Two-dimensional (2D) van der Waals layered materials possess innate advantages as integrable sensors, due to their thinness, flexibility, and sensitivity. They can be seamlessly integrated onto surfaces with different geometries where detection for near-field signal is desired. In this study, we develop a device transfer technique to integrate device assemblies based on 2D materials onto an arbitrary smooth surface. Such technique utilizes a sacrificial polymer underlayer and achieves clean and nondestructive full device transfer. For demonstration, we transferred a complete 2D multilayer InSe photodetector device onto a stripped optical fiber. Due to the extreme vicinity of the 2D photodetector with the fiber core, the device can effectively couple with the evanescent field and accurately detect information transmitted inside the optical fiber. In addition, these super thin flexible device assemblies can be integrated onto the fibers themselves to non-invasively monitor the optical fiber performance. The demonstration of optically coupled, conformal 2D devices on substrates of different form factors can enable a variety of near-field optical and sensing applications.

中文翻译：

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光纤上的近场耦合可积分二维InSe光电传感器

二维（2D）范德华分层材料由于其薄，柔韧性和灵敏性而具有可集成传感器的先天优势。它们可以无缝集成到具有不同几何形状的表面上，需要检测近场信号。在这项研究中，我们开发了一种设备转移技术，可将基于2D材料的设备组件集成到任意光滑表面上。这种技术利用了牺牲聚合物底层，并实现了干净无损的完整器件转移。为了演示，我们将完整的2D多层InSe光电探测器设备转移到剥离的光纤上。由于2D光电探测器与光纤纤芯的距离非常近，因此该设备可以有效地与with逝场耦合，并准确地检测在光纤内部传输的信息。此外，这些超薄柔性设备组件可以集成到光纤本身上，以非侵入式方式监控光纤性能。在不同形状因数的基板上进行光耦合共形2D器件的演示可以实现各种近场光学和传感应用。