Amorphous solid

Quantum mechanics

Materials science

Chromatography

Thermal conductivity

Physical chemistry

Thermodynamics

Physics

Dielectric

Optics

Thermal

Conductivity

Composite material

Analytical Chemistry (journal)

Thermal conductivity measurement

Crystallography

Chemistry

Optoelectronics

Review of Scientific Instruments

An ac technique for measuring the thermal conductivity of dielectric solids between 30 and 750 K is described. This technique, the 3ω method, can be applied to bulk amorphous solids and crystals as well as amorphous films tens of microns thick. Errors from black‐body radiation are calculated to be less than 2% even at 1000 K. Data for a‐SiO2, Pyrex 7740, and Pyroceram 9606 are compared to results obtained by conventional techniques.

Thermal conductivity measurement from 30 to 750 K: the 3ω method