Perhaps the simplest radio one can build is the crystal radio. Using a diode as a detector, the design generally uses less than 10 components and no battery, getting its power to run from the ...

A crystal radio is basically a high Q resonator tied to an antenna and an envelope detector. These days the envelope detector is a point contact diode such as a 1N34 Germanium diode. The resonant ...

Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

The four-layer diode, also known as a Shockley Diode, is a crystal made of alternating layers of N- and P- type semiconductors. By putting in four layers, instead of the three used in transistors ...

This approach integrates p-type diamond with n-type ε-Ga 2 O 3 for fabricating power pn diodes. The heteroepitaxial n-type ε-Ga 2 O 3 film was grown on the p-type diamond single-crystal ...

LCD (Liquid Crystal Display) IPS-LCD (In-Plane Switching Liquid Crystal Display) OLED (Organic Light-Emitting Diode) AMOLED (Active-Matrix Organic Light-Emitting Diode) The screen, when combined ...

Photonic crystal surface-emitting lasers or PCSELs are laser diodes that generate laser beams through controlled light wave interaction within a photonic crystal structure. In a recent study, ...