fabrication of mems and nems

... materials. and 4) The formation of proteinaceous micro and nanospheres. Microwave (MW) MW dielectric radiation is used mostly for the preparation of nanometals, nanometal oxides, and nanoparticles of ... Sonoelectrochemistry, and RAPET) for the Fabrication of Nanomaterials and Their Applications Aharon Gedanken, Kanbar Laboratory for Nanomaterials at the Bar-Ilan University Center for Advanced Materials and ... interactions with the substrate and cannot be removed by washing. We can coat this way surfaces of polymers, ceramics, metals, glasses, textiles, and carbon bodies. 3) Insertion of nanomaterials into...

Ngày tải lên: 11/06/2014, 12:29

... (MEMS) . MEMS usually consist of three major parts: sensors, actuators, and an associate electronic circuitry that acts as the brain and controller of the whole system. There are two types of ... and methods of micro/nano fabrications from esteemed researchers and scientists. The book consists of 13 chapters. The first two chapters demonstrate fabrication of several micro and nano devices ... few reports of the fabrication of nano-structured materials, nano devices, and hierarchical nano-sized patterns with a 100 nm distance using a focused ion beam (FIB). Fabrication of graphene...

Ngày tải lên: 21/06/2014, 02:20

... Microfluidics falls into an intermediate range within the spectrum of applications for microfabrication techniques. The width and depth of most microfluidic channels fall in the range of 10-1000 ... of 10 kHz and 3.0 W at repetition rate of 20 kHz, and that of the 266 nm laser was 0.5 W at repetition rate of 5 kHz. The stage was moved up and down to adjust the z-axis to focus and de-focus ... million, laser microfabrication offers an excellent balance between speed, cost, and accuracy for microfluidics. Laser micromachining is also unmatched in the breadth of different of materials that...

Ngày tải lên: 21/06/2014, 02:20

... construction of microfluidic cartridges from a series of laser-cut plastic laminates which are aligned and bonded together. This method of fabrication offers enormous flexibility in both the design of ... type of machining as a result of their much lower cost and ease of use as compared to UV laser systems. 6. Conclusion This chapter discusses the fundamentals of laser ablation in the microfabrication ... comparison of Nd:YAG 266 nm and 355 nm laser ablation efficiencies to sapphire, silicon and Pyrex with laser fluence larger than 10 J/cm 2 . Micromachining Techniques for Fabrication of Micro and...

Ngày tải lên: 21/06/2014, 02:20

... Fig. 14. SEM images of trenches laser micromachined at different focus offset planes: (a) small offset of 300 μm; (b) optimal offset of 450 μm; (c) large offset of 600 μm. The pulse energy, ... expanded and collimated beam was guided by several laser mirrors and focused onto a piece of GaN-on-sapphire sample (emission wavelength = 470 nm, thickness of GaN = 3 μm and thickness of sapphire ... point of sapphire and GaN, which is in the range from 2040 °C to 2500 °C. Fig. 7. FE-SEM image of a GaN/sapphire wafer after laser micromachining, the interface of GaN and sapphire and the...

Ngày tải lên: 21/06/2014, 02:20

... Gaussian beam profile, (b) overlapping of Gaussian profile to generate ‘top-hat’, and (c) 'Top-hat' beam profile. Micromachining Techniques for Fabrication of Micro and Nano Structures ... cost and speed of excimer laser could be an issue from the production point of view at this stage of the deployment, other lasers such as UV Nd:YAG and CO 2 can offer both prototyping and mass ... state of the art and new opportunities, Journal of Materials Processing Technology, Vol.149, No.1-3, pp. 2-17. Offrein, B.J. (2008). Optical interconnects and nanophotonics, Proceedings of IEEE/LEOS...

Ngày tải lên: 21/06/2014, 02:20

... Milling for Microfabrication 153 a) b) Fig. 4.3. Tool-electrode dressing by WEDG: (a) picture during WEDG and (b) SEM image of tool-electrode after dressing 4.2 Fabrication of micro mold ... 164 number of advantages like reduced costs due to handling of smaller amounts of liquid, less storage and disposal costs, no hygienic problems due to bacterial contamination and less cleaning ... transferred to Micromachining Techniques for Fabrication of Micro and Nano Structures 168 Fig. 14. Faults of adhesion and uniformity of coatings. It is obvious that the price for micro...

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 27/06/2014, 01:20

... consists of several steps such as specifications of MEMS device, design, modeling to evaluate performance, fabrication and testing. Reviews of the modeling and test results enable optimization of ... piezoelectric MEMS inkjet has the advantages of lower power consumption, lower voltage operation and relatively larger driving force. Based on the primary design and fabrication of piezoelectric MEMS ... displacement of PIPH actuator membrane and its width at applied voltage of 10V. Both actuator membranes with PZT thickness of 0.5 um and 1 um exhibited the similar values of maximum displacement and...

Ngày tải lên: 10/04/2013, 13:48

Ngày tải lên: 27/07/2014, 22:21

... 200W 200W VNU Journal of Science, Mathematics - Physics 25 (2009) 185-189 185 Research, design and fabrication of a high-power combiner using Wilkinson bridge of L-band Dang Thi Thanh Thuy 1, *, ... 1 Faculty of Physics, College of Science, Vietnam National University Hanoi 2 Research Center Electronics and Telecommunication, College of Technology, VNU 3 Department of Science and Technology, ... Design And Fabrication Of The 45W And The 200W, L-Band Power Amplifier Using The Modern Microstrip Technology For Application In The National Sovereignty Identification Coding System, Journal of...

Ngày tải lên: 22/03/2014, 11:20

... value of capacitors and coils to satisfy stability condition of phase and 33 3.5.2 Data Signaling Rates The CVSD converter shall be capable of operating at 16 and 32 kbps. 3.5.3 Input and Output ... Quan,”The Study,design and fabrication of low noise and high gain Ku- band LNA for satellite communication”master thesis 2013,University Pari-SUD 11,Universityof Engineering and Technology. [6] ... of the slopevoltage out of the syllabic filter.the encoder and decoder have identical characteristics except for the comparator and filter functions. The CVSD decoder consists of the input band...

Ngày tải lên: 27/05/2014, 20:57

... photodiodes have a cutoff wavelength of 4.3 àm. A current responsivity of 0.48 A/W and a peak detectivity of 1.75 ì 10 11 cmHz ẵ /W were measured. The quantum efficiency of the device at 3.6 ... quality [13]. As InAs and GaSb have no common atoms and both arsenic and antimony's sticking coefficients are less than 1, two types of interfaces may be formed, the GaAs-like and the InSb-like, ... cost, lattice-matched, and chemically, mechanically, and optically well suited. Thus, the fabrication of large-format MCT arrays with homogeneous performances becomes more and more challenging,...

Ngày tải lên: 18/06/2014, 22:20

... photodiodes have a cutoff wavelength of 4.3 àm. A current responsivity of 0.48 A/W and a peak detectivity of 1.75 ì 10 11 cmHz ẵ /W were measured. The quantum efficiency of the device at 3.6 ... quality [13]. As InAs and GaSb have no common atoms and both arsenic and antimony's sticking coefficients are less than 1, two types of interfaces may be formed, the GaAs-like and the InSb-like, ... responsivity of 0.48 A/W was measured for the same device, and it has a blackbody detectivity of 4.54 ì 10 10 cmHz ẵ /W. The InAs/GaSb SL detectors have a 50% cutoff wavelength of 4.3 àm at...

Ngày tải lên: 20/06/2014, 04:20