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the claim
Certain materials become less dense as external pressure increases
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
4 sources for · 0 against

Certain materials exhibit anomalous mechanical properties, such as negative linear compressibility, causing specific dimensions or axes to expand as external pressure increases.

Evidence for · 4
Colossal Negative Linear Compressibility in Porous Organic Salts.
2020 · cited by 27
The study demonstrates negative linear compressibility in a crystalline porous organic salt, where dimensions expand under hydrostatic compression.
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The analysis

Several retrieved papers document the phenomenon of negative linear compressibility (NLC) in various crystals and organic salts, where specific crystallographic axes expand rather than contract under external hydrostatic pressure. Therefore, the claim is supported by multiple empirical sources.

More for · 3
Anomalous mechanical materials squeezing three-dimensional volume compressibility into one dimension
2020 · cited by 20
The paper discusses materials exhibiting negative linear compressibility, allowing them to expand in specific dimensions under pressure.
Effects of composition on crystal structure, thermal expansion, and response to pressure in ReO3-type MNbF6(M = Mn and Zn)
2019 · cited by 16
The research notes that rhombohedral MnNbF6 displays negative linear compressibility below approximately 3.5 GPa.
Negative Linear Compressibility and Interlayer Gap Closure in Layered Rare-Earth Hydroxyhalide (YCl(OH)2) under High Pressure.
2024 · cited by 2
The study observes negative linear compressibility along the b-axis of YCl(OH)2 under high pressure.
Everything we examined (12)
We also searched for evidence AGAINST this claim, not only for it.
  1. SARM1 is a metabolic sensor activated by an increased NMN/NAD<sup>+</sup> ratio to trigger axon degeneration.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Pressure-induced liquid-liquid transition in a family of ionic materialspeer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Negative thermal expansion due to negative area compressibility in TlGaSe2 semiconductor with layered crystalline structurepeer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Colossal Negative Linear Compressibility in Porous Organic Salts.peer-reviewedsupports
  5. Anomalous mechanical materials squeezing three-dimensional volume compressibility into one dimensionpeer-reviewedsupports
  6. Effects of composition on crystal structure, thermal expansion, and response to pressure in ReO3-type MNbF6(M = Mn and Zn)peer-reviewedsupports
  7. Flexible electrochemical energy storage devices and related applications: recent progress and challenges.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Insight into the Relationship between Negative Thermal Expansion and Structure Flexibility: The Case of Zn(CN)2-Type Compounds.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. Simulating Bacterial Membrane Models at the Atomistic Level: A Force Field Comparison.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Negative Linear Compressibility and Interlayer Gap Closure in Layered Rare-Earth Hydroxyhalide (YCl(OH)2) under High Pressure.peer-reviewedsupports
  11. Modelling the Effects of Hydrogen Pressure on Fatigue Crack Growth Behavior in SA372 Pressure Vessel Steelspeer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Molecular Simulation of Hydrogen Systems: From Properties and Methods to Applications and Future Directions.peer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked06 Aug 2026
judged → SUPPORTED · 8406 Aug 2026
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