The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Observation of Spurious Spectral Features in Mixed-Powder Compressed Pellets Measured by Terahertz Time-Domain Spectroscopy
Open accessPublished version of a preprint
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: polytetrafluoroethylene (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.
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Murphy et al. documented anomalous spectral features within two-part granular compacts that fluctuate depending on microsphere size and concentration.
“Research by Murphy et al. [17], [18], [19], [20] has documented the presence of anomalous spectral features within two-part granular compacts, which were observed to fluctuate d epending o n m icrosphere s ize a nd concentration.”
From Unveiling the Origin of Spurious Features in THz-TDS of Powder Compacts (2025) · cites this paper as [18]
In their recent work, the authors proposed an explanation for spurious features based on varying optical path lengths experienced by photons travelling through granular material and undergoing scattering.
“In our recent work, we proposed an explanation based on varying optical path lengths experienced by photons travelling through granular material and undergoing scattering [17], [18].”
From Unveiling the Origin of Spurious Features in THz-TDS of Powder Compacts (2025) · cites this paper as [18]
Citations
Cites
Dynamic range in terahertz time-domain transmission and reflection spectroscopy
Jepsen, P. U., & Fischer, B. M. (2005) · Optics Letters · doi:10.1364/ol.30.000029 · Cited by 382
Applications of Terahertz Spectroscopy in Biosystems
Plusquellic, D. F., Siegrist, K. M., Heilweil, E. J., & Esentürk, O. (2007) · ChemPhysChem · doi:10.1002/cphc.200700332 · Cited by 310
Terahertz time-domain spectroscopy: A new tool for the study of glasses in the far infrared
Naftaly, M., & Miles, R. E. (2005) · Journal of Non-Crystalline Solids · doi:10.1016/j.jnoncrysol.2005.08.003 · Cited by 125
Self-citationTerahertz Spectroscopic Analysis in Protein Dynamics: Current Status
Mancini, T., Mosetti, R., Marcelli, A., Petrarca, M., Lupi, S., & D’Arco, A. (2022) · Radiation · doi:10.3390/radiation2010008 · Cited by 69
Measuring Open Porosity of Porous Materials Using THz-TDS and an Index-Matching Medium
Naftaly, M., Tikhomirov, I., Hou, P., & Markl, D. (2020) · Sensors · doi:10.3390/s20113120 · Cited by 30
Self-citationPharmaceutical Terahertz Spectroscopy and Imaging
Zeitler, J. A. (2016) · Advances in delivery science and technology · doi:10.1007/978-1-4939-4029-5_5 · Cited by 29
Murphy, K. N., Naftaly, M., Nordon, A., & Markl, D. (2023) · Optical Materials Express · doi:10.1364/ome.494825 · Cited by 12
Self-citationAnalysis of THz Scattering of Compacted Granular Materials using THz-TDS
Murphy, K. N., Naftaly, M., Nordon, A., & Markl, D. (2022) · International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) · doi:10.1109/irmmw-thz50927.2022.9895792 · Cited by 4
Self-citationMurphy, K. N., Naftaly, M., Nordon, A., & Markl, D. (2023) · arXiv (Cornell University) · doi:10.48550/arxiv.2304.10974 · Cited by 1
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Quantitatively characterization of rare earth ore by terahertz time-domain spectroscopy
Zhang, T., Zheng, Z., Zhang, M., Li, S., Zheng, X., Huang, H., Shen, J., Zhang, Z., & Qiu, K. (2024) · Infrared Physics & Technology · doi:10.1016/j.infrared.2024.105587 · Cited by 10
Choi, D.-H. (2025) · Scientific Reports · doi:10.1038/s41598-025-85259-w · Cited by 6
Unveiling the Origin of Spurious Features in THz-TDS of Powder Compacts
Gorecki, J., Murphy, K. N., Markl, D., Burnett, A. D., & Naftaly, M. (2025) · IEEE Transactions on Terahertz Science and Technology · doi:10.1109/tthz.2025.3549944 · Cited by 4
“Research by Murphy et al. [17], [18], [19], [20] documented the presence of anomalous spectral features within two-part granular compacts, which were observed to fluctuate depending on microsphere size and concentration.”
Self-citationOkada, S., Kurahashi, N., & Tanida, Y. (2025) · PLoS ONE · doi:10.1371/journal.pone.0323421 · Cited by 4
Stereolithography 3D printing of PTFE-filled photopolymer composites with enhanced THz transparency
Phillips, L., Godden, H. J., Kendrick, J., Fox, N. R., Valavanis, A., Burnett, A. D., Kay, R. W., & Saleh, E. (2025) · Additive manufacturing · doi:10.1016/j.addma.2025.105057 · Cited by 2
Zheng, W., Pan, G., Zhu, F., & Zhang, A. (2024) · Measurement Science and Technology · doi:10.1088/1361-6501/ad6fc2 · Cited by 1
Metrics for spectral and spatial performance in terahertz spectroscopic imaging
Guidi, A. N., & Holzman, J. F. (2025) · Optics Express · doi:10.1364/oe.563027 · Cited by 1
Park, Y., Park, J., Auer, M., Shin, J. W., Kim, S., Yoon, W., Yun, H., Kim, D., Puc, U., Kim, C., et al. (2026) · Applied Physics Reviews · doi:10.1063/5.0333060 · Cited by 1
2023 Index IEEE Transactions on Terahertz Science and Technology Vol. 13
(2023) · IEEE Transactions on Terahertz Science and Technology · doi:10.1109/tthz.2023.3330301 · Cited by 1
(2023) · IEEE Transactions on Terahertz Science and Technology · doi:10.1109/tthz.2023.3304590
Metadata
- Authors
- Murphy, K. N., Markl, D., Nordon, A., & Naftaly, M.
- Affiliations
- University of Strathclyde (GB)
- National Physical Laboratory (GB)
- Venue
- IEEE Transactions on Terahertz Science and Technology
- Published
- 2023-09
- Volume
- 13
- Issue
- 5
- Pages
- 569-572
- ISSN
- 2156-342X (ISSN-L)
- 2156-3446
- OpenAlex
- W4382203507
- Cited by
- 11
- References
- 9
- Citations by year
- 2026: 1 · 2025: 5 · 2024: 2 · 2023: 3
- FWCI
- 0.81
- Type
- journal article
- Language
- en
- Open access
- green
- dx.doi.org
- Licence
- Locations
- IEEE Transactions on Terahertz Science and Technology (publishedVersion)
- Strathprints: The University of Strathclyde institutional repository (University of Strathclyde) (acceptedVersion)
- Figshare (submittedVersion, cc-by)
- Funders
- Engineering and Physical Sciences Research Council (EP/S02168X/1)
- National Physical Laboratory (EP/S02168X/1)
- UK Research Partnership Fund
- Higher Education Funding Council for England (HH13054)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Microwave and Dielectric Measurement Techniques
- Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
- Keywords
- grain size effects, particle concentration, optical depth
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