Thermal Properties of Double-Aluminized Kapton at Low Temperatures

Tuttle, James; DiPirro, Mike; Canavan, Edgar R.; Hait, T.

doi:10.1063/1.2900367

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…Oxidative degradation is more common in high temperature environments, so an alternative atmosphere is required to prevent a rapid reduction in film lifetime [ 39 ]. The probable structural components of the surface area of the substrate after the influence of ozone and temperature are shown in Figure 1 , then the process of decomposition of the precursors and the formation of Bi-O and Fe-O bonds take place [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

Multiferroic/Polymer Flexible Structures Obtained by Atomic Layer Deposition

et al. 2022

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The paper considers how a film of bismuth ferrite BiFeO3 (BFO) is formed on a polymeric flexible polyimide substrate at low temperature ALD (250 °C). Two samples of BFO/Polyimide with different thicknesses (42 nm, 77 nm) were studied. As the thickness increases, a crystalline BFO phase with magnetic and electrical properties inherent to a multiferroic is observed. An increase in the film thickness promotes clustering. The competition between the magnetic and electrical subsystems creates an anomalous behavior of the magnetization at a temperature of 200 K. This property is probably related to the multiferroic/polymer interface. This paper explores the prerequisites for the low-temperature growth of BFO films on organic materials as promising structural components for flexible and quantum electronics.

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Section: Resultsmentioning

confidence: 99%

Multiferroic/Polymer Flexible Structures Obtained by Atomic Layer Deposition

et al. 2022

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“…The quality and reliability of a system's model depend on the model's adequacy to describe the system and its real-life behavior. 11 Model parameter values are often known only under ideal conditions or in a few limited laboratory test cases, [12][13][14][15] which either do not necessarily apply to the specific system or mission being investigated or lie outside the domain of the intended application of the model. 2 In addition, test settings and boundary conditions, as well as the hardware configuration, lead engineers to introduce effective parameters to account for geometric complexity [e.g., in a multilayer insulation (MLI) blanket] and physical phenomena caused by hardware interactions (e.g., aluminum screws bolted into a titanium rod or the presence of test sensors, instrumentation, etc.…”

Section: Background and Motivationmentioning

confidence: 99%

Multifidelity uncertainty quantification and model validation of large-scale multidisciplinary systems

Cataldo

Qian

Auclair

2022

J. Astron. Telesc. Instrum. Syst.

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A simulation-based framework for multifidelity uncertainty quantification is presented, which informs and guides the design process of complex, large-scale, multidisciplinary systems throughout their life cycle. In this framework, uncertainty in system models is identified, characterized, and propagated in an integrated manner through the analysis cycles needed to quantify the effects of uncertainty on the quantities of interest. This is part of the process to design systems and verify their compliance to performance requirements. Uncertainty quantification is performed through mean and variance estimators as well as global sensitivity analyses. These computational analyses are made tractable by the use of multifidelity methods, which leverage a variety of low-fidelity models to obtain speed-ups, while keeping the main highfidelity model in the loop to guarantee convergence to the correct result. This framework was applied to the James Webb Space Telescope observatory integrated model used to calculate the wavefront error caused by thermal distortions. The framework proved to reduce the time required to perform global sensitivity analyses from more than 2 months to less than 2 days, while reducing the error in the final estimates of the quantities of interest, including model uncertainty factors. These technical performance improvements are crucial to the optimization of project resources such as schedule and budget and ultimately mission success.

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“…This configuration is robust against launch loads and has very small (<0.5 K) temperature gradients. A similar shield is used for the MIRI instrument on JWST and has been proven thermally 5 and structurally. The shield is offset from the surface of the barrel by 63 mm using thin-wall Vespel SP-1 tubes spaced ∼1 m apart (see Fig.…”

Section: Thermal Shield (20 K)mentioning

confidence: 99%

Origins Space Telescope cryo-thermal system

DiPirro

Fantano

D'Asto³

et al. 2021

J. Astron. Telesc. Instrum. Syst.

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The Origins Space Telescope's orders-of-magnitude improvement over the scientific capabilities of prior infrared (IR) missions is based on its cold telescope (4.5 K) combined with low-noise far-IR detectors and ultra-stable mid-IR detectors. A number of trades were made in favor of a design with staged cooling, avoiding warm objects in the cold zones and minimizing the number of deployments and their complexity. The result is an architecture that is easily to analyze thermally and straightforward to test in existing facilities. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Thermal Properties of Double-Aluminized Kapton at Low Temperatures

Cited by 11 publications

References 4 publications

Multiferroic/Polymer Flexible Structures Obtained by Atomic Layer Deposition

Multiferroic/Polymer Flexible Structures Obtained by Atomic Layer Deposition

Multifidelity uncertainty quantification and model validation of large-scale multidisciplinary systems

Origins Space Telescope cryo-thermal system

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