Harrison's Grooves

Strange Grooves

Scattering from Loaded Grooves

Electromagnetic scattering from a two-dimensional groove recessed in an arbitrarily thick conducting screen is studied. The groove may be empty or loaded with a lossy material which may or may not completely fill the cavity. For the partially loaded groove, the filling material is assumed electrically dense so that the standard impedance boundary condition is applicable at the top surface of th...

Top edge facet development in asymmetric grooves

The low pressure (20 mbar) organometallic vapour phase epitaxy (LP-OMVPE) of GaAs/GalnP in asymmetric grooves, patterned on (111)B GaAs substrates, has been examined. One of the characteristic features of this deposition is that facets develop along the top edges where the side wall planes meet the top surface. The origin of small facets at the top edge appears to be due to pre-growth condition...

Real Time Scratches and Grooves

We present a GPU-accelerated algorithm to render surface detail features like scratches and grooves in real time. Our method efficiently models these features using a continuous representation that is stored in two textures. The first texture plays the role of a hash and provides pointers to the second texture containing the scratches paths, profiles and material information. This data is evalu...

Character and origin of Phobos’ grooves

Phobos’ parallel grooves, which are such a striking feature of its surface, have attracted interest since their discovery on Viking images in 1976 (Veverka and Duxbury, 1977. J. Geophys. Res. 82, 4213–4223.), but their origin is still in dispute today. The great increase in knowledge of Phobos’ surface features effected by images from the High Resolution Stereo Camera (HRSC) onboard the E.S.A. ...