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Directional freezing

thermodynamic process

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionNov 4, 2025
Entity authorityQ115517808 ↗
Source-derived summary

Directional freezing freezes from only one direction.

Directional freezing can freeze water, from only one direction or side of a container, into clear ice.

Directional freezing in a domestic freezer can be done by putting water in a insulated container so that the water freezes from the top down, and removing before fully frozen, so that the minerals in the water are not frozen.

F Hoffmann La Roche AG, Roche Diagnostics GmbH has a 2017 directional freezing patent for drying solid material.

See also

Aquamelt

Clear ice

Hydrogel

Freeze-casting§Static vs. dynamic freezing profiles

Molecular self-assembly

Further reading

Zhang, Haifei; Hussain, Irshad; Brust, Mathias; Butler, Michael F.; Rannard, Steven P.; Cooper, Andrew I. (1 October 2005). "Aligned two- and three-dimensional structures by directional freezing of polymers and nanoparticles". Nature Materials. 4 (10): 787–793. Bibcode:2005NatMa...4..787Z. doi:10.1038/nmat1487.

Editorial summary

Begin with the source’s own compact description: “Directional freezing” is thermodynamic process. The dossier treats that line as a proposition to test through Directional, freezing and thermodynamic, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2017, 2005, 1038—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Directional, freezing and thermodynamic is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “thermodynamic process” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Nov 4, 2025. The linked authority identifier is Q115517808. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2017, 2005 and 1038.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from “Directional freezing” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.