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Citation: WANG Wei, LIU Zhen-Bang, ZHANG Guo-Yu, WANG Zhen-Xin, HAN Dong-Xue, NIU Li, BAO Yu. Development of Piezoelectric Oscillation- Based Microarray Spotting System[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(4): 620-625. doi: 10.11895/j.issn.0253-3820.160928 shu

Development of Piezoelectric Oscillation- Based Microarray Spotting System

WANG Wei ^1,2, ,
LIU Zhen-Bang ² ,
ZHANG Guo-Yu ¹ ,
WANG Zhen-Xin ² ,
HAN Dong-Xue ² ,
NIU Li ² ,
BAO Yu ²

1.
The School of Photo-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China;
2.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received Date: 28 December 2016
Revised Date: 6 February 2017

A new type of piezoelectric oscillation-based non-contact spotting mode has been developed to overcome the disadvantages of traditional non-contact spotting modes including complicated operation procedure, cleaning difficulty of spotting needle, large sample consumption of electromagnetic microvalve and high spotting cost of piezoelectric inkjet based non-contact spotting mode. In the device, the capillary spotting needle and the piezoelectric driving device are two independent units used for replacing and cleaning capillary spotting needle. The glass capillary spotting needle is prepared by the laser melting method with adjustable diameter and low cost. The sample spotting volume of the device can be easily adjusted in the range of 10^-10-10^-9 by changing the amplitude and frequency of piezoelectric ceramic. A microarray spotting system is developed by the combination of the piezoelectric oscillation-based non-contact spotting mode and three dimensional precision displacement control technology. The multiple parameters of as-prepared microarray spotting system have been tested including spotting volume, density of spot and spotting precision. The experimental results indicate that the minimum volume of single spot with 320 pL and the highest density of spot with 4000 spots/cm² can be achieved by the as-prepared microarray spotting system. Furthermore, the as-prepared microarray spotting system can also be employed to fabricate patterned interface.
- Piezoelectric oscillation,
- Microarray spotting system,
- Glass capillary spotting needle,
- Patterned interface fabrication
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