Nanoscience What Is It What Makes Nanoscience so

Nanoscience What Is It? What Makes Nanoscience so Important?

Nanoscience incorporates many disciplines Physics Engineering Chemistry Molecular Biology What Makes Nanoscience so Important? © Mc. REL 2009 Materials Science 2

Nanoparticle Properties size What Makes Nanoscience so Important? © Mc. REL 2009 3

Challenges Nanoparticle properties depend on… Size Shape Composition What Makes Nanoscience so Important? © Mc. REL 2009 4

Challenges Professor David Goldhaber-Gordon, Department of Physics, Stanford University What Makes Nanoscience so Important? © Mc. REL 2009 5

Atomic Force Microscopy sharp tip cantilever AFM measures and images the topography of surface. The deflection of the cantilever is proportional to height of surface feature. What Makes Nanoscience so Important? © Mc. REL 2009 6

Nanoscience “Just wait—the 21 st century is going to be incredible. We are about to be able to build things that work on the smallest possible length scales, atom by atom. These nanothings will revolutionize industries and our lives. ” --- Richard Smalley, 1999 What Makes Nanoscience so Important? © Mc. REL 2009 7

Nanoscience Ethical Problems What happens when engineered nanoparticles are found to have unexpected negative side effects? What Makes Nanoscience so Important? © Mc. REL 2009 8

Nanoscience Ethical Problems How should we approach the privacy issues that accompany use of nanoparticle applications? What Makes Nanoscience so Important? © Mc. REL 2009 9

Making Connections 1. What is meant by saying that nanoscale science is interdisciplinary? 2. What are the factors that affect the properties of materials at the nanoscale? 3. How is the atomic force microscope used to image nanoparticles? 4. What properties do you think are most changed at the nanoscale? 5. How do you think nano materials are fabricated? What Makes Nanoscience so Important? © Mc. REL 2009 10

Module Flow Chart Lesson 1. 1 What is Nanoscience? Examine and Compare size: macro, micro, submicro (nano) SI prefixes Lesson 1. 2 What Makes Nanoscience so Different? Lesson 1. 3 What Makes Nanoscience so Important? What makes Nanoscience so different? Compare Newtonian and Quantum Chemistry Regimes as they relate to nanoscale science Interdisciplinary science The development of new technologies and instrumentation applications whose risk and benefits have yet to be determined Lesson 2. 2 Extendable Solids: Reactivity, Catalysis, Adsorption Lesson 2. 3 Extendable Structures: Melting Point, Color Conductivity What Makes Nanoscience so Important? © Mc. REL 2009 Poster Assessment Lesson 2. 1 Extendable Solids Students will further investigate the essential question that they have considered throughout the module: How and why do the chemical and physical properties of nanosamples differ from those of macrosamples? Lesson 3. 1 Carbon Chemistry Lesson 3. 2 Fullerenes and Nanotubes 11