Double-negative-index ceramic aerogels for thermal superinsulation

Xiang Xu; Qiangqiang Zhang; Menglong Hao; Yuan Hu; Zhaoyang Lin; Lele Peng; Tao Wang; Xuexin Ren; Chen Wang; Zipeng Zhao; Chengzhang Wan; Huilong Fei; Lei Wang; Jian Zhu; Hongtao Sun; Wenli Chen; Tao Du; Biwei Deng; Gary J. Cheng; Imran Shakir; Chris Dames; Timothy S. Fisher; Xiang Zhang; Hui Li; Yu Huang; Xiangfeng Duan

doi:10.1126/science.aav7304

Double-negative-index ceramic aerogels for thermal superinsulation

Xiang Xu, Qiangqiang Zhang, Menglong Hao, Yuan Hu, Zhaoyang Lin, Lele Peng, Tao Wang, Xuexin Ren, Chen Wang, Zipeng Zhao, Chengzhang Wan, Huilong Fei, Lei Wang, Jian Zhu, Hongtao Sun, Wenli Chen, Tao Du, Biwei Deng, Gary J. Cheng, Imran ShakirChris Dames, Timothy S. Fisher, Xiang Zhang, Hui Li, Yu Huang, Xiangfeng Duan

Mechanical and Industrial Engr

Research output: Contribution to journal › Article › peer-review

580 Scopus citations

Abstract

Ceramic aerogels are attractive for thermal insulation but plagued by poor mechanical stability and degradation under thermal shock. In this study, we designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson’s ratio (−0.25) and a negative linear thermal expansion coefficient (−1.8 × 10 ⁻⁶ per °C). Our aerogels display robust mechanical and thermal stability and feature ultralow densities down to ~0.1 milligram per cubic centimeter, superelasticity up to 95%, and near-zero strength loss after sharp thermal shocks (275°C per second) or intense thermal stress at 1400°C, as well as ultralow thermal conductivity in vacuum [~2.4 milliwatts per meter-kelvin (mW/m·K)] and in air (~20 mW/m·K). This robust material system is ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.

Original language	English (US)
Pages (from-to)	723-727
Number of pages	5
Journal	Science
Volume	363
Issue number	6428
DOIs	https://doi.org/10.1126/science.aav7304
State	Published - Feb 15 2019

All Science Journal Classification (ASJC) codes

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10.1126/science.aav7304

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@article{f5c4d4f7b251413790a683c59637c28e,

title = "Double-negative-index ceramic aerogels for thermal superinsulation",

abstract = " Ceramic aerogels are attractive for thermal insulation but plagued by poor mechanical stability and degradation under thermal shock. In this study, we designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson{\textquoteright}s ratio (−0.25) and a negative linear thermal expansion coefficient (−1.8 × 10 −6 per °C). Our aerogels display robust mechanical and thermal stability and feature ultralow densities down to ~0.1 milligram per cubic centimeter, superelasticity up to 95%, and near-zero strength loss after sharp thermal shocks (275°C per second) or intense thermal stress at 1400°C, as well as ultralow thermal conductivity in vacuum [~2.4 milliwatts per meter-kelvin (mW/m·K)] and in air (~20 mW/m·K). This robust material system is ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.",

author = "Xiang Xu and Qiangqiang Zhang and Menglong Hao and Yuan Hu and Zhaoyang Lin and Lele Peng and Tao Wang and Xuexin Ren and Chen Wang and Zipeng Zhao and Chengzhang Wan and Huilong Fei and Lei Wang and Jian Zhu and Hongtao Sun and Wenli Chen and Tao Du and Biwei Deng and Cheng, {Gary J.} and Imran Shakir and Chris Dames and Fisher, {Timothy S.} and Xiang Zhang and Hui Li and Yu Huang and Xiangfeng Duan",

year = "2019",

month = feb,

day = "15",

doi = "10.1126/science.aav7304",

language = "English (US)",

volume = "363",

pages = "723--727",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

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}

Xu, X, Zhang, Q, Hao, M, Hu, Y, Lin, Z, Peng, L, Wang, T, Ren, X, Wang, C, Zhao, Z, Wan, C, Fei, H, Wang, L, Zhu, J, Sun, H, Chen, W, Du, T, Deng, B, Cheng, GJ, Shakir, I, Dames, C, Fisher, TS, Zhang, X, Li, H, Huang, Y & Duan, X 2019, 'Double-negative-index ceramic aerogels for thermal superinsulation', Science, vol. 363, no. 6428, pp. 723-727. https://doi.org/10.1126/science.aav7304

TY - JOUR

T1 - Double-negative-index ceramic aerogels for thermal superinsulation

AU - Xu, Xiang

AU - Zhang, Qiangqiang

AU - Hao, Menglong

AU - Hu, Yuan

AU - Lin, Zhaoyang

AU - Peng, Lele

AU - Wang, Tao

AU - Ren, Xuexin

AU - Wang, Chen

AU - Zhao, Zipeng

AU - Wan, Chengzhang

AU - Fei, Huilong

AU - Wang, Lei

AU - Zhu, Jian

AU - Sun, Hongtao

AU - Chen, Wenli

AU - Du, Tao

AU - Deng, Biwei

AU - Cheng, Gary J.

AU - Shakir, Imran

AU - Dames, Chris

AU - Fisher, Timothy S.

AU - Zhang, Xiang

AU - Li, Hui

AU - Huang, Yu

AU - Duan, Xiangfeng

PY - 2019/2/15

Y1 - 2019/2/15

N2 - Ceramic aerogels are attractive for thermal insulation but plagued by poor mechanical stability and degradation under thermal shock. In this study, we designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson’s ratio (−0.25) and a negative linear thermal expansion coefficient (−1.8 × 10 −6 per °C). Our aerogels display robust mechanical and thermal stability and feature ultralow densities down to ~0.1 milligram per cubic centimeter, superelasticity up to 95%, and near-zero strength loss after sharp thermal shocks (275°C per second) or intense thermal stress at 1400°C, as well as ultralow thermal conductivity in vacuum [~2.4 milliwatts per meter-kelvin (mW/m·K)] and in air (~20 mW/m·K). This robust material system is ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.

AB - Ceramic aerogels are attractive for thermal insulation but plagued by poor mechanical stability and degradation under thermal shock. In this study, we designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson’s ratio (−0.25) and a negative linear thermal expansion coefficient (−1.8 × 10 −6 per °C). Our aerogels display robust mechanical and thermal stability and feature ultralow densities down to ~0.1 milligram per cubic centimeter, superelasticity up to 95%, and near-zero strength loss after sharp thermal shocks (275°C per second) or intense thermal stress at 1400°C, as well as ultralow thermal conductivity in vacuum [~2.4 milliwatts per meter-kelvin (mW/m·K)] and in air (~20 mW/m·K). This robust material system is ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.

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U2 - 10.1126/science.aav7304

DO - 10.1126/science.aav7304

M3 - Article

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AN - SCOPUS:85061586988

SN - 0036-8075

VL - 363

SP - 723

EP - 727

JO - Science

JF - Science

IS - 6428

ER -

Double-negative-index ceramic aerogels for thermal superinsulation

Abstract

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