FIB created self-oriented ripples


  • Contact Researcher: Franck ROSE, Dr. - Pascal MARTIN, Dr.
  • Hosted LIMMS Japanese Laboratory: Kawakatsu Lab --- Micro Components and Systems

Project Overview

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Carbon nanostructures can be grown with electron and ion beam methods, and particularly with the focused ion beam (FIB). FIB is not only a post processing tool for microelectronics fabrication, but also an instrument used to grow, synthesize, self-assemble, and tailor new nanoscale structures such as ripples, quantum dots, hollow bulk nanofins, nanometric holes, nanopores, nanocones and nanodroplets. Especially, new graphite based micro- and nano- structures can be created by FIB. For instance, arrays of Au and CoPt nanoclusters and nanodots were assembled onto nanoholes patterned by FIB on HOPG. Mesoscopic devices of graphite microdisks with 50 nm wide constrictions between the electrodes could also be realized with a FIB micropatterning technique. Self-oriented pseudo-periodical ripples can be created on HOPG by Ar+ and Xe+ sputtering and employed as templates for nanotubes alignment and deformation. Recently we showed that ripples could also be formed by FIB on HOPG and used as templates for the adsorption of DNA balls. We also reported that HOPG nanosheets can be processed by FIB into HOPG/Si grip heterostructures in order to selectively adsorb DNA and suspend DNA bundles for nanomechanical measurements.

Report(s) and Publication(s)

  • References :
P. Martin, F. Rose, F. Morin, H. Fujita and H. Kawakatsu, "FIB - created HOPG/SiO2 heterostructures for adsorbed and suspended DNA", IEEE Technical Digest of International Conference on Microtechnologies in Medicine and Biology (MMB2006), p.173, 2006.