Abstract
Spurious loss features were observed in mixed-powder compressed pellets measured in transmission using terahertz time-domain spectroscopy. Loss features were identified in two types of pellets: PTFE-glass microspheres and PTFE-lactose. The features were found to be dependent on grain size and concentration. An explanation is proposed, based on varying optical thickness of the sample material.
| Original language | English |
|---|---|
| Pages (from-to) | 569-572 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Terahertz Science & Technology |
| Volume | 13 |
| Issue number | 5 |
| Early online date | 27 Jun 2023 |
| DOIs | |
| Publication status | Published - 1 Sept 2023 |
Funding
This work was supported by the EPSRC and National Physical Laboratory through an industrial iCASE studentship under Grant EP/S02168X/1. This research was carried out on an EPSRC (EP/S02168X/1) funded compaction simulator and in the CMAC National Facility supported by UKRPIF (UK Research Partnership Fund) award from the Higher Education Funding Council for England (HEFCE) under Grant HH13054.
Keywords
- spectroscopy
- terahertz radiation
- terahertz materials
- terahertz time-domain spectroscopy