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Bruker Fuels the Future of Graphene

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Tracy Krainer Posted: Thu, Apr 4 2013 3:58 PM

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Innovation with Integrity

Bruker Fuels the Future of Graphene

April 2013

AFM topography image showing wrinkles in graphene layers at area of interest.

This modulus image shows fine structures with greater compliance seen as darker areas on the modulus map image.

Atomic force microscopy has been part of graphene researchsince Andre Geim and Konstantin Novoselov's discovery started the field. The early TappingMode™ images, acquired with a Bruker MultiMode® at locations pinpointed by an optical survey, unambiguously identified the single graphene layers that had previously been thought to be inaccessible.

The years following this discovery have seen a veritable explosion of graphene research activity with over 100 publications so far using Bruker AFMs. Those studies include investigations into the fabrication of graphene and graphene oxide. They also address the wide ranging applications envisioned for graphene from flexible displays and fast electronics to actuators, biosensors, and composites.

Advanced property measurements have played a key role in these exciting advances, including studies utilizing Bruker's exclusive PeakForceQNM® for unraveling graphene layering and quantifying the graphene metal interactions controlling the electrode bonding in electrical device applications. Other groundbreaking research includes nanoscale conductivity investigations on composites and functionalized graphene and KPFM investigations clarifying the charge percolation pathway in graphene-based organic hybrid FET devices.

Raman spectroscopy allows for fast mapping of graphene layer structure through G-band intensity.

Even more exciting advances enabled by the latest Bruker technology may be yet to come. For example, PeakForce KPFM™ may permit extending hybrid device investigations to higher spatial resolution with more quantitative measurements and correlation with local material variations. In addition, future conductivity studies may benefit from the proven ability ofPeakForce TUNA™ to provide the highest spatial resolution on the most mechanically fragile samples.

Filed under: AFM, graphene, PeakForce KPFM, PeakForce QNM, Multimode
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Bruker Fuels the Future of Graphene

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