High-resistance flexible biological pressure sensor

Abstract

The invention discloses a high-resistance flexible biological pressure sensor, and belongs to the field of a biological pressure sensor. The high-resistance flexible biological pressure sensor comprises a flexible absorption layer (1), a high elastic body layer (3) and a substrate layer (2), wherein the flexible absorption layer (1) is in complete contact with a flexible biological surface, an electrode A is arranged in the flexible absorption layer (1), an electrode B is arranged in the substrate layer (2), the high elastic body layer (3) comprises hydrogel, a nanotube tree is arranged in thehydrogel, comprises conductive nanotubes with different diameter order of magnitudes and is provided with a first branch (41), at least two groups of second branches (42) and at least one group of third branch (43), the at least two groups of second branches (42) are arranged on the first branch (41), the at least one group of third branch (43) is arranged on the second branches (42), the third branch (43) is connected with the electrode A, and the first branch (41) is connected with the electrode B. The invention relates to the biological pressure sensor used for measuring pressure with highaccuracy according to the resistance distance change of the multi-stage nanotube tree.

Description

technical field [0001] The invention mainly relates to the field of biological pressure sensors, in particular to a high-resistance flexible biological pressure sensor. Background technique [0002] Biopressure sensors are widely used because they can measure soft living tissue surfaces. The measurement accuracy of biological pressure sensors in the prior art is limited by the variation range of resistance, that is, the sensitivity to low pressure is not high. Therefore, it is of great significance to design a flexible pressure sensor with high sensitivity. Contents of the invention [0003] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a high-resistance sensor that can be applied to the surface of biological living tissues, utilize the resistance distance change of multi-level nanotube trees, and measure low pressure with high precision. Flexible biological press...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a high-resistance sensor that can be applied to the surface of biological living tissues, utilize the resistance distance change of multi-level nanotube trees, and measure low pressure with high precision. Flexible Biopressure Sensors

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