Kapitza resistance
E168970
Kapitza resistance is the thermal boundary resistance that occurs at the interface between a solid and liquid helium, causing a temperature discontinuity when heat flows across the boundary.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Kapitsa resistance | 1 |
| Kapitza resistance canonical | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
physical phenomenon
ⓘ
thermal boundary resistance ⓘ transport phenomenon ⓘ |
| affects | cooling efficiency at cryogenic temperatures ⓘ |
| causes | temperature discontinuity across an interface ⓘ |
| dependsOn |
acoustic mismatch between materials
ⓘ
material properties of the solid ⓘ phonon transmission coefficient ⓘ surface quality ⓘ temperature ⓘ |
| hasAlternativeName |
Kapitza thermal boundary resistance
ⓘ
thermal boundary resistance ⓘ |
| hasUnit | square meter kelvin per watt ⓘ |
| isImportantFor |
cryogenic heat exchangers
ⓘ
design of cryogenic detectors ⓘ low-temperature calorimetry ⓘ superconducting device cooling ⓘ |
| isMeasuredBy | temperature drop per unit heat flux ⓘ |
| isModeledBy |
acoustic mismatch model
ⓘ
diffuse mismatch model ⓘ |
| isNamedAfter |
Peter Kapitza
ⓘ
surface form:
Pyotr Kapitza
|
| isReducedBy |
improving interfacial contact
ⓘ
increasing interface area ⓘ using intermediate coupling layers ⓘ |
| isRelatedTo |
interfacial heat transfer
ⓘ
phonon heat conduction ⓘ thermal contact resistance ⓘ |
| isSignificantAt | low temperatures ⓘ |
| isSignificantIn |
cryogenic engineering
ⓘ
cryogenics ⓘ low-temperature physics ⓘ quantum fluids research ⓘ superfluid helium experiments ⓘ |
| isTypeOf | interfacial thermal resistance ⓘ |
| limits | heat transfer across solid–helium interfaces ⓘ |
| occursAt |
interface between a solid and liquid helium
ⓘ
solid–quantum fluid interfaces ⓘ |
| occursBetween |
solid and liquid helium
ⓘ
solid and superfluid helium ⓘ |
| relatesTo |
heat flow across a boundary
ⓘ
nonequilibrium temperature profiles at interfaces ⓘ phonon scattering at interfaces ⓘ phonon transmission across boundaries ⓘ |
| symbol | R_K ⓘ |
| temperatureDependence | typically decreases with increasing temperature in helium systems ⓘ |
| wasDiscoveredBy |
Peter Kapitza
ⓘ
surface form:
Pyotr Kapitza
|
| wasFirstObservedIn | solid–liquid helium interfaces ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.