期刊
INSTRUMENTATION SCIENCE & TECHNOLOGY
卷 50, 期 6, 页码 589-603出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10739149.2022.2051182
关键词
Hexagonal boron nitride; molybdenum disulfide; surface plasmon resonance (SPR)
资金
- National Key R and D Program of China [2019YFC1708704]
- Fundamental Research Funds for the Central Universities [N180402023, N172002001, N182410001]
- LiaoNing Revitalization Talents Program [XLYC1907016]
- Liaoning Province Key R and D plan guidance project [2019JH8/10300109]
- National College Student Innovation and Entrepreneurship Training Program [202110145017]
A new gold film-molybdenum disulfide (MoS2)-hexagonal boron nitride (h-BN) three-layer sensing structure is reported, which enhances the sensitivity of the sensor by utilizing the properties of the materials. The prepared sensor shows significantly improved performance and has the advantages of a simple structure, low cost, high accuracy, and favorable specificity.
A new gold film-molybdenum disulfide (MoS2)-hexagonal boron nitride (h-BN) three-layer sensing structure is reported for sensing applications. The strong photoelectric conversion of MoS2 and the wide forbidden band of h-BN are used to enhance the surface plasmon resonance of the gold film which greatly enhance the sensitivity of the sensor. The Au film was deposited on the optical fiber by controlled vacuum sputtering to monitor the thickness. The MoS2 nanolayer was deposited on the surface of the gold film by electrostatic adsorption and the hexagonal boron nitride nanolayer was subsequently superimposed to complete the preparation. The sensitivity of the prepared sensor was increased to 3803.0 nm/RIU, which is 71.5% higher than for the common gold film sensor. These results confirmed that this approach significantly upgraded the sensor performance. The newly proposed SPR sensor performed well using a simple structure, is low-cost, offers high accuracy and favorable specificity, and may be used for small molecule detection for medical applications.
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