Surface Analysis by Scanning Tunneling Microscopy

Coury, Louis A.; Johnson, Mario; Murphy, Tammy J.

doi:10.1021/ed072p1088

Cited by 10 publications

(8 citation statements)

References 2 publications

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“…The introduction of SPM to students at this level derives from the relative ease of use of the instrumentation and the quick visual images obtained during the experiments. Several papers in this Journal have demonstrated the types of laboratory experiments that can be conducted using these microscopes (1,2). Generally, these experiments emphasize collection of bare surface topographies and recognition of morphological surface changes due to reaction.…”

mentioning

confidence: 99%

Molecular Photography in the Undergraduate Laboratory: Identification of Functional Groups Using Scanning Tunneling Microscopy

et al. 2000

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confidence: 99%

Molecular Photography in the Undergraduate Laboratory: Identification of Functional Groups Using Scanning Tunneling Microscopy

et al. 2000

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“…4,5 A basic example would be to illustrate force—displacement profiles and calculations to demonstrate molecular bond rupture events by developing experiments using AFM probes with molecular coatings. 6,7 Other lab exercises could illustrate the imaging capabilities of AFM or scanning tunneling microscopy (STM), 8 particularly for resolving atomic or molecular lattices. 9 –14 Educational lab exercises with SPM have been reported for imaging surface changes caused by chemical reactions, 15 –18 nanopatterning, 5,19 and studies with biomolecules.…”

Section: Introductionmentioning

confidence: 99%

Automated Scanning Probe Lithography with n-Alkanethiol Self-Assembled Monolayers on Au(111): Application for Teaching Undergraduate Laboratories

Brown

LeJeune

Liu

et al. 2011

JALA: Journal of the Association for Laboratory Automation

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Controllers for scanning probe instruments can be programmed for automated lithography to generate desired surface arrangements of nanopatterns of organic thin films, such as n-alkanethiol self-assembled monolayers (SAMs). In this report, atomic force microscopy (AFM) methods of lithography known as nanoshaving and nanografting are used to write nanopatterns within organic thin films. Commercial instruments provide software to control the length, direction, speed, and applied force of the scanning motion of the tip. For nanoshaving, higher forces are applied to an AFM tip to selectively remove regions of the matrix monolayer, exposing bare areas of the gold substrate. Nanografting is accomplished by force-induced displacement of molecules of a matrix SAM, followed immediately by the surface self-assembly of n-alkanethiol molecules from solution. Advancements in AFM automation enable rapid protocols for nanolithography, which can be accomplished within the tight time restraints of undergraduate laboratories. Example experiments with scanning probe lithography (SPL) will be described in this report that were accomplished by undergraduate students during laboratory course activities and research internships in the chemistry department of Louisiana State University. Students were introduced to principles of surface analysis and gained “hands-on” experience with nanoscale chemistry.

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“…This sensitivity provides ISTM with its high resolution power (2)(3)(4). Readers interested in learning more about the tunneling of electrons should consult other references (5)(6)(7)(8).…”

Section: Introductionmentioning

confidence: 99%

Getting Close with the Instructional Scanning Tunneling Microscope

Rapp

1997

J. Chem. Educ.

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Scanning Tunneling Electron Microscopy (STEM) is a powerful technique that provides magnification of conducting surfaces to the atomic level. My recent experience as a member of a group of twenty teachers selected to work for eight summer weeks with scientists at Xerox Corporation and professors at the University of Rochester has opened new vistas for me and my high school students. We learned to use the Burleigh Instructional Scanning Tunneling Microscope (ISTM), an instrument designed for educational use by the University of Rochester, Xerox Corporation, and Burleigh Instrument Inc. While the images we can produce are not of the same quality as are often seen in the research literature, care in making a sharp, uncontaminated scanning tip and data collection in a vibration-free area, can result in pictures that are more than adequate for the introduction of "atomic eyes" to my classroom. The ISTM is useful in the study of the effect of acids and bases on metals and the surfaces of semiconductors (some experiments are described below). Cutting the platinum-iridium tip or preparing the tungsten tip and mounting the sample are hands-on activities that give students a glimpse of the technological nanoworld. This state-of-the-art instrumentation is making it possible for students to actually view atoms in their own classroom. What is truly amazing, however, is that the ISTM can be set up and atomic resolution images obtained in about an hour.

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Surface Analysis by Scanning Tunneling Microscopy

Abstract: Project that involves using a scanning tunneling microscope to examine electrode surfaces before and after modification.

Cited by 10 publications

References 2 publications

Molecular Photography in the Undergraduate Laboratory: Identification of Functional Groups Using Scanning Tunneling Microscopy

Molecular Photography in the Undergraduate Laboratory: Identification of Functional Groups Using Scanning Tunneling Microscopy

Automated Scanning Probe Lithography with n-Alkanethiol Self-Assembled Monolayers on Au(111): Application for Teaching Undergraduate Laboratories

Getting Close with the Instructional Scanning Tunneling Microscope

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