Quantification of ion trapping effect of carbon nanomaterials in liquid crystals
Quantification of ion trapping effect of carbon nanomaterials in liquid crystals
复制标题
液晶中碳纳米材料离子捕获效应的量化
DOI：
10.1016/j.matlet.2009.11.049
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
W. Shih
中科院分区：
文献类型：
--
作者：
Chian;W. Shih
我们通过电容-电压响应分析确定了碳纳米材料在液晶中的离子捕获系数。离子捕获系数定义为每种碳纳米材料捕获杂质离子的能力，可作为选择合适的碳纳米材料作为液晶掺杂剂的参考值。表征的纳米材料分别包括多壁碳纳米管、碳纳米纤维、碳纳米线圈、单壁碳纳米管和富勒烯。研究发现，管长为5~15μm的多壁碳纳米管具有最大的离子捕获系数，因此是抑制液晶滞后的最佳掺杂剂。
We have determined the ion trapping coefficients of carbon nanomaterials in liquid crystals through the analysis of capacitance–voltage response. The ion trapping coefficient is defined as the ability to trap impurity ions for each carbon nanomaterial and can be used as a referable value to select proper carbon nanomaterials as dopants in liquid crystals. The characterized nanomaterials include multi-wall carbon nanotubes, carbon nanofibers, carbon nanocoils, single-wall carbon nanotubes and fullerenes, respectively. It is found that the multi-wall carbon nanotubes with a tube length of 5–15μm have the largest ion trapping coefficient and hence serve as the best dopant to suppress the liquid crystal hysteresis.