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Air nanobubbles and nanopancakes were investigated in situ by both tapping mode atomic force microscopy (TM AFM) and atomic force nanolithography techniques employing bovine serum albumin (BSA) film supported by highly oriented pyrolytic graphite (HOPG). The BSA denaturation induced by the water-to-ethanol exchange served for conservation of nanobubble and nanopancake sites appearing as imprints in BSA film left by gaseous cavities formerly present on the interface in the aqueous environment. Once the BSA film was gently removed by the nanoshaving technique applied in ethanol, a clean basal plane HOPG area with well-defined dimensions was regenerated. The subsequent reverse ethanol-to-water exchange led to the re-formation of nanopancakes specifically at the nanoshaved area. Our approach paves the way for the study of gaseous nanostructures with defined dimensions, formed at solid-liquid interface under controlled conditions. Copyright © 2012 Elsevier B.V. All rights reserved.


Viliam Kolivoška, Miroslav Gál, Magdaléna Hromadová, Stěpánka Lachmanová, Hana Tarábková, Pavel Janda, Lubomír Pospíšil, Andrea Morovská Turoňová. Bovine serum albumin film as a template for controlled nanopancake and nanobubble formation: in situ atomic force microscopy and nanolithography study. Colloids and surfaces. B, Biointerfaces. 2012 Jun 1;94:213-9

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PMID: 22341519

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