Semiconductor physics classification of

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Semiconductor physics: Classification of semiconductors, P-N junction diode and its characteristics, carrier concentration in P and N type semiconductors, Equation of continuity. UNIT – II Magnetic, Dielectric and Ferro-electric materials (10 periods) Origin of magnetic moment of an atom, Bohr magneton, Weiss theory of Ferro magnetism (Qualitative), Hysteresis curve, soft and hard magnetic materials, ferrites and its applications. Dielectric materials, Types of polarizations, internal field (qualitative), Classius – Mossetti equation, Frequency dependence of polarization, Ferroelectrics and its applications. UNIT – III Advanced materials (12 periods) Nano-materials : Introduction to nano-materials, Fabrication of nano-materials and carbon nano tubes (CVD and sol-gel), physical and chemical properties of nano materials, Applications of nano materials (Structural point, Storage of information, Strength point) Superconductivity: Meissner effect, types of superconductors, elements of BCS theory, Applications of superconductors. Opto-electronic devices: Working and applications of solar cell,LED, LCD, Photo Diode. UNIT – IV Analytical techniques (10 periods) Nuclear techniques: Radio isotopes and its applications (Medical and Industrial), GM-counter, scintillation counter. Ultrasonics: Properties of ultrasonics, General applications of ultrasonics. Medical applications : Cardiology, Neurology, Ultrasonic imaging. NDT: Pulse echo technique, cavitation effect, Time of flight diffraction technique. Structure determination : Crystal planes, Bragg’s law, structural analysis of crystal using X-Ray powder diffraction method. TEXT BOOKS: 1. “Engineering physics”,M.R.Sreenivasan, Newage International Publication. 2. “Engineering Physics”, Palaniswamy, ScitechPulishers. 3. “Solid State Physics”, Dekkar. REFERENCE BOOKS: 1. “Material Science for scientists and Engineers”, Srinivasan&Srivastava, TMH Publishers. 2. “A text book of engineering physics”, M.N.Avadhanulu& P. Krushisagar, S.Chand Pub. 3. “Material Science”, VijayaRangarajan.
EI123 ENGINEERING CHEMISTRY – II (Common to all branches) CY02 Lectures : 3 Periods/Week Continuous Assessment : 40 Final Exam : 3 hours Final Exam Marks : 60 UNIT – I (11 Periods) ELECTROCHEMISTRY Electrochemical cells – reversible and irreversible cells – EMF – measurement of emf – Single electrode potential – Nernst equation (problem) – reference electrodes –Standard Hydrogen electrode -Calomel electrode – Ion selective electrode – glass electrode and measurement of pH – electrochemical series – significance –potentiometer titrations (redox - Fe² + vs dichromate and precipitation – Ag + vs CI - titrations) and conduct metric titrations (acid-base – HCI vs, NaOH) titrations. UNIT - II (11 Periods) CORROSION AND CORROSION CONTROL Chemical corrosion – Pilling – Bedworth rule – electrochemical corrosion – different types – galvanic corrosion – differential aeration corrosion – factors influencing corrosion – corrosion

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