Abstract
The utility of electro-responsive smart materials has been limited by bubble generation (hydrolysis) during application of electrical fields and by biocompatibility issues. Here we describe the design of a device that overcomes these limitations by combining material properties, new design concepts, and microtechnology. 4-Hydroxybutyl acrylate (4-HBA) was used as a backbone hydrogel material, and its actuating behavior, bending force, and elasticity were extensively characterized as a function of size and acrylic acid concentration. To prevent bubble generation, the system was designed such that the hydrogel actuator could be operated at low driving voltages (<1.2 V). A microfluidic channel with an integrated electroactive hydrogel actuator was developed for sorting particles. This device could be operated in cell culture media, and the sorting capabilities were initially assessed by sorting droplets in an oil droplet emulsion. Biocompatibility was subsequently tested by sorting mouse embryoid bodies (mEBs) according to size. The sorted and collected mEBs maintained pluripotency, and selected mEBs successfully differentiated into three germ layers: endoderm, mesoderm, and ectoderm. The electroactive hydrogel device, integrated into a microfluidic system, successfully demonstrated the practical application of smart materials for use in cell biology.
| Original language | English |
|---|---|
| Pages (from-to) | 1604-1610 |
| Number of pages | 7 |
| Journal | Lab on a Chip - Miniaturisation for Chemistry and Biology |
| Volume | 10 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2010 Jun 9 |
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ASJC Scopus subject areas
- Biochemistry
- Chemistry(all)
- Bioengineering
- Biomedical Engineering
Cite this
Electrically-driven hydrogel actuators in microfluidic channels : Fabrication, characterization, and biological application. / Kwon, Gu Han; Choi, Yoon Young; Park, Joong Yull; Woo, Dong Hun; Lee, Kyu Back; Kim, Jong-Hoon; Lee, Sang Hoon.
In: Lab on a Chip - Miniaturisation for Chemistry and Biology, Vol. 10, No. 12, 09.06.2010, p. 1604-1610.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrically-driven hydrogel actuators in microfluidic channels
T2 - Fabrication, characterization, and biological application
AU - Kwon, Gu Han
AU - Choi, Yoon Young
AU - Park, Joong Yull
AU - Woo, Dong Hun
AU - Lee, Kyu Back
AU - Kim, Jong-Hoon
AU - Lee, Sang Hoon
PY - 2010/6/9
Y1 - 2010/6/9
N2 - The utility of electro-responsive smart materials has been limited by bubble generation (hydrolysis) during application of electrical fields and by biocompatibility issues. Here we describe the design of a device that overcomes these limitations by combining material properties, new design concepts, and microtechnology. 4-Hydroxybutyl acrylate (4-HBA) was used as a backbone hydrogel material, and its actuating behavior, bending force, and elasticity were extensively characterized as a function of size and acrylic acid concentration. To prevent bubble generation, the system was designed such that the hydrogel actuator could be operated at low driving voltages (<1.2 V). A microfluidic channel with an integrated electroactive hydrogel actuator was developed for sorting particles. This device could be operated in cell culture media, and the sorting capabilities were initially assessed by sorting droplets in an oil droplet emulsion. Biocompatibility was subsequently tested by sorting mouse embryoid bodies (mEBs) according to size. The sorted and collected mEBs maintained pluripotency, and selected mEBs successfully differentiated into three germ layers: endoderm, mesoderm, and ectoderm. The electroactive hydrogel device, integrated into a microfluidic system, successfully demonstrated the practical application of smart materials for use in cell biology.
AB - The utility of electro-responsive smart materials has been limited by bubble generation (hydrolysis) during application of electrical fields and by biocompatibility issues. Here we describe the design of a device that overcomes these limitations by combining material properties, new design concepts, and microtechnology. 4-Hydroxybutyl acrylate (4-HBA) was used as a backbone hydrogel material, and its actuating behavior, bending force, and elasticity were extensively characterized as a function of size and acrylic acid concentration. To prevent bubble generation, the system was designed such that the hydrogel actuator could be operated at low driving voltages (<1.2 V). A microfluidic channel with an integrated electroactive hydrogel actuator was developed for sorting particles. This device could be operated in cell culture media, and the sorting capabilities were initially assessed by sorting droplets in an oil droplet emulsion. Biocompatibility was subsequently tested by sorting mouse embryoid bodies (mEBs) according to size. The sorted and collected mEBs maintained pluripotency, and selected mEBs successfully differentiated into three germ layers: endoderm, mesoderm, and ectoderm. The electroactive hydrogel device, integrated into a microfluidic system, successfully demonstrated the practical application of smart materials for use in cell biology.
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UR - http://www.scopus.com/inward/citedby.url?scp=77953089892&partnerID=8YFLogxK
U2 - 10.1039/b926443d
DO - 10.1039/b926443d
M3 - Article
C2 - 20376390
AN - SCOPUS:77953089892
VL - 10
SP - 1604
EP - 1610
JO - Lab on a Chip - Miniaturisation for Chemistry and Biology
JF - Lab on a Chip - Miniaturisation for Chemistry and Biology
SN - 1473-0197
IS - 12
ER -