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nematic adj.【物理學】(液晶中細長分子的位置)向列的。

nemato-

The structure and properties of interfacial region of liquid crystals ( i . e the layers adjacent to a solid walls ) are obviously affected by the solid walls . therefore , the investigations of interface properties of liquid crystals have significance of theory and extensive prospect of application in this paper , the molecular field theory and a two - particle cluster theory are presented to study thin nematic liquid crystal films confined by two type solid substrates , respectively 目前液晶被廣泛用于光電顯示器中,固體界面對液晶界面層(鄰近基板表面的液晶層)的結構、性質有較大的影響,因此,對液晶與固體表面間的界面物理性質和規律研究,具有重要的理論意義和廣闊的應用前景。

With a voltage operating , the flexoelectric effect for a nematic liquid crystal ( nlc ) cell has been investigated theoretically with an analytical approach , and the absorption of ions has not been taken into account . the equations and the boundary conditions of the nlc tilt angle 6 have been deduced 文中假定液晶在界面處沒有離子吸附,導出了電場作用下指向矢傾角滿足的方程和邊界條件,以及撓曲電效應引起的表面能,該表面能在上下基板處形式相同但是符號相反。

Our main conclusions are that surface polar interaction can give rise to a transition from a high temperature homogeneous alignment to a low temperature hometropic alignment , that if the strength of the surface polar interaction is weaker than the one of surface dispersion interaction , the homogeneous alignment of the nematic is always stable . part ii : a two - particle cluster theory is presented to study the effect of a solid bounding surface on the nlcs formed by polar molecules 獲得的重要結論是:摩擦基板與液晶分子間的表面極性相互作用能引起基板間向列相液晶分子指向矢出現高溫沿面到低溫垂面的轉變;當表面極性作用強度弱于表面色散作用強度時,基板間向列相液晶分子平行于基板的排列非常穩定。

In the case of the unsaturated alcohols , such as hydroxyethyl acrylate ( hea ) , the paes showed the photo - alignment property to the nematic liquid crystals with the pretilt angle of 0 . 60 ? secondly , three kinds of fluoro - containing diamine monomers were prepared via the reduction reactions of the corresponding dinitro compounds , which were synthesized via the nitro nucleophilic displacement reactions of 3 , 5 - dinitro - 5 - trifluoromethyl benzene with diphenol compounds 此外,本論文還設計并通過3 , 5 -二硝基三氟甲苯與二酚化合物的硝基親核取代反應制備了二硝基化合物,將其還原最終合成了三種間位取代的含氟二胺單體tfpda 、 tfbpda與tfmda ,并對其聚合行為進行了研究。

Based on the requirement and target of the projects , firstly , pcf bragg grating are investigated theoretically and experimentally . moreover , the effects of filling high refractive index material ( nematic liquid crystal , nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ) , farther , several novel pcfs are proposed and designed . lastly , we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser , which integrate all performances of broad - band tunable wavelength , uniform output power spectrum , high repeat frequency and high average power to together 本論文選題于國家973 、 863以及國家自然科學基金等項目,結合課題的要求和主要目標,在對光子晶體光纖( pcfs )傳輸特性研究的基礎上,首先對光子晶體光纖光柵進行了理論和實驗研究;然后,采用平面波展開法和有限單元法分析了在光纖的空氣孔中填充高折射率液晶對光纖傳導機制和傳輸特性的影響,提出并設計了幾種新型光子晶體光纖;最后,提出并研制成功連續可調諧、輸出功率譜均衡的全光纖化、高功率包層泵浦鉺鐿共摻光纖激光器實驗樣機。

The threshold and saturation voltage are important technology parameters in lcd . in this paper , by linearization method of the continuum theory of nematic liquid crystal , we show the analyzed results of threshold and saturation voltage of ips mode with tilt angle and weak surface anchoring conditions 在液晶顯示器中,閾值電壓和飽和電壓是液晶顯示器的重要工藝參數,本文從連續體理論出發,同樣利用線性化處理的方法,給出弱錨定邊界條件下,有預傾角的ips型盒的閾值和飽和電壓的解析結果。

2 , upon heating to their respective melting temperature , all the compounds above went to liquid crystal phase . the typical chiral smectic c phase lined texture and finger print texture , smectic fan texture and broken fan shaped texture , nematic schlieren texture schlieren texture and ball grandle texture , paramorphosis texture can be observed 實驗結果表明:一,化合物2 、 4 、 16 、 17和18均具有熱致液晶性;二,以上化合物加熱至各自的熔點以上都能形成液晶態,在液晶態可以觀察到新的席夫堿型液晶冠醚的合成與表征手性近晶c相的層線織構和指紋織構。

As a new technology and new mode in the next generation rear projection tv and hdtv , reflective lcd is the best way to realize bright light output and high contrast ratio image . in the forth chapter , the physical characteristics and electronic - optics behavior are studied , as well as the working principle and properties of lcds . following the continuum theory , the detail formulas for calculating the director alignment of perpendicular alignment and twist nematic lcds are given 高亮度、高分辨率、高對比度以及體積小、重量輕、色彩豐富、圖像逼真始終是投影顯示技術的發展方向,在本部分,從亮度、分辨率、重量和芯片闡述了投影機的技術發展趨勢,得出結論:反射式液晶投影顯示是實現高分辨率高亮度投影顯示的最佳方案,也是新一代背投電視尤其是背投hdtv的最佳方案。

The chiral compounds synthesized in the project have an unsaturated double bond , which can be mixed with polymerizable nematic liquid crystal compounds , and the resulting mixture can be polymerized to form an optical film having cholesteric liquid crystal texture 具有可聚合基之旋光性化合物可添加于可聚合型向列型液晶單體中,聚合成具有膽固醇相、反射特定波長之光學薄膜,且較少用量之高螺旋扭轉力性質之旋光性化合物即可配出特定螺距之膽固醇液晶紋理。

In this paper we demonstrated electro - optical ( eo ) characteristics of amorphous hybrid twisted nematic mode ( a - htn mode ) that has promise of possibly improving not only the viewing angle , but also manufacturing process , and reducing the manufacturing expenses 本文提出了一種新型的液晶顯示模式-無序的混合扭曲向列模式( a - htn ) ,這種顯示模式不僅可以改善視角特性、簡化lcd的制作過程,而且能夠降低lcd的制作成本。

In this paper , we introduce quantum theory into the liquid crystals in order to research the collective effect ( i . e . the physics effect produced by many - body effect and collective excitation ) . in this way , we research the microscopic theory of nematic phase and cholesteric phase 為了探索其集體效應(多體效應以及集體激發導致的物理效應) ,本文將量子理論引入到液晶體系,研究向列相和膽甾相的微觀理論。

This machine adopt numeral pipe and nematic complex show which means have many functions and characteristics such as high brightness to satisfy long position machine farness oberve and letter hint to convenience and shortcut with operate and study etc 花樣可在50 % - 200 %范圍,以1 %為單間位對花樣進行放大或縮小,或以1為單位,對花樣進行任意角度旋轉及鏡像。

The property of freedericksz transition and the problem of bistable state for weak anchoring nematic liquid crystal ( nlc ) cell in the surface physics of liquid crystal ( lc ) have been one hot point of current lc science 液晶表面物理中弱錨定向列液晶盒的freedericksz轉變的性質以及與此相關的雙穩態問題是目前液晶科學的一個熱點問題。

In the elasticity theory of nematic liquid crystals ( nlc ) , physics principles are described by variation problem initially . so in this paper we use finite elements method to solve this variation problem directly 在液晶的彈性理論中物理規律的數學描述最初是變分問題,因此本文通過有限元方法直接對這一變分問題進行數值求解。

Psc - 11 displays a nematic and two smectic enantiotropic mesophases , which are of interest for application in thermal controlling devices that might be turned on and off by external electric or magnetic regulation 這種性能應用于熱控制裝置很有意義,即可利用外界溫度調節來開和關這一裝置,這一性能在促進傳遞方面尚未見報導。

Recognizing that the vesicle consisting of amphiphiles bilayer membrane is just like a nematic liquid crystal cell , helfrich gave the elastic energy of the fluid membrane and the shape equation 雙親分子所構成的膜泡,其行為和性質類似于向列相液晶。 helfrich通過與液晶的類比得出了流體膜的彈性能量以及膜泡的形狀方程。

The property of freedericksz transition and the bistable state for nematic liquid crystal ( nlc ) cell in the surface physics of liquid crystal ( lc ) have been one hot point of current lc science 液晶表面物理中弱錨定向列液晶盒的freedericksz轉變的性質以及與此相連的雙穩態問題是目前液晶科學的一個熱點問題。

Many nematic liquid crystals show very large birefringence and good transparency in both near - uv , visible , and ir regions ( except in the vicinities of some resonant electronic and molecular vibrational absorption bands ) 許多液晶在紫外、可見光和紅外都具有較大的雙折射率和良好的透射性。 ( 2 )調諧電壓低。

In addition to expanding existing capacity , the group also plans to invest in new facilities for stn ( super twisted nematic ) lcds , which are widely used on telecoms and pc products 除擴充原有產能外,集團并計劃投資建立新的stn (超扭曲向外型)液晶顯示屏生產設施;此產品廣泛應用于電訊及電腦產品。