NDLI: Rapid fabrication of nanoporous membrane arrays and single-pore membranes from parylene C

Content Provider	Royal Society of Chemistry (RSC)
Author	Baker, Lane A. Thakar, Rahul Morris, Celeste A. Zakeri, Rashid
Copyright Year	2012
Abstract	We report the fabrication of highly ordered arrays of uniformly sized nanopores from polymer vapor deposition and extend this straightforward approach to the production of single-pore membranes. The fabrication protocol for single-pore membranes and porous membrane arrays (PMAs) offers precise control over pore size and can be readily tailored for batch fabrication. PMAs were utilized as templates to construct both epoxy resin and silica micro/nanostructures that replicate pore geometries. As established from silica micro/nanostructures and electron microscopy, pore sizes were tuned from tens of micrometers to as low as ∼100 nm for PMAs and 40 nm for single-pore membranes. Ion transport of redox molecules and non-redox active ions through hydrophobic porous membranes was investigated with scanning electrochemical microscopy (SECM) and scanning ion conductance microscopy (SICM), respectively. In addition, the application of PMAs toward spatial patterning of polystyrene microspheres deposited from a colloidal solution onto the membrane surface was demonstrated. This research identifies a unique strategy in nanopore fabrication. The method described to produce PMAs provides an effective and inexpensive process for production of a well-ordered three-dimensional architecture that typically requires complex instrumentation, elaborate lithographic procedures or lengthy processing techniques.
Starting Page	4353
Ending Page	4359
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	4
Issue Number	12
Journal	Analytical Methods
DOI	10.1039/c2ay26074c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Scanning electrochemical microscopy Transmission electron microscopy Epoxy Resin Optical microscope Redox Ion Polymer Hydrophobe Nanopore Polystyrene Silicon dioxide
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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