Bandgap tailoring refers to the ability to modify or engineer the bandgap of a material, typically a semiconductor, to …
What is a superconductor? Superconductors are materials whose resistivity becomes immeasurably small or actually be…
Spontaneous Emission: We know that when a quantum mechanical system such as atom, molecule or subatomic particle (el…
According to modern electron theory, all matter is composed of three fundamental particles that are invisible to the na…
The pn junction is typically used as an electrical switch. In forward bias, referred to as the on state, a relatively…
Inside a perfect silicon crystal, every atom is bonded to four neighbours. At the surface that perfect pattern sud…
According to classical theory (described by drude ) generally free electrons move randomly in all possible directions…
The crystal, instead of being seen as different sets of parallel planes, may be represented by a normal draw…
Crystals are described by planes and directions of atoms, and Miller indices are the standard shorthand for naming…
Bravais in 1848 had shown that all crystal structure can be generated by using only 14 types of unit cell or spa…
Almost every EEE, Physics and Materials Science exam (BCS, PGCB, BPDB, BREB, DPDC, university finals) asks at least…
Every capacitor, cable, transformer and circuit board depends on a dielectric — a material that does not conduct, …
