As shown in figure sagging and straightening represent and states, respectively, ’1’ ‘0’ for a random access memory. In its the nanotube fabric remains suspended above the ‘0’state, electrode. When the transistor below the electrode is turned on, the electrode is turned on, the electrode produces an electric field that causes the nanotubes fabric to bend and touch the electrode - a configuration that state. This is the principle of a switching device. denotes ‘1’ A nanotube memory is faster much smaller while consuming little power. Due to their extraordinary tensile strength, resilience and very high conductivity, nanotubes can be flexed up and down million times without any damage and can make a very good switching contact. fig. 4.2 suspended nanotube switched connection fig. 4.3 When reading an OFF state no current flows from the carbon nanotube ribbon to the electrode fig. 4.4 When reading an ON state a current passes from the carbon nanotube to the electrode 4.3 Fabrication of NRAM This nanoelectromechanical memory, called NRAM, is a memory with actual moving parts, with dimensions measured in nanometers. Its carbon nano-tube-based technology takes advantage of Vander Waals forces to create the basic on-off junctions of a bit. Vander Waals forces are interactions between atoms that enable non-covalent binding. They rely on electron attractions that arise only at the nano-scale level as a force to be reckoned with. The company is using this property in its design to integrate nano-scale material properties with established CMOS fabrication techniques.
As shown in figure sagging and straightening represent ’1’ and ‘0’ states, respectively, for a random access memory. In its ‘0’state, the nanotube fabric remains suspended above the electrode. When the transistor below the electrode is turned on, the electrode is turned on, the electrode produces an electric field that causes the nanotubes fabric to bend and touch the electrode - a configuration that denotes ‘1’ state. This is the principle of a switching device. A nanotube memory is faster much smaller while consuming little power. Due to their extraordinary tensile strength, resilience and very high conductivity, nanotubes can be flexed up and down million times without any damage and can make a very good switching contact. fig. 4.2 suspended nanotube switched connection fig. 4.3 When reading an OFF state no current flows from the carbon nanotube ribbon to the electrode fig. 4.4 When reading an ON state a current passes from the carbon nanotube to the electrode 4.3 Fabrication of NRAM This nanoelectromechanical memory, called NRAM, is a memory with actual moving parts, with dimensions measured in nanometers. Its carbon nano-tube-based technology takes advantage of Vander Waals forces to create the basic on-off junctions of a bit. Vander Waals forces are interactions between atoms that enable non-covalent binding. They rely on electron attractions that arise only at the nano-scale level as a force to be reckoned with. The company is using this property in its design to integrate nano-scale material properties with established CMOS fabrication techniques.
82752432-Seminar-Report-of-Nano-ram.docx