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425 results
  • High-Temperature Polaritons in Ceramic Nanotube Antennas. [Journal Article]
    Nano Lett 2019Starko-Bowes R, Wang X, … Jacob Z
  • High-temperature thermal photonics presents unique challenges for engineers as the database of materials that can withstand extreme environments are limited. In particular, ceramics with high temperature stability that can support coupled light-matter excitations, that is, polaritons, open new avenues for engineering radiative heat transfer. Hexagonal boron nitride (hBN) is an emerging ceramic 2D…
  • Laser-slicing at a low-emittance storage ring. [Journal Article]
    J Synchrotron Radiat 2019; 26(Pt 5):1523-1538Di Mitri S, Barletta W, … Masciovecchio C
  • Laser-slicing at a diffraction-limited storage ring light source in the soft X-ray region is investigated with theoretical and numerical modelling. It turns out that the slicing efficiency is favoured by the ultra-low beam emittance, and that slicing can be implemented without interference to the standard multi-bunch operation. Spatial and spectral separation of the sub-picosecond radiation pulse…
  • Optical Tunneling Mediated Sub-Skin-Depth High Emissivity Tungsten Radiators. [Journal Article]
    Nano Lett 2019; 19(10):7093-7099Cho JW, Lee KJ, … Kim SK
  • Tailoring the spectrum of thermal radiation at high temperatures is a central issue in the study of thermal radiation harnessed energy resources. Although bulk metals with periodic cavities incorporated into their surfaces provide high emissivity, they require a complicated micron metal etch, thereby precluding reliable, continuous operation. Here, we report thermally stable, highly emissive, ult…
  • VO2-based switchable radiator for spacecraft thermal control. [Journal Article]
    Sci Rep 2019; 9(1):11329Kim H, Cheung K, … Charipar NA
  • Direct calorimetric measurements of a solid state passive switchable radiator for spacecraft thermal control have been performed in a simulated space environment. Dynamic emissivity control is provided by the thermochromic phase change in a multilayer VO2 thin film based resonant absorber. The measured radiated power difference between 300 K and 373 K was 480 W/m2 corresponding to a 7× difference…
  • First Cerenkov charge-induction (CCI) TlBr detector for TOF-PET and proton range verification. [Journal Article]
    Phys Med Biol 2019; 64(17):175001Ariño-Estrada G, Mitchell GS, … Cherry SR
  • Thallium bromide (TlBr) is a semiconductor material and, simultaneously, a good Cerenkov radiator. The performance of a TlBr detector that integrates two different readouts, the charge induction readout and the detection of Cerenkov light, was evaluated. A TlBr detector with dimensions of 4 × 4 × 5 mm3, with a monolithic cathode and an anode segmented into strips, was manufactured. One of the bar…
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