Optimum design of lightweight silicon carbide mirror assembly

Han, Yuanyuan; Han, Jiecai; Zhang, Jian‐Han; Zhou, Yanjun

doi:10.1007/s11595-006-2259-3

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Vortex configurations have the potential to provide significant enhancement of data storage for computer hard drives or magnetic random access memories (MRAMs) [11][12][13]. How- ever, the usefulness of the vortex is determined by the ability to control of its magnetization chirality [14].…”

Section: Resultsmentioning

confidence: 99%

Rapid fabrication of nanoneedle arrays by ion sputtering

et al. 2007

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We report a novel method for rapidly fabricating ordered nanoneedles using an ion beam that cuts through the Fe/GaAs single thin layer or the Fe/MgO/Fe/GaAs multilayer producing a pillar pattern followed by raster-scanning normal to the patterned area. However, such ordered nanoneedles were not formed on the pure GaAs substrate surface without the thin Fe film coating, nor were nanoneedles formed on the GaAs substrate coated with a thin Cr epitaxial film, when this method was used. It has advantages over other methods, being simple, fast and well controlled for fabricating one-dimensional nanostructure arrays, leading to a range of applications such as high aspect ratio sharp tips for atomic force microscope/atom probes and consequent possible quantum confinement effects or arrays of nanostructures for field-optical/photoluminescence emission and data recording.

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Section: Resultsmentioning

confidence: 99%

Rapid fabrication of nanoneedle arrays by ion sputtering

et al. 2007

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“…Since direct diffusion bonding of TiAl-based alloys to steels is usually unable to get good joints, the use of an interlayer can be adopted. Success in the diffusion bonding between TiAl-based alloys and steels using metal interlayers have been reported [38,39]. As already referred, the use of interlayers could also enhance the solid-state diffusion bonding process of γ-TiAl alloys to themselves.…”

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confidence: 91%

Joining of Gamma-Based Titanium Aluminides – A Review

Ramos

Vieira

et al. 2006

MSF

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The optimisation of joining technologies is essential to the application of advanced materials in the design of parts and devices. The development of intermetallic compounds, as structural materials, inevitably requires a new approach to join these compounds to themselves or to other materials. Among different intermetallic classes, titanium aluminides are one of the most studied. However, the industrial application is far from being proportional to the research, due to different problems, where joining processes have an important role. The present paper highlights the state of art on joining γ-TiAl alloys. A review is presented with special emphasis on solid-state diffusion bonding process, because it seems to be the most suitable technique to produce high quality joints of advanced materials. The influence of the bonding conditions on the physical and mechanical properties of the joints is highlighted and the introduction of single or multiple interlayers to assist in the bonding process is discussed. A novel approach developed by the authors to the solid-state diffusion bonding of γ-TiAl alloys using Ti/Al multilayer thin films as bonding materials is proposed. The improvement of the solid-state diffusion bonding will induce sound joints at lower temperatures or pressures.

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“…Therefore, because of the difficulty in supporting and handling, this large mirror must be light-weighted. The light-weighted mirror have been design and fabricated with various core-cells [1][2][3][4][5][6][7][8][9]. The popular designs were categorized as contoured back, open back pocket milled, sandwich, and actuated.…”

Section: Introductionmentioning

confidence: 99%

An Investigation to Compare the Numerical Model Between Shell and Solid for Honeycomb Light-Weighted Mirror

Lin

Lee

Chang

et al. 2010

AMM

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Abstract. This article reports an accurate analysis approach of finite element modeling and optical modeling. It has been used for design and analysis of many opto-mechanical systems such as large telescopes and laser systems. The approach is to represent mirror surface deformation derived from finite element analysis (FEA) by Zernike polynomials, such that the impact of deformation on optical system performance can be evaluated by optical design and analysis program. The methodology of shell-based and solid-based finite element modeling and the comparison of their results have been described in this paper. The result shows that the deformation of the light-weighted mirror designed by this approach fulfills the requirements of optical design. The simulation results of shell based FE model are in good agreement with those of solid based FE model.

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Optimum design of lightweight silicon carbide mirror assembly

Cited by 5 publications

References 6 publications

Rapid fabrication of nanoneedle arrays by ion sputtering

Rapid fabrication of nanoneedle arrays by ion sputtering

Joining of Gamma-Based Titanium Aluminides – A Review

An Investigation to Compare the Numerical Model Between Shell and Solid for Honeycomb Light-Weighted Mirror

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