TY - JOUR AU1 - Jurcik, Benjamin J. AU2 - Brock, J. R. AU3 - Trachtenberg, Isaac AB - A novel etching system termed aerosol jet etching (AJE) is described and used to etch silicon dioxide films. The method combines the directionality of dry etching with the selectivity of wet etching. Contrary to most etching processes, in AJE the etch rate decreases with increasing substrate temperature, indicating that the residence time of etchant on the substrate can be a rate determining factor. The anisotropy of the etching process is improved by decreasing the nozzle exit to substrate distance, . For a given nozzle diameter, , no undercutting of the mask is apparent so long as the ratio . TI - Anisotropic Etching of SiO2 with a 38.2 Weight Percent Hydrofluoric Acid Aerosol JF - Journal of the Electrochemical Society DO - 10.1149/1.2085939 DA - 1991-07-01 UR - https://www.deepdyve.com/lp/iop-publishing/anisotropic-etching-of-sio2-with-a-38-2-weight-percent-hydrofluoric-4QFkYNPMDQ SP - 2141 EP - 2145 VL - 138 IS - 7 DP - DeepDyve ER -