The piezoelectric transduction is based on the conversion of mechanical vibrations into electrical signals and vice versa. The piezoelectric effect involves the generation of electric charge by a material when subjected to a mechanical deformation. The redistribution of electrical charges … Read more
Category: Applied Physics
Applied Physics: We cover key areas in electromagnetism, semiconductor physics, electronic tubes, lasers, fiber optics, nuclear engineering, radar, plasma physics, lidar, MRI, quantum optics, computational physics, quantum computing, etc.
How Photoelectric Effect Impacts p-n Junctions
When light strikes a semiconductor p-n junction, its energy is absorbed by electrons. Electrons and holes generated by light in the p-n junction are swept by the junction electrical field. Consequently, the current flows through the junction.
The figure below … Read more
Principle of Operation and Applications of a Laser Diode
Laser diodes are PN junction devices under a forward bias. LASER is an acronym for Light Amplification by Stimulated Emission of Radiation.
Laser Diode Structure
The laser diode structure can be divided into two categories:… Read more
How the Photoelectric Effect Influences Semiconductors
A photoelectric effect is any effect in which light energy is converted to electricity. When light strikes certain light-sensitive materials, it may cause them to give electrons or change their ability to conduct electricity or may cause them to develop … Read more
Basic Facts about Quantum Computing
Quantum computers employ the laws of quantum mechanics to process data. Quantum mechanics in itself is the study of matter and light on the atomic and subatomic scale. Quantum material behaves according to the laws of quantum mechanics. At the … Read more
The Basics of Semiconductor Physics as the Foundation of Electronics
Metals have a large number of weakly bound electrons in what is called their conduction band. When an electric field is applied to a metal such as copper, the electrons migrate freely producing a current through the metal. Because of … Read more
The Basics Facts about Photons
Photons are the elemental units of electromagnetic spectrum. For example, white light is composed of a number of different kinds of photons, some are red photons, some are blue photons, etc. Note that, there is no white photon; instead the … Read more
Electromagnetism and Its Applications
What is Magnetism?
Magnetism is the force exerted by magnets when they attract or repel each other. This magnetism force is caused by the motion of electric charges. Every element or substance is made up of tiny units called atoms. … Read more
Microwave Tubes
It was discovered in 1939 that a toroidal cavity made of conductive material called a cavity resonator surrounding an electron beam of oscillating intensity could extract power from the beam without intercepting the beam itself. The oscillating electric and magnetic … Read more