Engineered sculptured nematic thin films
Engineered sculptured nematic thin films
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工程雕刻向列薄膜
DOI：
10.1116/1.580621
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
A. Lakhtakia
中科院分区：
文献类型：
--
作者：
R. Messier;T. Gehrke;C. Frankel;V. Venugopal;W. Otaño;A. Lakhtakia
在蒸发沉积系统中，通过控制衬底表面相对于输入蒸汽方向的角度关系，可以设计薄膜的形态。当衬底绕垂直于蒸气方向的轴旋转时，在低吸附原子迁移率条件下会产生雕刻的向列相薄膜。在室温衬底上沉积了氟化镁薄膜，得到了从人字形到类似S和C形的连续变化的柱状形貌。在局部柱状方向相对于衬底平面的最小夹角χM约为30°的范围内，特定的形貌几乎是无限的。
By controlling the angular relation of the substrate surface with respect to the incoming vapor direction in an evaporation deposition system, it is possible to engineer the morphology of thin films. Sculptured nematic thin films result under low adatom mobility conditions when the substrates are rotated about an axis perpendicular to the vapor direction. Thin films of MgF2 were deposited onto room temperature substrates to produce columnar morphologies ranging from chevron structures to continuously varied structures resembling S shapes and C shapes. The specific morphologies are virtually unlimited within the restriction that the minimum angle χM of the local columnar direction with respect to the substrate plane is about 30°.