Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation

Fletcher, J.R.; Swift, G.P.; Dai, De Chang; Levitt, J.A.; Chamberlain, J.M.

doi:10.1063/1.2403860

All Outputs (6)

Post-16 students’ experience of practical science during the COVID-19 pandemic and the impact on students’ self-efficacy in practical work (2024)
Journal Article
Cramman, H., Arenas, B., Awais, R., Balaban, C., Cropper, C., Dennis, F., Finch, K., Gray, H., Hall, A., Kitchen, G., Norman, K., O’Driscoll, L., Petts, P., Petri, S., Robson, J., Rosenburgh, A., Shields, L., Swift, G. P., & Vaughan, H. (2024). Post-16 students’ experience of practical science during the COVID-19 pandemic and the impact on students’ self-efficacy in practical work. Enhancing Teaching and Learning in Higher Education, 2, 39-69. https://doi.org/10.62512/etlhe.14

This paper presents the findings from a detailed study investigating UK undergraduate students’ experience of practical science in their post-16 studies during the COVID-19 pandemic. It also examines their perceived confidence and preparedness in rel... Read More about Post-16 students’ experience of practical science during the COVID-19 pandemic and the impact on students’ self-efficacy in practical work.

Evaluation of Student Understanding of Uncertainty in Level 1 Undergraduate Physics Laboratories (2021)
Presentation / Conference Contribution
Petts, P. L., Swift, G. P., & Nightingale, S. C. (2021, December). Evaluation of Student Understanding of Uncertainty in Level 1 Undergraduate Physics Laboratories. Presented at 10th International Conference New Perspectives in Science Education

In recent years, work has been undertaken at Durham University to investigate how student understanding of uncertainty in experimental measurements changed throughout the course of the instruction they had during their first year of undergraduate lab... Read More about Evaluation of Student Understanding of Uncertainty in Level 1 Undergraduate Physics Laboratories.

Micro-machined fluidic devices for terahertz time-domain spectroscopy (2011)
Journal Article
Baragwanath, A., Swift, G., DeChang, D., Zeze, D., Gallant, A., & Chamberlain, J. (2011). Micro-machined fluidic devices for terahertz time-domain spectroscopy. Physica status solidi. C, Current topics in solid state physics (Internet), 8(9), 2935-2937. https://doi.org/10.1002/pssc.201084088

Here we present a silicon based, micro-machined fluidic device for terahertz frequencies, fabricated using standard lithographic and micro-machining processes in a cleanroom environment. Designed for use in a conventional transmission terahertz time-... Read More about Micro-machined fluidic devices for terahertz time-domain spectroscopy.

Negative refraction and the spectral filtering of terahertz radiation by a photonic crystal prism (2011)
Journal Article
Swift, G., Gallant, A., Kaliteevskaya, N., Kaliteevski, M., Brand, S., Dai, D., Baragwanath, A., Iorsh, I., Abram, R., & Chamberlain, J. (2011). Negative refraction and the spectral filtering of terahertz radiation by a photonic crystal prism. Optics Letters, 36(9), 1641-1643. https://doi.org/10.1364/ol.36.001641

We demonstrate how micromachined photonic crystals can be used to negatively refract terahertz frequency light. The photonic crystals, which are constructed from conventional dielectric materials, manipulate the incident beam via interaction with the... Read More about Negative refraction and the spectral filtering of terahertz radiation by a photonic crystal prism.

Silicon based microfluidic cell for terahertz frequencies (2010)
Journal Article
Baragwanath, A., Swift, G., Dai, D., Gallant, A., & Chamberlain, J. (2010). Silicon based microfluidic cell for terahertz frequencies. Journal of Applied Physics, 108(1), Article 013102. https://doi.org/10.1063/1.3456175

We present a detailed analysis of the design, fabrication and testing of a silicon based, microfluidic cell, for transmission terahertz time-domain spectroscopy. The sensitivity of the device is tested through a range of experiments involving primary... Read More about Silicon based microfluidic cell for terahertz frequencies.

Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation (2007)
Journal Article
Fletcher, J., Swift, G., Dai, D. C., Levitt, J., & Chamberlain, J. (2007). Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation. Journal of Applied Physics, 101(1), Article 013102. https://doi.org/10.1063/1.2403860

A model describing the propagation of terahertz frequency radiation through inhomogeneous materials is proposed. In such materials (e.g., powders or clothing), the size of the scattering centers, their separation, and the wavelength of the radiation... Read More about Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation.