We call the energy gap between conduction and valence as forbidden energy gap. The forbidden energy gap of silicon is 1.1 eV and same for germanium is 0.7 eV. As the forbidden energy gap is quite moderate, an electron in valence band requires a small energy to cross the forbidden energy ga...
Relating to physics, describe an insulator. What is grounding? What effect does it have on a charged conductor? On a charged insulator? Give an example of a good conductor, a fair conductor, a partial conductor, and an insulator. Why do electrons in insulators not contribute to its conductiv...
The border line between semiconductors and insulators is rather arbitrary. In particular,the value of the energy gap separating the semiconducting materials from insulating one is not well-defined. For example,diamond(C)was considered for a long time an insulator,but today it is possible to prepa...
Semiconductor – Facts and Physics As I mentioned above, a semiconductor has a dual property – conductor and insulator of electricity. This property depends on impurities added to the semiconductor material (A pure such material is called an “intrinsic”). The impurities added to the material ...
When materials become superconductors, their electrons match up, forming Cooper pairs. These pairs can carry a charge across barriers, or insulators, through a process known as quantum tunneling. Two superconductors placed on either side of an insulator form a Josephson junction, a crucial piece of...
Opposition to current flow in a material. Teflon has a high resistivity, making it an excellent electrical insulator. 9 Conductivity Ability to conduct electric current. Silver has one of the highest conductivities, ideal for high-performance electrical connections. 10 Resistivity Varies with temperature...
Dielectric material is composed of atoms that do not have free-flowing electrons, as the electrons are fixed in place and so cannot conduct electric flow. A dielectric material is able to store electrical energy, which is different from a material that is merely an insulator....
The quantum tunneling effect is a quantum phenomenon that occurs when particles move through a barrier that, according to the theories of classical physics, should be impossible to pass through. The barrier may be a physically impassable medium, such as an insulator or a vacuum, or a region of...
Two objects are moving in different directions. Under what circumstances can you treat this as a one-dimensional problem? Explain what happens inside a conductor when a charged object is brought nearby. Explain what happens inside an insulator when a charged object is brought nearby. ...
Dielectric material is composed of atoms that do not have free-flowing electrons, as the electrons are fixed in place and so cannot conduct electric flow. A dielectric material is able to store electrical energy, which is different from a material that is merely an insulator....