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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 1

Tham khảo tài liệu 'materials science and engineering - electronic and mechanical properties of materials part 1', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Electronic Materials Silicon Age Pervasive technology 3.225 Communications Computation Automation Defense Factors Reproducibility Reliability Miniaturization Functionality Cost H.L. Tuller-2001 1 What Features Distinguish Different Conductors Magnitude varies by over 25 orders of magnitude metal semiconductor insulator Carrier type electrons vs ions negative vs positive Mechanism wave-like activated hopping Field Dependence Linear vs non-linear --------------------------------------------------------------------- 3.225 H.L. Tuller-2001 2 1 How Do We Arrive at Properties That We Want Crystal Structure diamond vs graphite Composition silicon vs germanium Doping n-Si P vs p-Si B Microstructure single vs polycrystalline Processing Annealing Conditions ố wtl Ga1 xAs vs Ga1-xAs 3.225 H.L. Tuller-2001 3 What is the Application Interconnect Thermistor Resistor Piezoresistor Insulator Chemoresistor Non-ohmic device Photoconductor - diode transistor Magnetoresistor 3.225 H.L. Tuller-2001 4 2 Response of Material to Applied Potential Metals show Ohmic behavior microscopic origin ---------------------------------------------------------------------------------------- 3.225 E.A. Fitzgerald-1999 6