Quantum cascade laser — Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid to far infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson,… … Wikipedia
Quantum well laser — Origin of the concept of quantum wells= In 1972, Charles H. Henry, a physicist and newly appointed Head of the Semiconductor Electronics Research Department at Bell Laboratories, had a keen interest in the subject of integrated optics, the… … Wikipedia
Quantum point contact — A Quantum Point Contact (QPC) is a narrow constriction between two wide electrically conducting regions, of a width comparable to the electronic wavelength (nano to micrometer). Quantum point contacts were first reported in 1988 by a Dutch group… … Wikipedia
Quantum Hall effect — The quantum Hall effect (or integer quantum Hall effect) is a quantum mechanical version of the Hall effect, observed in two dimensional electron systems subjected to low temperatures and strong magnetic fields, in which the Hall conductivity σ… … Wikipedia
Double heterostructure — A double heterostructure is formed when two semiconductor materials are grown in to a sandwich . One material (such as AlGaAs) is used for the outer layers (or cladding), and another of smaller band gap (such as GaAs) is used for the inner layer … Wikipedia
Fractional quantum Hall effect — The fractional quantum Hall effect (FQHE) is a physical phenomenon in which a certain system behaves as if it were composed of particles with charge smaller than the elementary charge. Its discovery and explanation were recognized by the 1998… … Wikipedia
Outline of nanotechnology — The following outline is provided as an overview of and topical guide to nanotechnology: Nanotechnology – study of physical phenomena on the nanoscale, dealing with things measured in nanometres, billionths of a meter. Contents 1 Branches of… … Wikipedia
List of nanotechnology topics — For a gentler introduction to nanotechnology, see List of basic nanotechnology topics This is a hierarchical list of (all) topics related to nanotechnology. Items marked with an asterisk (*) appear more than once in the list. General * History of … Wikipedia
Nanostructure — Part of a series of articles on Nanomaterials Fullerenes … Wikipedia
Indium gallium nitride — (InGaN, IndiumxGallium1 xNitrogen) is a semiconductor material made of a mix of gallium nitride (GaN) and indium nitride (InN). It is a ternary group III/group V direct bandgap semiconductor. Its band gap can be tuned by varying the amount of… … Wikipedia
