design and fabrication of scaffolds via solid free form fabrication

... XRD patterns of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB and (b) and (c) nanospheres synthesized using 1:5 ratio of Ag2C2O4 and PVP and 1:2 ratio of Ag2C2O4 and CTAB, respectively ... coefficients of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB, and (b) and (c) nanospheres synthesized using 1:5 ratio of Ag2C2O4 and PVP and 1:2 ratio of Ag2C2O4 and CTAB, respectively, ... crystallite sizes of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB and (b) and (c) nanospheres synthesized using 1:2 ratio of Ag2C2O4 and CTAB and 1:5 ratio of Ag2C2O4 and PVP, respectively,...

Ngày tải lên: 22/06/2014, 01:20

... any SOFC system, the performance of the INER SOFC system is dependent not only on the design and operating conditions of the fuel cell stack, but also on the design and operating conditions of ... afterburner, gas reformer and heat exchanger play particularly crucial roles in determining the SOFC system performance The detailed designs of each of these components in the INER SOFC system are ... SOFC BOP system (S/C=1.7, O/C=0.3, fuel utilization = 64.2%, electrical conversion efficiency = 44%) Design of SOFC BOP components The BOP components of a SOFC system account for between 50% and...

Ngày tải lên: 05/09/2013, 16:10

... State of America, 1998 [2] R Mehran, CAD of Microstrip Filters considering dispersion loss and discontinuity effects, IEEE Trans MTT-27, Mar (1979) 239 [3] R Mehran, A method of analysis and design ... analysis and design of microstrip directional couplers considering dispersion and discontinuity effects, Proc of the 1970 Informational Symposium on Computer-Aided Design of the Electrics for ... Thanh Thuy, Pham Van Thanh, Nguyen Anh Tuan, Bach Gia Duong, Research, Design And Fabrication Of The 45W And The 200W, L-Band Power Amplifier Using The Modern Microstrip Technology For Application...

Ngày tải lên: 22/03/2014, 11:20

... Manh Quan,”The Study ,design and fabrication of low noise and high gain Kuband LNA for satellite communication”master thesis 2013,University Pari-SUD 11,Universityof Engineering and Technology [6] ... system -Study about delta modulation -Design and fabricate successfully VCO circuit in VHF band and delta modulate circuit TABLE OF CONTENTS List of Figures List of Table ABBREVATIONS BJT Bipolar ... objectives and structure In this thesis,I will clarify the roles and the need of a information digital transmitter in VHF band Study the function of each block in a transmitter system and especially...

Ngày tải lên: 27/05/2014, 20:57

... analysis of the nanosensor probe by performing a scan on a standard Figure SEM images of a an uncoated nanofiber and b a gold-coated nanofiber sample, e.g., a Fischer pattern The standard sample ... to evaporate onto the tapered side of the fiber tip to form a thin coating The nanoaperture was formed Figure Fabrication of nanofibers by laser pulling Page of through shadowed evaporation as ... one of the more potent carcinogens among PAHs and is a fundamental indicator of exposure and carcinogenic activity of all PAHs In order to facilitate the study of intracellular dynamics of benzo...

Ngày tải lên: 21/06/2014, 08:20

... set of masks  Minimum dimensions of masks determine transistor size (and hence speed, cost, and power)  36 N-WELL PROCESS  MOS Layers in an n-well process  Top view of FET pattern 37 DESIGNING ... N-DIFFUSION (CONT.)  Strip off oxide to complete patterning step n+ n+ n+ n well p substrate 27 P-DIFFUSION  Similar set of steps form p+ diffusion regions for pMOS source and drain and substrate contact ... the dimensions and separation rules dictated by the process fabrication facility 33 SUMMARY OF TERMINOLOGY (CONT.) 34 LECTURE 03: CMOS FABRICATION Fabricating One Inverter Layout & Design Rule Check...

Ngày tải lên: 29/07/2014, 16:21

... monomers 91 5.2.2 Fabrication of YSZ pellets and in-situ solid state polymerization 91 5.2.3 Fabrication of the sintered porous YSZ pellets via carbonization and incineration steps ... selectivity of carbon membrane derived from mPy with and without CTAB (heat rate of °C/min and dwelling time of hrs) 291 Table 12-2: Tabulation of permeability and selectivity of carbon ... leading to the formation of embedded chain assemblies of polyacrylamide; and removing the polymer via carbonization and calcination This in-situ poreforming strategy grants less tortuous and denser...

Ngày tải lên: 09/09/2015, 17:54

... 5.2.2 5.2.3 5.2.4 5.3 Microfabrication Process of Hollow Microneedle Array 115 Microfabrication Process of Glass 118 Combination Process of Isotropic Etching and Deep Etching 119 ... etching of outside silicon to achieve the profiles of microneedles With different mask designs, the different profiles of microneedles were achieved 29 Chapter Literature Review of Microfabricated ... fracture toughness of skin Gp puncture fracture roughness H length of the cross-section of a pyramidal structure I moment of inertia xvi List of Symbols L length of needle Ld the length of diffuser...

Ngày tải lên: 14/09/2015, 11:17

... DESIGN AND FABRICATION OF SUPERJUNCTION POWER MOSFET DEVICES CHEN YU (M.Eng., Xi’an Jiaotong University, P.R.China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... sacrificial materials and etchants for the formation of the vertically graded oxide sidewall 68 Table 3.3: Summary of device dimensions and performance parameters for 80V, 120V and 180V trench gate ... steps of the partial oxide platform formation: (a) Oxide/ Nitride/Oxide triple hard mask formation and 1st trench etch, (b) pad Oxide and Nitride deposition, (c) Nitride anisotropic etching and...

Ngày tải lên: 14/09/2015, 14:12

... throughput and integration with other microfluidic devices The main focus of the research in this thesis is on the design and fabrication of microfluidic devices for performing immunoassays and DNA ... main focus of the research in this thesis was on the design and fabrication of microfluidic devices for performing immunoassays and DNA hybridisation assays It was known that current microfluidic ... aims and the corresponding research designs and methods are presented in the following sections 3.2 Three specific aims 3.2.1 Specific aim #1: Design and fabrication of microfluidic device Design...

Ngày tải lên: 30/09/2015, 06:04

... lattice constant of a = 5.653 ˚ A The electronic band structure of GaAs is shown in figure 1.2 From the band structure, the smallest bandgap between the valence band and conduction band occurs at ... 1.3 shows a plot of bandgap versus the lattice constant of common III-V semiconductor materials This provides designers with a degree of freedom in the types and combinations of materials that ... [50] 1.6 Motivation and objective of the thesis The goal of this thesis is to design and fabricate 3D nanostructures, QDs and QRs on III-V compound semiconductors The fabrication of the 3D nanostructures...

Ngày tải lên: 30/09/2015, 06:04

... flat passband, equal ripple passband or equal ripple in both passband and stopband The choice of the type of the response and parameters of the low-pass prototype like ripple level, number of order ... separate the complete band of radar signal into sub-bands This chapter is arranged to describe the design, fabrication and measurement of a coupled microstrip open-loop resonators bandpass filter using ... coefficient for designing the filter After fabrication of the filter, in the last section, measurement performance of the filter is presented and discussed 3.1 Introduction to design of microwave...

Ngày tải lên: 04/10/2015, 10:26

... Inc [6] Mohamed Gad-el-Hak and others, “MEMS: Design and Fabrication , © 2006 by Taylor & Francis Group, LLC [7] Mark J.Jackson, Microfabrication and Nanomanufacturing, © 2006 by Taylor & Francis ... Trương Hữu Lý, Nguyễn Ngọc Việt, Design and simulation for optimal structure of cross type capacitive acceleration MEMS sensor, International journal of mathematics and physical sciences research, ... Sensors and NEMS/MEMS, in BioNanoFluidic MEMS 2008, Springer [5] Stephen Beeby, G.E., Michael Kraft, Neil White, MEMS Mechanical Sensors 2004, Artech House, Inc [6] Mohamed Gad-el-Hak and others,...

Ngày tải lên: 08/06/2016, 07:13

... areas of cost and capacity rather than performance There are two components of disk performance: transfer bandwidth and access time Although both of these factors are improving, the rate of improvement ... disk and in terms of how much of the data written to the log they represent More than 99% of the live data on disk consists of file data blocks and indirect blocks However, about 13% of the information ... us to understand the effects of random access patterns and locality, both of which can be exploited to reduce the cost of cleaning The simulator models a file system as a fixed number of 4-kbyte...

Ngày tải lên: 12/09/2012, 15:05

... Instead we must compromise and accept a more gradual cutoff between passband and stopband, as well as specify a transition band between the passband and stopband The design is based on magnitude ... passband, the magnitude response has a peak deviation dp and in the stopband, it has a maximum deviation ds The frequencies !p and !s are the passband edge (cut-off) frequency and the stopband ... Magnitude response of bandpass filter with narrow bandwidth 188 DESIGN AND IMPLEMENTATION OF FIR FILTERS where !a and !b are the lower and upper cut-off frequencies, respectively The bandwidth is the...

Ngày tải lên: 23/10/2013, 22:15

... Head of School, School of Information Technology and Electrical Engineering, University of Queensland, St Lucia, Qld, 4072 Dear Professor Simon Kaplan, In accordance with the requirements of the ... calculate the speed and position of the rotor The encoder pulses and the measured currents drawn by the induction motor form the feedback portion of the design Hence, the major aim of this thesis ... and turn-off times associated with any type of switch, the design requires the inclusion of slight time delays when the MOSFETs are switching A dead band is the time delay between switching off...

Ngày tải lên: 27/10/2013, 23:15

... methods and experimental results of two fabricated accelerometers Major parameters of the sensor are measured Experimental results point out some design issues such as spring design and needs of offset ... divided by the gain of front end stage, and are negligible There are several different type of noise involved: thermal noise of MOS devices, flicker noise of MOS devices, and shot noise of biasing diodes ... Simulation results of the frequency responds compared with experimental results proofmass of 0.5µg, resonant frequency 8kHz, and Q of Vfb_low is 3V and Vfb_high is 15V It’s found that for Q of 3, compensation...

Ngày tải lên: 27/10/2013, 23:15

... concept of impulse-invariant design 257 DESIGN OF IIR FILTERS The impulse-invariant design is usually not performed directly in the form of (6.3.5) In practice, the transfer function of an analog ... frequency range of stopband is < F < Ws, the passband is Wp < F < 1, and Wp > Ws For bandpass and bandstop filters, Wp and Ws are two-element vectors that specify the transition bandages, with ... such as the filter type, passband and stopband frequency ranges, passband ripple, and stopband attenuation We then use MATLAB to design the filter and simulate its performance After the simulation...

Ngày tải lên: 28/10/2013, 05:15

... their production and use’.85 As informatics shifts from the study of information systems to the study of design of services, 86 and networks of information and communication, design itself becomes ... between members of the public and representatives of official bodies, and on how discourses and local practitioners influence and recreate participation in and design of services and new technology ... teaching how to find information in electronic databases and on the Internet, criticism and evaluations of sources, and production of homepages and information management The job of a librarian is...

Ngày tải lên: 04/11/2013, 20:15

... of interior span = 0.45 *369 on 3m strip = 55.4KNm Analysis of flat slab Analysis of flat slab DESIGN FOR BENDING INTERNAL PANELS • columns and middle strips should be designed to withstand design ... smaller and simpler pieces (elements) whose behaviour can be formulated • E.g of software includes SAFE, ADAPT, etc • results includes – moment and shear envelopes – contour of structural deformation ... to the centre of building Typical floor plan of Compass the Elizabeth Design Considerations Design Considerations OPTIMISATION OF STRUCTURAL LAYOUT PLAN • the sizes of vertical and structural...

Ngày tải lên: 12/12/2013, 14:15