Waveguide type two-dimensional material photothermal effect measuring device
A technology of two-dimensional materials and photothermal effect, which is applied in the directions of measurement devices, color/spectral characteristic measurement, and material analysis, etc., can solve the problems of complex photothermal effect devices of two-dimensional materials, and achieve simple structure, high detection sensitivity and small size Effect
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Embodiment 1
[0021] The present invention provides a waveguide-type two-dimensional material photothermal effect measurement device, including: a light source, a photodetector, a substrate, and a first rectangular noble metal part 1 placed on the substrate, a second rectangular noble metal part 2, a two-dimensional material 5, Sensitive media6. The material of the substrate is silicon. like figure 1 As shown, the first rectangular noble metal part 1 and the second rectangular noble metal part 2 are parallel and form a metal-dielectric-metal waveguide, and the metal-dielectric-metal waveguide includes a waveguide input end 3 and a waveguide output end 4 . The material of the first rectangular noble metal part 1 and the second rectangular noble metal part 2 is noble metal. Preferably, the material of the first rectangular noble metal part 1 and the second rectangular noble metal part 2 is gold, gold has good surface plasmon properties, and the gold material is also corrosion-resistant. Th...
Embodiment 2
[0025] On the basis of Example 1, such as figure 2 As shown, a two-dimensional material 5 is also attached on the other side of the metal-dielectric-metal waveguide, and a sensitive medium 6 is placed between the two two-dimensional materials 5 . That is to say, the two-dimensional material 5 is attached on the opposite side walls of the metal-dielectric-metal waveguide, and the sensitive medium 6 is arranged between the two-dimensional materials 5 . In this way, the two-dimensional material 5 can generate more heat, so that the temperature of the sensitive medium 6 can be raised more, thereby improving the sensitivity of photothermal effect detection.
Embodiment 3
[0027] On the basis of Example 2, such as image 3 As shown, the first heat insulating material part 7 and the second heat insulating material part 8 are included, and the first heat insulating material part 7 and the second heat insulating material part 8 are recessed on the surfaces of the first rectangular noble metal part 1 and the second rectangular noble metal part 2 respectively. That is, if image 3 As shown, the sides of the first heat insulating material part 7 are flush with the sides of the first rectangular noble metal part 1 , and the sides of the second heat insulating material part 8 are flush with the sides of the second rectangular noble metal part 2 . A two-dimensional material 5 or a sensitive medium 6 is attached to the side surfaces of the first heat insulating material part 7 and the second heat insulating material part 8 . The first insulating material 7 and the second insulating material 8 are poor conductors of heat. Preferably, the material of the ...
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