{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363388843671693696.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.aav7304"}},{"identifier":{"@type":"URI","@value":"https://syndication.highwire.org/content/doi/10.1126/science.aav7304"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.aav7304"}}],"dc:title":[{"@value":"Double-negative-index ceramic aerogels for thermal superinsulation"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Elastic ceramics</jats:title>\n          <jats:p>\n            Aerogels hold promise as lightweight replacements for thermal insulation. However, poor mechanical stability has hampered progress in moving toward commercialization. Xu\n            <jats:italic>et al.</jats:italic>\n            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.\n          </jats:p>\n          <jats:p>\n            <jats:italic>Science</jats:italic>\n            , this issue p.\n            <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" issue=\"6428\" page=\"723\" related-article-type=\"in-this-issue\" vol=\"363\" xlink:href=\"10.1126/science.aav7304\">723</jats:related-article>\n            ; see also p.\n            <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" issue=\"6428\" page=\"694\" related-article-type=\"in-this-issue\" vol=\"363\" xlink:href=\"10.1126/science.aaw5670\">694</jats:related-article>\n          </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383388843671693573","@type":"Researcher","foaf:name":[{"@value":"Xiang Xu"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."},{"@value":"Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693699","@type":"Researcher","foaf:name":[{"@value":"Qiangqiang Zhang"}],"jpcoar:affiliationName":[{"@value":"College of Civil Engineering and Mechanics, Key Laboratory of Mechanics on Disaster and Environment in Western China, Lanzhou University, Lanzhou 730000, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693569","@type":"Researcher","foaf:name":[{"@value":"Menglong Hao"}],"jpcoar:affiliationName":[{"@value":"Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA."},{"@value":"Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693576","@type":"Researcher","foaf:name":[{"@value":"Yuan Hu"}],"jpcoar:affiliationName":[{"@value":"Department of Mechanical and Aerospace Engineering and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693702","@type":"Researcher","foaf:name":[{"@value":"Zhaoyang Lin"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693697","@type":"Researcher","foaf:name":[{"@value":"Lele Peng"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693703","@type":"Researcher","foaf:name":[{"@value":"Tao Wang"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693701","@type":"Researcher","foaf:name":[{"@value":"Xuexin Ren"}],"jpcoar:affiliationName":[{"@value":"Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693700","@type":"Researcher","foaf:name":[{"@value":"Chen Wang"}],"jpcoar:affiliationName":[{"@value":"Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693578","@type":"Researcher","foaf:name":[{"@value":"Zipeng Zhao"}],"jpcoar:affiliationName":[{"@value":"Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693705","@type":"Researcher","foaf:name":[{"@value":"Chengzhang Wan"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693570","@type":"Researcher","foaf:name":[{"@value":"Huilong Fei"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693575","@type":"Researcher","foaf:name":[{"@value":"Lei Wang"}],"jpcoar:affiliationName":[{"@value":"State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693698","@type":"Researcher","foaf:name":[{"@value":"Jian Zhu"}],"jpcoar:affiliationName":[{"@value":"State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693706","@type":"Researcher","foaf:name":[{"@value":"Hongtao Sun"}],"jpcoar:affiliationName":[{"@value":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA."},{"@value":"Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693571","@type":"Researcher","foaf:name":[{"@value":"Wenli Chen"}],"jpcoar:affiliationName":[{"@value":"Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693707","@type":"Researcher","foaf:name":[{"@value":"Tao Du"}],"jpcoar:affiliationName":[{"@value":"Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, P. R. China."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693572","@type":"Researcher","foaf:name":[{"@value":"Biwei Deng"}],"jpcoar:affiliationName":[{"@value":"School of Industrial Engineering, Purdue University, West Lafayette, IN 47907, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693696","@type":"Researcher","foaf:name":[{"@value":"Gary J. Cheng"}],"jpcoar:affiliationName":[{"@value":"School of Industrial Engineering, Purdue University, West Lafayette, IN 47907, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693708","@type":"Researcher","foaf:name":[{"@value":"Imran Shakir"}],"jpcoar:affiliationName":[{"@value":"Sustainable Energy Technologies Centre, College of Engineering, King Saud University, Riyadh, Kingdom of Saudi Arabia."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693704","@type":"Researcher","foaf:name":[{"@value":"Chris Dames"}],"jpcoar:affiliationName":[{"@value":"Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA."},{"@value":"Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843671693568","@type":"Researcher","foaf:name":[{"@value":"Timothy S. 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