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The expressions of average refractive index in a helix pitch of ferroelectric liquid crystal(FLC) were derived by theoretical approximation computation of the helix structure at chiral smectic C phase of FLC. A conclusion that FLC molecules in a helix pitch as a whole can be considered as a model of nematic liquid crystal in terms of the expressions of average refractive index was obtained. When the thickness of FLC with a vertical alignment along the helical axis is integer times long as the helix pitch, FLC molecules can be considered as a group composed of nematic liquid crystal models. The comparisons of experiment results of ZLI-3654 FLC with 5CB nematic liquid crystal confirmed the above conclusion. The theory and experiment are in good agreement. Theoretical guidance and a deeper understanding can be provided by this theory for preparation of deformed helix FLC and vertical alignment deformed helix FLC devices, as well as application of ferroelectric liquid crystal.
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Keywords:
- ferroelectric liquid crystal /
- helix pitch /
- average refractive index /
- nematic liquid crystal
[1] [1]Zheng Z G, Ma J, Song J, Liu Y G, Hu L F, Xuan L 2007 Acta Phys. Sin. 56 15 (in Chinese) [郑致刚、马骥、宋静、刘永刚、胡立发、宣丽 2007 物理学报 56 15]
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[6] [6]Wang Q H, Cheng J B 2005 Acta Photon. Sin. 34 357 (in Chinese)[王琼华、成建波 2005 光子学报 34 357]
[7] [7]Wu P C, Wu J W 2007 J. Appl. Phys. 101 104513
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[9] [9]Zhu S Q, Pan W, Wang M Y 2005 Acta Photon. Sin. 34 218 (in Chinese)[朱思奇、潘炜、王梦遥 2005 光子学报 34 218]
[10] ]Kim Y J, Kim K S, Kim Y B 2002 Ferroelectrics 278 191
[11] ]Rieker T P, Clark N A, Smith G S, Parmar D S, Sirota E B, Safinya C R 1987 Phys. Rev. Lett. 59 2658
[12] ]Wang J M, Kim Y J, Chang J K , Kim K S 2002 Ferroelectrics 277 185
[13] ]Sawatari N, Okabe M, Ishikawa M, Harada R, Egashira N 2007 SID Digest. 1397
[14] ]Haase W, Podgornov F, Pozhidaev E 2002 Proc. SPIE 4481 17
[15] ]Michael D W, Rohini T V, Michael J O, Beth R, Claus E 1992 Proc. SPIE 1665 176
[16] ]Pozhidaev E P 2001 Proc. SPIE 4511 92
[17] ]Kim D W, Yu C J, Lim Y W, Na J H, Lee S D 2005 Appl. Phys. Lett. 87 051917
[18] ]You D H, Yu C J, Lee S D 2002 Ferroelectrics 278 233
[19] ]McMurdy J W, Crawford G P 2006 Appl. Phys. Lett. 89 081105
[20] ]Miyagi J N1991 U.S. Patent 5046830
[21] ]Fei C H, Peng Z H, Lü F Z, Zhang L L, Yao L S, Xuan L 2006 Chin. Phys. Lett. 23 3029
[22] ]MacGregor A R 1989 J. Opt. Soc. Am. A 6 1493
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[1] [1]Zheng Z G, Ma J, Song J, Liu Y G, Hu L F, Xuan L 2007 Acta Phys. Sin. 56 15 (in Chinese) [郑致刚、马骥、宋静、刘永刚、胡立发、宣丽 2007 物理学报 56 15]
[2] [2]Yang P B, Cao L G, Hu W, Zhu Y Q, Guo Q, Yang X B 2008 Acta Phys. Sin. 57 285(in Chinese) [杨平保、曹龙贵、胡巍、朱叶青、郭旗、杨湘波 2008 物理学报 57 285]
[3] [3]Zheng Z G, Li W C, Liu Y G, Xuan L 2008 Acta Phys. Sin. 57 7344 (in Chinese) [郑致刚、李文萃、刘永刚、宣丽 2008 物理学报 57 7344]
[4] [4]Yin J L, Huang X G, Liu S H, Hu S J 2006 Acta Phys. Sin. 55 5268 (in Chinese) [殷建玲、黄旭光、刘颂豪、胡社军 2006 物理学报 55 5268]
[5] [5]Ding H B, Pang W N, Liu Y B, Shang R C 2005 Acta Phys. Sin. 54 4097 (in Chinese) [丁海兵、庞文宁、刘义保、尚仁成 2005 物理学报 54 4097]
[6] [6]Wang Q H, Cheng J B 2005 Acta Photon. Sin. 34 357 (in Chinese)[王琼华、成建波 2005 光子学报 34 357]
[7] [7]Wu P C, Wu J W 2007 J. Appl. Phys. 101 104513
[8] [8]Clark N A , Lagerwall S T 1980 Appl. Phys. Lett. 36 899
[9] [9]Zhu S Q, Pan W, Wang M Y 2005 Acta Photon. Sin. 34 218 (in Chinese)[朱思奇、潘炜、王梦遥 2005 光子学报 34 218]
[10] ]Kim Y J, Kim K S, Kim Y B 2002 Ferroelectrics 278 191
[11] ]Rieker T P, Clark N A, Smith G S, Parmar D S, Sirota E B, Safinya C R 1987 Phys. Rev. Lett. 59 2658
[12] ]Wang J M, Kim Y J, Chang J K , Kim K S 2002 Ferroelectrics 277 185
[13] ]Sawatari N, Okabe M, Ishikawa M, Harada R, Egashira N 2007 SID Digest. 1397
[14] ]Haase W, Podgornov F, Pozhidaev E 2002 Proc. SPIE 4481 17
[15] ]Michael D W, Rohini T V, Michael J O, Beth R, Claus E 1992 Proc. SPIE 1665 176
[16] ]Pozhidaev E P 2001 Proc. SPIE 4511 92
[17] ]Kim D W, Yu C J, Lim Y W, Na J H, Lee S D 2005 Appl. Phys. Lett. 87 051917
[18] ]You D H, Yu C J, Lee S D 2002 Ferroelectrics 278 233
[19] ]McMurdy J W, Crawford G P 2006 Appl. Phys. Lett. 89 081105
[20] ]Miyagi J N1991 U.S. Patent 5046830
[21] ]Fei C H, Peng Z H, Lü F Z, Zhang L L, Yao L S, Xuan L 2006 Chin. Phys. Lett. 23 3029
[22] ]MacGregor A R 1989 J. Opt. Soc. Am. A 6 1493
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