandais, Elena Rensen, Christophe Zimmer   +3 more
doaj   +1 more source

Beam Shaping by a Magnetic Fluid Deformable Mirror With Curved Trajectory for Optical Tweezer System

IEEE Access, 2021
This article describes a novel optical tweezer system which utilizes a magnetic fluid deformable mirror (MFDM) with a wavefront sensor (WFS) and controller to produce a curved Bessel beam for manipulating an optically trapped microparticle.
Xiang Wei, Yongjun Yang, Dziki Mbemba, Feng Li, Zhizheng Wu, Suresh Sivanandam, Azhar Iqbal   +6 more
doaj   +1 more source

SAOLIM, a prototype of a low cost System for Adaptive Optics with Lucky Imaging

, 2010
A prototype of a low cost Adaptive Optics (AO) system has been developed at the Instituto de Astrofisica de Andalucia (CSIC) and tested at the 2.2m telescope of the Calar Alto observatory.
Aceituno, F. J., Aceituno, J., Ortiz, J. L., Sanchez, S. F.   +3 more
core   +1 more source

Elastic‐Wave Propagation in Chiral Metamaterials: A Couple‐Stress Theory Perspective

Advanced Engineering Materials, EarlyView.
The intrinsic chirality of chiral metamaterials renders an effective medium based on the classical continuum theory ineffective for predicting their acoustic activity. This limitation is addressed in the present study by employing augmented asymptotic homogenization to derive a couple‐stress‐based effective medium, enabling accurate predictions in the ...
Shahin Eskandari, Wanmin Xu, Slight Chen, Bilen Emek Abali, Valérie Orsat, Abdolhamid Akbarzadeh   +5 more
wiley   +1 more source

Simulative and Experimental Characterization of an Adaptive Astigmatic Membrane Mirror

Micromachines, 2021
Adaptive optical (AO) components play an important role in numerous optical applications, from astronomical telescopes to microscope imaging systems. For most of these AO components, the induced wavefront correction, respectively added optical power, is ...
Ulrich Kallmann, Michael Lootze, Ulrich Mescheder   +2 more
doaj   +1 more source