Preparation method of sensor through electric field regulation and control

A technology of electric field regulation and sensor, which is applied in the direction of devices and coatings for coating liquid on the surface

CN113369108AInactive Publication Date: 2021-09-10SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a sensor through electric field regulation and control, and relates to the technical field of sensor preparation. A sensor sensitive structure is prepared by regulating and controlling charged jet flow through electric fields, the method comprises jet flow generation, focusing and motion control parts, specifically, (1), a first-stage electric field is constructed, and fluid is sprayed to form superfine charged jet flow; (2), a second-stage electric field is constructed to focus the charged jet flow, and accurate deposition of the charged jet flow is achieved; and (3), a three-stage electric field is constructed, and the charged jet flow is controlled to move and deposit. According to the method, the sensitive structure of the sensor can be accurately controlled, preparation equipment is simple, the operation is easy, and small-scale and high-precision rapid preparation of the sensitive structure of the sensor can be achieved.
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Description

technical field

[0001] The invention belongs to the technical field of sensor preparation, and relates to a method for preparing a sensor controlled by an electric field. Background technique

[0002] Sensors are applied to all aspects of life and production. At present, the conventional methods of preparing sensitive structures of sensors mainly rely on laser processing, etching, nanoimprinting, self-assembly, etc. Laser processing is difficult to achieve nanostructures, and the cost of equipment is high; Photolithography technology not only has high equipment cost, but also complicated process, which limits its wide-scale use. Nanoimprint templates rely heavily on photolithography technology and are expensive; self-assembly technology requires high experimental conditions and is difficult to realize.

[0003] The equipment required for the preparation of microstructures by electrofluid jet technology is simple and easy to operate, and the produced fibers have high porosity...

Examples

Embodiment 1

[0019] Such as figure 1 As shown, a sensor preparation method regulated by an electric field in the present invention uses a charged jet to move in an electric field under the action of an electric field force, and prepares a sensor sensitive structure by constructing an electric field to regulate the generation, focusing and motion deposition of the charged jet.

[0020] Build a first-level electric field to generate charged jets, including: material supply device 1, nozzle 2, positive high-voltage power supply 3, negative high-voltage power supply 8, and collection device 9. The material supply device 1 is connected with the spray head 2, and sends the fluid material into the spray head 2. The collecting device 9 is placed directly under the spray head 2, and the distance between the spray head 2 and the collecting device 9 is 1 mm to 100 mm. The positive high-voltage power supply 3 is connected to the nozzle 2, the negative high-voltage power supply 8 is connected to the c...

Embodiment 2

[0026] Such as figure 2 As shown, the difference from embodiment 1 is that the auxiliary electrode of embodiment 2 is a metal plate auxiliary electrode, and the metal plate auxiliary electrode 4 is in contact with the shower head 2 .

[0027] Build a first-level electric field to generate charged jets, including: material supply device 1, nozzle 2, positive high-voltage power supply 3, negative high-voltage power supply 7, and collection device 8. The material supply device 1 is connected with the spray head 2, and sends the fluid material into the spray head 2. The collecting device 8 is placed directly under the spray head 2, and the distance between the spray head 2 and the collecting device 8 is 1 mm to 100 mm. The positive high voltage power supply 3 is connected to the nozzle 2, the negative high voltage power supply 7 is connected to the collecting device 8, and the ground terminal of the high voltage power supply is grounded. A high-voltage electric field is formed ...