Atomic-Thin WS<sub>2</sub> Kirigami for Bidirectional Polarization Detection.
basic_science · Level V
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- Record sourced from PubMed, PMID 39108048.
- Also identified by DOI 10.1002/adma.202407066.
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Abstract
The assembly and patterning engineering in two-dimensional (2D) materials hold importance for chip-level designs incorporating multifunctional detectors. At present, the patterning and stacking methods of 2D materials inevitably introduce impurity instability and functional limitations. Here, the space-confined chemical vapor deposition method is employed to achieve state-of-the-art kirigami structures of self-assembled WS<sub>2</sub>, featuring various layer combinations and stacking configurations. With this technique as a foundation, the WS<sub>2</sub> nano-kirigami is integrated with metasurface design, achieving a photodetector with bidirectional polarization-sensitive detection capability in the infrared spectrum. Nano-kirigami can eliminate some of the uncontrollable factors in the processing of 2D material devices, providing a freely designed platform for chip-level multifunctional detection across multiple modules.