{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"a690763ac836bb606f07ecad14e3666455e057d10957002ea5c399c4306392d5","created":"2026-10-03T07:17:50Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"4c57dccf530cd8d1b38cb20d62e41e47d6950b5424815a7849b933305fa9c9cc","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"bio.jamming-rigidity","field":"bio","n":"1","review_cite":"M. van Hecke, Jamming of soft particles: geometry, mechanics, scaling and isostaticity, Journal of Physics: Condensed Matter, 2010","review_link":"https://doi.org/10.1088/0953-8984/22/3/033101","review_verified":"true","summary":"Foams, emulsions, sand and glasses become rigid when their particles are packed tightly enough to block each other, without forming a crystal. The point where this happens and the unusual vibrations of the resulting solid follow scaling laws whose full theory is incomplete.","title":"Jamming, marginal stability and vibrations of amorphous solids","topic_ref":null,"why":"Jamming decides whether granular and soft materials flow or carry load, and the vibrations of amorphous solids set their heat transport and low-temperature thermal properties."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"e88cb77371bb7a86f0fbdb1f952ba3eab78bc8141039cb805db532ac7cced95b","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"f933a6aaf15e22e9ea902410d52d44597588830cf910208c284e7b88b4f4178d","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"irP6HGSQRAfRzvhZ9WVHjQZUt7mJBmL6lDTWWZ4XqjoQqPkJp51yElMPcIKSAW8pHjJx1L0oVOrF58njXYA8Aw"},"schema":"pubphys.envelope/1"},"record_hash":"e88cb77371bb7a86f0fbdb1f952ba3eab78bc8141039cb805db532ac7cced95b","leaf_index":93}