single-electron tunneling
61Linda M. Godwin — Infobox Astronaut name =Linda Maxine Godwin status =Active type =NASA Astronaut nationality =American date birth =July 2, 1952 place birth =Cape Girardeau, Missouri occupation =Scientist selection =1985 NASA Group time =38d 06h 13m mission =STS… …
62List of Guggenheim Fellowships awarded in 1999 — U.S. and Canadian Fellows= * Chris Aiken, Choreographer and Dancer, Minneapolis; Teaching Specialist in Theatre Arts and Dance, University of Minnesota: Choreography. * Jonathan Ames, Writer, New York City: Fiction. * Barbara Watson Andaya,… …
63Unimolecular rectifier — Single organic molecules can function as rectifiers (one way conductors) of electric current. This was first proposed in 1974 by Arieh (later Ari) Aviram, then at IBM, and Mark Ratner, then at New York University; their publication was the first… …
64microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …
65quantum mechanics — quantum mechanical, adj. Physics. a theory of the mechanics of atoms, molecules, and other physical systems that are subject to the uncertainty principle. Abbr.: QM Cf. nonrelativistic quantum mechanics, relativistic quantum mechanics. [1920 25]… …
66radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
67Photoconductive atomic force microscopy — (pc AFM) is a scientific technique.. Multi layer photovoltaic cells have gained popularity since mid 1980s.[1] At the time, research was primarily focused on single layer photovoltaic (PV) devices between two electrodes, in which PV properties… …
68Multijunction photovoltaic cell — Multi junction solar cells or tandem cells are solar cells containing several p n junctions. Each junction is tuned to a different wavelength of light, reducing one of the largest inherent sources of losses, and thereby increasing efficiency.… …
69Atomic force microscope — The atomic force microscope (AFM) or scanning force microscope (SFM) is a very high resolution type of scanning probe microscope, with demonstrated resolution of fractions of a nanometer, more than 1000 times better than the optical diffraction… …
70Nanotechnology — Part of a series of articles on …
