Herber Marcel, Lengle Daniel, Valandro Silvano R, Wehrmeister Moritz, Hill Eric H
Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany.
The Hamburg Center for Ultrafast Imaging (CUI), Luruper Chausee 149, 22761 Hamburg, Germany.
Nano Lett. 2023 Jul 26;23(14):6308-6314. doi: 10.1021/acs.nanolett.3c00617. Epub 2023 Apr 19.
MXenes represent a novel class of 2D materials with unique properties and have great potential for diverse applications in sensing and electronics; however, their directed assembly at interfaces has not yet been achieved. Herein, the plasmonic heating of MXenes was exploited to achieve the controlled deposition of MXene assemblies via a laser-directed microbubble. The influence of various factors such as solvent composition, substrate surface chemistry, MXene concentration, and laser fluence was investigated, establishing the optimal conditions for rapid patterning with good fidelity. Printed MXene assemblies showed good electrical conductivity and plasmonic sensing capabilities and were able to meet or exceed the state of the art without additional postprocessing steps. This represents the first study of a directed approach for microfabrication using MXenes and lays the foundation for future work in optically directed assembly of MXenes and MXene-based nanocomposites at interfaces toward sensors and devices.
MXenes是一类具有独特性质的新型二维材料，在传感和电子领域具有广泛的应用潜力；然而，它们在界面处的定向组装尚未实现。在此，利用MXenes的等离子体加热通过激光引导微泡实现MXene组件的可控沉积。研究了溶剂组成、基底表面化学、MXene浓度和激光能量密度等各种因素的影响，确定了高保真快速图案化的最佳条件。印刷的MXene组件表现出良好的导电性和等离子体传感能力，无需额外的后处理步骤就能达到或超过现有技术水平。这是首次对使用MXenes进行微制造的定向方法进行研究，为未来在界面处对MXenes和基于MXene的纳米复合材料进行光学定向组装以用于传感器和器件奠定了基础。
