Solid Free Forming of CNT self-assembled micro-structures

本研究的目的是开发一种碳纳米管自组装微结构的直接图案转移策略。利用生物分子脱氧胆酸钠(SDC)成功地实现了碳纳米管(CNTs)的高效个体增溶。通过控制悬浮液中SDC和CNT的浓度，增强了CNT胶体的粘弹响应，得到了水凝胶。水凝胶在拉伸流动下表现出独特的塑性变形，形成细长的长丝。我们已经成功地利用该水凝胶作为可打印墨水进行了碳纳米管图案的定向自组装。

The aim of this study was to develop a strategy for direct pattern transferring of CNT self-assembled micro-structures. Efficient individual solubilization of carbon-nanotubes(CNTs) was successfully achieved by using biological molecule of sodium deoxycholate(SDC). By controlling the concentrations of SDC and CNT in suspension, the viscoelastic response of CNT colloid was enhanced, and the hydrogel was obtained. The hydrogel showed the unique plastic deformation under elongational flow, resulting in thin and long filaments. We have successfully conducted the directed self-assembly of CNT patterns using the hydrogel as a printable ink.