and microelectromechanical systems architecture

... SYNTHESIS OF NANO- ANDMICROELECTROMECHANICAL ACTUATORS AND SENSORS New advances in micromachining and microstructures, nano- and microscale electromechanical devices, analog and digital ICs, provide ... ICs, provide enabling benefits and capabilities to design and manufacture NEMS and MEMS Critical issues are to improve power and thermal management, circuitry and actuator/sensor integration, ... integrated circuit and micromachining silicon, germanium, and gallium arsenic technologies have been developed and used to manufacture ICs and motion microstructures (microscale actuators and sensors)...

Ngày tải lên: 17/10/2013, 11:15

... illustrated that NEMS and MEMS must be controlled Nano- and microelectromechanical systems augment... =0 assigned command and events ri(t) and system outputs yi(t), and the end-toend ... NANO- AND MICROELECTROMECHANICAL SYSTEMS 4.1. FUNDAMENTALS OF ELECTROMAGNETIC RADIATION AND ANTENNAS IN NANO- AND MICROSCALE ELECTROMECHANICAL SYSTEMS The electromagnetic power is generated and ... fields, electric and magnetic field vectors form separate and independent pairs. That is, E and D are not related to H and B, and vice versa. However, for time- varying electric and magnetic fields,...

Ngày tải lên: 19/10/2013, 18:15

... the stator and rotor circuitry dynamics. As the control and state variables we use the voltages applied to the stator (as and bs) and rotor (ar and br) windings, as well as the stator and rotor ... as bs , and i cs are the phase currents in the stator windings as, bs and cs; i i qs ds , and i os are the quadrature-, direct-, and zero-axis components of stator currents; ψ ψ as bs , and ψ cs ... qs ds , and ψ os are the quadrature-, direct-, and zero-axis components of stator flux linkages; u u ar br , and u cr are the voltages in the rotor windings ar, br and cr; u u qr dr , and u or...

Ngày tải lên: 19/10/2013, 18:15

... Trang 1CHAPTER 3 STRUCTURAL DESIGN, MODELING, AND SIMULATION 3.1 NANO- AND MICROELECTROMECHANICAL SYSTEMS3.1.1 Carbon Nanotubes and Nanodevices Carbon nanotubes, discovered in 1991, are ... 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 actuators-sensors ... vibration control and diagnostics, 2 health and structural integrity monitoring, 3 internal navigation systems, 4 earthquake-actuated safety systems, 5 seismic instrumentation: monitoring and detection,...

Ngày tải lên: 25/01/2014, 13:20

... 2 MATHEMATICAL MODELS AND DESIGN OF NANO- AND MICROELECTROMECHANICAL SYSTEMS 2.1. NANO- AND MICROELECTROMECHANICAL SYSTEMS ARCHITECTURE A large variety of nano- and microscale structures and devices, ... structures and devices, as well as NEMS and MEMS (systems integrate structures, devices, and subsystems), have been widely used, and a worldwide market for NEMS and MEMS and their applications will be ... and prototyping of NEMS and MEMS must be attacked using advanced theories. The systems analysis of NEMS and MEMS as systems integrates analysis and design of structures, devices and subsystems used, structural optimization...

Ngày tải lên: 25/01/2014, 13:20

... Schmidt and Sidebottom [1] , Ugural and Fenster [2] or Cook and Young [3] Many MEMS components and devices are built as thin structures, and therefore the corresponding stresses and strains ... bending-related stiffness matrix Elastic systems where load and deformation are linearly proportional are called linear, and a feature of linear systems is exemplified in Eq (1. 5), which ... Formally, Eqs (1. 5) and (1. 6) can be written in the form: where the matrix connecting the load vector on the left hand side to the deformation vector in the right hand side is called bending-related...

Ngày tải lên: 10/08/2014, 05:20

... applyingthe loads and and by calculating the corresponding tipdisplacements and through Castigliano’s displacement theorem.The strain energy collects contributions from bending and axial loading ... arecalculated as:and that the stiffnesses of Eqs (3.27) and (3.28) should be used when forcesneed to be calculated based on known displacements However, Eqs (3.29)are used as definition relationships and ... in-plane compliances are calculated by applying the loadsand as shown in Fig 3.12, and by calculating the correspondingdisplacements and Castigliano’s displacement theorem is appliedagain in...

Ngày tải lên: 10/08/2014, 05:20

... moment of inertia and Young’s modulus, the stiffnessdepends on and c, as shown in Fig 3.38 The stiffness decreases withand c increasing For the values of and the solution is c = 0.94, andtherefore ... stiffness is: where n is the number of beams and is the rotation stiffness of thecurved beam shown in Fig 3.41 and which is defined by a radius R, a centerangle and a constant rectangular cross-section ... of turnsknowing and x-Solution: The stiffness about the x-direction in this case can be found afterdetermining the reactions and When taking into account that the y-displacement and z-rotation...

Ngày tải lên: 10/08/2014, 05:20

... devices, and subsystems The research in integration and optimization (optimized architectures and structural optimization) of these subsystems has not been instituted and performed, and end-to-end ... NEMS and MEMS (nano- and microscale structures, devices, and sub -systems) , reduce the time and cost of deriving and leveraging the NEMS and MEMS technologies from concept to device/system, and ... invertebrate nervous systems 1.3 NANO- AND MICROELECTROMECHANICAL SYSTEMS Through biosystems analogy, a great variety of man-made electromechanical systems have been designed and made To analyze,...

Ngày tải lên: 25/01/2014, 13:20

... installation and systems mate, final assembly, and systems checkout and tests Overlap occurs between some MR&U and FACO activities, particularly if the aircraft must be taken apart for the repair and ... installation/subsystems mate, the remaining systems are installed, and the vertical tails and horizontal stabilisers and main landing gear access doors are also installed The electrical, hydraulic, and fuel ... forward and aft fuselage, the wings, and the tail) caused by moving FACO away from Fort Worth and to a UK site, thereby reducing work at Fort Worth and increasing the overhead rate there; and (4)...

Ngày tải lên: 15/03/2014, 21:20

... diverse environments You'll build, refine, and refactor a complete prototype; customize the user interface; add Help and Update features; and build, brand, and ship the finished software For every ... Eclipse 3.1's new RCP features and its extensive new tools for designing, coding, and packaging RCP applications Presents techniques for branding and customizing the look and feel of RCP applications ... electronic versions and/ or custom covers and content particular to your business, training goals, marketing focus, and branding interests For more information, please contact: U S Corporate and Government...

Ngày tải lên: 29/03/2014, 10:20

... education in the United States; conduct, and~ ~ publish reports on specialized analses of the meaning and significance of such, statistics; and review and report on education activities in foreign, ... "package" consisting of different types and sources of aid Such a package may result in funds from Federal and/ or non-Federal sources, and from grants, jobs, loans, and transfer benefits in various ... source, Federal and non-Federal aid, Federal aid only, and non-Federal aid only Figures and highlight several relationships from table 35 Percent of full-time freshmen 30 Scholarships and grants 25...

Ngày tải lên: 29/03/2014, 18:20

... and biochemical analysis, and for chemical production This chapter also recommends materials and mixer types for each application area References E.L Paul, V.A Atiemo-Oberg and S.M Kresta, Handbook ... miniature and ultraprecision engineering, and especially when thinking of electronics as the applications of controlled flows of electrons, it is natural and inevitable to extend the world of micro -and ... colleagues, research staff, and graduate students for their support and inspiration Parts of the published works of my former and current PhD students Wu Zhigang and Jiao Zhenjun have been included...

Ngày tải lên: 04/06/2014, 15:06

... Fabrication, characterization, and kinetic study of vertical single-crystalline CuO nanowires on Si substrates Shao-Liang Cheng*1 and Ming-Feng Chen1 Department of Chemical and Materials Engineering, ... studied as a p-type metal-oxide semiconductor It has a direct bandgap of about 1.2 to 2.0 eV and exhibits many excellent physical and chemical properties [4-6] Nanostructured CuO materials, especially ... field emission nanodevices, and chemical and gas sensors [7-10] Various growth techniques, such as the hydrothermal method [11], the thermal decomposition method [12], and the templating sol-gel...

Ngày tải lên: 21/06/2014, 17:20

... help and support during my candidature It has been a delight to work with the current and past members of Prof s group and ISML: Dr Shikha Jain for teaching me all the nanofabrication skills and ... of (a) 1-D, [2] (b) 2-D [3] and (c) 3-D [4] PCs Typical SEM images of (e) 1-D [6] and (f) 2-D [7] MCs Typical band structures of PCs [5] and MCs [6] are shown in (d) and (g), respectively 1! Fig ... candidate a rich and memorable one Thanks to all my friends for their help and encouragement I would like to thank my entire family and all my friends in China for all their support, faith and advice...

Ngày tải lên: 10/09/2015, 09:27

... the microlens array in imaging systems include auto-focus during image snapping [17] and advanced optical imaging systems for LCD display [18-21] In the design and development of confocal microscope ... optics and laser technology provides me the valuable ideas in both my experimental setup and theoretical study I would also like to thank Dr Lin Ying, Dr Chen Guoxin, Dr Wang Zengbo, Mr Zhou Yi and ... encouragement and constant support during my years of pursuing higher degree in National University of Singapore I also deeply appreciate my sisters and brother for their care and support Lastly,...

Ngày tải lên: 12/09/2015, 08:20

... the N and P drivers and the DUT, and, the C-V measurement of N and P-type SNW DUTs The I-V of Driver devices help in deciding the values of LOW and HIGH and the levels of PGn, PGp, NGn, and NGp ... summarizes and concludes the chapter 2.2 The Device Structure, and, 3D Process and Device Simulation 2.2.1 Necessity of 3D device structure Building a 3D process and device model is essential and necessary ... of On- and Off-current of the three devices A- with gate electrode height 20 nm and nitride spacer B- with gate electrode height 20 nm and no spacer Cwith surface gate electrode height nm and no...

Ngày tải lên: 12/09/2015, 11:29

... the lowest unoccupied band is the conduction band (CB) The energy spacing between these two bands is known as the bandgap energy (Eg) For conductors, the VB and CB overlap and the intrinsic conductivity ... Figure 1.2 Figure 1.2 Band structure evolution and actual structure for polypyrrole upon doping At zero doping level, the polymer is neutral and its band structure is that of a standard semiconductor ... metals), Semiconductors and Insulators The most frequently used mechanism to explain these conduction properties may be the band theory The highest occupied band is the valence band (VB), while the...

Ngày tải lên: 14/09/2015, 14:08

... into three bands under the influence of spin-orbit interactions and crystal-field effects Three bands splitted in valence band and thus transition from these bands dominated near-band-gap intrinsic ... nanoclusters, and ZnO:Cu and ZnO:Mn alloy nanoclusters were deliberately embedded in the ZnO and SiO2 matrices respectively Since the nanoclusters were softly landed on the ZnO or SiO2 films and it ... consisted of a-axis (112¯0) and (101¯0) and has equal number of Zn and O Zn (0001) is a basal plane and O (0001¯) caxis has slightly different electronic structure On the hand, O (0001¯) c-axis is...

Ngày tải lên: 04/10/2015, 10:24

... my endless efforts to contradict Dr Wong and Dr Moorthi have imparted lots of knowledge and experience in the projectrelated area and their understanding and encouragement during my hard times ... and mass sensitivity for peak 1, 2, and 119 Table Added mass and mass sensitivity of CNT resonator considering loaded mass and variational spring constant 123 Table Loaded mass and ... most viable candidate to produce NEMS devices of nanometer scale In order to understand the properties of CNTs and hence the CNTs based systems better, it is ideal to study the CNTs and the progression...

Ngày tải lên: 06/10/2015, 20:43