scholarly journals Dynamics of Electrowetting Droplet Motion in Digital Microfluidics Systems: From Dynamic Saturation to Device Physics

Micromachines ◽  
2015 ◽  
Vol 6 (6) ◽  
pp. 778-789 ◽  
Author(s):  
Weiwei Cui ◽  
Menglun Zhang ◽  
Xuexin Duan ◽  
Wei Pang ◽  
Daihua Zhang ◽  
...  
Keyword(s):  
Digital Microfluidics ◽  
Device Physics ◽  
Droplet Motion

scholarly journals Electrowetting on Dielectric (EWOD) Device with Dimple Structures for Highly Accurate Droplet Manipulation

2019 ◽  
Vol 9 (12) ◽  
pp. 2406 ◽  
Author(s):  
Katsuo Mogi ◽  
Shungo Adachi ◽  
Naoki Takada ◽  
Tomoya Inoue ◽  
Tohru Natsume
Keyword(s):  
High Speed ◽  
Thin Sheet ◽  
Digital Microfluidics ◽  
Three Dimensional ◽  
Substrate Type ◽  
Droplet Motion ◽  
Electrowetting On Dielectric ◽  
Flat Substrate ◽  
Single Substrate ◽  
Droplet Manipulation

Digital microfluidics based on electrowetting on dielectric (EWOD) devices has potential as a fundamental technology for the accurate preparation of dangerous reagents, the high-speed dispensing of rapidly deteriorating reagents, and the fine adjustment of expensive reagents, such as the preparation of for positron emission tomography (PET). To allow single substrate type EWODs to be practically used in an automatic operation system, we developed a dimple structure as a key technique for a highly accurate droplet manipulation method. The three-dimensional shape of the dimple structure is embossed onto a disposable thin sheet. In this study, we confirmed that the dimple structure can suppress unintended droplet motion caused by unidentified factors. In addition, the stability of the droplets on the dimple structures was evaluated using a sliding experiment. On a flat substrate, the success rate of a droplet motion was lower than 70.8%, but on the dimple structure, the droplets were able to be moved along the dimple structures correctly without unintended motion caused by several environmental conditions. These results indicated that the dimple structure increased the controllability of the droplets. Hence, the dimple structure will contribute to the practical application of digital microfluidics based on single substrate type EWODs.

Mechanical-activated digital microfluidics with gradient surface wettability

Lab on a Chip ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 223-232 ◽  
Author(s):  
Lin Qi ◽  
Ye Niu ◽  
Cody Ruck ◽  
Yi Zhao
Keyword(s):  
Digital Microfluidics ◽  
Hydrophobic Surface ◽  
Surface Wettability ◽  
Long Distance ◽  
Droplet Motion ◽  
Surface Patterns ◽  
Droplet Manipulation ◽  
Gradient Surface

Long-distance droplet motion and selective droplet manipulation on repeated hydrophobic surface patterns with gradient wettability by in-plane cyclic vibration.

Carbon Nanotube and Graphene Device Physics

2009 ◽  
Author(s):  
H.-S. Philip Wong ◽  
Deji Akinwande
Keyword(s):  
Carbon Nanotube ◽  
Device Physics

EFFECT OF A FIRE PLUME ON SUPPRESSION SPRAY DROPLET MOTION

2006 ◽  
Vol 16 (5) ◽  
pp. 563-578 ◽  
Author(s):  
John A. Schwille ◽  
Richard M. Lueptow
Keyword(s):  
Fire Plume ◽  
Spray Droplet ◽  
Droplet Motion

Photonic Silicon Device Physics.

1995 ◽  
Author(s):  
S. D. Russell ◽  
W. B. Dubbelday ◽  
R. L. Shimabukuro ◽  
P. R. De La Houssaye
Keyword(s):  
Device Physics ◽  
Silicon Device

Magnetic Digital Microfluidics for Point-of-Care Testing: Where Are We Now?

2020 ◽  
Vol 27 ◽  
Author(s):  
Yi Zhang
Keyword(s):  
System Integration ◽  
Diagnostic Tests ◽  
Point Of Care ◽  
Digital Microfluidics ◽  
Controlled Environment ◽  
Point Of Care Testing ◽  
Microfluidic Platforms ◽  
Interface System ◽  
Technical Issues ◽  
Sample System

: Point-of-care (POC) testing decentralizes the diagnostic tests to the sites near the patient. Many POC tests rely microfluidic platforms for sample-to-answer analysis. Compared to other microfluidic systems, magnetic digital microfluidics demonstrate compelling advantages for POC diagnostics. In this review, we have examined the capability of magnetic digital microfluidics-based POC diagnostic platforms. More importantly, we have categorized POC settings into three classes based on “where is the point”, “who to care” and “how to test”, and evaluated the suitability of magnetic digital microfluidics in various POC settings. Furthermore, we have addressed other technical issues associated with POC testing such as controlled environment, sample-system interface, system integration and information connectivity. We hope this review would provide a guideline for the future development of magnetic digital microfluidics-based platforms for POC testing.

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