Two different types of the molecular arrangement of trimesic acid deposited on HOPG are clearly seen: linear lamellae and hexagonal packing. The true molecular resolution in ambient conditions has been practically achieved.
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The lamellar structure of Azelaic acid deposited on HOPG was investigated by successive zooming starting from 200nm scanning area down to 25nm. All the images were measured with the closed loop on.
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14.5×14.5 nm topography scan of the lamellar stripes of C18H38 linear alkane. The width of the lamellae is about 2nm.
Z range – 0.6 Å.
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100×100nm Topography scan of C28H58 lamellae on HOPG. Z range is 1.3Å.