Abstract
This chapter summarizes the most accurate and reliable methods for determining heat transport properties of bulk condensed matter, focusing on principles of operation. Methods which are amply described elsewhere are minimally discussed. Methods for electrically insulating solids are the focus, with brief coverage of methods for metals and liquids. Laser-flash analysis is described in detail because it is the only method that is both free of systematic errors (contact losses, surface radiation, and ballistic internal radiative gains) and records thermal evolution in response to a perturbation: the latter permits distinguishing between independent mechanisms with different diffusivities. Limitations of periodic methods (e.g., the technologically important 3? and thermoreflectance methods) and steady-state experiments are explained. Comparisons of data from different methods are made to quantify systematic errors. Because all microscopic models are based on gas behavior, methods for measuring gas and liquid transport properties are discussed.
| Original language | English |
|---|---|
| Title of host publication | Measurements, Mechanisms, and Models of Heat Transport |
| Publisher | Elsevier |
| Pages | 99-142 |
| Number of pages | 44 |
| ISBN (Electronic) | 9780128099810 |
| ISBN (Print) | 9780128099827 |
| DOIs | |
| State | Published - Jan 1 2018 |
Keywords
- Contact resistance
- Hardness
- Internal radiative transfer
- Laser-flash analysis
- Periodic methods
- Steady-state methods
- Surface radiative losses
- Thermal evolution
- Transient methods
- Transparency