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Laurell Technologies WS-400 spin coater used to apply photoresist to the surface of a silicon wafer. Spin coating is a procedure used to deposit uniform thin films onto flat substrates. Usually a small amount of coating material in liquid form is applied on the center of the substrate, which is either spinning at low speed or not spinning at all.
A range of thicknesses can be achieved by spin coating. Most commonly the thicknesses range from 1-200 μm. The main properties that affect the thickness of the film are viscosity and spin speed. The more viscous the solvent the thicker the film will be and the faster the wafer is spun the thinner the film will be. By manipulating these two ...
It is necessary for a spin casting furnace to have a temperature controller, as there is an optimal range for each metal. For example, a particular zinc alloy is typically cast between 413 and 427 °C (775 and 801 °F), whereas it actually melts much lower around 260 °C (500 °F).
Spraying. The coating material is applied to the parts' surface using a spray gun. This can be done manually or in a fully automated spraying facility (this process is used for larger or unwieldy parts, also termed rack parts, as they are brought into the coating process on a rack). Dip-spinning. The parts get loaded into a basket.
Near retirement and worrying about your financial future? Check out the Decoding Retirement podcast . Truehold estimates consumers can expect to spend anywhere from $10,000 to $100,000 in age ...
Here are the biggest problems each generation has faced, based on a recent Fidelity survey, and how to correct it. The 401(k) has been around for 46 years, and in that time, it has become the ...
Hoda Kotb’s daughters Haley and Hope will unbox an equal amount of presents on Christmas morning while Jenna Bush Hager's kids get different amounts.
Superhydrophobic coatings have important applications in maritime industry. They can yield skin friction drag reduction for ship hulls, thus increasing fuel efficiency. Such a coating would allow ships to increase their speed or range while reducing fuel costs. They can also reduce corrosion and prevent marine organisms from growing on a ship's ...
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