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Humidity sensor based on reduced graphene oxide humidity-sensitive thin film and preparation and using methods

A technology of humidity sensor and humidity sensitive film, which is applied in graphene, instruments, scientific instruments, etc., can solve the problems of lack of economical, effective and high performance, and achieve the effect of good industry promotion prospect and low cost

Pending Publication Date: 2019-08-20
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, the development of soil moisture sensors is good. However, there are few sensors that can be used to monitor the water transport and transpiration in plants, and the economical, effective and high-performance sensors are even more scarce.

Method used

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  • Humidity sensor based on reduced graphene oxide humidity-sensitive thin film and preparation and using methods
  • Humidity sensor based on reduced graphene oxide humidity-sensitive thin film and preparation and using methods
  • Humidity sensor based on reduced graphene oxide humidity-sensitive thin film and preparation and using methods

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Embodiment

[0039] Such as figure 1As shown, a humidity sensor based on a reduced graphene oxide humidity-sensitive thin film, including a lightweight upper cover, a silicon dioxide substrate 5, a humidity-sensitive sensing element, a humidity-sensitive thin-film resistance detection device 6, a circuit signal line 11 and a base 12. The upper surface of the lightweight upper cover is provided with hollow ventilation holes 3, and the lower surface is provided with threading holes 1. The humidity-sensitive sensing element includes a reduced graphene oxide-based humidity-sensitive film and interdigitated gold electrodes 9. The reduced graphene oxide-based moisture-sensitive film is placed on the upper surface of the interdigitated gold electrode 9, and the interdigitated gold electrode 9 is placed on the upper surface of the silicon dioxide substrate 5, and the silicon dioxide substrate 5 is placed on the wet The upper surface of the sensitive thin film resistance detection device 6, the moi...

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Abstract

The invention discloses a humidity sensor based on a reduced graphene oxide humidity-sensitive thin film, comprising a lightweight upper cover, a silicon dioxide substrate, a humidity-sensitive sensing element, a humidity-sensitive thin film resistance detecting device, a circuit signal line and a base, wherein the humidity-sensitive sensing element comprises a reduced graphene oxide humidity-sensitive thin film and an interdigitated gold electrode. The transpiration of a plant can be detected through detecting water molecules released by the transpiration and evaluation is carried out. The invention also provides a using method and a reduced graphene oxide humidity-sensitive thin film preparation method.

Description

technical field [0001] The invention belongs to the technical field of small and micro sensor devices, and specifically relates to a humidity sensor based on a reduced graphene oxide humidity sensitive film, a preparation method and a use method. Background technique [0002] One of the main goals of crop breeding is to breed crop varieties with strong stress resistance, and the measurement of plant drought resistance can be based on the relative amount of water transport in the plant and the strength of transpiration, that is, the water utilization of plants. rate quantified indicators. This requires people to use sensors to measure the relevant physical quantities when water is transported in plants. [0003] The process in which plants release water vapor through the stomata of leaves is transpiration, which is the physiological process of water transport in plants. During the process of plants absorbing water from the soil and transporting it to various parts of the pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12C01B32/184
CPCC01B32/184G01N27/121G01N27/125
Inventor 朱晓璐侯伟盛徐春望范梓怀
Owner HOHAI UNIV CHANGZHOU
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