A method for preparing three-dimensional conductive metal micro-nanostructures in hydrogels based on the combination of femtosecond laser direct writing and electrochemical reduction
A metal microstructure and femtosecond laser technology, applied in the manufacture of microstructure devices, microstructure technology, microstructure devices, etc., can solve problems such as limitations, poor conductivity, and discontinuity of metal structures, and achieve fewer types and higher processing accuracy High, easy-to-operate effect
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Embodiment 1
[0046] In this embodiment, the femtosecond laser with a repetition rate of 80 MHz is used as an example to process the continuous silver line on the upper surface of the vertical hydrogel, as follows:
[0047] Original material: hydrogel soaked in 10% silver nitrate solution for 48 hours.
[0048] The preparation steps of the continuous micro-nano silver wire are described in detail as follows:
[0049] (1) Place the hydrogel soaked in the silver nitrate solution on the glass slide, as shown in Figure 1;
[0050] (2) Place the fixed hydrogel 1 on the three-dimensional electric translation stage 5, as shown in FIG. 1 . The repetition frequency of the femtosecond laser 3 is 80MHz, the pulse width is 50fs, and the power is set at 80mW. A microscopic objective lens 2 with 50× and a numerical aperture of 0.5 is selected, so that the femtosecond laser 3 is focused on the inside of the hydrogel 1 through the microscopic objective lens 2 . The femtosecond laser 3 is controlled to f...
Embodiment 2
[0055] In this embodiment, the femtosecond laser with a repetition rate of 80 MHz is used as an example to process a continuous silver wire with a thinner diameter, as follows:
[0056] Original material: hydrogel soaked in 10% silver nitrate solution for 48 hours.
[0057] (1) Fixation of hydrogel 1 Refer to the corresponding process of Example 1.
[0058] (2) The process of focusing and scanning the hydrogel with the femtosecond laser 3 refers to the corresponding process in Example 1. The parameters are: the repetition frequency of the femtosecond laser 3 is 80 MHz, the pulse width is 50 fs, and the power is set at 80 mW. A microscopic objective lens 2 with 50× and a numerical aperture of 0.5 is selected, so that the femtosecond laser 3 is focused on the inside of the hydrogel 1 through the microscopic objective lens 2 . The femtosecond laser 3 is controlled to focus and irradiate the femtosecond laser scanning path 7 through the movement of the three-dimensional electric ...
Embodiment 3
[0063] In this embodiment, a femtosecond laser with a repetition rate of 80 MHz is used as an example to process a continuous silver line in the form of Arabic numerals 1, as follows:
[0064] Original material: hydrogel soaked in 10% silver nitrate solution for 48 hours.
[0065] (1) Fixation of hydrogel 1 Refer to the corresponding process of Example 1.
[0066] (2) The process of focusing and scanning the hydrogel with the femtosecond laser 3 refers to the corresponding process in Example 1. The parameters are: the repetition frequency of the femtosecond laser 3 is 80 MHz, the pulse width is 50 fs, and the power is set at 80 mW. A microscopic objective lens 2 with 50× and a numerical aperture of 0.5 is selected, so that the femtosecond laser 3 is focused on the inside of the hydrogel 1 through the microscopic objective lens 2 . The femtosecond laser focusing and irradiating the femtosecond laser scanning path 7 is controlled by the movement of the three-dimensional electri...
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