液晶配向對液晶薄膜放電圖形及電光性質之影響研究
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(3) Alignment effect on dielectric breakdown and electro-optical properties of liquid crystal thin films NSC 87-2112-M-009-010 86 8 1
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(5) !"#$%&. studied.. '()* +, - . /01 Hele-Shaw 2345 62789:;< =>/?07@ ABC5 DEFG H./0I'(G;<JKL15 62 789I '(MNOPQR STUN+,D VWXYZ[\]7[\^:OP_?` /aMNbcde SI'(f<g[\ h7YiLjklQRm S7no p:Nqr+,stXuvwxI. Keywords: Threshold voltage, Liquid crystals, Hele-Shaw cell, dielectric breakdown pattern, fiber coupler, liquid crystal {"|Pl}7 ~#'(7 J (A)+,./15 6789: (B)~+,XYZ[\]#:+,./ 1CX89I~#"'( 1I. +y,z"234"5 62" YZ[\]"+,"`/. (A) '(J5 67 7de[Ref.1-2]IP+,- H ¡jk¢£jC./07¤¥:¦N +,stl§¨@ ¥Xx75 ©ªE _?7I«¬`/7.1+,AB7. /0®TU:N)*@ AB7./0l 5 627¯°E7&}7I± Q:KL1@ ¥5 62789GE' (¦;<7I (B) '(1N+,DVWXYZ[\] ®©! ²[Ref.4]³¬´@ µ/ p7+,DVW:¶·¸[\^¹º»¼ 7YZ[\]½¢³¬¾@ µ/p+, DVW:¿¶·¸[\^¹À»¼7YZ [\]I'(;<~_?Á^23 Lw:YZ[\][\^X£jI1+. Abstract Applying dc voltages to the Hele-Shaw liquid crystal cells with two pieces of glass substrate coated with various surface alignment materials, we study the orientational effect of liquid crystals to the dielectric breakdown patterns. We have also studied the temperature effect to the dielectric breakdown patterns. We study the variable fiber coupler with liquid crystal interlayer controlled by varying the applied voltages. In this report we further show that the threshold voltage can be significantly reduced by changing the alignment orientations of the liquid crystals. The phase difference between the applied voltage and the coupled light intensity is also 1.
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(13) (a)18523(b)14627 o. wx$y 1. Ru-Pin Pan,Chia-Rong Sheu and L. Lam, Chaos, Solitons & Fractals vol. 6, pp.495-509, 1995. 2. z{|,”ÑR ø5 6X-} ”, ¦ ~g$, 1996. 3. Lui Lam and Rocco Pochy, Computers in Physics, vol. 7, p.534, 1993. 4. , ~g$, The optical fiber coupler using liquid crystal layer and its time response to the applied ac voltage,1997.. ~m SXÅ:P h]&76 MFig.6:&.D ×:Å.DY×O MN 7 óÈ1"iÁÈ-[\]jY×7Á^DQR S7 iI2"ÇîÈ--[\]jY×lQ R S×Xxk~l!nop: lÁ ^ºRnoÆÇmMFig.7:no n op"po QR S7Á^OI3"q ÀÈ--[\]jY×Cñòζ lÁ^ºR¢ÀÎI. Fig.6
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