Physics and Astronomy
Recent Submissions
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On the optimal position of an emitter in a wavelength-scale parabolic reflector (dataset)
(University of Exeter, 18 September 2019)We investigate the optimum emitter position within reflecting parabolic antennas whose size is comparable to the emission wavelength. Using finite-element modelling we calculate the dependence of the amount of power directed ... -
Pushing the limits of the reaction-coordinate mapping
(AIP Publishing, 6 September 2019)The reaction-coordinate mapping is a useful technique to study complex quantum dissipative dynamics into structured environments. In essence, it aims to mimic the original problem by means of an 'augmented system', which ... -
A plasmonic route towards the energy scaling of on-chip integrated all-photonic phase-change memories
(E\PCOS, 11 September 2019)Phase-change photonic memory devices, conventionally implemented as a thin layer of phase-change material deposited on the top of an integrated Si or SiN waveguide, have the flexibility to be applied in a widely diverse ... -
Liquid–liquid phase separation morphologies in ultra-white beetle scales and a synthetic equivalent
(Nature Research, 29 August 2019)Cyphochilus beetle scales are amongst the brightest structural whites in nature, being highly opacifying whilst extremely thin. However, the formation mechanism for the voided intra-scale structure is unknown. Here we ... -
Nonlinear optical spectroscopy and two-photon excited fluorescence spectroscopy reveal the excited states of fluorophores embedded in a beetle's elytra
(The Royal Society, 6 February 2019)Upon illumination by ultraviolet light, many animal species emit light through fluorescence processes arising from fluorophores embedded within their biological tissues. Fluorescence studies in living organisms are however ...