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Soc. Open Sci."],"published-print":{"date-parts":[[2024,2]]},"abstract":"<jats:p>As a consequence of intense investigation on possible topologies of periodic lattices, the limit of specific elastic moduli that can be achieved solely through unit cell-level geometries in artificially engineered lattice-based materials has reached a point of saturation. There exists a robust rationale to involve more elementary-level mechanics for pushing such boundaries further to develop extreme lightweight multi-functional materials with adequate stiffness. We propose a novel class of inflatable lattice materials where the global-level stiffness can be derived based on a fundamentally different mechanics compared with conventional lattices having beam-like solid members, leading to extreme specific stiffness due to the presence of air in most of the lattice volume. Furthermore, such inflatable lattices would add multi-functionality in terms of on-demand performances such as compact storing, portability and deployment along with active stiffness modulation as a function of air pressure. We have developed an efficient unit cell-based analytical approach therein to characterize the effective elastic properties including the effect of non-rigid joints. The proposed inflatable lattices would open new frontiers in engineered materials and structures that will find critical applications in a range of technologically demanding industries such as aircraft structures, defence, soft robotics, space technologies, biomedical and various other mechanical systems.<\/jats:p>","DOI":"10.1098\/rsos.231272","type":"journal-article","created":{"date-parts":[[2024,2,14]],"date-time":"2024-02-14T01:24:29Z","timestamp":1707873869000},"update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":17,"title":["Pneumatic elastostatics of multi-functional inflatable lattices: realization of extreme specific stiffness with active modulation and deployability"],"prefix":"10.1098","volume":"11","author":[{"given":"P.","family":"Sinha","sequence":"first","affiliation":[{"name":"Department of Aerospace Engineering, Indian Institute of Technology Kanpur, Kanpur, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0778-6515","authenticated-orcid":true,"given":"T.","family":"Mukhopadhyay","sequence":"additional","affiliation":[{"name":"School of Engineering, University of Southampton, Southampton, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","published-online":{"date-parts":[[2024,2,14]]},"reference":[{"key":"e_1_3_8_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.mser.2023.100745"},{"key":"e_1_3_8_3_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-023-41679-8"},{"key":"e_1_3_8_4_2","doi-asserted-by":"publisher","DOI":"10.1039\/C6SM01271J"},{"key":"e_1_3_8_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/adem.201800864"},{"key":"e_1_3_8_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201701850"},{"key":"e_1_3_8_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.apmt.2019.100537"},{"key":"e_1_3_8_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eml.2022.101677"},{"key":"e_1_3_8_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202008252"},{"key":"e_1_3_8_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202211561"},{"key":"e_1_3_8_11_2","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.9b06081"},{"key":"e_1_3_8_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-7683(98)00225-X"},{"key":"e_1_3_8_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijmecsci.2014.02.008"},{"key":"e_1_3_8_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.actamat.2022.118226"},{"key":"e_1_3_8_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.compositesb.2020.108379"},{"key":"e_1_3_8_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.actamat.2017.01.004"},{"key":"e_1_3_8_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.compositesb.2022.109733"},{"key":"e_1_3_8_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.euromechsol.2023.104922"},{"key":"e_1_3_8_19_2","doi-asserted-by":"publisher","DOI":"10.1039\/C6RA27333E"},{"key":"e_1_3_8_20_2","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201603959"},{"key":"e_1_3_8_21_2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.99.094108"},{"key":"e_1_3_8_22_2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.107.105506"},{"key":"e_1_3_8_23_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.4922873"},{"key":"e_1_3_8_24_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.4748311"},{"key":"e_1_3_8_25_2","first-page":"1417055","article-title":"Metafluidic metamaterial: a review","volume":"3","author":"Zhang W","year":"2018","unstructured":"Zhang W, Song Q, Zhu W, Shen Z, Chong P, Tsai DP, Qiu C, Liu AQ. 2018 Metafluidic metamaterial: a review. 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