Pith Number

pith:V6GRUNCW

pith:2026:V6GRUNCWN6AJKU3FUVAYKHIFPH

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Electromagnetic coupling between subradiant plasmons and dye molecular excitons analyzed by spectral changes in ultrafast surface-enhanced fluorescence

Tamitake Itoh, Yuko S. Yamamoto

Ultrafast fluorescence enhancement factors reveal electromagnetic coupling between subradiant plasmons and dye excitons through peaks near scattering dips that blue-shift during quenching.

arxiv:2603.19869 v1 · 2026-03-20 · physics.optics · physics.chem-ph

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\pithnumber{V6GRUNCWN6AJKU3FUVAYKHIFPH}

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Claims

C1strongest claim

The spectral peaks of FR for subradiant resonances appear near the dips in Rayleigh scattering spectra, and these FR peaks exhibit blue-shifts during the quenching processes of both ultrafast SEF and SERRS; these static and temporal properties are reproduced by a coupled oscillator model by increasing the linewidths of the radiant plasmon resonance and decreasing the EM coupling energies.

C2weakest assumption

That the broad background in SERRS spectra can be directly interpreted as EM enhancement factors FR arising solely from ultrafast SEF without significant contributions from other processes, and that adjustments to plasmon linewidths and coupling energies in the coupled oscillator model independently capture the observed spectral changes without overfitting.

C3one line summary

Ultrafast SEF spectra show subradiant plasmon-exciton coupling through FR peaks near Rayleigh scattering dips and blue-shifts during quenching, reproduced in a coupled oscillator model by broadening radiant plasmon linewidths and reducing coupling energies.

Receipt and verification

First computed	2026-05-17T23:39:15.722862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af8d1a34566f80955365a541851d0579e6f90997d7025664fa08d333c6309620

Aliases

arxiv: 2603.19869 · arxiv_version: 2603.19869v1 · doi: 10.48550/arxiv.2603.19869 · pith_short_12: V6GRUNCWN6AJ · pith_short_16: V6GRUNCWN6AJKU3F · pith_short_8: V6GRUNCW

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/V6GRUNCWN6AJKU3FUVAYKHIFPH \
  | 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: af8d1a34566f80955365a541851d0579e6f90997d7025664fa08d333c6309620

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2750cf7ad26700ee6656eac567fccf36f2671e6ca88bb21ea4345ee78b359da9",
    "cross_cats_sorted": [
      "physics.chem-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-03-20T11:35:34Z",
    "title_canon_sha256": "f4a33313d0afb9b56cde4b41ab9d3f5a542878bba2ead942cbc222d763ae8a82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.19869",
    "kind": "arxiv",
    "version": 1
  }
}