Chapter 1.3

Chapter 1.3 - Structure Subatomic level (Chapter 2)...

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MSE 2090: Introduction to Materials Science Chapter 1, Introduction 11 Subatomic level (Chapter 2) Electronic structure of individual atoms that defines interaction among atoms (interatomic bonding). Atomic level (Chapters 2 & 3) Arrangement of atoms in materials (for the same atoms can have different properties, e.g. two forms of carbon: graphite and diamond) Microscopic structure (Ch. 4) Arrangement of small grains of material that can be identified by microscopy. Macroscopic structure Structural elements that may be viewed with the naked eye. Structure
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MSE 2090: Introduction to Materials Science Chapter 1, Introduction 12 Length-scales Angstrom = 1Å = 1/10,000,000,000 meter = 10 -10 m Nanometer = 10 nm = 1/1,000,000,000 meter = 10 -9 m Micrometer = 1μm = 1/1,000,000 meter = 10 -6 m Millimeter = 1mm = 1/1,000 meter = 10 -3 m Interatomic distance ~ a few Å A human hair is ~ 50 μm Elongated bumps that make up the data track on a CD are ~ 0.5 μm wide, minimum 0.83 μm long, and 125 nm high
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13 Progress in atomic-level understanding DNA ~2 nm wide Things Natural Things Manmade
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Chapter 1.3 - Structure Subatomic level (Chapter 2)...

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