Virtual Stencil for Patterning and Modeling in a Quantitative Volume Using EWOD and DEP Devices for Microfluidics.

Micromachines (Basel)

Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan.

Published: September 2021

AI Article Synopsis

  • Scientists used a special chip called an EWOD chip to make tiny droplets for their experiments using different settings like voltage and space between plates.
  • They created different shapes with a liquid called propylene carbonate and a special mix of materials using a UV light to harden the structures.
  • By using this EWOD chip, they were able to stack layers and make a cool 3D object automatically.

Article Abstract

Applying microfluidic patterning, droplets were precisely generated on an electrowetting-on-dielectric (EWOD) chip considering these parameters: number of generating electrodes, number of cutting electrodes, voltage, frequency and gap between upper and lower plates of the electrode array on the EWOD chip. In a subsequent patterning experiment, an environment with three generating electrodes, one cutting electrode and a gap height 10 μm, we obtained a quantitative volume for patterning. Propylene carbonate liquid and a mixed colloid of polyphthalate carbonate (PPC) and photosensitive polymer material were manipulated into varied patterns. With support from a Z-axis lifting platform and a UV lamp, a cured 3D structure was stacked. Using an EWOD system, a multi-layer three-dimensional structure was produced for the patterning. A two-plate EWOD system patterned propylene carbonate in a quantitative volume at 140 Vpp/20 kHz with automatic patterning.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8464762PMC
http://dx.doi.org/10.3390/mi12091104DOI Listing

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