Scanning tunneling microscopy and spectroscopy with fullerene coated tips

Resh, J.; Sarkar, Dipankar; Kulik, J.; Brueck, J.; Ignatiev, A.; Halas, Naomi J.

doi:10.1016/0039-6028(94)91123-1

Cited by 27 publications

(18 citation statements)

References 20 publications

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“…The I -V curve in ͑c͒ also reproduces the main features of the STS of a C 60 -adsorbed Pt-Rh tip on graphite surface. 15 This further confirms the adsorption of a C 60 molecule on the tip.…”

supporting

confidence: 78%

Negative differential-resistance device involving two C60 molecules

Zeng¹,

Wang²,

Wang³

et al. 2000

Applied Physics Letters

142

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Negative differential-resistance (NDR) molecular device is realized involving two C60 molecules, one is adsorbed on the tip of a scanning tunneling microscope and the other is on the surface of the hexanethiol self-assembled monolayer. The narrow local density of states features near the Fermi energy of the C60 molecules lead to the obvious NDR effect. Such controllable tunneling structure and the associated known electronic states ensure the stability and reproducibility of the NDR device.

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supporting

confidence: 78%

Negative differential-resistance device involving two C60 molecules

Zeng¹,

Wang²,

Wang³

et al. 2000

Applied Physics Letters

142

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“…12 Inverse images of the fullerene coated tips were generated by scanning these tips over the ion damaged graphite sample. In this instrument, a spring suspension, a stacked plate-elastomer system, and eddy current damping were used for vibration isolation.…”

Section: Methodsmentioning

confidence: 99%

“…7 Imaging by inverse AFM employs an array of sharp structures on a flat surface. 12 Because this experiment was done under ambient conditions, there are many possible explanations for the improved atomic resolution. Recently, two groups have successfully imaged different AFM tips using specially prepared tip arrays.…”

Section: Introductionmentioning

confidence: 99%

Direct observation of fullerene-adsorbed tips by scanning tunneling microscopy

Kelly¹

1996

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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High-temperature scanning tunneling microscopy study of the Li/Si(111) surface J.We have succeeded in imaging individual C 60 molecules that have been adsorbed onto the tunneling region of a scanning tunneling microscopy tip. The individual tip-adsorbed molecules are imaged by scanning the fullerene-adsorbed tip over a defect covered graphite surface. The defects are generated by low energy argon ion bombardment and protrude from the graphite surface. These nanometer-size defects serve as a surface tip array which inverse images the molecules adsorbed to the tip when the surface is scanned.

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“…The surfaces were then imaged under ambient conditions with a home-built STM controlled by RHK Technology (Troy, MI) electronics and software. Scanning was performed with both bare, mechanically cut Pt͞Rh (87͞13) tips and the same tips functionalized with C 60 molecules as described (19). All graphite samples were scanned before the fluorination procedure to compare the density and structure of naturally occurring defects with those generated from the formation of C-F bonds.…”

Section: Methodsmentioning

confidence: 99%

Nanoscale imaging of chemical interactions: Fluorine on graphite

Kelly

Mickelson²,

Hauge³

et al. 2000

Proc. Natl. Acad. Sci. U.S.A.

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Using C60-functionalized scanning tunneling microscope tips, we have investigated the adsorption of fluorine on graphite. Based on characteristics of the accompanying electron standing waves, we are able to distinguish the fluorine adatoms that have bonded ionically to the graphite surface from those that have formed covalent bonds with the surface. This result permits determination of the ratio of ionic to covalent C-F bonds on graphite obtained by gas phase fluorination, which seems to be temperatureindependent between 200 and 300°C under the reaction conditions used.

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Scanning tunneling microscopy and spectroscopy with fullerene coated tips

Cited by 27 publications

References 20 publications

Negative differential-resistance device involving two C60 molecules

Negative differential-resistance device involving two C60 molecules

Direct observation of fullerene-adsorbed tips by scanning tunneling microscopy

Nanoscale imaging of chemical interactions: Fluorine on graphite

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