23 citations · 64 across the 7 of their papers we have counts for
7 papers
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…
Reconfigurable Elastic Metamaterials: Engineering Dispersion with Meccano
G. J. Chaplain, I. R. Hooper, A. P. Hibbins +1
We design, simulate and experimentally characterise a reconfigurable elastic metamaterial with beyond-nearest-neighbour (BNN) coupling. The structure is composed from the popular B…
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…
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…
Absence of Anderson localization in certain random lattices
Wonjun Choi, Cheng Yin, Ian R. Hooper +2
We report on the transition between an Anderson localized regime and a conductive regime in a 1D scattering system with correlated disorder. We show experimentally that when long-r…
Topological Modes in One Dimensional Solids and Photonic Crystals
Timothy J. Atherton, Celia A. M. Butler, Melita C. Taylor +4
It is shown theoretically that a one-dimensional crystal with time reversal symmetry is characterized by a Z_{2} topological invariant that predicts the existence or otherwise of e…
Transmutation of singularities and zeros in graded index optical instruments: a methodology for designing practical devices
I. R. Hooper, T. G. Philbin
We describe a design methodology for modifying the refractive index profile of graded-index optical instruments that incorporate singularities or zeros in their refractive index. T…