Abdelsalam Hazem, Corona Domenico, Payod Renebeth B, Sakr Mahmoud A S, Abd-Elkader Omar H, Zhang Qinfang, Saroka Vasil A
School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, P.R. China.
Theoretical Physics Department, National Research Centre, Giza, 12622 Dokki, Egypt.
Nano Lett. 2025 Jul 2;25(26):10594-10602. doi: 10.1021/acs.nanolett.5c02355. Epub 2025 Jun 18.
Two-dimensional topological insulators with propagating topological edge states are promising for dissipationless transport, while their one-dimensional analogs are capable of hosting localized topological junction states that are mainly envisaged for quantum computing and spintronics. Here, in contrast, we propose to use the localized nature of topological junction states for sensing applications. We report a systematic topological classification of a wide class of graphene nanoribbons represented by already synthesized extended chevron species. Using this classification, we theoretically model a double junction transport that shows an enhanced interaction with the NO molecule. Our results show that topological junction states of nanoribbons can open an avenue for topological sensing and junction-assisted chemistry applications.
具有传播拓扑边缘态的二维拓扑绝缘体有望实现无耗散输运，而其一维类似物则能够承载局域化的拓扑结态，这些态主要用于量子计算和自旋电子学。相比之下，本文中我们提议将拓扑结态的局域化特性用于传感应用。我们报告了一类由已合成的扩展V形物种表示的宽范围石墨烯纳米带的系统拓扑分类。利用这一分类，我们从理论上模拟了一种双结输运，该输运显示出与NO分子的增强相互作用。我们的结果表明，纳米带的拓扑结态可为拓扑传感和结辅助化学应用开辟一条途径。
