Tip cleaning and sharpening processes for noncontact atomic force microscope in ultrahigh vacuum

Tomitori, Masahiko

doi:10.1016/s0169-4332(98)00569-8

Cited by 35 publications

(24 citation statements)

References 11 publications

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“…Cantilever tips were irradiated with UV light for 15 minutes prior to each experiment to remove organic contaminants. 42 Each cantilever was calibrated using its thermal spectrum in situ prior to imaging and the lever sensitivity determined using force spectroscopy. 43 The experiments were completed in a droplet exposed to the atmosphere within the AFM (a sealed enclosure).…”

Section: Methodsmentioning

confidence: 99%

Near surface properties of mixtures of propylammonium nitrate with n-alkanols 1. Nanostructure

Elbourne

Cronshaw

Voïtchovsky

et al. 2015

Phys. Chem. Chem. Phys.

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. * Corresponding author AbstractIn situ amplitude modulated -atomic force microscopy (AM-AFM) has been used to probe the nanostructure of mixtures of propylammonium nitrate (PAN) with n-alkanols near a mica surface. PAN is a protic ionic liquid (IL) which has a bicontinuous sponge-like nanostructure of polar and apolar domains in the bulk, which becomes flatter near a solid surface. Mixtures of PAN with 1-butanol, 1-octanol, and 1-dodecanol at 10 -70 vol% n-alkanol have been examined, along with each pure n-alkanol, to reveal the effect of composition and n-alkanol chain length. At low concentrations the butanol simply swells the PAN nearsurface nanostructure, but at higher concentrations the nanostructure fragments. Octanol and dodecanol first lower the preferred curvature of the PAN near-surface nanostructure because, unlike n-butanol, their alkyl chains are too long to be accommodated alongside the PAN cations. At higher concentrations, octanol and dodecanol self-assemble into n-alkanol rich aggregates in a PAN rich matrix. The concentration at which aggregation first becomes apparent decreases with n-alkanol chain length.2

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Section: Methodsmentioning

confidence: 99%

Near surface properties of mixtures of propylammonium nitrate with n-alkanols 1. Nanostructure

Elbourne

Cronshaw

Voïtchovsky

et al. 2015

Phys. Chem. Chem. Phys.

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“…This can be accomplished by exposure to an oxygen plasma, or by UV-radiation in an oxygen-rich atmosphere. UV-radiation in oxygen also removes carbon contaminants [143]. The resulting surface will be terminated with a high density of silanol groups.…”

Section: Modificationmentioning

confidence: 99%

Force measurements with the atomic force microscope: Technique, interpretation and applications

Butt

Cappella

Kappl

2005

Surface Science Reports

3,246

2,949

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“…19,20 However, a full quantitative understanding of contrast formation in imaging and atomic precision force controlled manipulation and assembly requires the preparation of force microscopy tips with well defined shape and functionality and great efforts have been made to produce such tips. [21][22][23][24] At present, however, direct evidence and analytical methods for determining the species at the end of the probing tip are generally missing and the accumulation of indirect evidence and trial of controlling the tip apex at the atomic level are significant challenges to understanding NC-AFM imaging…”

mentioning

confidence: 99%

Atomic resolution force microscopy imaging on a strongly ionic surface with differently functionalized tips

Arai

Gritschneder

Tröger

et al. 2010

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Three types of tips for noncontact atomic force microscopy imaging, namely, a silicon nanopillar tip, a carbon nanopillar tip, and a fluoride cluster tip, are prepared for atomic resolution imaging on the CaF2(111) surface. The most enhanced atomic corrugation is obtained with the fluoride cluster tip prepared by gently touching the fluorite surface. Atom resolved images are much harder to obtain with the other tips. This demonstrates the importance of having a polar tip for atomic resolution imaging of an ionic surface and supports the general notion that a surface is best imaged with a tip of the same material.

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Tip cleaning and sharpening processes for noncontact atomic force microscope in ultrahigh vacuum

Cited by 35 publications

References 11 publications

Near surface properties of mixtures of propylammonium nitrate with n-alkanols 1. Nanostructure

Near surface properties of mixtures of propylammonium nitrate with n-alkanols 1. Nanostructure

Force measurements with the atomic force microscope: Technique, interpretation and applications

Atomic resolution force microscopy imaging on a strongly ionic surface with differently functionalized tips

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