title: Dense arrays of uniform submicron pores in silicon and their applications.
abstract: We report a versatile particle-based route to dense arrays of parallel submicron pores with high aspect ratio in silicon and explore the application of these arrays in sensors, optics, and polymer micropatterning. Polystyrene (PS) spheres are convectively assembled on gold-coated silicon wafers and sputter-etched, resulting in well-defined gold disc arrays with excellent long-range order. The gold discs act as catalysts in metal-assisted chemical etching, yielding uniform pores with straight walls, flat bottoms, and high aspect ratio. The resulting pore arrays can be used as robust antireflective surfaces, in biosensing applications, and as templates for polymer replica molding.
authors.affiliation: INM-Leibniz Institute for New Materials , Campus D2 2, 66123, Saarbrücken, Germany.
authors.forename: Daniel
authors.initials: D
authors.lastname: Brodoceanu
authors.forename: Roey
authors.initials: R
authors.lastname: Elnathan
authors.forename: Beatriz
authors.initials: B
authors.lastname: Prieto-Simón
authors.forename: Bahman
authors.initials: B
authors.lastname: Delalat
authors.forename: Taryn
authors.initials: T
authors.lastname: Guinan
authors.forename: Elmar
authors.initials: E
authors.lastname: Kroner
authors.forename: Nicolas H
authors.initials: NH
authors.lastname: Voelcker
authors.forename: Tobias
authors.initials: T
authors.lastname: Kraus
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation; D006046:Gold / Q000737:chemistry; D036103:Nanotechnology; D011108:Polymers / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D011108:Polymers; D011137:Polystyrenes; D006046:Gold; D012825:Silicon
keywords: SALDI substrates; antireflective surfaces; colloidal lithography; metal-assisted chemical etching; polymer fiber arrays; porous silicon