文档介绍：Nano-devices
1, Nano-scale devices
2, Molecular devices
3, Devices with nano-materials
Nanoscale devices
Nano-computers
Electronic Nanocomputers
Quantum mechanical tunneling effect
Chemical Nanocomputers
Stores information in the chemical bonds: DNA etc.
Mechanical Nanocomputers
Moving molecular scale parts: how to assemble ?
Quantum computer
Each bit of information as a quantum state: spins etc
Nanoelectronic Devices
Solid state nanoelectronic devices
Quantum dots “artificial atoms” (QD): 0-D
Resonant Tunneling Devices (RTD, RTT): 1- or 2-D
Single Electron Transistor (SET): 3-D
Quantum Cellular Automata (QCA)
Magnetic Random Access Memory (MRAM)
Islands confine
electrons
Microelectronic Transistor: structure, operation, obstacles to miniaturization
Function of transistor
- Two state device or switch
- Amplification
n- and p-type Silicon Semiconductor
p-type
B doped
Hole carrier
n-type
P, As doped
Electron carrier
B
P
Depletion region
- +
- +
- +
+
-
EF
p n
Some of the free electrons in the n-region diffuse across the junction and combine with holes to form negative ions. In so doing they leave behind positive ions at the donor impurity sites.
Structure and Operation of MOSFET