scholarly journals Study on Improving Thickness Uniformity of Microfluidic Chip Mold in the Electroforming Process

Micromachines ◽  
2016 ◽  
Vol 7 (1) ◽  
pp. 7 ◽  
Author(s):  
Liqun Du ◽  
Tong Yang ◽  
Ming Zhao ◽  
Yousheng Tao ◽  
Lei Luo ◽  
...  
Keyword(s):  
Microfluidic Chip ◽  
Thickness Uniformity ◽  
Electroforming Process

Fabrication of metal microfluidic chip mold with coplanar auxiliary cathode in the electroforming process

2018 ◽  
Vol 29 (2) ◽  
pp. 025002
Author(s):  
Ming Zhao ◽  
Liqun Du ◽  
Zhuangzhuang Wei ◽  
Chengquan Du ◽  
Xuqiang Liu ◽  
...  
Keyword(s):  
Microfluidic Chip ◽  
Electroforming Process

Effect of the Thickness Uniformity in Micro-Electroforming Process by Dividing Conductive Zone on Cathode

2009 ◽  
Vol 60-61 ◽  
pp. 202-206
Author(s):  
Li Qun Du ◽  
Li Chuan Yu ◽  
Lei Song ◽  
Chong Liu
Keyword(s):  
Theoretical Analysis ◽  
Current Density ◽  
Thickness Ratio ◽  
Experimental Results ◽  
Thickness Uniformity ◽  
Conductive Zone ◽  
Electroforming Process ◽  
Nickel Electroforming

In this paper, an effective method is presented to improve thickness uniformity in nickel electroforming process. In most electroforming processes, thickness ratio of edge to center is 2.5~4 and the shape of the electroforming zone is naturally a concave. Dividing conductive zone of electroforming structure to redistribute current density was applied to improve electroforming uniformity. Theoretical analysis and experimental results verify that a proper dividing method can improve the electroforming uniformity effectively. In the experiment, the thickness ratio of edge to center decreases from 2.91 to 1.88.

Drop driving on digital microfluidic chip

2020 ◽  
Vol 28 (11) ◽  
pp. 2488-2496
Author(s):  
Hong WANG ◽  
◽  
Jie ZHENG ◽  
Yan-peng YAN ◽  
Song WANG ◽  
...  
Keyword(s):  
Microfluidic Chip ◽  
Digital Microfluidic

An Enrichment Method for Bio-samples Based on Circular Injection on a Microfluidic Chip

2013 ◽  
Vol 40 (11) ◽  
pp. 1668-1673
Author(s):  
Min DU ◽  
Xiong-Ying YE ◽  
Jin-Yang FENG ◽  
Zeng-Shuai MA ◽  
Zhao-Ying ZHOU
Keyword(s):  
Microfluidic Chip ◽  
Enrichment Method

An enzyme reactor based on aptamer modified microfluidic chip for protein analysis

2013 ◽  
Vol 30 (11) ◽  
pp. 1127-1132 ◽  
Author(s):  
Peng XIAO ◽  
Dalei LI ◽  
Yan MAN ◽  
Lina GENG ◽  
Xuefei LU ◽  
...  
Keyword(s):  
Microfluidic Chip ◽  
Protein Analysis ◽  
Enzyme Reactor

scholarly journals Microfluidic Chip for Detection of Fungal Infections

ACS Omega ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 7474-7481 ◽  
Author(s):  
Waseem Asghar ◽  
Mazhar Sher ◽  
Nida S. Khan ◽  
Jatin M. Vyas ◽  
Utkan Demirci
Keyword(s):  
Microfluidic Chip ◽  
Fungal Infections

scholarly journals An LED-Driven AuNPs-PDMS Microfluidic Chip and Integrated Device for the Detection of Digital Loop-Mediated Isothermal DNA Amplification

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 177 ◽  
Author(s):  
Zengming Zhang ◽  
Shuhao Zhao ◽  
Fei Hu ◽  
Guangpu Yang ◽  
Juan Li ◽  
...  
Keyword(s):  
Nucleic Acids ◽  
Microfluidic Chip ◽  
Cross Flow ◽  
Flow Channel ◽  
Isothermal Amplification ◽  
Fluorescent Detection ◽  
Lamp Method ◽  
Biological Studies ◽  
Micro Cavity ◽  
Integrated Device

The sensitive quantification of low-abundance nucleic acids holds importance for a range of clinical applications and biological studies. In this study, we describe a facile microfluidic chip for absolute DNA quantifications based on the digital loop-mediated isothermal amplification (digital LAMP) method. This microfluidic chip integrates a cross-flow channel for droplet generation with a micro-cavity for droplet tiling. DNA templates in the LAMP reagent were divided into ~20,000 water-in-oil droplets at the cross-flow channel. The droplets were then tiled in the micro-cavity for isothermal amplification and fluorescent detection. Different from the existing polydimethylsiloxane (PDMS) microfluidic chips, this study incorporates gold nanoparticles (AuNPs) into PDMS substrate through silica coating and dodecanol modification. The digital LAMP chip prepared by AuNPs-PDMS combines the benefits of the microstructure manufacturing performance of PDMS with the light-to-heat conversion advantages of AuNPs. Upon illumination with a near infrared (NIR) LED, the droplets were stably and efficiently heated by the AuNPs in PDMS. We further introduce an integrated device with a NIR heating unit and a fluorescent detection unit. The system could detect HBV (hepatitis B virus)-DNA at a concentration of 1 × 101 to 1 × 104 copies/μL. The LED-driven digital LAMP chip and the integrated device; therefore, demonstrate high accuracy and excellent performance for the absolute quantification of low-abundance nucleic acids, showing the advantages of integration, miniaturization, cost, and power consumption.

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