NanoArt21 Exhibitions

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Home > NanoArt 2012 Exhibition > Bjorn Hoffmann, Germany, 2012
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Nano-Maze 72dpi 800px.jpg
Nano-Maze-256 viewsA single crystalline and 50nm thin gold nanoplatelet was etched with a focused gallium ion beam in a Tescan Lyra 3 FIB/SEM system. The pattern is a so called Hilbert curve, a space filling fractal that can be used as an optical nanoantenna. The image was taken at 25kV acceleration voltage with the secondary electron detector at a sample tilt of 55°. The coloring of the image was done with the program “gwyddion”, where the “sky” color palette was used.
Rainbows in the Nano Cosmos 72dpi_800px.jpg
Rainbows in the Nano Cosmos-279 viewsThis image was taken with the forescatter electron diodes of a Bruker EBSD detector inside a Tescan Lyra 3 FIB/SEM. Normally, these diodes detect differences in Kikuchi patterns from crystalline material to determine different crystal orientations. In this case the sample consists of silicon nanopillars with a diameter of 600nm. Depending on the position of the electron beam behind a pillar, one or two of the three RGB-coded diodes is shaded and the resulting signal becomes so colorful. This image was not altered by software afterwards.
Smallest Mona Lisa in the world 72dpi 800px.jpg
Smallest Mona Lisa in the world-344 viewsA single crystalline and 50nm thin gold nanoplatelet was etched with a focused gallium ion beam in a Tescan Lyra 3 FIB/SEM system. For the patterning a greyscale image of the Mona Lisa was used which grey value coded the etching depth. It is etched only 20nm deep into the crystal. The image was taken at 5kV acceleration voltage with the secondary electron detector. The coloring of the image was done with the program “gwyddion”, where the “sky” color palette was used. The Mona Lisa has only a size of 2 x 3 µm˛, which makes it most likely the smallest Mona Lisa in the world!
 
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