Scanning tunneling microscopy of silicon and carbon

Braun, Robert D.

doi:10.1021/ed069pa90

Cited by 8 publications

(8 citation statements)

References 35 publications

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“…That is a phenomenal observation for a 50-year old chemist to appreciate; a realization of a dream. The accompanying article suggests that hardware from which such 'pictures' can be obtained is within the financial reach of many small departments (14). Chemistry still is exciting in and of itself, especially to an expert.…”

Section: Computers Have Changed How Chemistry Is Accomplishedmentioning

confidence: 99%

General Chemistry Needs More Resources, Teachers with Attitudes that Enhance Self-Esteem, and Chemical Foresight

Brooks¹

1993

J. Chem. Educ.

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Section: Computers Have Changed How Chemistry Is Accomplishedmentioning

confidence: 99%

General Chemistry Needs More Resources, Teachers with Attitudes that Enhance Self-Esteem, and Chemical Foresight

Brooks¹

1993

J. Chem. Educ.

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“…Die Rastertunnelmikroskopie als spezielle Repräsentantin der Rastersondenverfahren ist dabei auf leitende Materialien beschränkt, im Gegensatz zu verwandten rasterkraftmikroskopischen Methoden [6]. Die RTM stellt dabei einen seltenen Fall dar, bei der der wissenschaftliche Wert der Methode außer Frage steht, zugleich das didaktische Potential der Methode aber schon relativ früh erkannt wurde [7,8]. Didaktisch mehr oder weniger aufbereitete Untersuchungen in der Hochschullehre bezüglich RTMSelbstbau [9], Oberflächen-und Adsorbatstrukturen bzw.…”

Section: Introductionunclassified

Das didaktische Potential der Rastertunnelmikroskopie in der Hochschullehre

Penner

Most

Scheier

et al. 2015

Chemkon

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Zusammenfassung: Dem Rastertunnelmikroskop kommt in der Hochschulausbildung eine immer grçßere Bedeutung zu, erlaubt es doch einen relativ einfachen Zugang nicht nur zur Sichtbarmachung der atomaren und elektronischen Struktur von Festkçrpern, sondern auch zu verwandten, meist schwer fasslichen physikalischchemischen Themen und Phänomenen. Dazu gehçrt auch der quantenmechanische Tunneleffekt, welcher der Messmethode zugrunde liegt. Didaktisch wertvoll, erlaubt die neue Generation der eigens für den Unterricht konzipierten Rastertunnelmikroskope eine einfache Bedienung und Datenanalyse durch Studierende selbst. Im vorliegenden Manuskript werden die Mçglichkeiten des Einsatzes solcher Mikroskope in der universitären Lehre kritisch beleuchtet und durch einen Ausblick auf den Schulunterricht ergänzt. Stichworte: atomare Struktur · Rastertunnelmikroskop · TunneleffektUse of the Scanning Tunneling Microscope in University Teaching -didactic potential and restrictions Abstract: The use of the Scanning Tunneling Microscope (STM) in university teaching allows for both a very easy access to the atomic and electronic structure of solids and to gain insight into various, sometimes hardly comprehensible, physico-chemical phenomena like the quantum mechanical tunneling effect. The new generation of easy-to-use STMs, specially designed for teaching purposes, allows self-operation and data-analysis by interested university students. The present manuscript critically discusses the possibilities of STM in university teaching, but also gives an outlook to the use in high-school teaching.

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“…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. 11,20 Student experiments with SPM provide 2D and 3D surface maps for illustrating the analysis of data such as height histograms, roughness measurements, and digital image processing.…”

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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Scanning tunneling microscopy of silicon and carbon

Abstract: The author describes some of the advantages and uses of scanning tunneling microscopy (STM) as well as a student laboratory using STM.

Cited by 8 publications

References 35 publications

General Chemistry Needs More Resources, Teachers with Attitudes that Enhance Self-Esteem, and Chemical Foresight

General Chemistry Needs More Resources, Teachers with Attitudes that Enhance Self-Esteem, and Chemical Foresight

Das didaktische Potential der Rastertunnelmikroskopie in der Hochschullehre

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

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