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Orientating layers with adjustable pretilt angles for liquid crystals deposited by a linear atmospheric pressure plasma source
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10.1063/1.4807695
/content/aip/journal/rsi/84/6/10.1063/1.4807695
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/6/10.1063/1.4807695
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the LAPPS deposition setup used for plasma polymerization.

Image of FIG. 2.
FIG. 2.

Discharge voltages at different RF powers ranging from 30 to 110 W under plasma-on and plasma-off conditions. The helium feed rate is 6 slm.

Image of FIG. 3.
FIG. 3.

Film thickness and deposition rate of the films as a function of the HMDSO feed rate at a RF power of 70 W.

Image of FIG. 4.
FIG. 4.

Film thickness and deposition rate of the films versus the RF power at a HMDSO feed rate of 4 sccm.

Image of FIG. 5.
FIG. 5.

FTIR spectra of HMDSO polymer films deposited at a RF power of 70 W and a HMDSO feed rate of 6 sccm.

Image of FIG. 6.
FIG. 6.

Surface energy and composition ratios of the films versus the HMDSO feed rate at a RF power of 70 W.

Image of FIG. 7.
FIG. 7.

Surface energy and composition ratios of the films versus the RF power at a HMDSO feed rate of 4 sccm.

Image of FIG. 8.
FIG. 8.

POM photographs of LC cells through a crossed polarizer at a RF power of 70 W and a HMDSO feed rate of 2 sccm. (a) Dark state and (b) bright state.

Image of FIG. 9.
FIG. 9.

Pretilt angles of LC as a function of (●) the HMDSO feed rate at a RF power of 70 W and (■) the RF power at a HMDSO feed rate of 4 sccm.

Image of FIG. 10.
FIG. 10.

Surface energy versus / (■) at a HMDSO feed rate of 4 sccm, (●) at a RF power of 70 W. The deposition parameters are the same as in Figs. 5 and 6 .

Image of FIG. 11.
FIG. 11.

Deposition rate versus / (■) at a HMDSO feed rate of 4 sccm and (●) at a RF power of 70 W.

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/content/aip/journal/rsi/84/6/10.1063/1.4807695
2013-06-05
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Orientating layers with adjustable pretilt angles for liquid crystals deposited by a linear atmospheric pressure plasma source
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/6/10.1063/1.4807695
10.1063/1.4807695
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