Abstract
Bilayer actuators consisting of a layer of aligned PPy microtubules with the length of 15 μm and a layer of compact PPy film with the thickness of 15 μm have been fabricated. The actuators can bend to an angle much larger than 90° at an actuation rate of -100° s-1 under a driving potential of 0.8 V versus Ag/AgCl. The microtubule layers of both type actuators are "sticky", and can capture or trap polystyrene microparticles from their dilute dispersions. Moreover, the captured particles can be extensively released by sonication or partly released by electrochemically reducing the actuators in the aqueous electrolytes. On the basis of extensive investigations including controlling the conditions of electrochemical actuation and the redox states of PPy microtubules, adjusting the particle size and composition, possible mechanisms for capturing and releasing microparticles were proposed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2911-2917 |
| Number of pages | 7 |
| Journal | Advanced Functional Materials |
| Volume | 17 |
| Issue number | 15 |
| DOIs | |
| State | Published - Oct 15 2007 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Condensed Matter Physics
- Physics and Astronomy (miscellaneous)
Cite this
Polypyrrole microtubule actuators for seizing and transferring microparticles. / He, Ximin; Li, Chun; Chen, Feng'en; Shi, Gaoquan.
In: Advanced Functional Materials, Vol. 17, No. 15, 15.10.2007, p. 2911-2917.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polypyrrole microtubule actuators for seizing and transferring microparticles
AU - He, Ximin
AU - Li, Chun
AU - Chen, Feng'en
AU - Shi, Gaoquan
PY - 2007/10/15
Y1 - 2007/10/15
N2 - Bilayer actuators consisting of a layer of aligned PPy microtubules with the length of 15 μm and a layer of compact PPy film with the thickness of 15 μm have been fabricated. The actuators can bend to an angle much larger than 90° at an actuation rate of -100° s-1 under a driving potential of 0.8 V versus Ag/AgCl. The microtubule layers of both type actuators are "sticky", and can capture or trap polystyrene microparticles from their dilute dispersions. Moreover, the captured particles can be extensively released by sonication or partly released by electrochemically reducing the actuators in the aqueous electrolytes. On the basis of extensive investigations including controlling the conditions of electrochemical actuation and the redox states of PPy microtubules, adjusting the particle size and composition, possible mechanisms for capturing and releasing microparticles were proposed.
AB - Bilayer actuators consisting of a layer of aligned PPy microtubules with the length of 15 μm and a layer of compact PPy film with the thickness of 15 μm have been fabricated. The actuators can bend to an angle much larger than 90° at an actuation rate of -100° s-1 under a driving potential of 0.8 V versus Ag/AgCl. The microtubule layers of both type actuators are "sticky", and can capture or trap polystyrene microparticles from their dilute dispersions. Moreover, the captured particles can be extensively released by sonication or partly released by electrochemically reducing the actuators in the aqueous electrolytes. On the basis of extensive investigations including controlling the conditions of electrochemical actuation and the redox states of PPy microtubules, adjusting the particle size and composition, possible mechanisms for capturing and releasing microparticles were proposed.
UR - http://www.scopus.com/inward/record.url?scp=35549002316&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35549002316&partnerID=8YFLogxK
U2 - 10.1002/adfm.200600869
DO - 10.1002/adfm.200600869
M3 - Article
AN - SCOPUS:35549002316
VL - 17
SP - 2911
EP - 2917
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 15
ER -