Investigation on the Electrochemical Manipulation of Bio-Molecules in Glass Nanofluidic Channels

Investigation on the Electrochemical Manipulation of Bio-Molecules in Glass Nanofluidic Channels

Kun LiuMing Hao Donghui Meng Xujie Wan Songwen Xiao Songgang Sun Dongyang Wang Dechun Ba

School of Mechanical Engineering and Automation, Northeastern University, 3-11 Wenhua Rd., Shenyang, China, 110004, China

Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China

Beijing Institute of Aviation Materials, China Aviation Industry Group Co.LTD. , Beijing 100095, China

Institute of High Energy Physics Chinese Academy of Sciences, 100049 Beijing 100049, China

Corresponding Author Email: 
kliu@mail.neu.edu.cn, dchba@mail.neu.edu.cn
Page: 
243-249
|
DOI: 
https://doi.org/10.14447/jnmes.v18i4.355
Received: 
17 November 2015
|
Accepted: 
25 November 2015
|
Published: 
15 December 2015
| Citation
Abstract: 

As the size of microfluidic channel further shrinks to nanometer, the dimension is approximate to biomolecules as well as Debye length (DL). Great deals of phenomena which do not exist in the usual world will appear. The overlapping of electrical double layers (EDL) in the channel and the increasing of the viscosity are such good examples. All of these phenomena lead to the fundamental research such as colloid science, transport process and micro/nanoscale hydrodynamics. It demands more advanced technique for micro/nanoscale design and fabrication as the channels downing to nanometer scale. In this work, molecular dynamics was adopted to calculate the transport of proteins and water molecules in nanofluidic channels. New methods of nanochannel fabrication were developed based on glass substrate. Glass nanochips were achieved via ultraviolet lithography and wet chemical etching. The channel depth could be adjusted by controlling the etching time. Finally the scanning electron microscope (SEM) and surface profiler were used to characterize the shape and surface morphology of the nanochannel in detail. This study presents the feasibility of such design and fabrication methods, which gives an interesting exploration for the application of nanofluidic technology.

Keywords: 

nanofluidics; biological chip; molecular dynamics; wet chemical etching

1. Introduction
2. Channel Design and Numerical Stmulation
3. Experimental
4. Results and Discussion
5. Conclusions
Acknowledgment

This work is jointly supported by National Natural Science Foundation of China (51376039), Doctoral Fund of Ministry of Education of China (20120042110031) and the Fundamental Re-search Funds for the Central Universities of China (N120403006, L1503004). 

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