By Xu Hou
In this thesis, the writer introduces a variety of bio-inspired clever nanochannel structures. a method for layout and education of novel synthetic responsive symmetric/asymmetric unmarried nanochannel platforms below a number of symmetric/asymmetric stimuli is gifted for the 1st time. The author’s examine paintings makes use of ion tune etching polymer nanochannels with varied shapes as examples to illustrate the feasibility of the layout method for construction novel synthetic practical nanochannels utilizing quite a few symmetric/asymmetric physicochemical ameliorations. the advance of those nanochannels and their capability purposes is a burgeoning new region of study, and a couple of intriguing breakthroughs could be expected within the close to destiny from the ideas and effects pronounced during this thesis. study into man made useful nanochannels maintains to force new advancements of assorted real-world purposes, resembling biosensors, strength conversion structures and nanofluidic units. The paintings during this thesis has ended in greater than 15 courses in high-profile journals.
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Additional info for Bio-inspired Asymmetric Design and Building of Biomimetic Smart Single Nanochannels
B Ionic current rectification ratio and the thermal gating ratio measured in electrolytes of different pH. Reproduced from Ref.  by permission of John Wiley & Sons Ltd. c A biomimetic asymmetric dual responsive single nanochannel system. d Ionic current rectification of the single nanochannel after asymmetric chemical modification at 2 V. Reprinted with the permission from Ref. . Copyright 2010 American Chemical Society very strong dependence of its I–V behavior on pH (Fig. 34a). At pH 8, the rectification direction was the same as for an unmodified channel.
G-quadruplex (G4) DNA was immobilized onto the inner surface of a single nanochannel, which underwent a potassium-responsive conformational change and then induces the change in the effective size at the narrowest point of the channel. The responsive ability of this system can be regulated by the stability of G-quadruplex structure through adjusting potassium concentration. 29b). Whereas Fig. 29 Ion responsive nanochannels. a Calcium induced voltage gating in a single conical nanochannel. 1 M KCl with 2 mM PBS buffer alone (black trace) and with varying calcium concentrations.
The inset shows the activities of Ca2+ and HPO42- ions inside the nanochannel with negative surface charges then rise above the solubility product Ksp of CaHPO4, allowing nanoprecipitation to occur. Reprinted by permission from Macmillan Publishers Ltd: Ref. , copyright 2008. b G-quadruplex DNA was immobilized onto the inner surface of a single nanochannel for a biomimetic potassium responsive nanochannel. 2, at 23 °C). Reprinted with the permission from Ref. . 3 Typical Examples of Responsive Single Nanopore/Nanochannel 39 Fig.
Bio-inspired Asymmetric Design and Building of Biomimetic Smart Single Nanochannels by Xu Hou