Integrating SPM into research activities and chemistry laboratories for undergraduates Jayne C. Garno Department of Chemistry Louisiana State University.

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Presentation transcript:

Integrating SPM into research activities and chemistry laboratories for undergraduates Jayne C. Garno Department of Chemistry Louisiana State University Baton Rouge, LA

 Because SPM instruments are becoming increasingly important and valuable for studying surface reactions and molecular properties  To give students a “hands-on” experience with molecules and nanoscience  Because many top universities have already demonstrated success with undergrad labs using SPM..  For the “enthusiasm” factor – to help with undergraduate retention in a challenging science curriculum..  To modernize our long-outdated teaching laboratories.. To provide our students with state-of-the-art technology  Because there is an emerging need for workers with SPM skills Why introduce SPM in the undergraduate curriculum?

LSU Chem 3493, Spring 2007

Basic Concepts for SPM laboratories  Instrument operating principle of AFM and/or STM  Overview of forces that can be measured and mapped using SPM (ie magnetic, electronic, adhesive, frictional forces)  Principle of force-distance measurements  Views of molecularly resolved lattices such as Au(111), mica(0001), self-assembled monolayers, graphite.  Application of AFM for surface fabrication: nanografting with SAMs  Basic digital image processing skills with basic samples such as aluminum foil, nanoparticles, polymer films, latex films. (cursor profiles, height histograms, roughness measurements. 1 nm

Periodic arrays of polystyrene latex spheres Chem 3493, Spring 2007

Periodic arrays of polystyrene latex spheres topography phase Chem 3493, Spring 2007

topography friction Mickey-Mouse Nanoshaving Experiment Chem 3493, Spring 2007 undergraduate images

Chem 3493 Physical Chemistry laboratory, Fall 2006

Undergraduate Research Projects (Chem 2900, Chem 3900, Biol 3999)

Microwave Synthesis of Metal Nanoparticles Nick Flurry undergraduate junior Chem 3900 topography phase 2500 nm1250 nm 2500 nm1250 nm500 nm distance (nm) height (nm)

Lithium battery separators: Celgard TM Andrew Fulks senior undergraduate Chem 3900

Lithium battery separators: Celgard TM

Recycling gold substrates for AFM Recycled template stripped gold substrates glued on glass 3 X 3 μm 2 1 X 1 μm X 500 nm 2 Used gold film on mica(0001) - contaminated Edugie Omeregebee Senior undergraduate Biol 3999

Imaging and Annealing Aluminum Foil Kai Liu undergraduate junior AC-mode AFM in Air (tapping)

Undergraduate research posters!

Undergraduate Researchers Ishaneka WilliamsPatrick Igbokwe Lauren WilliamsRashonda Dukes Gretchen Henry Molly Hebert Mary Loftus

Undergraduates! Ishaneka Williams Andrew Fulks Lauren Williams Rashonda Dukes Gretchen Henry Lisa Brown Clint Bize Carissa Lanoue Richard Rucker Mary Loftus

Lisa Brown Undergraduates! Glenys Castro Bryan BrownCraig Sabottke Treva Brown Nick Flurry

Jayne, I must mention the excellent work your team of three graduate students did last week with my PCHEM 3493 class. Outstanding and highly professional ! My students learned a lot. I believe we did cover all aspects of AFM and some STM I had wanted. Thanks to your team, my students were involved at all stations, almost all the time. Considering that there were 18 students, one can imagine the effort it required to make them interested and busy. And they were! The moral of the story is also how important it is to introduce this type of instruments to our undergrads. The questions they asked and the experience they have now makes a significant step forward in their education. We should continue this work and use this experience in the development of our curriculum and present the results to other scientist/educators. Thanks to all of you and please tell them they got a BIG A+. Dr Kresimir Rupnik March 19, 2007