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Nanostructured Materials Processing: Powders, Patterns & Pores

Nanostructured Materials Processing: Powders, Patterns & Pores. 500nm. Sundar V. Atre, Ph.D. 500nm. 500nm. Research Overview. Nanomaterials. ceramics , polymers, metals, composites. Microfeatures. Applications. channels, pillars, wells. sensors, medical, energy storage, packaging.

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Nanostructured Materials Processing: Powders, Patterns & Pores

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  1. Nanostructured Materials Processing: Powders, Patterns & Pores 500nm Sundar V. Atre, Ph.D. 500nm 500nm

  2. Research Overview Nanomaterials ceramics, polymers, metals, composites Microfeatures Applications channels, pillars, wells sensors, medical, energy storage, packaging

  3. Top Support Plate Fluid Collection Cap Top one-side plate Film Diffusion Area Fluid Collection Cap Two-side plate Film Two-side plate Film Two-side plate Film Bottom one-side plate Bottom Support Plate Cellulose Nanocrystals-CNXLs Goran Jovanovic John Simonsen Sweda Noorani CNXL composite membranes for improved selectivity and stiffness US Patent 7955504 B1

  4. Ceramic Nanoparticles: n-AlN Valmika Nathan Greg Purdy Grant Kim (Powder Technology –submitted; Powdermet 2010; NSTI Nanotech 2010)

  5. AlN: Powder Injection Molding final powder debind flow shape sinter Powder Injection Molding International 2010; SME 2011; ABM 2011

  6. AlN PIM: Sintering 500 °C 800 °C 1100 °C µ-AlN 500 °C 1100 °C 1300 °C 1500 °C µ-n AlN • Nanorod formation was observed at 1100 °C for monomodal µ-AlN • Liquid phase formation was observed at 1500 °C • n-Y2O3 and n-AlN lead to liquid phase formation at lower temperatures (100 °C lower than prior reports) Valmika Nathan

  7. AlN PIM: Sintering (c) 1650 °C • Higher initial solids loading lead to lower shrinkage for bimodal sample (14±1%) than the conventional monomodal ones (>20%) Valmika Nathan Ceramics International 2012

  8. Si3N4 UAV Engines • Higher fuel efficiency at higher operating temperature • Light weight • Smaller component size: better fit with process and materials JOM, 2012 Juergen Lenz

  9. PIM of Si3N4 Nanoparticles

  10. PIM: BaTiO3Microwells Sintered Green Powder Injection Molding International 2011 Valmika Nathan

  11. Alternative: Green Micromachining • Laser Carl Wu Valmika Nathan a b • Micromilling Burak Ozdoganlar

  12. Patterned Polymer Films Modified PVDF Valmika Nathan

  13. Microstructure Armor Electronic Packages dρ ρ Plasma Pressure Compaction Master Sintering Curve Work Ceramic Nanoparticles: n-SiC

  14. 1 μm n-SiC: Microstructure-Properties Manish Bothara, T. S. Sudarshan, Seong-Jin Park, Rand German (Metallurgical & Materials Transactions, 2010, Science of Sintering 2011)

  15. B 200 nm A C Pores: Anodization ABM 2011 Negar Monfared

  16. Pores: Nanorod Templates Polyurea silazane (PUSZ) PUSZ, 9 hr UV curing, 2 hr thermal curing at 600°C (1.2°C/min), pyrolysis at 1100°C (1.2°C/min) PUSZ , 5 minutes vacuum, 5 hr UV, no thermal curing, pyrolysis for 2 hr at 1100°C (5°C/min) ABM 2012 Negar Monfared

  17. Pores: Biosensors Nearly 5 Orders of Magnitude Increase In Performance Shalini Prasad

  18. A B D C 20 nm Hypothesis: Macromolecular Crowding

  19. Integrating Length Scales PAA functionalization: Langmuir 2011

  20. Summary • Nano-structured materials: particles, patterns, pores • Material systems: polymers, metals, ceramics 500nm • Integration with microsystems • Applications: energy, healthcare, homeland security, packaging 500nm 500nm

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