TY - JOUR
T1 - Structural characterization of various chiral smectic-C phases by resonant X-ray scattering
AU - Mach, P.
AU - Pindak, R.
AU - Levelut, A. M.
AU - Barois, P.
AU - Nguyen, H. T.
AU - Huang, C. C.
AU - Furenlid, L.
PY - 1998
Y1 - 1998
N2 - We report the results of resonant x-ray diffraction at the sulfur K-edge performed upon free-standing films of a thiobenzoate liquid-crystal compound. Our data provide the first direct structural evidence of distinct periodicities in several chiral Sm-C phases, including 2-layer, 3-layer, and 4-layer superlattices in Sm-C*A, Sm-C*FI1, and Sm-C*FI2, respectively. In Sm-C*α, periodicity incommensurate with the layer spacing was detected. The racemic compound version was also studied. The results are consistent with a “clock model” of the Sm-C* variant structures.
AB - We report the results of resonant x-ray diffraction at the sulfur K-edge performed upon free-standing films of a thiobenzoate liquid-crystal compound. Our data provide the first direct structural evidence of distinct periodicities in several chiral Sm-C phases, including 2-layer, 3-layer, and 4-layer superlattices in Sm-C*A, Sm-C*FI1, and Sm-C*FI2, respectively. In Sm-C*α, periodicity incommensurate with the layer spacing was detected. The racemic compound version was also studied. The results are consistent with a “clock model” of the Sm-C* variant structures.
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U2 - 10.1103/PhysRevLett.81.1015
DO - 10.1103/PhysRevLett.81.1015
M3 - Article
AN - SCOPUS:0000679246
SN - 0031-9007
VL - 81
SP - 1015
EP - 1018
JO - Physical review letters
JF - Physical review letters
IS - 5
ER -