3methods for fabrication of superhydrophobic materials

... (Lithography) Galvanoformung (Electroforming) Abforming (Molding) The exact English meaning of LIGA is given in parenthesis This process involves X-ray irradiation, resist development, electroforming and ... not capable of making true 3D structures e.g free form surfaces and also limited in range of materials Mechanical machining is capable of making free form surfaces in wide range of materials Can ... of nanoquantum mechanical electron devices and their applications Classification of machining Micromachining is the basic technology for fabrication of micro-components of size in the range of...

Ngày tải lên: 21/06/2014, 02:20

... the spectrum of applications for microfabrication techniques The width and depth of most microfluidic channels fall in the range of 10-1000 µm, and this feature size is thus small for conventional ... will prove essential for the rapid development of these applications This chapter will discuss the fundamentals of laser ablation in the microfabrication of microfluidic materials After briefly ... other microfabrication processes become more applicable for the manufacture of microfluidics Roll-to-roll stamping, lamination, hot embossing, and injection molding of plastic components offer excellent...

Ngày tải lên: 21/06/2014, 02:20

... method of fabrication offers enormous flexibility in both the design of the microfluidic plumbing as well as the materials which are used to create it One example of a fairly advanced microfluidic ... Techniques for Fabrication of Micro and Nano Structures Laser micromachining of plastic laminates for microfluidics nearly always involves through-cutting of each layer CO2 laser systems not offer ... applications for microfluidics demand disposable cartridges for the liquid contacting elements of the system Disposable cartridges, in turn, demand extremely low cost materials and fabrication methods, often...

Ngày tải lên: 21/06/2014, 02:20

... Techniques for Fabrication of Micro and Nano Structures Fig Depth of tilting micro-trenches as a function of scan cycles (with permission for reproduction from American Institute of Physics Publishing) ... 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, pulse repetition rate, ... (Figure 12 (c)) Fig 12 Control of laser fluence by focus offset (with permission for reproduction from American Institute of Physics) A number of factors affect the quality of trenches In our study,...

Ngày tải lên: 21/06/2014, 02:20

... considered For successful implementation of OI, the Laser Ablation for Polymer Waveguide Fabrication 125 following are needed: materials that would be compatible with PCB manufacturing procedures; fabrication ... candidate Furthermore, for the fabrication of integrated mirrors, either in-plane or out -of- plane, laser ablation using an excimer laser for example, is a much suitable option for this due to its ... Micromachining Techniques for Fabrication of Micro and Nano Structures Chen, Y-T, Naessens, K., Baets, R., Liao, Y & Tseng, A (2005) Ablation of transparent materials using excimer lasers for photonic applications,...

Ngày tải lên: 21/06/2014, 02:20

... Journal of Materials Processing Technology (149) 50-57 Puertas, I., Luis, C J., (2004) A study of optimization of machining parameters for electrical discharge machining of boron carbide Materials ... micrographs of window A in Figure 4.5 b 156 Micromachining Techniques for Fabrication of Micro and Nano Structures Conclusion Micro ED milling is shown as a potential fabrication technique for functional ... parameters were used for fabrication The final product has the channel dimension of 0.1 mm Combination of micro ED milling and molding can be a suitable route for the mass replication of miniaturized...

Ngày tải lên: 21/06/2014, 02:20

... instead of using the recommended infeed to keep the tool wear low, especially for tough materials Ductile materials tend to form burrs at the edges of micro structures Depending on the resistance of ... edges but consisting of a softer material For steel e g spicular tools made of brass are suitable For microstructures e g made of PMMA or PTFE, wood can be used The disadvantage of this method is ... made of a wide variety of materials We acknowledge support by Deutsche Forschungsgemeinschaft and Open Access Publishing Fund of Karlsruhe Institute of Technology 180 Micromachining Techniques for...

Ngày tải lên: 21/06/2014, 02:20

... limit for SiO2 Results are shown in Fig 14 Fig 14 Deformation and stress for Geometry B 196 Micromachining Techniques for Fabrication of Micro and Nano Structures Next, Geometry C showed a deformation ... commercialized in the mid-1980’s For the rest of the 1980’s, in the absence of precision control software and hardware, AWJs were mainly used for the rough cutting of materials, particularly those ... Rodríguez for the preparation of the etching test masks for photolithography, Benito Nepomuceno for the oxidized silicon substrates preparation and Gaspar Casados for the SEM images of the structures...

Ngày tải lên: 21/06/2014, 02:20

... The advent of personal computing has led to the development of PC-based “smart” software programs for controlling the operations of most modern AWJ systems and a host of accessories for speeding ... quality of cuts The flexibility of PC programming incorporates the versatility of waterjet technology very well, and the integration of modern PC-based software and hardware takes full advantage of ... characteristics of a waterjet Note that the jet spreads with the distance it travels Therefore, the profile of the jet, the abrasive size distribution, the abrasive flow rate, and the uniformity of abrasive...

Ngày tải lên: 21/06/2014, 02:20

... Techniques for Fabrication of Micro and Nano Structures 4.7 Multi-nozzle platform The downsizing of an AWJ nozzle results in a reduction in the flow rate of the waterjet Depending on the size of the ... versatility of waterjet technology for low-cost micromanufacturing of components for medical implants/devices and microelectronics, for green energy production systems, and for the post-processing of ... striking area of diameter less than the tool diameter, i.e 200 µm, is of the order of 500 kJ/m2 4.3 Width of microchannels Columns of Table gives post process measured values of the width of the microchannels...

Ngày tải lên: 21/06/2014, 02:20

... interesting feature of this process is that the deposition of the micromechanical structures is performed before the gate oxidation 268 Micromachining Techniques for Fabrication of Micro and Nano ... of the wafer, which can be a PECVD layer and etching is performed through the wafer to produce, for example, membranes for pressure sensors, or mass/spring structures for accelerometers One of ... Technology Many of the technologies used in silicon sensors were developed for the IC industry, although the development of micromachining led to a new range of technologies and opportunities for new...

Ngày tải lên: 21/06/2014, 02:20

... the method of separation of variables However, in the more general case of three-dimensional form of equation (1) with boundary conditions (i) to (iv), the versatile numerical methods of finite ... shots for later analysis For dc operation mode, a stable current source was used, and both the input voltage and current were monitored for accurate determination of input power For RF mode of operation, ... nature of MEMS calls for consideration of many interacting physical phenomena, thus leading to involvement of many types of equations that are coupled weakly or strongly depending on the type of...

Ngày tải lên: 21/06/2014, 02:20

... (Lithography) Galvanoformung (Electroforming) Abforming (Molding) The exact English meaning of LIGA is given in parenthesis This process involves X-ray irradiation, resist development, electroforming and ... not capable of making true 3D structures e.g free form surfaces and also limited in range of materials Mechanical machining is capable of making free form surfaces in wide range of materials Can ... relatively young compared with other semiconductor fabrication processes One of the major challenges for all of the microfabrication and nanofabrication technologies is to downscale the feature...

Ngày tải lên: 27/06/2014, 01:20

... 2.6.7(a) of ACI 350R for the various bar sizes, exposure conditions, and grades of reinforcement Fig 2.1—Recommendations for increased reinforcing percentage parallel to bonded joints 2.2.10 Roofs ... applications for use should be thoroughly explored for each specific application of a sealant Refer to ACI 504R for additional information on joint sealants For satisfactory performance, a sealant ... Geomembrane materials This group of liner materials includes geomembranes consisting of flexible thermoplastic or thermoset polymeric materials or combinations thereof Many types of geomembranes...

Ngày tải lên: 24/10/2014, 21:58

... contact force fcn,ij normal component of contact force fct,ij tangential component of contact force fd,ij viscous contact damping force fdn,ij normal component of viscous contact damping force ... performed at the Supercomputing and Visualisation Unit of the National University of Singapore ii TABLE OF CONTENTS ACKNOWLEDGEMENTS i TABLE OF CONTENTS ii SUMMARY iv LIST OF TABLES vi LIST OF ... Pressure profiles along the conveying line for various values of Λ 116 (α = 0.16) and inlet gas velocity of (a) m s-1 and (b) m s-1 Figure 5.30 Solid fraction profiles for inlet gas velocity of m s-1...

Ngày tải lên: 14/09/2015, 17:46

... information: name of testing body; name of manufacturer of the material; date of supply of the materials and of tests; name or identification of the material; description of the material; density of the ... PROCEDURES FOR ACCEPTANCE OF FIRE-RETARDANT MATERIALS FOR THE CONSTRUCTION OF LIFEBOATS Application This test procedure should be used for the acceptance of fire-retardant and flame-resistant materials ... laminates should be prepared reinforced with glass fibre of any form with a thickness of mm and a minimum resin content of 40% by weight Alternatively, three specimens of the specific laminate system...

Ngày tải lên: 07/06/2016, 21:46

... resulting in fabrication of novel core-shell materials The objective of this work is therefore to study and perform the organic phase fabrication of core-shell materials for encapsulation of biomolecules ... use of an organic phase for fabrication of core-shell materials and encapsulation of biomolecules is rarely demonstrated Therefore, this PhD work involves the novel organic phase fabrication of ... Selection of Organic Solvent and Polymers for Organic Phase Fabrication of Core-Shell Materials Next, it is necessary to select an organic solvent for the organic phase fabrication of the core-shell materials...

Ngày tải lên: 11/09/2015, 10:15

Ngày tải lên: 29/01/2014, 14:39

... relatively low cost 318 One of the early applications of DNA for the formation of nanowires, in 1998, involved the metallization of dsDNA between two electrodes to form conductive silver nanowire ... first use of cytoskeletal proteins for nanotechnology was the utilization of actin filaments as templates for nanowire formation [26] Briefly, 7-nm actin filaments were formed by self-assembly of the ... of peptide nanostructures to form conductive nanowires Another key research direction for the fabrication of biological fibrils involves the use of peptide and hybrid–peptide building blocks for...

Ngày tải lên: 16/03/2014, 12:20

... routes appear promising for developing functional materials Geo-inspired materials The structure of natural materials can be a source of inspiration for the conception of novel materials Phyllosilicates ... Materials Chemistry [5, 11] or Materials Science for developing soft processing in advanced inorganic materials [12] or for preparing functional ceramics [13, 14] The interest for non-oxide materials ... appear to be important for either the synthesis of novel materials, the preparation of nanostructured particles for nanotechnologies or the elaboration of bio-inspired materials for applications in...

Ngày tải lên: 20/03/2014, 13:08