Sensitivity-enhanced surface plasmon resonance sensor utilizing a tungsten disulfide (WS_2) nanosheets overlayer

查看全文 作　　者：HAO [1]WANG;HUI [1,2]ZHANG;JIANGLI [1,3]DONG;SHIQI [1]HU;WENGUO [4]ZHU;WENTAO [4]QIU;HUIHUI [1]LU;JIANHUI [1,4]YU;HEYUAN [1,4]GUAN;SHECHENG [3]GAO;ZHAOHUI [1,5]LI;WEIPING [3]LIU;MIAO [2]HE;JUN [1]ZHANG;ZHE [1,4]CHEN;YUNHAN [1,3,4]LUO

机构地区：[1]Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Jinan University;[2]School of Physics and Optoelectronic Engineering,Guangdong University of Technology;[3]Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes,Jinan University;[4]Key Laboratory of Visible Light Communications of Guangzhou,Jinan University;[5]State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology,Sun Yat-sen University

出　　处：《Photonics Research》索引2018年第6卷第6期,共7页

基　　金：National Natural Science Foundation of China(NSFC)(61575084,61705087,61705046,61361166006,61401176,61405075,61475066,61505069);Natural Science Foundation of Guangdong Province(2015A030313320,S2013050014606,2014A030313377,2014A030310205,2015A030306046,2016A030311019,2016A030313079,2016A030310098);Science and Technology Projects of Guangdong Province(2017A010101013,2012A032300016,2014B010120002,2014B010117002,2015A020213006,2015B010125007,2016B010111003,2016A010101017);Science and Technology Project of Guangzhou(201707010500,201506010046,201607010134,201605030002,201610010026,201604040005);China Postdoctoral Science Foundation(2017M612608) 摘　　要：Tungsten disulfide(WS_2), as a representative layered transition metal dichalcogenide(TMDC) material, possesses important potential for applications in highly sensitive sensors. Here, a sensitivity-enhanced surface plasmon resonance(SPR) sensor with a metal film modified by an overlayer of WS_2 nanosheets is proposed and demonstrated. The SPR sensitivity is related to the thickness of the WS_2 overlayer, which can be tailored by coating a WS_2 ethanol suspension with different concentrations or by the number of times of repeated post-coating.Benefitting from its large surface area, high refractive index, and unique optoelectronic properties, the WS_2 nanosheet overlayer coated on the gold film significantly improves the sensing sensitivity. The highest sensitivity(up to 2459.3 nm∕RIU) in the experiment is achieved by coating the WS_2 suspension once. Compared to the case without a WS_2 overlayer, this result shows a sensitivity enhancement of 26.6%. The influence of the WS_2 nanosheet overlayer on the sensing performance improvement is analyzed and discussed. Moreover, the proposed WS_2 SPR sensor has a linear correlation coefficient of 99.76% in refractive index range of 1.333 to 1.360. Besides sensitivity enhancement, the WS_2 nanosheet overlayer is able to show additional advantages, such as protection of metal film from oxidation, tunability of the resonance wavelength region, biocompatibility, capability of vapor,and gas sensing. 关键词：Sensitivity-enhanced surface plasmon resonance sensor utilizing a tungsten disulfide nanosheets overlayer RIU

相关文献

参考文献（33）
引证文献（9）
耦合文献（0）

参考文献(33)

引证文献(9)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Sensitivity-enhanced surface plasmon resonance sensor utilizing a tungsten disulfide (WS_2) nanosheets overlayer

参考文献(33)

引证文献(9)

用户提示