Abstract
Adhesion control of various liquid droplets on a liquid-repellent surface is a fundamental technique in novel open channel microfluidic systems. Herein, we demonstrate reversible liquid droplet adhesion switching on superamphiphobic Pd-decorated Ag dendrites (Pd/Ag dendrites). Although adhesion between liquids and the superamphiphobic surfaces was extremely low under ambient air, high adhesion was instantly achieved by exposure of the dendrites to 8% hydrogen gas. Transition from low to high adhesion and the reverse case were successfully repeated more than 10 times by switching from atmospheric ambient air to 8% hydrogen gas. This is the first technique that allows real-time reversible adhesion change with various liquid droplets to a surface using gas-induced structural changes and can potentially be used to realize various functions for droplet-based microfluidics.
| Original language | English |
|---|---|
| Pages (from-to) | 4964-4971 |
| Number of pages | 8 |
| Journal | Chemistry of Materials |
| Volume | 27 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2015 Jul 28 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry
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Reversible Liquid Adhesion Switching of Superamphiphobic Pd-Decorated Ag Dendrites via Gas-Induced Structural Changes. / Kim, Dayeong; Seo, Jungmok; Shin, Sera; Lee, Soonil; Lee, Kilsoo; Cho, Hyeonjin; Shim, Wooyoung; Lee, Han Bo Ram; Lee, Taeyoon.
In: Chemistry of Materials, Vol. 27, No. 14, 28.07.2015, p. 4964-4971.Research output: Contribution to journal › Article
TY - JOUR
T1 - Reversible Liquid Adhesion Switching of Superamphiphobic Pd-Decorated Ag Dendrites via Gas-Induced Structural Changes
AU - Kim, Dayeong
AU - Seo, Jungmok
AU - Shin, Sera
AU - Lee, Soonil
AU - Lee, Kilsoo
AU - Cho, Hyeonjin
AU - Shim, Wooyoung
AU - Lee, Han Bo Ram
AU - Lee, Taeyoon
PY - 2015/7/28
Y1 - 2015/7/28
N2 - Adhesion control of various liquid droplets on a liquid-repellent surface is a fundamental technique in novel open channel microfluidic systems. Herein, we demonstrate reversible liquid droplet adhesion switching on superamphiphobic Pd-decorated Ag dendrites (Pd/Ag dendrites). Although adhesion between liquids and the superamphiphobic surfaces was extremely low under ambient air, high adhesion was instantly achieved by exposure of the dendrites to 8% hydrogen gas. Transition from low to high adhesion and the reverse case were successfully repeated more than 10 times by switching from atmospheric ambient air to 8% hydrogen gas. This is the first technique that allows real-time reversible adhesion change with various liquid droplets to a surface using gas-induced structural changes and can potentially be used to realize various functions for droplet-based microfluidics.
AB - Adhesion control of various liquid droplets on a liquid-repellent surface is a fundamental technique in novel open channel microfluidic systems. Herein, we demonstrate reversible liquid droplet adhesion switching on superamphiphobic Pd-decorated Ag dendrites (Pd/Ag dendrites). Although adhesion between liquids and the superamphiphobic surfaces was extremely low under ambient air, high adhesion was instantly achieved by exposure of the dendrites to 8% hydrogen gas. Transition from low to high adhesion and the reverse case were successfully repeated more than 10 times by switching from atmospheric ambient air to 8% hydrogen gas. This is the first technique that allows real-time reversible adhesion change with various liquid droplets to a surface using gas-induced structural changes and can potentially be used to realize various functions for droplet-based microfluidics.
UR - http://www.scopus.com/inward/record.url?scp=84938099561&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938099561&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b01038
DO - 10.1021/acs.chemmater.5b01038
M3 - Article
AN - SCOPUS:84938099561
VL - 27
SP - 4964
EP - 4971
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 14
ER -