Abstract
Assembly of colloidal arrays has attracted much attention over the past decade. Surface property and topology play important roles in the assembly of colloidal patterns and layers on various substrates. In this paper, we report on a novel micropattern-assisted nanoassembly (μPAN) method to organize highly ordered nanocolloidal arrays onto a nonfouling polymer surface. Polyethylene glycol (PEG) hydrogel is used as the substrate material in the study, for its desired biological properties, low surface energy and photopatternability. A highdensity array of PEG microwells is first fabricated on glass substrates with the minimal feature resolution of 1 Jim using photolithography method. By simply controlling the colloidal concentration of the dipping solution, the dimensions of the microwells and pulling speed of the substrate, various well organized nanocolloidal patterns are assembled inside the PEG microwells. In addition, the effect of surface property is experimentally investigated. After oxygen plasma treatment, the nonfouling property of the PEG surface deteriorates significantly, leading to a complete surface coverage of nanocolloidal beads. The novel μPAN method allows organizing highly ordered nanocolloidal arrays in a predictable and robust fashion, and has potential applications in photonic crystal fabrication, biological sensing, analytical detection and nanoassembly.
| Original language | English (US) |
|---|---|
| Title of host publication | 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009 |
| Pages | 735-738 |
| Number of pages | 4 |
| DOIs | |
| State | Published - 2009 |
| Event | 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009 - Shenzhen, China Duration: Jan 5 2009 → Jan 8 2009 |
Other
| Other | 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009 |
|---|---|
| Country | China |
| City | Shenzhen |
| Period | 1/5/09 → 1/8/09 |
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Keywords
- Colloid
- Nanoassembly
- Polyethylene glycol
- Surface energy
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Micropattern-assisted nanoassembly : Ordered nanocolloidal array on PEG microstructures. / Cong, Hailin; Revzin, Alexander; Pan, Tingrui.
4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009. 2009. p. 735-738 5068683.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Micropattern-assisted nanoassembly
T2 - Ordered nanocolloidal array on PEG microstructures
AU - Cong, Hailin
AU - Revzin, Alexander
AU - Pan, Tingrui
PY - 2009
Y1 - 2009
N2 - Assembly of colloidal arrays has attracted much attention over the past decade. Surface property and topology play important roles in the assembly of colloidal patterns and layers on various substrates. In this paper, we report on a novel micropattern-assisted nanoassembly (μPAN) method to organize highly ordered nanocolloidal arrays onto a nonfouling polymer surface. Polyethylene glycol (PEG) hydrogel is used as the substrate material in the study, for its desired biological properties, low surface energy and photopatternability. A highdensity array of PEG microwells is first fabricated on glass substrates with the minimal feature resolution of 1 Jim using photolithography method. By simply controlling the colloidal concentration of the dipping solution, the dimensions of the microwells and pulling speed of the substrate, various well organized nanocolloidal patterns are assembled inside the PEG microwells. In addition, the effect of surface property is experimentally investigated. After oxygen plasma treatment, the nonfouling property of the PEG surface deteriorates significantly, leading to a complete surface coverage of nanocolloidal beads. The novel μPAN method allows organizing highly ordered nanocolloidal arrays in a predictable and robust fashion, and has potential applications in photonic crystal fabrication, biological sensing, analytical detection and nanoassembly.
AB - Assembly of colloidal arrays has attracted much attention over the past decade. Surface property and topology play important roles in the assembly of colloidal patterns and layers on various substrates. In this paper, we report on a novel micropattern-assisted nanoassembly (μPAN) method to organize highly ordered nanocolloidal arrays onto a nonfouling polymer surface. Polyethylene glycol (PEG) hydrogel is used as the substrate material in the study, for its desired biological properties, low surface energy and photopatternability. A highdensity array of PEG microwells is first fabricated on glass substrates with the minimal feature resolution of 1 Jim using photolithography method. By simply controlling the colloidal concentration of the dipping solution, the dimensions of the microwells and pulling speed of the substrate, various well organized nanocolloidal patterns are assembled inside the PEG microwells. In addition, the effect of surface property is experimentally investigated. After oxygen plasma treatment, the nonfouling property of the PEG surface deteriorates significantly, leading to a complete surface coverage of nanocolloidal beads. The novel μPAN method allows organizing highly ordered nanocolloidal arrays in a predictable and robust fashion, and has potential applications in photonic crystal fabrication, biological sensing, analytical detection and nanoassembly.
KW - Colloid
KW - Nanoassembly
KW - Polyethylene glycol
KW - Surface energy
UR - http://www.scopus.com/inward/record.url?scp=70349671790&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349671790&partnerID=8YFLogxK
U2 - 10.1109/NEMS.2009.5068683
DO - 10.1109/NEMS.2009.5068683
M3 - Conference contribution
SN - 9781424446308
SP - 735
EP - 738
BT - 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009
ER -