On Tue, 2 Aug 2011 08:49:47 -0400, "J. Steele Parris" <parri...@vcu.edu> wrote: > The tip is a 1x1x4 nickel block that has been cut to a pyramid point on one > side and affixed to a nickel layer (1 unit thick) and a silicon substrate. > There is also a thin layer of silver on the pyramid point of the tip. >
Ok, so - if you haven't tried that already - I would try and see what happens if the tip is not cut to a point, but to a wide end-tip (blunted, so to say). Actually (still admitting hat you haven't yet done that), I would first of all try and see what happens with a sphere, that should clarify whether the problem is due to the complex geometry of the tip or to something else. I know that this isn't terribly helpful, but this is how I would proceed if I had the same problem. Giovanni ---------------------------------------- Message sent by Cup Webmail (Roundcube) _______________________________________________ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
