Materials and Surface Characterization Title Facilities at - PowerPoint PPT Presentation

Materials and Surface Characterization Title Facilities at UAHuntsville MTS Program Presentations J J Weimer Associate Professor Chemistry / Chemical & Materials Engineering

Materials Outline Outline My Interests Techniques Characterization MTS Program Presentations Microscopies Examples Conclusions

Materials Outline Materials Science & Technology Chemistry Nature Structure Phases Response to an Properties MTS Program Presentations External Stimulus Performance Success / Failure Synthesis Preparation Processing

Surface Science & Technology My Interests What is a surface? Wolfgang Pauli “God created the volume, but the surface was invented by the devil” MTS Program Presentations A thin region between two phases. 1 − 100 layers of atoms or molecules

Surface Science & Technology My Interests What are my interests? Characterization What is in it? Chemistry Nature How much is in it? Structure How are they bonded? Phases What is their arrangement? MTS Program Presentations Response to an Properties External Stimulus Collaboration Performance Success / Failure Synthesis Functionalization Preparation Processing How can we make it?

Surface Science & Technology My Interests Thin Films Heterogeneous Adhesion Corrosion Biomaterials Tribology Catalysis MTS Program Presentations

Characterization Techniques Chemistry (Spectroscopies) Auger Electron ... (AES) Energy Dispersive ... (EDS) Fourier Transform Infrared ... (FTIR) Raman … MTS Program Presentations X-ray Photoelectron ... (XPS) Characterization What is in it? How much is in it? How are they bonded?

Characterization Techniques Structure (Microscopy) Optical … Scanning Electron … (SEM) Probe Microscopy (AFM, SPM, …) Scanning Tunneling … (STM) MTS Program Presentations Structure (Diffraction) X-ray … (XRD) Characterization How is their arrangement?

Characterization MTS Program Presentations Microscopies

Characterization Dimension 3000 (in startup) Scanning < 100 microns Range Resolution nearly atomic MTS Program Presentations contact Modes tapping Special phase contrast magnetic force Studies thermal imaging …

Characterization Nanoscope III (in planning) Scanning < 100 nm Range Resolution atomic! MTS Program Presentations … Modes tunneling Special … liquid cells Studies

Examples MTS Program Presentations image size Surface Roughness treatment

Surface Roughness Examples No Thermal Treatment MTS Program Presentations Heat Treated HTC Coating — greater surface roughness — dissolves faster

Polymer Agglomeration Examples water Problem Quality of tapping mode image is MTS Program Presentations affected by fluid propanol phase above the surface PEG Molecular Weight

Conclusions Materials Science & Technology Surface Science & Technology MTS Program Presentations Materials / Surface Characterization Thank you!

° Can the fluorescence microscope in Biology End Questions Department have any use here? - J Fix ° How much is needed to reconstitute the Nanoscope III? - J Evans ° What about reconstituting the Biorad IR MTS Program Presentations instrument? - K Chittur ° Does any interest exist for using the NMR for solid state? - J Fix ° What is the IR range of the instrument being brought to Chemistry? - J Williams