FOUNDATION COURSES

ENGINEERING PHYSIC

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UNIT-I LASERS AND OPTICAL FIBERS

Interaction of Radiation with Matter -Essentials of Laser-Types of Laser - Ruby Laser He - Ne Laser -semiconductor Laser-Application of Lasers -Optical Fibers – Propagation of light through an optical fibers- Modes of Propagation -Types of optical fibers -Optical fiber communication system- Attenuation in fibers.

UNIT-II Band Theory of Solids & Semiconductor

Band Theory of solids -Energy Bands -Energy Gap -Classification of solids -Energy Band structure of a conductor –Fermi Dirac distribution function and Fermi Energy-Energy Band structure of an Insulator and semiconductor.

Introduction - Types of semiconductors- Intrinsic carrier electron and hole concentration- Fermi level in intrinsic- carrier density- conductivity- Doping of impurities- N -Type and P -Type- Fermi level in semiconductor- Hall Effect - Hall voltage-Hall coefficient- Application.

UNIT -III Magnetic and Dielectric Materials

Introduction to Magnetic materials- Types- Magnetic moment of atom- Hard and soft magnetic materials- Hysteresis curve – Applications.

Dielectrics- Electronic - ionic - orientational and space polarizations – Internal fields in solids – Polarization-Induced dipoles- Nonpolar and Polar dielectrics - ClausiusMosotti equation - Dielectric loss.

UNIT-IV SUPERCONDUCTIVITY

Discovery of superconductivity- persistent currents- Effect of external magnetic field- critical current density- Meissner effect- London penetration depth- BCS Theory

descriptive- Type of superconductors- Josephson Effect (AC and DC)- Applications – Maglev-SQUIDS.

UNIT -V NANOTECHNOLOGY AND ADVANCED MATERIALS

Nano phase materials – Synthesis – Plasma arcing – chemical vapour deposition – Sol gel method – Electro deposition – Ball milling – properties and application – Carbon nano tubes – types.

Online resources:

URL1: http://www.nptel.ac.in/courses/122101002/downloads/lec-34.pdf

URL 2: https://www.youtube.com/watch?v=mB0FpnWzHDw

URL 3: http://www.nptel.ac.in/courses/115101012/

URL 4: https://www.youtube.com/watch?v=TeS_U9qFg7Y

URL 5^:http://hyperphysics.phy-astr.gsu.edu/hbase/solids/squid.html

URl 6: https://www.youtube.com/watch?v=11PynxAhebs

URL 7: http://www.nptel.ac.in/courses/118104008/

URL 8: https://www.youtube.com/watch?v=GTGmIlkQF8M

URL 9: https://www.youtube.com/watch?v=k27ukETADD8

URL 10: https://www.youtube.com/watch?v=1DzoVjVuB2I

URL 11: https://www.youtube.com/watch?v=VlWGIKCV_6k