Marangoni effect —produces→ Pressure gradient

Conditions

• a thermocapillary-driven liquid plug moves in a closed-ended microchannel and compresses the trapped gas; the pressure rise is the load presented to the compliant membrane

Evidence · 2

1. [1]
   P. S. Glockner, G. F. Naterer. Surface tension and frictional resistance of thermocapillary pumping in a closed microchannel (2006)

   International Journal of Heat and Mass Transfer 49(23–24), 4424–4436 · doi:10.1016/j.ijheatmasstransfer.2006.05.005 · record
2. [2]
   A. Odukoya, G. F. Naterer. Transient response of thermocapillary pumping of a droplet in a micro heat engine (2013)

   International Journal of Heat and Mass Transfer 58, 202–212 · doi:10.1016/j.ijheatmasstransfer.2012.11.009 · record

Related matrix context

This claim does not itself create a matrix cell. The context below belongs to Marangoni effect, the phenomenon it is about.

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

Uses of this claim

• Thermocapillary piezoelectric micro heat engineproposed in the literature, not demonstrated · 7 steps

• Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work4/5 established · weakly supported
• Temperature gradient → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work4/5 established · weakly supported
• Surface energy difference → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work4/5 established · weakly supported
• Surface energy difference → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work4/5 established · weakly supported
• Temperature gradient → Marangoni effect → Pressure gradient → Elastic deformation → Mechanical stress or strain → Elastocaloric effect → Cooling4/6 established · same energy form
• Temperature gradient → Marangoni effect → Pressure gradient → Elastic deformation → Mechanical stress or strain → Elastocaloric effect → Useful heat4/6 established · same energy form
• Surface energy difference → Marangoni effect → Pressure gradient → Elastic deformation → Mechanical stress or strain → Elastocaloric effect → Cooling4/6 established · weakly supported
• Surface energy difference → Marangoni effect → Pressure gradient → Elastic deformation → Mechanical stress or strain → Elastocaloric effect → Useful heat4/6 established · weakly supported
• Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work6/7 established · weakly supported
• Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work6/7 established · weakly supported
• Temperature gradient → Marangoni effect → Pressure gradient → Elastic deformation → Mechanical stress or strain → Direct piezoelectric effect → Separated surface charge → Electrical work6/7 established · weakly supported
• Temperature gradient → Marangoni effect → Pressure gradient → Elastic deformation → Mechanical stress or strain → Flexoelectric effect → Separated surface charge → Electrical work6/7 established · weakly supported
• Chemical potential difference → Combustion → Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work6/7 established · weakly supported
• Chemical potential difference → Combustion → Temperature gradient → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work6/7 established · weakly supported
• Electric potential difference → Peltier effect → Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work6/7 established · weakly supported
• Electric potential difference → Peltier effect → Temperature gradient → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work6/7 established · same energy form
• Electric potential difference → Ettingshausen effect → Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work6/7 established · weakly supported
• Electric potential difference → Ettingshausen effect → Temperature gradient → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work6/7 established · same energy form
• Incident radiation flux → Photothermal absorption → Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work6/7 established · weakly supported
• Incident radiation flux → Photothermal absorption → Temperature gradient → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work6/7 established · weakly supported
• Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work6/7 established · weakly supported
• Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Marangoni effect → Pressure gradient → Streaming potential → Ionic current → Electrical work6/7 established · weakly supported
• Surface energy difference → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work6/7 established · weakly supported
• Surface energy difference → Marangoni effect → Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work6/7 established · weakly supported

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Notes

Kept below demonstrated: the Odukoya device measured heater and droplet behaviour, while the pressure field feeding the membrane (about 0.1 kPa for a 13 μm deflection in the model) comes from the force balance, not a measurement.

Cite this claim

Physical Transformation Atlas (2026). claim claim:marangoni-produces-pressure: Marangoni effect —produces→ Pressure gradient. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/claim/marangoni-produces-pressure

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.