Abstract
The strip inverse-configuration photopyroelectric technique to measure the thermal conductivity of bulk samples of metals, semiconductors, and insulators is presented. It utilizes a narrow (500 μm wide) strip of a 9 μm thick pyroelectric sensor in an inverse configuration. A mathematical model is outlined that yields an expression for the output voltage of the pyroelectric sensor following heat dissipation into the sample, in a frequency range where the proposed measurement is possible. Experimentally, the sensor was operated in an "isothermal-voltage" mode to identify the frequency regime within which the measurement of the thermal conductivity of representative samples was possible after suitable calibration of the system.
| Original language | English |
|---|---|
| Pages (from-to) | 469-471 |
| Number of pages | 3 |
| Journal | Applied physics letters |
| Volume | 78 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 22 Jan 2001 |
| Externally published | Yes |