(位移传感器专业英语)Nanoelectronics.ppt

光电自准直光学系统设计 Nanoelectronics （位移传感器专业英语） Abstract The aim of Nanoelectronics is to process, transmit and store information by taking advantage of properties of matter that are distinctly different from macroscopic properties. The relevant length scale depends on the phenomena investigated: it is a few nm for molecules that act like transistors or memory devices, can be 999 nm for quantum dot where the spin of the electron is being used to process information. Definition Approaches to nanoelectronics Nanoelectronic devices Contents Nanocircuitry and nanolithography Nanofabrication For example, single electron transistors, which involve transistor operation based on a single electron. Nanoelectromechanical systems also fall under this category. Nanofabrication can be used to construct ultradense parallel arrays of nanowires, as an alternative to synthesizing nanowires individually. Schematic of a single electron transistor Besides being small and allowing more transistors to be packed into a single chip, the uniform and symmetrical structure of nanotubes allows a higher electron mobility (faster electron movement in the material), a higher dielectric constant (faster frequency), and a symmetrical electron/hole characteristic. Nanomaterials electronics Other approaches ◎Nanoionics studies the transport of ions rather than electrons in nanoscale systems. ◎Nanophotonics studies the behavior of light on the nanoscale, and has the goal of developing devices that take advantage of this behavior. ◎ Radios Nanoradios have been developed structured around carbon nanotubes. Spinning Carbon Nanotube ◎ Computers Simulation result for formation of inversion channel (electron density) and attainment of threshold voltage (IV) in a nanowire MOSFET. 光电自准直光学系统设计 光电自准直仪光学系统设计