Browsing by Author "Johnston, Michael"

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Browsing by Author "Johnston, Michael"

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  • Johnston, Michael; Dowd, Annette; Driver, Robert; Linfield, Edmund; Davies, A.; Whittaker, David (IOP Publishing, 2004)
    It is shown experimentally that surface-field terahertz (THz) emitters can produce well-collimated beams of THz radiation, making them useful devices for time-domain spectroscopy applications. Simulations of the carrier-dynamics ...
  • Johnston, Michael; Whittaker, David; Dowd, Annette; Davies, A.; Linfield, Edmund; Li, X; Ritchie, D (Optical Society of America, 2002)
    A compact, high-power emitter of half-cycle terahertz (THz) radiation is demonstrated. The device consists of an epitaxial InAs emitter upon a GaAs prism and produces THz pulses that are 20 times more powerful than those ...
  • Johnston, Michael; Geoffroy, Mc; Sobala, A; Hay, R; Hutvagner, Gyorgy (Amer Soc Cell Biology, 2010)
    Key components of the miRNA-mediated gene regulation pathway are localized in cytoplasmic processing bodies (P-bodies). Mounting evidence suggests that the presence of microscopic P-bodies are not always required for ...
  • Johnston, Michael; Corchia, A; Dowd, Annette; Linfield, Edmund; Davies, A.; Mclaughlin, Robert; Arnone, Don; Pepper, Michael (Elsevier, 2002)
    We discuss the origins of the magnetic-field-induced enhancement of terahertz (THz) emission from bulk semiconductor surfaces. The principal effect of the magnetic field is to rotate the THz dipole and hence dramatically ...