Cryogenic Thermal-Conductivity Measurements of Insulating Materials

2009 ◽  
pp. 25-25-18
Keyword(s):  
Thermal Conductivity ◽  
Conductivity Measurements ◽  
Insulating Materials

CCT Supplementary comparison S2 on thermal conductivity measurements of insulating materials by guarded hot plate

Metrologia ◽  
2020 ◽  
Vol 57 (1A) ◽  
pp. 03003-03003
Author(s):  
Bruno Hay ◽  
Robert Zarr ◽  
Clark Stacey ◽  
Nikolay Sokolov ◽  
Leonel Lira Cortés ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Conductivity Measurements ◽  
Hot Plate ◽  
Insulating Materials ◽  
Guarded Hot Plate

Measuring the Thermal Conductivity of Porous, Transparent SiO2 Films With Time Domain Thermoreflectance

2011 ◽  
Vol 133 (6) ◽  
Author(s):  
Patrick E. Hopkins ◽  
Bryan Kaehr ◽  
Leslie M. Phinney ◽  
Timothy P. Koehler ◽  
Anne M. Grillet ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Time Domain ◽  
Optical Measurements ◽  
Conductivity Measurements ◽  
Glass Slides ◽  
Thermally Conductive ◽  
Surface Variability ◽  
Porous Nanomaterials ◽  
Structural Aspects ◽  
Nanoporous Structures

Nanocomposites offer unique capabilities of controlling thermal transport through the manipulation of various structural aspects of the material. However, measurements of the thermal properties of these composites are often difficult, especially porous nanomaterials. Optical measurements of these properties, although ideal due to the noncontact nature, are challenging due to the large surface variability of nanoporous structures. In this work, we use a vector-based thermal algorithm to solve for the temperature change and heat transfer in which a thin film subjected to a modulated heat source is sandwiched between two thermally conductive pathways. We validate our solution with time domain thermoreflectance measurements on glass slides and extend the thermal conductivity measurements to SiO2-based nanostructured films.

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