Abstract
Micro and nano-patterned surfaces are important for many applications ranging from antibiofouling over tissue engineering to electronics. Often the incorporation of functional entities is of interest. Polymer coatings especially polyelectrolyte multilayer (PEM) films and patterns are materials offering a large variety of tuning and engineering. The PEM pattern printing quality bases not only on the surface force balance but also in the way the PEM is softened, which can be done by printing the PEM in water, using an ultrasound humidifier or by exposing the film to (hot) water vapor. In this publication it is shown, that cold water vapor from an ultrasound humidifier or direct printing in water is superior to steam evaporation onto PEM thin films as humidification method. In addition the capillary pressure of the patterns within the stamp and the glass-viscous flow transition point of the PEM thin film are the significant parameters for PEM printing. This is because the PEM can surpass the glass-viscous flow transition point due to the shear forces and be sucked into the stamp microwells (or holes) preventing a structure replication. Under high temperatures and in aqueous conditions, the PEM can be expelled from the microwells due to the osmotic pressure produced by the counter ions of PEM in glass-viscous flow state and dissolving polyelectrolyte if a PEM with counter ion based charge balance is used.
| Original language | English |
|---|---|
| Pages (from-to) | 271-278 |
| Number of pages | 8 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 483 |
| DOIs | |
| Publication status | Published - 20 Oct 2015 |
| Externally published | Yes |
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Keywords
- Capillary forces
- Humidification method
- Microcontact printing
- Osmotic pressure
- PEM glass-viscous flow transition
- Polyelectrolyte multilayers
ASJC Scopus subject areas
- Colloid and Surface Chemistry
Cite this
Microcontact printing of polyelectrolyte multilayer thin films : Glass-viscous flow transition based effects and hydration methods. / Gai, Meiyu; Frueh, Johannes; Sukhorukov, Gleb B.; Girard-Egrot, Agnes; Rebaud, Samuel; Doumeche, Bastien; He, Qiang.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 483, 20.10.2015, p. 271-278.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microcontact printing of polyelectrolyte multilayer thin films
T2 - Glass-viscous flow transition based effects and hydration methods
AU - Gai, Meiyu
AU - Frueh, Johannes
AU - Sukhorukov, Gleb B.
AU - Girard-Egrot, Agnes
AU - Rebaud, Samuel
AU - Doumeche, Bastien
AU - He, Qiang
PY - 2015/10/20
Y1 - 2015/10/20
N2 - Micro and nano-patterned surfaces are important for many applications ranging from antibiofouling over tissue engineering to electronics. Often the incorporation of functional entities is of interest. Polymer coatings especially polyelectrolyte multilayer (PEM) films and patterns are materials offering a large variety of tuning and engineering. The PEM pattern printing quality bases not only on the surface force balance but also in the way the PEM is softened, which can be done by printing the PEM in water, using an ultrasound humidifier or by exposing the film to (hot) water vapor. In this publication it is shown, that cold water vapor from an ultrasound humidifier or direct printing in water is superior to steam evaporation onto PEM thin films as humidification method. In addition the capillary pressure of the patterns within the stamp and the glass-viscous flow transition point of the PEM thin film are the significant parameters for PEM printing. This is because the PEM can surpass the glass-viscous flow transition point due to the shear forces and be sucked into the stamp microwells (or holes) preventing a structure replication. Under high temperatures and in aqueous conditions, the PEM can be expelled from the microwells due to the osmotic pressure produced by the counter ions of PEM in glass-viscous flow state and dissolving polyelectrolyte if a PEM with counter ion based charge balance is used.
AB - Micro and nano-patterned surfaces are important for many applications ranging from antibiofouling over tissue engineering to electronics. Often the incorporation of functional entities is of interest. Polymer coatings especially polyelectrolyte multilayer (PEM) films and patterns are materials offering a large variety of tuning and engineering. The PEM pattern printing quality bases not only on the surface force balance but also in the way the PEM is softened, which can be done by printing the PEM in water, using an ultrasound humidifier or by exposing the film to (hot) water vapor. In this publication it is shown, that cold water vapor from an ultrasound humidifier or direct printing in water is superior to steam evaporation onto PEM thin films as humidification method. In addition the capillary pressure of the patterns within the stamp and the glass-viscous flow transition point of the PEM thin film are the significant parameters for PEM printing. This is because the PEM can surpass the glass-viscous flow transition point due to the shear forces and be sucked into the stamp microwells (or holes) preventing a structure replication. Under high temperatures and in aqueous conditions, the PEM can be expelled from the microwells due to the osmotic pressure produced by the counter ions of PEM in glass-viscous flow state and dissolving polyelectrolyte if a PEM with counter ion based charge balance is used.
KW - Capillary forces
KW - Humidification method
KW - Microcontact printing
KW - Osmotic pressure
KW - PEM glass-viscous flow transition
KW - Polyelectrolyte multilayers
UR - http://www.scopus.com/inward/record.url?scp=84941742612&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84941742612&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2015.05.009
DO - 10.1016/j.colsurfa.2015.05.009
M3 - Article
AN - SCOPUS:84941742612
VL - 483
SP - 271
EP - 278
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
ER -