Dependence of the fused-silica etch rate on the etch mask opening diameter

Autor: Christoph Doering, Henning Fouckhardt, Christina Kimmle, Sandra Wolff
Rok vydání: 2013
Předmět:
Zdroj: Microelectronic Engineering. 112:10-13
ISSN: 0167-9317
DOI: 10.1016/j.mee.2013.05.006
Popis: Display Omitted Combination of thin hard and soft lithographic mask.Deep etched half spherical profiles in fused silica.Realization of different etch depth in only one etch step.Realization of a microscopic twin iris array module. We report on a technology to reach different etch depths in fused silica simultaneously by using different diameters of the openings in the etch mask. Usually, the etch rate is determined by the etch solution, the temperature, and the concentration of the etch solution as well as the material to be etched. We show that the etch rate will also depend on the diameter of the opening in the etch mask, if the diameter is
Databáze: OpenAIRE