Innovative Technology for Innovative Science Hands-on in a Nanoscience Classroom Presented by Jennifer F. Wall, Ph.D.
Imaging Possibilities Optical 2 mm Electron 500 microns Atomic Force 10 microns Scanning Tunneling 5 nm Innovative Technology for Innovative Science 2
Hands-on in a Nanoscience Classroom Why Importance of micro and nanotechnologies Hands-on learning How: Complementary tools plus tips from the trade Scanning Electron Microscope (SEM) Atomic Force Microscope (AFM) Scanning Tunneling Microscope (STM) Optical Profiler Where: Nanoscience Classroom Scanning Probe Microscopy Innovative Technology for Innovative Science 3
Shrinking scales Why Nanotechnology Molecular and atomic properties Interfaces Micro and nanomanipulation Fundamental principles Product development Innovative Technology for Innovative Science 4
Why: Benefits of Hands-on Experiences Give students competitive edge Develop skills: Operation of scientific equipment Critical thinking Laboratory skills Data analysis Problem solving Self-direction Team work Peer learning Apply and retain knowledge Innovative Technology for Innovative Science 5
How: Classroom Necessities Ease of use Robust Accessible Versatile Affordable Rookie training SEM image of MEMS AFM image of Bluray disk Zeta image of fruit fly head Innovative Technology for Innovative Science 6
Why is Scanning Electron Microscopy Important? Advanced Engineering Semiconductors Microelectronics and MEMS Aerospace Solar Filtration Ultrasonic Biometrics Fuel Cells and Battery Green Technology Academic and Government Research Chemistry, physics, material sciences, engineering, biology universal! Life Sciences and Medical Pharmacology Medical devices and implants Bioengineering Cellular and molecular organisms Food sciences Innovative Technology for Innovative Science 7
Teaching with an SEM Then Size restrictions Logistics and infrastructure Dedicated personnel Student observation only Time limitations TJHS looking at nerve bundles Now Small footprint Infrastructure not needed Short learning cycle Students can operate No user maintenance Innovative Technology for Innovative Science 8
Video Importance of Materials Science and why every school needs a Phenom Full interview with Prof. Sir Colin Humphreys is at http://www.azom.com/article.aspx?articleid=12106 Innovative Technology for Innovative Science 9
How: Lab Modules for SEM Forensics lab Salt analysis and introduction to close-packing in solids Seed germination analysis Teaching art with the Phenom Crystal growth study Pollen lab to identify allergens Photosynthesis Teaching units with the SEM Simplified manual Simplified sample preparation guide Thanks to D. Moore, Chemeketa College, Univ. of AR, Oregon Museum of Science and Industry Innovative Technology for Innovative Science 10
How: SEM in the Lab Biology Biotechnology Biological films on fabric Immunology Forensics Hair, fibers, EDS Materials Science Polymers, ceramics, textiles, Environmental Science Micro-fossils, filtration particles, sand, volcanic ash CSI-style summer program Students prepare and image flagellates, diatoms, cells, and tissue Innovative Technology for Innovative Science 11
Why is Scanning Probe Microscopy Important? Surface Manipulation Moving atoms, molecules Lithography Life Science and Medical Targeted drug delivery DNA Cell biology Self-assembled structures Advanced Engineering Semiconductor Microelectronics Thin films Electro-optics Aerospace Ceramics Storage media Polymers Innovative Technology for Innovative Science 12
Teaching with an AFM Robust Portable Pre-aligned laser Students can operate No user maintenance Materials Engineering at Bronx CC Innovative Technology for Innovative Science 13
How: AFM Sample Kit Chip structure in Silicon CD stamper Gold colloids Nanotubes Glass beads Staphylococus Aureus Microstructure PS/PMMA film Skin cross-section Aluminum foil Innovative Technology for Innovative Science 14
Thanks to Prof. Jim Brenner How: AFM in the Lab at FIT Nanotechnology I Laboratory Laboratory Activities with AFM/STM Magnetic ferrofluids CdS and Au nanoparticles CNTs, porous C, nanowires Materials Characterization Laboratory SEM/EDS Mastery Skills TEM Mastery Skills STM Mastery Skills AFM Mastery Skills AFM tracks structural changes of ammonium hydrogen phosphate Innovative Technology for Innovative Science 15
How: AFM at Carnegie Mellon PA Governor s School for Sciences program Rigorous selection process High school junior program Use AFM to image live yeast cells Cell structure Effects oxidants and antioxidants Innovative Technology for Innovative Science 16
Teaching with an STM Robust Portable Students can operate No user maintenance PChem lab at TX A&M Innovative Technology for Innovative Science 17
Why Did the Electron Cross the Road?... How: STM in the Lab HOPG Gold SAM Porphyrins CNT Lab module for SAM courtesy of Dr. C. Sykes at Tufts University HOPG Scan size: 5 nm Au on mica Scan size: 10 mm Octodecanol Scan size: 16 nm Innovative Technology for Innovative Science 18
How: AFM and STM in the Lab University of Virginia Three AFMs and 3 STMs for nanoscience lab Molecular self-assembly, DNA scaffolding, microassembly Materials on the web per NSF grant Innovative Technology for Innovative Science 19
Why is an Optical Profiler Important? Life Sciences and Medical Microfluidics Bioassays Medical devices and implants Food sciences Materials in solution or oil Advanced Engineering Solar cells LED patterned surfaces Automated defect review Failure analysis Chamfer and side walls of semiconductors Thin films MEMS inspection Hard drive inspection Innovative Technology for Innovative Science 20
Teaching with an Optical Profiler More than an optical microscope Easy to use Fast Finger Profiles Innovative Technology for Innovative Science 21
How: Optical Profiler in the Lab Multi-mode Capability PLM Interferometry - roughness Reflectometry thin film thickness Metrology Multiple surfaces and step heights Surface Textures Educational Institutions using the Zeta Yale University Purdue University Stanford University University of Akron Louisiana Tech Forsyth Tech Northern Virginia Community College College of Lake County Wheeling High School Innovative Technology for Innovative Science 22
Hands-on in a Nanoscience Classroom Why Importance of micro and nanotechnologies Hands-on learning How: Complementary tools plus tips from the trade Scanning Electron Microscope (SEM) Atomic Force Microscope (AFM) Scanning Tunneling Microscope (STM) Optical Profiler Where: Nanoscience Classroom Scanning Probe Microscopy Innovative Technology for Innovative Science 23
Where? Innovative Technology for Innovative Science 24
Remote User Interface Samples must be pre-loaded Internet connection required Operation can be done remotely For SEM, integrated stage can be moved remotely Innovative Technology for Innovative Science 25
Benefits of Nanoscience Classroom Variety of imaging techniques Concepts of scale How each technique works to produce an image What scale is important for different problems? The difference between lateral and height scales Proficiency using optical, electron, and probe microscopes Problem-solving skills with understanding of technique capability Data analysis Instill excitement about the micro and nanoworlds Innovative Technology for Innovative Science 26
Nanoscience Instruments Team Team of scientists and engineers Veterans in nanotechnology instrumentation for education & industry Advanced degrees in physics, chemistry, materials science Broad knowledge of microscopy and characterization techniques Extensive network in STEM Offices & Applications labs across US Innovative Technology for Innovative Science 27