Abstract
Ultraviolet/visible photon transmission technique was applied to study the phase diagram of the BOPDOB-BOPOOB liquid crystal system. It was observed that the nematic-smectic A transition becomes first order, as the weight percentage of BOPDOB in the binary mixture is increased. The smectic A-C-A reentrance disappears when the BOPDOB percentage approaches 100 (pure BOPDOB). We also present the smectic A-C transition temperatures and the critical exponents β of the all samples. The values of the exponent are consistent with mean-field theory.
| Original language | English |
|---|---|
| Pages (from-to) | 2161-2167 |
| Number of pages | 7 |
| Journal | International Journal of Modern Physics B |
| Volume | 15 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 20 Jun 2001 |
Funding
We thank Professor A. Nesrullayev for supplying us with the liquid crystal material. The Perkin Elmer Lambda 2 UV/VIS spectrometer was kindly donated by Alexander Von Humboldt Foundation. This work was supported by the Research Fund of Istanbul Technical University, Grant No: 1426 and 1538.
| Funders | Funder number |
|---|---|
| Istanbul Teknik Üniversitesi | 1426, 1538 |