Hydroxypropyl Cellulose Adhesives for Transfer Printing of Carbon Nanotubes and Metallic Nanostructures
Hydroxypropyl Cellulose Adhesives for Transfer Printing of Carbon Nanotubes and Metallic Nanostructures
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DOI：
10.1002/smll.202004795
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发表时间：
2020-11-01
期刊：
影响因子：
13.3
通讯作者：
Mihi, Agustin
中科院分区：
文献类型：
--
作者：
Dore, Camilla;Dorling, Bernhard;Mihi, Agustin
转移印刷是大规模制造复杂器件结构的关键纳米制造技术之一。它提供了一种经济高效且高通量的途径，可将独立加工的材料集成到空间定制的架构中。此外，这种方法可以制造柔性和曲线器件，为新一代光学、电子和生物医学技术的制造铺平了道路。在这项工作中，羟丙基纤维素 (HPC) 膜用作转移印刷工艺的水溶性粘合剂，与传统的有机硅替代品相比，其性能和多功能性得到了改善。 HPC 的高水溶性和优异的机械性能有利于金属和碳纳米管 (CNT) 油墨的高产量转移印刷。在金属墨水的情况下，展示了银膜的无裂纹剥离以及不同几何形状的莫尔等离子体结构的简单制造。此外，HPC膜可用于转印不同厚度的碳纳米管薄膜，在可见光和近红外区域透明度高达77%，具有作为透明导电基材的潜在应用。最后，使用预图案化的 HPC 膜可以实现 CNT 的纳米级图案化，特征分辨率低至 1 μm。
Transfer printing is one of the key nanofabrication techniques for the large-scale manufacturing of complex device architectures. It provides a cost-effective and high-throughput route for the integration of independently processed materials into spatially tailored architectures. Furthermore, this method enables the fabrication of flexible and curvilinear devices, paving the way for the fabrication of a new generation of technologies for optics, electronics, and biomedicine. In this work, hydroxypropyl cellulose (HPC) membranes are used as water soluble adhesives for transfer printing processes with improved performance and versatility compared to conventional silicone alternatives. The high-water solubility and excellent mechanical properties of HPC facilitate transfer printing with high yield for both metal and carbon nanotubes (CNTs) inks. In the case of metal inks, crack-free stripping of silver films and the simple fabrication of Moire Plasmonic architectures of different geometries are demonstrated. Furthermore, HPC membranes are used to transfer print carbon nanotube films with different thicknesses and up to 77% transparency in the visible and near infrared region with potential applications as transparent conductive substrates. Finally, the use of prepatterned HPC membranes enables nanoscale patterning of CNT with feature resolution down to 1 mu m.