Taking into account the evanescent field intensity and the propagation length, the experimental results can be well analyzed and explained. Simulation results show that the increase of MoS 2 overlayers can enhance the intensity of electrical field penetrating into the analyte solution while reducing the propagation length, which collectively results in the nonmonotonic change of the sensitivity depending on deposition cycles.25:T546,In this work, a sensitivity-enhanced surface plasmon resonance (SPR) sensor, which is integrated with MoSe₂ as modification overlayer, is proposed and investigated. The sensor is constructed by physically depositing MoSe₂ onto the surface of a conventional SPR sensor based on Krestchman configuration. Thanks to the commendable properties of MoSe₂ including high carrier mobility, high refractive index (RI), large surface area, and so forth, adding an overlayer within a certain thickness can effectively improve the RI sensitivity. Experimental results show that, with the increased number of deposition cycles-which positively correlates with the duty ratio and the MoSe₂ overlayer's thickness-the sensitivity at first increases, and then declines. The highest sensitivity of 2524.8 nm/RIU is achieved experimentally, which corresponds to the 2 deposition cycles. This shows an improvement of 36.3%, compared with the case without the MoSe₂ modification. The ease of fabrication, efficiency of performance enhancement, and great potentials (such as the large surface area of MoSe₂ for linking abundant functional groups) allow the method presented in this paper to contribute to the development of performance-enhanced SPR sensors for the biological, chemical, and medical fields.26:T533,A new concept for portable vectormagnetometer, based on smartphone platform and sidepolished-fiber (SPF) integrated with magnetic fluid (MF), is proposed and demonstrated. The magnetometer is designed on a smartphone, which incorporates the functions of light source, detector, and data processing together, and is illuminated and imaged via the SPF. Moreover, thanks to the non-central symmetric structure of the SPF and the magnetic-field-induced anisotropic distribution of the MF around the SPF, the proposed magnetometer is able to detect the intensity and the orientation of magnetic field simultaneously. Experimental results show that the sensitivities of the proposed magnetometer to magnetic field intensity and orientation can reach -0.050 dB/Oe and -0.263 dB/degree, corresponding to the measurement resolutions of 0.336 Oe and 0.064 degree respectively, which are comparable to or even better than that obtained by the traditional platform. Our design can avoid the use of complex and expensive instruments that are employed in the traditional platform. Because of the features of portability, low cost, and highly-sensitive vector measurement, etc., the proposed magnetometer is advantageous for the applications in sensing magnetic vector requiring a portable size and real-time transmission of the measured results.

#	Concept	H-Index	Publications	Citations
1	Engineering	5	5	332
2	Biomedical Engineering	2	2	143
3	Medicine	1	1	61
4	Applied Physics	1	1	38
5	Biochemistry	1	1	61

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