Ultrasensitive plasmonic biosensors based on halloysite nanotubes/MoS2/black phosphorus hybrid architectures
Ultrasensitive plasmonic biosensors based on halloysite nanotubes/MoS2/black phosphorus hybrid architectures
复制标题
基于埃洛石纳米管/MoS2/黑磷混合结构的超灵敏等离子体生物传感器
DOI：
10.1039/c9tc00271e
复制
发表时间：
2019-03
影响因子：
6.4
通讯作者：
Yali Tian
中科院分区：
文献类型：
--
作者：
Guangyi jia;Zhenxian Huang;Yongliang Zhang;Zhiqiang Hao;Yali Tian
层状黑磷（BP）由于其适度的带隙和显著的面内各向异性而引起了人们极大的研究兴趣。特别是，其在可见光区的光学双折射和生物组织中的低毒性使BP成为生物光子器件的有希望的候选者。在此，我们提出了一种高度各向异性，超灵敏的等离子体生物传感器通过垂直堆叠埃洛石纳米管（HNTs），二硫化钼和BP原子层的金膜。我们表明，所提出的生物传感器超越以前报道的生物传感器（仅由2D材料和金属薄膜）的角度和相位检测灵敏度。特别是，由400 nm HNTs/1 L MoS 2/3 L BP/40 nm Au组成的生物传感器呈现的角和相位检测灵敏度分别高达SA = 77.0548/RIU和Sp = 1.60595 105/RIU。这些SA和Sp值显示出与仅用2D材料和金属膜用于等离子体生物传感器的那些相比的127和1.51 × 104的最高增强倍数。HNT传感性能可能与HNT的优异特性（例如，良好的生物相容性、带负电荷的表面和大的表面积）、激子共振增强的由MoS 2诱导的局部场以及功函数差驱动的电荷转移。利用BP的光学各向异性，该等离子体生物传感器具有光学可调的检测灵敏度。此外，还详细讨论了表面等离子体共振角的演变，以及角和相位检测灵敏度与生物传感器结构参数，如HNTs，MoS 2，BP和金膜的厚度。
Layered black phosphorus (BP) has triggered enormous research interest due to its moderate band gap and pronounced in-plane anisotropy. In particular, its optical birefringence in the visible region and low toxicity in biological tissues make BP a promising candidate in biophotonic devices. Herein, we proposed a highly anisotropic, ultrasensitive plasmonic biosensor via vertically stacking halloysite nanotubes (HNTs), MoS2 and BP atomic layers on gold films. We show that the proposed biosensor surpasses previously reported biosensors (merely consisting of 2D materials and metal films) in terms of both the angular and phase detection sensitivities. In particular, the biosensor composed of 400 nm HNTs/1L MoS2/3L BP/40 nm Au presents angular and phase detection sensitivities up to SA = 77.0548 per RIU and Sp = 1.60595 105 per RIU, respectively. These SA and Sp values show the highest enhanced folds of 127 and 1.51 104 compared to those with only 2D materials and metal films used in plasmonic biosensors. The ultrahigh sensing performance could be closely related to the excellent features of HNTs (e.g., good biocompatibility, negatively charged surface, and large surface area), excitonic resonance enhanced local field induced by MoS2, and the work function difference driven charge transfer. Benefiting from the optical anisotropy of BP, the proposed plasmonic biosensor exhibits optically tunable detection sensitivity. Additionally, evolution of surface plasmon resonance angles, and angular and phase detection sensitivities with biosensor structural parameters such as the thicknesses of HNTs, MoS2, BP, and gold films is also discussed in detail.
登录
查看更多内容
影响因子：
27.8
作者：
Batmunkh, Munkhbayar;Bat-Erdene, Munkhjargal;Shapter, Joseph G.
通讯作者：
Shapter, Joseph G.
影响因子：
10.9
作者：
Yan Zhou;Xiaojian Wang;Xiangdong Liu;Dekun Sheng;Fance Ji;Li Dong;Shaobin Xu;Haohao Wu;
通讯作者：
Yan Zhou;Xiaojian Wang;Xiangdong Liu;Dekun Sheng;Fance Ji;Li Dong;Shaobin Xu;Haohao Wu;
DOI：
10.1039/c7cp07662b
发表时间：
2018-02
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Zhiqiang Zhao;Hang Yin;K. Cai;Wanqi Zhou
通讯作者：
Zhiqiang Zhao;Hang Yin;K. Cai;Wanqi Zhou
影响因子：
27.1
作者：
Xiaomu Wang;Shoufeng Lan
通讯作者：
Xiaomu Wang;Shoufeng Lan
影响因子：
8.4
作者：
Zeng, Shuwen;Hu, Siyi;Yong, Ken-Tye
通讯作者：
Yong, Ken-Tye