Physical Transformation AtlasPTA
Pathway · p-7fe7b4f2ef · candidate

Nuclear binding-energy difference → Mechanical work

Nuclear binding-energy differenceNuclear fusionTemperature gradientThermo-osmosisFluid flowAerodynamic and hydrodynamic liftMechanical motionMechanical work

Epistemic state of the route

known constituent relations
5 / 7 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 Thermal-osmosis electrokinetic generator · 2/7 relations shared
route-level evidence
0 sources for the complete composition · 9 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.20 × C.27 · Nuclear binding-energy difference × Nuclear heatfamily: Nuclear heatD.20 × C.37 · Nuclear binding-energy difference × Thermo-osmoticfamily: Thermo-osmoticD.20 × C.24 · Nuclear binding-energy difference × Turbomachineryfamily: Turbomachinery

Typed bounds on this route

Every limit the atlas holds for this route, as constraint records: reached through bounded_by claims on the route's own entities. Hard bounds (an upper bound or a formula) decide the thermodynamic-bound check above; benchmarks, constitutive relations and resource limits are listed and never decisive. No prose limit exists anywhere (pass 42).

  • Carnot limit · formula-bound · hard, applies to this route
    η ≤ 1 − T_c/T_h for any heat engine between reservoirs at T_h and T_c
  • Betz limit · upper-bound · hard, filtered out by its applicability
    C_p ≤ 16/27 ≈ 59.3% of the kinetic power through the rotor disc

Steps

  1. 01
    nuclear → kinetic · loss to radiative
    • for a power-producing D–T thermonuclear plasma: ion temperatures of order 10 keV and a sufficient density–confinement product (Lawson); these are power-balance conditions, not prerequisites for an individual fusion reaction
    plasma · above ~700 K
    Fusion reactions and target-level fusion energy release are experimentally demonstrated (target gain > 1 at NIF, 2022–2024); net electrical output from a fusion power plant is not.
    refs [1] [2] [3]
  2. 02
    kinetic → thermal · loss to radiative
    • energetic products (neutrons, alphas) deposit their kinetic energy in a blanket or the plasma, which then runs hotter than its surroundings
    refs [2] [3]
  3. 03
    thermal → kinetic · loss to thermal
    • a membrane separating two reservoirs of the same liquid at different temperatures; the flow direction depends on the membrane–liquid interaction
    selective membrane required · temperature gradient required · liquid
    refs [4] [5]
  4. 04
    Thermo-osmosis —produces→ Fluid flowestablishedclaim record
    kinetic → kinetic
    Confined in a nanochannel (Zhao 2020) or collected as a pressurised bulk flow: Straub et al. 2016 measured 3.53 W/m² of hydraulic power from the thermo-osmotic flux, so the produced flow can load a turbine.
    refs [4] [6]
  5. 05
    kinetic → mechanical · loss to thermal
    • a rotor or vane in the produced stream at a working angle of attack; the driven flow must carry a directed momentum flux for a blade to load
    bulk flow required
    refs [7] [8]
  6. 06
    mechanical → mechanical
    refs [8]
  7. 07
    Mechanical motion —converts into→ Mechanical workestablishedclaim record
    mechanical → mechanical · loss to thermal
    refs [9]

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 · 9

  1. [1]
    H. A. Bethe. Energy production in stars (1939)
    Physical Review 55, 434 · doi:10.1103/PhysRev.55.434 · crossref ✓ 2026-09-19 · record
  2. [2]
    J. D. Lawson. Some criteria for a power producing thermonuclear reactor (1957)
    Proceedings of the Physical Society B 70, 6–10 · doi:10.1088/0370-1301/70/1/303 · crossref ✓ 2026-09-19 · record
  3. [3]
    H. Abu-Shawareb, et al. (Indirect Drive ICF Collaboration). Achievement of target gain larger than unity in an inertial fusion experiment (2024)
    Physical Review Letters 132, 065102 · doi:10.1103/PhysRevLett.132.065102 · crossref ✓ 2026-09-19 · record
  4. [4]
    V. M. Barragán, S. Kjelstrup. Thermo-osmosis in Membrane Systems: A Review (2017)
    Journal of Non-Equilibrium Thermodynamics, 42 · doi:10.1515/jnet-2016-0088 · crossref ✓ 2026-09-20 · record
  5. [5]
    S. R. de Groot, P. Mazur. Non-Equilibrium Thermodynamics (1962)
    North-Holland · book, no DOI · record
  6. [6]
    A. P. Straub et al.. Harvesting low-grade heat energy using thermo-osmotic vapour transport through nanoporous membranes (2016)
    Nature Energy 1, 16090 · doi:10.1038/nenergy.2016.90 · crossref ✓ 2026-09-20 · record
  7. [7]
    A. Betz. Das Maximum der theoretisch möglichen Ausnützung des Windes durch Windmotoren (1920)
    Zeitschrift für das gesamte Turbinenwesen 26, 307–309 · paper, no DOI · record
  8. [8]
    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
  9. [9]
    A. Bejan. Advanced Engineering Thermodynamics (4th ed.) (2016)
    Wiley · doi:10.1002/9781119245964 · crossref ✓ 2026-09-19 · record

Cite this route

Physical Transformation Atlas (2026). route p-7fe7b4f2ef: Nuclear binding-energy difference → Nuclear fusion → Temperature gradient → Thermo-osmosis → Fluid flow → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/path/7fe7b4f2ef

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.