activity
20202026
most citedSpace-squeezing optics in the microwave spectral region

23 citations · 37 across the 5 of their papers we have counts for

collaborators

5 papers

physics.optics2026

A microwave super-resolution imaging approach towards breast cancer margin mapping

Harry Penketh, Sonal Saxena, Michal Mrnka +10

Accurate characterisation of margins in excised breast cancer tumours is critical to the success of surgical interventions. Yet margin status is typically confirmed post-operativel…

physics.app-ph2024★ 5 cited

Shrinking a gradient index lens antenna system with a spaceplate

Michal Mrnka, Thomas Whittaker, David B. Phillips +2

The miniaturisation of optical systems is an ongoing challenge across the electromagnetic spectrum. While the thickness of optical elements themselves can be reduced using advances…

physics.optics2023★ 9 cited

Terahertz imaging through emissivity control

Michal Mrnka, Harry Penketh, Ian R. Hooper +5

Adoption of terahertz technologies is hindered by the lack of cost-effective THz sources. Here we demonstrate a fundamentally new way to generate and control THz radiation, via spa…

physics.optics2021★ 23 cited

Space-squeezing optics in the microwave spectral region

Michal Mrnka, Euan Hendry, Jaroslav Láčík +4

Optical systems often consist largely of empty space, as diffraction effects that occur through free-space propagation can be crucial to their function. Contracting these voids off…

physics.app-ph2020

Total internal reflection based super-resolution imaging for sub-IR frequencies

Lauren E. Barr, Peter Karlsen, Samuel M. Hornett +5

For measurements designed to accurately determine layer thickness, there is a natural trade-off between sensitivity to optical thickness and lateral resolution due to the angular r…