Highly orientated pyrolytic graphite HOPG

FIG. 18 Scanning force microscopy images, (a) C60 transferred horizontally onto highly oriented pyrolytic graphite (HOPG) at 25 mN m. (b) 1 1 mixed film of C60 and arachidic acid transferred horizontally onto HOPG at 25 mN m. (Reproduced with permission from Ref. 235. Copyright 1996 American Chemical Society.)... 

Fig. 9a,b. The molecular images of the monoclonal IgM on a cleaved highly orientated pyrolytic graphite (HOPG) smdace and schematic representation of the images for IgM. A flat pentagram (a) and a smaller object with higher center (b)... 

In addition to ET-IR, XPS experiments performed on a graphite anode that had been cycled in various carbonate-based electrolytes also identified an alkyl carbonate species. Bar-Tow et al. characterized the surface of a highly oriented pyrolytic graphite (HOPG) that had been cycled in LiAsEe/EC/DEC and found the C Is signal located at 289 eV, which had been... 

An STM probe has been used to isolate individual MS (M = Cd, Pb) particles and to measure electronic phenomena (55,56,81). The MS films were prepared either by exposure of metal ion/fatty acid films to H2S (55,56) or by transfer of a compressed DDAB-complexed CdS monolayer (81). All the films were transferred onto highly oriented pyrolytic graphite (HOPG) for the STM measurements. A junction was created at an individual CdS particle with the STM tip as one electrode and the graphite as the other, and the current/voltage characteristics of the panicles were measured. For the particle prepared in the fatty acid films the I/V curves exhibit step-like features characteristic of monoelectron phenomena. In the case of the DDAB-coated CdS particles the I/V measurements demonstrated n-type semiconductor behavior. The absence of steps in this system is probably a reflection of the larger size of the particles in the DDAB films (8 nm by AFM) compared to the 2-nm particle size typically found for MS particles formed in fatty acid films. 

Fig. 13.17. Highly orientated pyrolytic graphite (HOPG), freshly cleaved (a) AFM (b) UFM, arrow indicates additional contrast 4 mx4 m (Yamanaka et al.

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