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Title: Flexible fabrication and applications of polymer nanochannels and nanoslits
Authors: Rattikan Chantiwas
Sunggook Park
Steven A. Soper
Byoung Choul Kim
Shuichi Takayama
Vijaya Sunkara
Hyundoo Hwang
Yoon Kyoung Cho
Louisiana State University
University Michigan Ann Arbor
Ulsan National Institute of Science and Technology
Mahidol University
Keywords: Chemistry
Issue Date: 1-Jul-2011
Citation: Chemical Society Reviews. Vol.40, No.7 (2011), 3677-3702
Abstract: Fluidic devices that employ nanoscale structures ( < 100 nm in one or two dimensions, slits or channels, respectively) are generating great interest due to the unique properties afforded by this size domain compared to their micro-scale counterparts. Examples of interesting nanoscale phenomena include the ability to preconcentrate ionic species at extremely high levels due to ion selective migration, unique molecular separation modalities, confined environments to allow biopolymer stretching and elongation and solid-phase bioreactions that are not constrained by mass transport artifacts. Indeed, many examples in the literature have demonstrated these unique opportunities, although predominately using glass, fused silica or silicon as the substrate material. Polymer microfluidics has established itself as an alternative to glass, fused silica, or silicon-based fluidic devices. The primary advantages arising from the use of polymers are the diverse fabrication protocols that can be used to produce the desired structures, the extensive array of physiochemical properties associated with different polymeric materials, and the simple and robust modification strategies that can be employed to alter the substrate's surface chemistry. However, while the strengths of polymer microfluidics is currently being realized, the evolution of polymer-based nanofluidics has only recently been reported. In this critical review, the opportunities afforded by polymer-based nanofluidics will be discussed using both elastomeric and thermoplastic materials. In particular, various fabrication modalities will be discussed along with the nanometre size domains that they can achieve for both elastomer and thermoplastic materials. Different pol ymer substrates that can be used for nanofluidics will be presented along with comparisons to inorganic nanodevices and the consequences of material differences on the fabrication and operation of nanofluidic devices (257 references). © 2011 The Royal Society of Chemistry.
ISSN: 14604744
Appears in Collections:Scopus 2011-2015

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