Nano - and Micro Eelectromechanical Systems - S E Lyshevski Part 4 pptx

... developments. It was emphasized that NEMS and MEMS integrate many components and subsystems. One can reduce interconnected systems to simple, idealized subsystems (components). However, this ... theoretical foundations will be developed and used in analysis of NEMS and MEMS from systems standpoints. That is, we depart from the subsystem analysis and study NEMS and MEMS as dyna...

Ngày tải lên: 10/08/2014, 05:20

... not a subset of A, then these sets are not ordered with respect to each other. This relation can be used to partially order a set of sets in order to classify NEMS and MEMS. Sets possess some additional ... letters to represent sets and use lowercase letters to represent elements. By constructing a diagram that represents some initial sets, the designer can deduce other important relation...

Ngày tải lên: 10/08/2014, 05:20

... development must be performed. Nanoengineering studies nano- and microscale-size materials and structures, as well as devices and systems, whose structures and components exhibit novel physical (electromagnetic ... devices, and subsystems. The studied nano- and microscale structures and devices have dimensions of nano- and micrometers. To support the nano- and microtech...

Ngày tải lên: 10/08/2014, 05:20

... However, the comprehensive systems- level research must be performed because the specifications are imposed on the systems, not on the individual elements, structures, and subsystems of NEMS and ... attacked using advanced theories. The systems analysis of NEMS and MEMS as systems integrates analysis and design of structures, devices and subsystems used, structural optimizatio...

Ngày tải lên: 10/08/2014, 05:20

... respectively. There are two major ways to assemble parts. In particular, self assembly and positional assembly. Self-assembling is widely used at the molecular scale, and the DNA and RNA examples were already ... length; A is the cross-sectional area. It is important to emphasize that the parameters of NEMS and MEMS vary. Let us illustrate this using the simplest nano- structure used...

Ngày tải lên: 10/08/2014, 05:20

... (2.3.3) Here, q i and Q i are the generalized coordinates and the generalized forces (applied forces and disturbances). The generalized coordinates q i are used to derive expressions for energies ... illustrate that Lagrange s concept gives the same differential equations. We denote the electric charges in the first and the second loops as q 1 and q 2 , and the generalized...

Ngày tải lên: 10/08/2014, 05:20

... society. Nanoengineering studies NEMS and MEMS, as well as their structures and subsystems, which are made from atoms and molecules, and the electron is considered as a fundamental particle. The students ... engineering developments in NEMS and MEMS have undergone major developments in last years. High-performance nanostructures and nanodevices, as well as MEMS have been manufactu...

Ngày tải lên: 10/08/2014, 05:20

... analyze nanostructures and nanodevices because they operate under the quantum effects. The total energy of N -electron system under the external field is defined in the term of the three-dimensional ... substance (media) depends largely on the balance between the kinetic energies of the particles and the interparticle energies of attraction. The expression for the total potential energy...

Ngày tải lên: 10/08/2014, 05:20

... carbon nanotubes in nanoswitches 3.1.2. Microelectromechanical Systems and Microdevices Different MEMS have been discussed, and it was emphasized that MEMS can be used as actuators, sensors, and ... contrast, these characteristics (power, torque, and force densities) are not critical in sensor applications. Therefore, MEMS are widely used as sensors. Signal-level signals, measured b...

Ngày tải lên: 10/08/2014, 05:20

... electromechanical/electromagnetic-based motion nano- and microstructures (actuators and sensors) are classified using the specific classifiers, and the structural synthesis can be performed based ... elsewhere in the system and must be attenuated by proper bypassing. By insert- ing a small value resistor between the accelerometer and its power supply, an RC filter is created. This...

Ngày tải lên: 10/08/2014, 05:20