Pith Number

pith:CNC4YYW4

pith:2025:CNC4YYW4P6KICGDOW2I6VM4K5W

1 verified not anchored not stored refs pending

Challenges and opportunities in piezoelectric polymers: Effect of oriented amorphous fraction in ferroelectric semicrystalline polymers

Elshad Allahyarov, Guanchun Rui, Lei Zhu, Philip L. Taylor, Qin Zou, Thumawadee Wongwirat, Yanfei Huang, Zhiwen Zhu

In ferroelectric polymers such as PVDF, more than 85 percent of the d31 piezoelectric coefficient arises from the oriented amorphous fraction through Poisson-ratio effects rather than from the polar crystals.

arxiv:2506.18722 v1 · 2025-06-23 · cond-mat.mtrl-sci · cond-mat.soft · physics.chem-ph

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\usepackage{pith}
\pithnumber{CNC4YYW4P6KICGDOW2I6VM4K5W}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

✓ Author claim 1 verified · sign in to claim

Elshad Allahyarov orcid verified

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

the crystal contribution to the piezoelectric strain coefficient d31 is determined to be less than 10%, primarily owing to the difficulty in changing the molecular bond lengths and bond angles. Instead, >85% contribution is from Poisson's ratio, which is closely related to the oriented amorphous fraction (OAF)

C2weakest assumption

That the electrostrictive conformation change observed in MD simulations of OAF chains quantitatively accounts for the measured macroscopic d31 without additional fitting parameters or unaccounted interfacial effects.

C3one line summary

Over 85% of the d31 piezoelectric coefficient in stretched ferroelectric polymers comes from electrostrictive conformation changes in the oriented amorphous fraction, not the crystalline phase.

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-17T23:39:21.917944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1345cc62dc7f9481186eb691eab38aedac724ef618960b3879b13fb4839eb2d4

Aliases

arxiv: 2506.18722 · arxiv_version: 2506.18722v1 · doi: 10.48550/arxiv.2506.18722 · pith_short_12: CNC4YYW4P6KI · pith_short_16: CNC4YYW4P6KICGDO · pith_short_8: CNC4YYW4

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CNC4YYW4P6KICGDOW2I6VM4K5W \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1345cc62dc7f9481186eb691eab38aedac724ef618960b3879b13fb4839eb2d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b30bc425601a60783db8cad1a52e0cf34f2297f8c7297ef1aa331dcb9ebf159e",
    "cross_cats_sorted": [
      "cond-mat.soft",
      "physics.chem-ph"
    ],
    "license": "",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2025-06-23T14:57:47Z",
    "title_canon_sha256": "b9557782e15891d53b0b78a07c0513baac79a7b0f9220e45ced89e5e3d4f2a33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.18722",
    "kind": "arxiv",
    "version": 1
  }
}