High-Resolution AFM Imaging — Any Time, Every Time

Pinpoint force to any atom on your sample.

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Stay close, but not too close.

Resolution depends greatly on tip-sample distance. There is a sweet spot where resolution is maximized, nearly independent of tip radius.

Operate at the sweet spot.

Conventional tapping approaches integrate background forces over the entire cycle (dark blue), rather than the ideal range (red).

Only PeakForce Tapping® controls force directly, at the pN level. Allowing you to control feedback at the precise location where resolution is maximized.

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Dimension FastScan Calcite height and stiffness

Point defect resolution height and stiffness maps of calcite in water. 15 nm image size.

Point-defect resolution, even in nanomechanics.

What is the stiffness of individual atoms?

With direct force control, PeakForce Tapping provides a direct path to answering this question. Only force curves can enable maximum resolution accross both topography and nanomechanical properties.

Point-defect resolution, and not just on hard crystals.

From point defects in molecular crystals to submolecular ordering in ordered polymer films, PeakForce Tapping opens new windows into highest resolution.

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(Left) Submolecular structure in an ordered iPMMA film. 100 nm image. Image courtesy of Samuel Lesko, Bruker Nano Surfaces. Sample courtesy of Prof. Dr. Thurn-Albrecht, Martin-Luther-Universität Halle-Wittenberg. (Right) Trimeric substructure and defects in the 2D crystal formed by bacteriohodopsin. PeakForce Tapping image. S. Hu, (Bruker) with I. Medalsy, D. Mueller (ETH D-BSSE, Basel, Switzerland).

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Adapted from Pyne el al., Small 10(16), 3257 (2014) LINK

Routinely achieve DNA minor groove resolution.

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Resolve the double helix structure of DNA completely, including its minor groove.

Resolve it routinely, repeatedly, under physiological conditions.

Resolve it so well, you can start to see variations beyond the average periodicity known from crystallography.

Jumpstart your perovskite, graphene, and 2D materials research.

What happens to graphene as you suspend it across a hole in the substrate?

PeakForce Tapping not only answers this question but also maps out the compliance on the unsupported region.

TappingMode, in contrast, causes the graphene membrane to oscillate, preventing its interrogation.

Images of suspended graphene membrane acquired in Tapping Mode (grey image, height) and PeakForce Tapping (blue image, adhesion overlaid on height). Image sizes 9 microns. For more details see Clark, N. et al. "Ultrafast quantitative nanomechanical mapping of suspended graphene." Physica Status Solidi (B), 2013, doi:10.1002/pssb.201300137. LINK

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While conductive AFM (a,b) shows the moire pattern, only PeakForce QNM (c-g) shows the transition to a commensurate pattern with sharp domain walls.


Jumpstart your perovskite, graphene, and 2D materials research.

What happens to graphene as you stack it on top of boron nitride?

By detecting angstrom-level deformations at pN forces, the stress-strain in a graphene layer as it interacts with boron nitride can be probed.

The resulting data shows that graphene can adopt a commensurate state where areas of matching lattice constants are separated by domain walls that accumulate the generated strain within 2 nm.

Only PeakForce QNM provides the sensitivity and resolution to reveal this transition.

Reprinted by permission from Macmillan Publishers Ltd: Nature Physics 10, 451, 2014, doi:10.1038/nphys2954. Copyright 2014. LINK