光学微纤维上的绿色石墨烯保护覆盖层：延长器件寿命。

Novikova Anastasia, Katiyi Aviad, Halstuch Aviran, Karabchevsky Alina

School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel.

Nanomaterials (Basel). 2022 Aug 24;12(17):2915. doi: 10.3390/nano12172915.

Optical microfibers find new applications in various fields of industry, which in turn require wear resistance, environmental friendliness and ease of use. However, optical microfibers are fragile. Here we report a new method to prolong the microfiber lifetime by modifying its surface with green-extracted graphene overlayers. Graphene films were obtained by dispergation of shungite mineral samples in an aqueous medium. For this, we tapered optical fibers and sculptured them with graphene films mixed with gold nanoparticles. We observed that due to the surface modification the lifetime and survivability of the microfiber increased 5 times, as compared to the bare microfiber. The embedded gold nanoparticles can also be utilized for enhanced sensitivity and other applications.

光学微纤维在各个工业领域有新的应用，这反过来又要求其具有耐磨性、环境友好性和易用性。然而，光学微纤维很脆弱。在此，我们报告一种通过用绿色提取的石墨烯覆盖层修饰其表面来延长微纤维寿命的新方法。石墨烯薄膜是通过将水镁石矿物样品在水性介质中分散而获得的。为此，我们将光纤拉锥并用与金纳米颗粒混合的石墨烯薄膜对其进行雕刻。我们观察到，由于表面改性，与裸微纤维相比，微纤维的寿命和存活率提高了5倍。嵌入的金纳米颗粒还可用于提高灵敏度和其他应用。