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Solventless ordering of colloidal particles through application of patterned elastomeric stamps under pressure
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10.1063/1.1795362
/content/aip/journal/apl/85/13/10.1063/1.1795362
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/13/10.1063/1.1795362
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Illustration of the experimental procedure. A cross-sectional SEM image is shown in the figure for the microstructure of a PDMS stamp.

Image of FIG. 2.
FIG. 2.

Typical ordering results for various PS beads and PDMS stamps. (a)–(d) OM images of ordered PS beads along the channels of a PDMS stamp when annealed for at under a pressure of . and 0.85 for (a) and (c), respectively. Magnified views [(b) and (d), circled regions] show a single or multiple lines of PS beads along the channel direction depending on the initial fractional density; (e) SEM image of an interconnected structure of PS beads for a PDMS stamp having cylinders (positive) and PS beads, annealed for at under a pressure of ; (f) SEM image of a star-shaped isolated structure. A PDMS stamp having voids (negative) and PS beads were used, annealed for at under a pressure of .

Image of FIG. 3.
FIG. 3.

(a) Calculation of zero shear viscosity using the William–Landel–Ferry (WLF) equation, which gives and for ; (b) comparison between theory and experimental data at various conditions.

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/content/aip/journal/apl/85/13/10.1063/1.1795362
2004-09-28
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Solventless ordering of colloidal particles through application of patterned elastomeric stamps under pressure
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/13/10.1063/1.1795362
10.1063/1.1795362
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