Flexible biological electrode and manufacturing method and application thereof
A bio-electrode, flexible technology, applied in applications, sensors, diagnosis, etc., can solve the problems of nano-paper substrate moisture absorption swelling, few nano-paper electronic devices, damage to the electrode structure of the device, etc., to achieve good transparency, flexibility, and stable electrical properties , The effect of simple process
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Embodiment 1
[0065] In this embodiment, the flexible bioelectrode includes a flexible substrate, a microelectrode array and an insulating layer, the flexible substrate is water-resistant nano-paper, and the preparation method of the flexible bioelectrode includes the following steps:
[0066] (1) Preparation of water-resistant nano-paper:
[0067] The preparation method of described water resistance nano paper, technological process is as figure 1 As shown (the preparation of the nanopaper in the following examples 2-6 is carried out according to the method provided in this example, the only difference is the thickness of the nanopaper).
[0068] The preparation of nano paper with a thickness of 30 microns specifically includes the following steps:
[0069] (a) Cellulose oxidation
[0070] Disperse 5 g bleached dry pine pulp in 250 mL Na 2 CO 3 / NaHCO 3 Add 78.1 mg of 2,2,6,6-tetramethylpiperidine-nitrogen-oxide (TEMPO) and 514.4 mg of NaBr to the buffer solution (pH=10), slowly add 3...
Embodiment 2
[0092] In this embodiment, the flexible bioelectrode includes a flexible substrate, a microelectrode array and an insulating layer, and the flexible substrate is water-resistant nano-paper; the preparation method of the flexible bioelectrode includes the following steps:
[0093] (1) Preparation of water-resistant nano-paper
[0094]With reference to the method of step (1) of Example 1, the difference is that 70mL of nanocellulose solution is taken for suction filtration, and other operations are the same as the method of step (1) in Example 1 to obtain a thickness of 150 microns. Nano paper, the obtained water-resistant nano paper is soaked in water for 24 hours, and the dimensional change rate is less than 2%.
[0095] (2) Preparation of insulating layer-microelectrode array-insulating layer structure
[0096] In step (2), the difference from Example 1 is that the metal electrode material used in step (b) of this example is Cr / Pt (5 nanometers / 100 nanometers), and the diame...
Embodiment 3
[0100] In this embodiment, the flexible bioelectrode includes a flexible substrate, a microelectrode array and an insulating layer, and the flexible substrate is water-resistant nano-paper; the preparation method of the flexible bioelectrode includes the following steps:
[0101] (1) Preparation of water-resistant nano-paper
[0102] With reference to the method of step (1) of Example 1, the difference is that 140mL of nanocellulose solution is taken for suction filtration, and other operations are the same as the method of step (1) in Example 1 to obtain a thickness of 300 microns of nanopaper The obtained water-resistant nano paper has a dimensional change rate of less than 2% after soaking in water for 24 hours.
[0103] (2) Preparation of insulating layer-microelectrode array-insulating layer structure
[0104] In step (2), the difference from Example 1 is that the insulating material in steps (a) and (c) of this example is SU-8 2005, and the thickness of the insulating l...
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Abstract
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