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Kelvin Bridge
Kelvin Bridge

... Plasma etching systems have been developed that can effectively etch silicon, silicon dioxide, silicon nitride, aluminium, gold, glass, etc. The barrel or cylindrical, and the parallel plate or planar are the two kinds of plasma etching reactor systems are generally used. The typical reactor consist ...
Stud bump bonding
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... Example: Purple plague in Ag-Al interfaces A gold-aluminium intermetallic is an intermetallic compound of gold and aluminium that occurs at contacts between the two metals. These intermetallics have different properties than the individual metals which can cause problems in wire bonding in microelec ...
Introduction to Piezoelectric Accelerometers
Introduction to Piezoelectric Accelerometers

... frequency range, this structure approximately obeys Newton's law of motion, F=ma. Therefore, the total amount of accumulated charge is proportional to the applied force, and the applied force is proportional to acceleration. Electrodes collect and wires transmit the charge to a signal conditioner th ...
Science! - WhiteHouseCurriculum
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... Understand how to measure forces and identify the direction in which they act. 2a Understand the forces of attraction & repulsion between magnets. 2d Understand that when objects are pulled or pushed an opposing pull or push can be felt. Breadth of study: 1a Look at a range of domestic & environment ...
Interrelation of work function and surface stability: the case of BaAl4
Interrelation of work function and surface stability: the case of BaAl4

... These compare favorably with calculated work functions of bcc-barium [2.36 eV (100) and 2.27 eV (111)] and fccaluminum [4.34 eV (100) and 4.17 eV (111)]. The huge (> 2 eV) variation in the (001) surface work function can be (qualitatively) explained from the difference in the atomic electronegativit ...
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Hard Materials with Functionally Designed Mesostructure

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downey_poster - SURF-IT Summer Research
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... to surfaces. Utilization of conductive coatings or conductive materials can minimize the attraction of uncharged fine particles to charged surface regions; however the use of conducting surfaces does not eliminate static-electric forces between particles carr ying charge and those conductive surface ...
ORS 2017 Annual Meeting Poster No.0397
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... the surface roughness from 300 nm with TiO2 to around 700 nm. The surface roughness plays an important role during cell attachment, proliferation and differentiation. Surface roughness between 0.5 and 1.5 µm, as the presented ones, has shown improved cell adhesion [2]. XPS results showed an increase ...
Adhesion coated slides are made of extra white glass
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... A wide variety of materials, including metals, chemical compopunds and ceramics, can be applied using screen printing (e.g. in sensor technology). Screen printing begins with the production of a stencil, which is a flat, flexible plate with solid and open areas. The stencil has a fine-mesh screen as ...
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... manufacturing technology that enables the development of electromechanical systems using batch fabrication techniques similar to those used in integrated circuit (IC) design. They can range in size from micrometers to millimeters MEMS integrate mechanical elements, sensors, actuators and electronics ...
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Prezentacja programu PowerPoint
Prezentacja programu PowerPoint

... In casting the material to be deposited is dissolved in a solvent and then applied to the substrate by spraying or spinning. Once the solvent is evaporated, a thin film of the material remains on the substrate. This is particularly useful for polymer materials, which may be easily dissolved in organ ...
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Devin G. Barrett  Messersmith Lab Department of Biomedical Engineering
Devin G. Barrett Messersmith Lab Department of Biomedical Engineering

... zones, the adhesives employed by mussels are extremely robust and able to function under water. The proteins that compose these permanent anchors are especially enriched in metal ions and DOPA, a catecholic amino acid. While the presence of metal ions has been largely underappreciated, DOPA is well- ...
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Synthetic setae



Synthetic setae emulate the setae found on the toes of a gecko and scientific research in this area is driven towards the development of dry adhesives. Geckos have no difficulty mastering vertical walls and are apparently capable of adhering themselves to just about any surface. The 5-toed feet of a gecko are covered with elastic hairs called setae and the end of these hairs are split into nanoscale structures called spatulae (because of their resemblance to actual spatulas). The sheer abundance and proximity to the surface of these spatulae make it sufficient for van der Waals forces alone to provide the required adhesive strength. Following the discovery of the gecko’s adhesion mechanism in 2002, which is based on van der Waals forces, biomimetic adhesives have become the topic of a major research effort. These developments are poised to yield families of novel adhesive materials with superior properties which are likely to find uses in industries ranging from defence and nanotechnology to healthcare and sport.
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