Micro- and nanoprinting into solids using reaction-diffusion etching and hydrogel stamps.
Micropatterned hydrogel stamps soaked in appropriate chemical etchants can imprint various types of micro- and nanoarchitectures into metals, conductive oxides, semiconductors, glasses, and crystals. Localized etching is mediated by a reaction-diffusion process initiated from the stamp microfeatures and gives lateral resolution down to approximately 300 nm. The method is well suited for the rapid prototyping of small-scale devices including multilevel microfluidic systems and curvilinear optical elements.
Grzybowski
Bartosz A
BA
Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA. grzybor@northwestern.edu
Bishop
Kyle J M
KJ
D001152:Arsenicals / Q000737:chemistry; D004058:Diffusion; D005708:Gallium / Q000737:chemistry; D020100:Hydrogels / Q000737:chemistry*; D054802:Molecular Imprinting; D053758:Nanoparticles / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry; D017971:Tin Compounds / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry
D001152:Arsenicals; D020100:Hydrogels; D017971:Tin Compounds; C043055:gallium arsenide; C109984:indium tin oxide; D005708:Gallium; D015034:Zinc Oxide; D012825:Silicon