Helping Solve Processing and Materials  Problems using Scanning Probe Microscopy since 1990.

CD stamper bumps, perspective view


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: Applications of AFM and STM
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     : Collagen fibers
     : Collagen monomers
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: Electronic Materials
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: Metals

:Gallery of interesting images



Image Gallery

STM image of graphite surface Graphene (Twisted Graphite).  STM images of HOPG (highly ordered pyrolytic graphite) captured by Virgil Elings of Digital Instruments in 1987 using a NanoScope I STM in air.  The long-wavelength periodic structures shown here are attributed to Moire patterns in the surface electron density, induced by a slight twist between the topmost and lower layers in the crystal.  Our interpretation in 2013 is that these are the first STM images of Graphene, in situ on bulk HOPG (The linked document is a scan of STM application flyer #3. Copyright 1987 Digital Instruments, used by permission.)

Overlap of periodic or quasi-periodic patterns creates a moire pattern.

Polymer coating on the interior of aluminum beverage can showing heterogeneous material domains Polymer coating on the interior surface of an aluminum beverage can.  This prevents acids in the beverage from reacting with the metal.  The phase image shows that the coating is not homogeneous but has distinct material domains.

This image was chosen by Digital Instruments (now Bruker Nano) for use in their annual calendar.

AFM image of Collagen moleules on a mica substrate. Collagen Monomer molecules.  Large molecules such as the protein Collagen can routinely be viewed in the Atomic Force Microscope.
AFM image of DNA plasmid on Mica substrate DNA Plasmid.  Microbiologists studying DNA find useful information in the size and structure of plasmids such as the one shown.


More images are coming soon.


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