{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T03:29:13Z","timestamp":1792639753246,"version":"4.5.0"},"reference-count":46,"publisher":"Public Library of Science (PLoS)","issue":"3","license":[{"start":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T00:00:00Z","timestamp":1773100800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>\n                    An atomistic study is conducted to elucidate the fracture behavior of pristine and centrally pre-cracked T\n                    <jats:sub>4,4,4<\/jats:sub>\n                    -graphyne nanosheets (150 \u00c5\u2009\u00d7\u2009150 \u00c5) under uniaxial tension in both X- and Y-directions. Stress\u2013strain responses are analyzed as functions of crack length (30\u201360 \u00c5), orientation (0\u00b0\u201390\u00b0), and temperature (200\u20131000\u2009K). Elastic modulus degradation is captured by power-law and trigonometric models, yielding high correlation coefficients. Ultimate tensile strength and fracture strain are shown to decline with increasing crack length and temperature, while toughness and mode I fracture toughness illustrate anisotropic energy absorption and crack-tip shielding effects, particularly under X-loading where ligament bridging and bond rotation mechanisms are activated. Thermal softening is modeled via the Wachtman equation, revealing near-linear modulus reduction and an inversion of directional stiffness at elevated temperatures. The results demonstrate that crack-length thresholds (~30% of sheet width) and mixed-mode loading conditions critically govern the transition from ductile-like to brittle fracture regimes in anisotropic 2D graphyne nanosheets.\n                  <\/jats:p>","DOI":"10.1371\/journal.pone.0329337","type":"journal-article","created":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T17:41:58Z","timestamp":1773164518000},"page":"e0329337","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":1,"title":["Anisotropic fracture mechanics of pre-cracked T4,4,4-Graphyne Nanosheets: Effects of crack geometry and temperature"],"prefix":"10.1371","volume":"21","author":[{"given":"Chuanyuan","family":"Tan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2006-3626","authenticated-orcid":true,"given":"Ali","family":"Ghasemi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2026,3,10]]},"reference":[{"issue":"3","key":"pone.0329337.ref001","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1007\/s11837-022-05505-8","article-title":"Graphene Properties, Synthesis and Applications: A Review","volume":"75","author":"AR Urade","year":"2023","journal-title":"JOM (1989)"},{"key":"pone.0329337.ref002","doi-asserted-by":"crossref","first-page":"100474","DOI":"10.1016\/j.rineng.2022.100474","article-title":"Band gap formation of 2D materialin graphene: Future prospect and challenges","volume":"15","author":"R 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