Please use this identifier to cite or link to this item: http://cybertesis.uni.edu.pe/handle/uni/17429
Title: Proton-fountain Electric-field-assisted Nanolithography (PEN): fabrication of polymer nanostructures that respond to chemical and electrical stimuli
Authors: La Rosa, Andres
Yan, Mingdi
Fernández, Rodolfo
Wang, Xiaohua
Zegarra, Elia
Keywords: Nanostructures;Electric-field-assisted Nanolithography (PEN)
Issue Date: Dec-2012
Publisher: Universidad Nacional de Ingeniería
Citation: La Rosa, A.; Yan, M.; Fernández, R.; Wang, X. & Zegarra, E. (2012). Proton-fountain Electric-field-assisted Nanolithography (PEN): fabrication of polymer nanostructures that respond to chemical and electrical stimuli. REVCIUNI, 15(1).
Series/Report no.: Volumen;15
Número;1
Abstract: The development of chemically functionalized materials, such that their physical properties can vary in response to external mechanical, chemical, or optical stimuli, offers potential applications in a wide range of fields, namely microfluidics, electronic memory devices, sensors and actuators. In particular, patterned structures built with stimuli-responsive polymer materials are attractive due to their inherent lower cost production and for building soft scaffolds that mimic closer natural bio-environments. In addition, harnessing the construction of patterns with nanoscale dimensions would not only a) allow building lab-on-a-chip devices that require minimal chemical reactants volumes, but also b) find applications iri the area of nanoelectronics far fabricating flexible, low-cost, and low-voltage-operation integrated logic circuits devices. To address these potential applications of stimuli-responsive polymer nanomaterials in the bio and nano-electronics arena, this article provides first a brief review of radiation and non-radiation based lithography methods used for fabricating nanopatterns. This introduction helps to put in context a more general description of the Proton-fountain Electricfield-assisted Nanolithography (PEN) technique, a recently introduced scanning-based method able to fabricate patterns of nanoscale dimensions using responsive polymer films. We also outline potential avenues for the outgrowth of PEN by replacing its current top-down fabrication approach with a bottom-up modality. The proposed outgrowth is to improve the fabrication speed and the lateral dimensions of the patterns. More specifically, we address the fact that, since PEN capitalizes on the reversible swelling-response of poly(4-vinylpyridine) (P4VP) films upan spatially-localized injection of protons (hydronium ions H30+), the diffusion of the positive charges inside the polymer film matrix limits the patterns lateral resolution. This shortcoming can be remediated by the integration of ultra-fast optical activation into the PEN technique in order to gain much finer control ·over the functionalized sample a rea where the polymer molecules are selectively attached to the substrate, which would allow implementing a diffusion free, nanometer resolution, self-assembly method for fabricating erasable polymer nanostructures.
URI: http://cybertesis.uni.edu.pe/handle/uni/17429
ISSN: 1813 – 3894
Rights: info:eu-repo/semantics/embargoedAccess
Appears in Collections:Vol. 15 Núm. 1 (2012)

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