scholarly journals Sonolithography: In‐Air Ultrasonic Particulate and Droplet Manipulation for Multiscale Surface Patterning

2020 ◽  
pp. 2000689
Author(s):  
Jenna M. Shapiro ◽  
Bruce W. Drinkwater ◽  
Adam W. Perriman ◽  
Mike Fraser
Keyword(s):  
Surface Patterning ◽  
Droplet Manipulation

Miniaturised preparation of polymeric nanoparticles using droplet manipulation on open surfaces

2019 ◽  
Vol 14 (13) ◽  
pp. 1312-1316 ◽  
Author(s):  
Alsaeed M. Abualsayed ◽  
Sara A. Abouelmagd ◽  
Mohamed Abdelgawad
Keyword(s):  
Polymeric Nanoparticles ◽  
Droplet Manipulation

Precise Droplet Manipulation Based on Surface Heterogeneity

2021 ◽  
Author(s):  
Huizeng Li ◽  
An Li ◽  
Zhipeng Zhao ◽  
Luanluan Xue ◽  
Mingzhu Li ◽  
...  
Keyword(s):  
Surface Heterogeneity ◽  
Droplet Manipulation

Self-Powered Droplet Manipulation System for Microfluidics Based on Triboelectric Nanogenerator Harvesting Rotary Energy

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Junjie Yu ◽  
Xiaoxiang Wei ◽  
Yuanchao Guo ◽  
Ziwei Zhang ◽  
Pinshu Rui ◽  
...  
Keyword(s):  
Microfluidic System ◽  
Triboelectric Nanogenerator ◽  
Cross Contamination ◽  
Fast Reaction ◽  
Microfluidic Technology ◽  
Manipulation System ◽  
Droplet Manipulation ◽  
Self Powered

Microfluidic technology, as a method for manipulating tiny fluids, has the advantages of low sample consumption, fast reaction, and no cross-contamination. In the microfluidic system, accurate manipulation of droplets is...

scholarly journals Universal Plasma Jet for Droplet Manipulation on a PDMS Surface towards Wall-Less Scaffolds

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1321
Author(s):  
Cheng-Yun Peng ◽  
Chia-Hung Dylan Tsai
Keyword(s):  
Plasma Treatment ◽  
Treatment Time ◽  
Plasma Jet ◽  
Aging Effect ◽  
Droplet Generation ◽  
Magnetic Actuation ◽  
Pdms Surface ◽  
Polymeric Surface ◽  
Air Jet ◽  
Droplet Manipulation

Droplet manipulation is important in the fields of engineering, biology, chemistry, and medicine. Many techniques, such as electrowetting and magnetic actuation, have been developed for droplet manipulation. However, the fabrication of the manipulation platform often takes a long time and requires well-trained skills. Here we proposed a novel method that can directly generate and manipulate droplets on a polymeric surface using a universal plasma jet. One of its greatest advantages is that the jet can tremendously reduce the time for the platform fabrication while it can still perform stable droplet manipulation with controllable droplet size and motion. There are two steps for the proposed method. First, the universal plasma jet is set in plasma mode for modifying the manipulation path for droplets. Second, the jet is switched to air-jet mode for droplet generation and manipulation. The jetted air separates and pushes droplets along the plasma-treated path for droplet generation and manipulation. According to the experimental results, the size of the droplet can be controlled by the treatment time in the first step, i.e., a shorter treatment time of plasma results in a smaller size of the droplet, and vice versa. The largest and the smallest sizes of the generated droplets in the results are about 6 µL and 0.1 µL, respectively. Infrared spectra of absorption on the PDMS surfaces with and without the plasma treatment are investigated by Fourier-transform infrared spectroscopy. Tests of generating and mixing two droplets on a PDMS surface are successfully achieved. The aging effect of plasma treatment for the proposed method is also discussed. The proposed method provides a simple, fast, and low-cost way to generate and manipulate droplets on a polymeric surface. The method is expected to be applied to droplet-based cell culture by manipulating droplets encapsulating living cells and towards wall-less scaffolds on a polymeric surface.

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