In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 37, No. 4R ( 1998-04-01), p. 1865-
Abstract:
A new measurement method for the flexoelectric coefficients e 11 and e 33 (corresponding to the splay and bend strain, respectively) of nematic liquid crystals (LCs) is proposed. The values of e 11 + e 33 and e 11 - e 33 can be determined by fitting experimental electrooptical characteristics of hybrid aligned nematic (HAN) cells with numerical simulations. For the measurement of e 11 + e 33 and e 11 - e 33 , a dc electric field is applied along the cell normal and along the cell surface, respectively. The measurements were carried out for two nematics, N -(4-methoxybenzylidene)-4 ′ - n -butylaniline (MBBA) and ZLI-4792. As a result, e 11 + e 33 =(-5.4 ±1.0) ×10 -11 C/m and e 11 - e 33 =(1.4 ±0.1) ×10 -11 C/m for MBBA, | e 11 + e 33 | ≤1.0 ×10 -11 C/m and e 11 - e 33 =(-1.5 ±0.1) ×10 -11 C/m for ZLI-4792 were obtained.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.37.1865
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1998
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
