AFM Images from the VEECO/Digital Instruments Site

Hard disc

Magnetic force image

SiN/Si features

Polymer blend

DNA

Hard disk

TappingModeTM AFM image of disc surface

MFM image

Magnetic bits written with an MFM probe on perpendicular Co-Cr media with a NiFe sublayer. The bits are about 180nm in size spaced 370nm, giving an equivalent area density of ~5 Gbits/in2. 2.3µm scan courtesy Michael Azarian, Censtor Corporation

  SiN/Si features

A pattern of 80nm tall elevated features in a Si/SiN substrate produced by ion irradiation through a stencil mask. The ion dose was 1016/cm2 and the energy was 1 MeV. The features are 1 micrometer in diameter and 1 micrometer apart. 10µm scan courtesy L. Folks, Almaden Researh Center, USA

Polymer blend

 

 

 

TappingMode AFM image of poly(styrene) and poly(methyl methacrylate) blend polymer film. The film was spin-cast on mica substrate from chloroform solution. The surface structure is resulted from the spinodal decomposition. The islands consist of a PMMS-rich phase while the surface matrix composes of a PS-rich phase. 3µm scan courtesy C. Ton-That, Robert Gordon University, U.K.

 DNA 

 

TappingMode image of nucleosomal DNA was the highlight of the "Practical Course on Atomic Force Microscopy in Biology," held at the Biozentrum in Basel, Switzerland, July 1998. Image courtesy of Y. Lyubchenko.

Reconstituted nucleosome cores were loaded onto plasmid DNA sequences (courtesy of Prof. Lohr). The nucleosome is 11 nm x 5.5 nm and contains a protein core about which is wrapped 1.75 turns of DNA. The horizontal streaks in the image are due to incorrect "flattening" of the image during processing