Integrating SPM into research activities and chemistry ... SPM into research activities and...
Transcript of Integrating SPM into research activities and chemistry ... SPM into research activities and...
Integrating SPM into research activities and chemistry laboratories for undergraduates
Jayne C. Garno
Department of ChemistryLouisiana 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To modernize our long-outdated teaching laboratories..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
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 asaluminum 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 2007undergraduate images
Chem 3493 Physical Chemistry laboratory, Fall 2006
Chem 3493 Physical Chemistry laboratory, Fall 2006
Undergraduate Research Experience(Chem 2900, Chem 3900, Biol 3999)
Research internships for undergraduates
Introduction to chemical research by association with departmental research groups
Written report of research problem is required.
Introduction to chemical/biological research methods.
Fulfills ACS senior thesis requirement
Microwave Synthesis of Metal Nanoparticles
Nick Flurryundergraduate junior
Chem 3900
topography
phase
2500 nm 1250 nm
2500 nm 1250 nm 500 nm
500 nm distance (nm)
heig
ht (n
m)
02.55.07.5
10.012.515.017.520.0
0 200 400 1000 1400600 1200800
Lithium battery separators: CelgardTM
Andrew Fulkssenior undergraduate
Chem 3900
Lithium battery separators: CelgardTM
Recycling gold substrates for AFM
Recycled template stripped gold substrates glued on glass
3 X 3 μm2 1 X 1 μm2 500 X 500 nm2
Used gold film on mica(0001) - contaminated
Edugie OmoregebeeSenior undergraduate
Biol 3999
Anodized Alumina Pore Membranes
Edugie OmoregebeeSenior undergraduate
Biol 3999
Contact mode AFM
AFM contact mode views of anodized aluminum membrane reveal the capability of AFM to visualize intricate details of this highly porous sample . The pore size is only 100 nm in diameter.
3 X 3 μm2 1 X 1 μm2 0.5 X 0.5 μm2
Imaging and Annealing Aluminum Foil
Kai Liuundergraduate junior
AC-mode AFMin Air
(tapping)
Undergraduate research posters!
Undergraduate ResearchersUndergraduate Researchers
Ishaneka Williams Patrick Igbokwe
Lauren Williams Rashonda DukesGretchen Henry
Molly HebertMary Loftus
Undergraduates!Undergraduates!
Ishaneka WilliamsAndrew Fulks
Lauren Williams
Rashonda Dukes Gretchen Henry
Lisa Brown
Clint Bize
Carissa Lanoue
Richard Rucker
Mary Loftus
Lisa Brown
Undergraduates!Undergraduates!
Glenys Castro
Bryan Brown Craig Sabottke
Treva Brown
Nick Flurry
Algernon Kelley Belle LeJeune
Brian LewandowskiWilson Serem
Jie-Ren Li
Johnpeter Ngunjiri
LSU Graduate Students 2007
Stephanie Daniels
Kathie Lusker
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 stepforward 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