Article (Scientific journals)
Antiferroelectric liquid crystals with induced intermediate polar phases and the effects of doping with carbon nanotubes
LAGERWALL, Jan; Dabrowski, R.; Scalia, G.
2007In Journal of Non-Crystalline Solids, 353 (47-51), p. 4411-4417
Peer Reviewed verified by ORBi
 

Files


Full Text
JLagerwall_J_NonCrystSolids_2007_final_draft_post_referee.pdf
Publisher postprint (8.7 MB)
Download

All documents in ORBilu are protected by a user license.

Send to



Details



Keywords :
carbon nanotubes; liquid crystals; antiferroelectric; dielectric spectroscopy
Abstract :
[en] By mixing a commercial broad-temperature-range nematic liquid crystal mixture with a single-component antiferroelectric chiral smectic exhibiting two different chiral smectic-C-type phases as only mesophases, we have induced three phases which appear in neither of the two components; the paraelectric SmA* phase and the so-called intermediate phases SmC􏰀b and SmC􏰀c, antiferroelectric and heli- electric in nature, respectively. The generation of the two latter phases in mixtures where one component is an essentially non-chiral nematic is highly unexpected, since these phases are generally linked to high degree of smectic order and/or strong chiral interactions. It is probably made possible through microphase segregation driven by the incompatibility of the fluorinated tail of the smectic compo- nent with the non-fluorinated constituents of the nematic mixture. We also doped the nematic with single-wall carbon nanotubes (SWCNTs) before adding it to the smectic at the same concentration, allowing us to study the effect of SWCNTs on antiferroelectric liquid crystals. Although the final SWCNT concentration was very small (0.002 wt%) the phase sequence was radically altered, the ordin- ary SmC* phase now being present all the way between SmA* and crystallization, while all other variations of smectic-C-type order were suppressed.
Disciplines :
Materials science & engineering
Author, co-author :
LAGERWALL, Jan  ;  Martin-Luther-Universität Halle-Wittenberg
Dabrowski, R.
Scalia, G.
Language :
English
Title :
Antiferroelectric liquid crystals with induced intermediate polar phases and the effects of doping with carbon nanotubes
Publication date :
2007
Journal title :
Journal of Non-Crystalline Solids
ISSN :
0022-3093
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
353
Issue :
47-51
Pages :
4411-4417
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 21 March 2015

Statistics


Number of views
98 (3 by Unilu)
Number of downloads
181 (0 by Unilu)

Scopus citations®
 
38
Scopus citations®
without self-citations
27
OpenCitations
 
30
OpenAlex citations
 
34
WoS citations
 
30

Bibliography


Similar publications



Contact ORBilu