{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T10:59:06Z","timestamp":1790852346933,"version":"4.1.0"},"reference-count":60,"publisher":"AIP Publishing","issue":"13","license":[{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,10,7]]},"abstract":"<jats:p>Thermal processes in amorphous solid water (ASW), including those relevant to cryogenic and astrophysical environments, depend sensitively on its thermal conductivity, \u03ba. However, \u03ba is not a unique material constant for amorphous water; rather, it is governed by preparation and thermal history, which determine whether the structure is predominantly low-density or high-density. Amorphous water can be produced by hyperquenching micrometer-sized droplets to form hyperquenched glassy water (HGW), by low-temperature vapor deposition to form ASW, by pressure-induced amorphization of hexagonal ice to form high-density amorphous ice (HDA), and by transformation of HDA to low-density amorphous ice (LDA). Guided by reported structural correspondences linking HGW and ASW formed or annealed at higher temperatures to LDA-like structures and some very-low-temperature ASW deposits to structures with HDA-like characteristics, we analyze \u03ba data across liquid, crystalline, and amorphous forms of water to estimate limiting \u03ba values for nonporous amorphous water. We find \u03ba = (1.5 \u00b1 0.1) W\u00a0m\u22121\u00a0K\u22121 for LDA-like amorphous water in the 70\u2013100\u00a0K range and \u03ba = (0.2 \u00b1 0.1) W\u00a0m\u22121\u00a0K\u22121 for HDA-like amorphous water in the 10\u201330\u00a0K range. These results define limiting intrinsic \u03ba values for nonporous amorphous water and provide reference points for future treatments of porous ASW in vapor-deposited and astrophysical ice environments.<\/jats:p>","DOI":"10.1063\/5.0348901","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T10:40:41Z","timestamp":1790851241000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Thermal conductivity of water from ambient to cryogenic conditions: Thermal history effects in amorphous solid water"],"prefix":"10.1063","volume":"165","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1748-9175","authenticated-orcid":false,"given":"Ove","family":"Andersson","sequence":"first","affiliation":[{"name":"Department of Physics, Ume\u00e5 University 1 , 901 87 Ume\u00e5,","place":["Sweden"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Changqing","family":"Jin","sequence":"additional","affiliation":[{"name":"Institute of Physics, Chinese Academy of Sciences (IOPCAS) 2 , Beijing 100190,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2026,10,1]]},"reference":[{"key":"2026100106403618400_c1","doi-asserted-by":"publisher","first-page":"21259","DOI":"10.1073\/pnas.1210331110","volume":"109","year":"2012","journal-title":"Proc. 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