title: Laminar flow used as "liquid etch mask" in wet chemical etching to generate glass microstructures with an improved aspect ratio.
abstract: A new method of anisotropic etching an amorphous bulk material is proposed in this paper. Laminar flow is employed in this method to mask the flow of an etchant and is termed as "liquid etch mask". Since this mask has the physical properties of a liquid, it brings several advantages that could not be achieved by any kind of other etch mask in the solid phase. As a consequence, the aspect ratio of the glass channel could be improved to approximately 1 while in an inexpensive and convenient manner.
authors: School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, P. R. China.
authors: Xuan
authors: X
authors: Mu
authors: Qionglin
authors: Q
authors: Liang
authors: Ping
authors: P
authors: Hu
authors: Kangning
authors: K
authors: Ren
authors: Yiming
authors: Y
authors: Wang
authors: Guoan
authors: G
authors: Luo
mesh_terms: D000431:Ethanol / Q000737:chemistry; D005898:Glass / Q000737:chemistry*; D008751:Methylene Blue / Q000737:chemistry; D055616:Microtechnology / Q000379:methods*
chemical_list: D000431:Ethanol; D008751:Methylene Blue