Physical Transformation AtlasPTA
Pathway · p-d8740e5ffa · candidate

Humidity gradient → Electrical work

Humidity gradientEvaporationMechanical motionRotating-machine generator actionCharge carriersElectrical work

Epistemic state of the route

known constituent relations
4 / 5 established or replicated · weakest constituent demonstrated
constituent maturity floor
K4 · experimentally observed
search for this exact route
Not assessed — complete composition not searched.
recorded-pathway overlap
shares relations, in order, with Evaporation-driven engine · 2/5 relations shared
route-level evidence
0 sources for the complete composition · 6 cited by the constituent steps
boundaries and interfaces
BOUNDARY compatible · no region transition

Explorematrix context · physics checks · steps · route evidence · constituent evidence · cite

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

D.17 × C.23 · Humidity gradient × Electrokineticfamily: ElectrokineticD.17 × C.14 · Humidity gradient × Electromagnetic inductionfamily: Electromagnetic induction

Steps

  1. 01
    chemical → chemical · loss to thermal
    liquid · humidity difference required
    refs [1] [2]
  2. 02
    Evaporation —produces→ Mechanical motiondemonstratedclaim record
    chemical → mechanical
    • hygroscopic spores or films that swell and shrink with humidity, driving a piston or oscillator
    refs [1]
  3. 03
    mechanical → electrical · loss to thermal
    • a shaft turning a rotor inside a stator, or a magnet moved past a coil
    conductor required · magnetic field required
    refs [3] [4]
  4. 04
    electrical → electrical · loss to thermal
    refs [3] [5]
  5. 05
    Charge carriers —converts into→ Electrical workestablishedclaim record
    electrical → electrical · loss to thermal
    • carriers driven through an external load at the potential difference the source maintains
    refs [6]

Evidence for the complete composition · 0

No source on record for this exact composition. The sources below support the individual steps, not the route as a whole.

Evidence for the constituent relations · 6

  1. [1]
    X. Chen et al.. Scaling up nanoscale water-driven energy conversion into evaporation-driven engines and generators (2015)
    Nature Communications 6, 7346 · doi:10.1038/ncomms8346 · crossref ✓ 2026-09-19 · record
  2. [2]
    A. Bejan. Advanced Engineering Thermodynamics (4th ed.) (2016)
    Wiley · doi:10.1002/9781119245964 · crossref ✓ 2026-09-19 · record
  3. [3]
    M. Faraday. Experimental researches in electricity (1832)
    Philosophical Transactions of the Royal Society 122, 125–162 · doi:10.1098/rstl.1832.0006 · crossref ✓ 2026-09-19 · record
  4. [4]
    S. L. Dixon, C. A. Hall. Fluid Mechanics and Thermodynamics of Turbomachinery (7th ed.) (2014)
    Butterworth-Heinemann · doi:10.1016/C2011-0-05059-7 · crossref ✓ 2026-09-19 · record
  5. [5]
    L. D. Landau, E. M. Lifshitz, L. P. Pitaevskii. Electrodynamics of Continuous Media (Course of Theoretical Physics, Vol. 8, 2nd ed.) (1984)
    Pergamon · book, no DOI · record
  6. [6]
    N. W. Ashcroft, N. D. Mermin. Solid State Physics (1976)
    Holt, Rinehart and Winston · book, no DOI · record

Cite this route

Physical Transformation Atlas (2026). route p-d8740e5ffa: Humidity gradient → Evaporation → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/path/d8740e5ffa

Ids and matrix addresses are stable across revisions; the revision hash identifies the exact canonical files the record was compiled from and is meta.data_hash in every /api export. Reuse terms: see the license field in any export.