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Leptat glass is a glass that has been etched using a patented acid process. Leptat takes its name from the Czech word meaning "to etch", because the technique was inspired by a Bohemian, Czech Republic (former Czechoslovakian) glass exhibit viewed at a past World's Fair in Osaka, Japan, and patented in the United States by Bernard E. Gruenke ...
Hydrofluoric acid [2] is most often used to etch glass in a special marker equipped with a tip formed by a bed with a round footprint that runs down a vertical surface. The flow intensity can be influenced by pressing the marker. After applying the liquid to the glass surface, a permanent impression is formed, which cannot be removed by cleaning.
Piranha solution, also known as piranha etch, is a mixture of sulfuric acid (H 2 SO 4) and hydrogen peroxide (H 2 O 2). The resulting mixture is used to clean organic residues off substrates , for example silicon wafers . [ 1 ]
Dampen a clean microfiber cloth with the mixture and apply it to the glass, wiping it down well for a streak-free finish. Avoid using paper or plush cloth towels to maintain a lint-free surface.
Provided the RCA clean is performed with high-purity chemicals and clean glassware, it results in a very clean wafer surface while the wafer is still submersed in water. The rinsing and drying steps must be performed correctly (e.g., with flowing water) since the surface can be easily recontaminated by organics and particulates floating on the ...
Etching tanks used to perform Piranha, hydrofluoric acid or RCA clean on 4-inch wafer batches at LAAS technological facility in Toulouse, France. Etching is used in microfabrication to chemically remove layers from the surface of a wafer during manufacturing. Etching is a critically important process module in fabrication, and every wafer ...
Chromic acid is an intermediate in chromium plating, and is also used in ceramic glazes, and colored glass. Because a solution of chromic acid in sulfuric acid (also known as a sulfochromic mixture or chromosulfuric acid ) is a powerful oxidizing agent , it can be used to clean laboratory glassware , particularly of otherwise insoluble organic ...
Cleaning the inside of your oven glass is easy but may require some elbow grease. “I like to mix a 1/2 cup of baking soda and water to make a paste—I also add a few drops of Dawn dish soap ...