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|Title: ||Optical investigations on the biaxial smectic-A phase of a bent-core compound|
|Authors: ||Wang, S.T.|
Reddy, Amaranatha R.
|Issue Date: ||21-Dec-2004 |
|Publisher: ||The American Physical Society|
|Citation: ||Physical Review E, 2004, Vol.70, 061705|
|Abstract: ||Several unique optical properties have been obtained from freestanding films of a bent-core compound. Our experimental results indicate the existence of the antiferroelectric biaxial smectic-A (Sm A) phase. The critical exponent associated with the biaxiality through the uniaxial–antiferroelectric biaxial Sm A transition has been measured to be 0.82±0.04, which is in good agreement with our theoretical calculation. Our theoretical advances further demonstrate that the critical behavior of the optical biaxiality with the order parameter being a vector is described by the secondary-order parameter of the three-dimensional XY model. We also observe a remarkable even–odd layering effect exhibited by the surface layers of freestanding films under an applied electric field (approximately 20 V/cm) in the film plane.|
|ISSN: ||ISSN 1550-2376 (online)|
|Alternative Location: ||http://link.aps.org/abstract/PRE/v70/e061705|
|Copyright: ||(2004) by the American Physical Society|
|Appears in Collections:||Research Papers (SCM)|
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