FERROELECTRIC LIQUID-CRYSTAL AND SOLID-PHASES FORMED BY STRONGLY INTERACTING DIPOLAR SOFT SPHERES

被引:147
作者
WEI, DQ
PATEY, GN
机构
[1] Department of Chemistry, University of British Columbia, Vancouver
来源
PHYSICAL REVIEW A | 1992年 / 46卷 / 12期
关键词
D O I
10.1103/PhysRevA.46.7783
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Molecular-dynamics simulation results are reported for systems of strongly interacting dipolar soft spheres. Calculations have been carried out along two isotherms and the structure of the liquid-crystal and solid phases obtained is described in detail. It is found that in addition to the ferroelectric nematic phase we previously reported [Phys. Rev. Lett. 68, 2043 (1992)], liquid crystals with columnar order can also be obtained. The model freezes to form a ferroelectric solid which is shown to have a tetragonal I crystal structure The influence of different boundary conditions upon the simulation results is also discussed.
引用
收藏
页码:7783 / 7792
页数:10
相关论文
共 22 条
[1]  
[Anonymous], COMPUTER SIMULATION
[2]  
[Anonymous], 1916, SITZUNGSBER PREUSS A
[3]  
ATKINS PW, 1986, PHYSICAL CHEM, P554
[4]   HEAD TAIL ASYMMETRY AND FERROELECTRICITY IN UNIAXIAL LIQUID-CRYSTALS - MODEL-CALCULATIONS [J].
BISCARINI, F ;
ZANNONI, C ;
CHICCOLI, C ;
PASINI, P .
MOLECULAR PHYSICS, 1991, 73 (02) :439-461
[5]  
Born, 1918, ANN PHYS LPZ, V55, P221
[6]  
DELEEUW SW, 1986, ANNU REV PHYS CHEM, V37, P245, DOI 10.1146/annurev.pc.37.100186.001333
[7]   SIMULATION OF ELECTROSTATIC SYSTEMS IN PERIODIC BOUNDARY-CONDITIONS .1. LATTICE SUMS AND DIELECTRIC-CONSTANTS [J].
DELEEUW, SW ;
PERRAM, JW ;
SMITH, ER .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1980, 373 (1752) :27-56
[8]  
DELEEUW SW, 1983, P R SOC LONDON A, V388
[9]   LIQUID-CRYSTAL PHASE-DIAGRAM OF THE GAY-BERNE FLUID [J].
DEMIGUEL, E ;
RULL, LF ;
CHALAM, MK ;
GUBBINS, KE .
MOLECULAR PHYSICS, 1991, 74 (02) :405-424
[10]   NON-NEWTONIAN MOLECULAR-DYNAMICS [J].
EVANS, DJ ;
MORRISS, GP .
COMPUTER PHYSICS REPORTS, 1984, 1 (06) :297-343