Double-negative-index ceramic aerogels for thermal superinsulation
Abstract
Aerogels hold promise as lightweight replacements for thermal insulation. However, poor mechanical stability has hampered progress in moving toward commercialization. Xu et al. designed a mechanical metamaterial that pinches in a small amount when you compress it (see the Perspective by Chhowalla and Jariwala). This is characteristic of materials with a negative Poisson's ratio and dramatically improves mechanical stability. The trick was using three-dimensional graphene structures to template the ceramic aerogels, thus producing a superinsulating material endowed with excellent mechanical properties.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 15, 2019
- Source ID
- 10.1126/science.aav7304
Entities
People
- Biwei Deng
- Chen Wang
- Chengzhang Wan
- Chris Dames
- Gary J Cheng
- Hongtao Sun
- Hui Li
- Huilong Fei
- Imran Shakir
- Jian Zhu
- Lei Wang
- Lele Peng
- Menglong Hao
- Qiangqiang Zhang
- Tao Du
- Tao Wang
- Timothy S. Fisher
- Wenli Chen
- Xiang Xu
- Xiang Zhang
- Xiangfeng Duan
- Xuexin Ren
- Yu Huang
- Yuan Hu
- Zhaoyang Lin
- Zipeng Zhao
Organizations
- Harbin Institute of Technology
- Hunan University
- King Saud University
- Lanzhou University
- Lawrence Berkeley National Laboratory
- New Jersey Institute of Technology
- Office of Naval Research
- Purdue University
- Southeast University
- University of California
- University of California, Los Angeles