I'm pretty sure you'd have to excite your structure with an Hz source to see a surface effect.
Milan From: Cícero Julião [mailto:[email protected]] Sent: maandag 6 december 2010 15:00 To: Marell, M.J.H. Subject: Re: [Meep-discuss] Using silver Yes, 'convert ez-*.png efield.gif'. The problem is this: the wave 'is going touch' the metal. So, I'd think there is a surface effect. And, I can't see this in the gif. What do you think about this? 2010/12/6 Marell, M.J.H. <[email protected]<mailto:[email protected]>> Did you check the individual PNG files? If they are OK, I wouldn't worry too much. And what did you use to convert the PNG files to GIF? 'convert ez-*.png efield.gif' From: Cícero Julião [mailto:[email protected]<mailto:[email protected]>] Sent: maandag 6 december 2010 14:43 To: Marell, M.J.H. Subject: Re: [Meep-discuss] Using silver Strange... in my gif, we can see some 'shots' after the cylinder. But in your gif, there isn't shots. I don't know why.. 2010/12/6 Marell, M.J.H. <[email protected]<mailto:[email protected]>> I don't see what's wrong with this... I have included the animated GIF. From: Cícero Julião [mailto:[email protected]<mailto:[email protected]>] Sent: maandag 6 december 2010 13:01 To: Marell, M.J.H. Subject: Re: [Meep-discuss] Using silver I'm using meep in Ubuntu 10.10, and meep is 1.1.1 version. This field left of the cylinder... is it corret? 2010/12/6 Marell, M.J.H. <[email protected]<mailto:[email protected]>> I can't reproduce the effect, I only see a field left of the cylinder. Can you post a screenshot or the animated GIF? What version of MEEP are you using? Milan From: [email protected]<mailto:[email protected]> [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Cícero Julião Sent: maandag 6 december 2010 2:19 To: [email protected]<mailto:[email protected]> Subject: [Meep-discuss] Using silver Hello, dear colleagues. I'm trying use metal in meep simulate. Below, I put the code with a silver cylinder. But the animation shows a strange effect: we see field inside the cylinder and, some times, 'shots' after the cylinder. Is this correct? ; -------->>>>>> THE CODE (define-param dpml 1) (set! geometry-lattice (make lattice (size 16 12 no-size))) ; Ag material (define a 100e-9) ; define the unit, 100 nm (define cc (/ (* 2 (* pi 3e+8)) a)) ; unit of frequency in meep (define wp_ag (/ 1.3798e16 cc)) (define gamma_ag (/ 2.72293e13 cc)) (define Ag (make dielectric (epsilon 3.7) (polarizations (make polarizability (omega 1e-20) (gamma gamma_ag) (sigma (* wp_ag wp_ag 1e40)))))) (set! geometry (list (make block (center 0 0) (size infinity 8 infinity) (material air) ) (make cylinder (center 0 0 ) (radius 3) (height infinity) (material Ag) ) ) ) (set! sources (list (make source (src (make continuous-src (wavelength 6.5) (width 6) )) (component Ez) (center -7 0) ) ) ) (set! pml-layers (list (make pml (thickness 1.0)))) (set! resolution 20) (use-output-directory) (run-until 100 (at-beginning output-epsilon) (at-every 0.6 (output-png Ez "-Zc bluered" ) ) ) ____________________________________ Cícero Julião da Silva Junior ____________________________________ Optics and Materials Group - Optma Institute of Physics - UFAL www.optma.org<http://www.optma.org/> Fone (phone): (country code +55) sala (office): (82) 3214 1424 ramal (extension) 201 lab: (82) 3214 1424 ramal (extension) 401 -- ____________________________________ Cícero Julião da Silva Junior ____________________________________ Optics and Materials Group - Optma Institute of Physics - UFAL www.optma.org<http://www.optma.org/> Fone (phone): (country code +55) sala (office): (82) 3214 1424 ramal (extension) 201 lab: (82) 3214 1424 ramal (extension) 401 -- ____________________________________ Cícero Julião da Silva Junior ____________________________________ Optics and Materials Group - Optma Institute of Physics - UFAL www.optma.org<http://www.optma.org/> Fone (phone): (country code +55) sala (office): (82) 3214 1424 ramal (extension) 201 lab: (82) 3214 1424 ramal (extension) 401 -- ____________________________________ Cícero Julião da Silva Junior ____________________________________ Optics and Materials Group - Optma Institute of Physics - UFAL www.optma.org<http://www.optma.org> Fone (phone): (country code +55) sala (office): (82) 3214 1424 ramal (extension) 201 lab: (82) 3214 1424 ramal (extension) 401
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