Liquid crystal sensor and detection method thereof
A detection method and sensor technology, applied in the field of sensors, can solve the problems of lack of commonality, liquid crystal pollution, different liquid crystal detection methods, etc., and achieve the effect of reducing costs
Active Publication Date: 2018-07-24
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0003] The existing liquid crystal sensor has the following disadvantages: the amount of liquid crystal required for detection is relatively large, and the thickness of the liquid crystal sensor is relatively large; for contact detection, the liquid crystal is polluted after detection and cannot be reused; and for different detection objects, The liquid crystal detection methods are different, so the detection equipment is also different. Different equipment needs to be replaced to detect different objects, which lacks commonality
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[0048] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given in conjunction with the accompanying drawings and specific embodiments.
[0049] like figure 1 As shown, in the existing liquid crystal sensor, the initial orientation direction of the liquid crystal molecules 1 is irregular. At this time, the detection light beam is emitted from one side of the liquid crystal sensor, and the transmitted light beam is received from the other side of the liquid crystal sensor. The liquid crystal sensor changes the propagation direction of the detection beam, so that the beam passing through the liquid crystal sensor becomes divergent, so the intensity of the received beam is significantly weaker than that of the detection beam.
[0050] like figure 2 As shown, after the substance 2 to be detected is dropped into the liquid crystal sensor, the subst...
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The invention provides a liquid crystal sensor and a detection method thereof, and belongs to the technical field of sensors. The liquid crystal sensor comprises a solute liquid crystal layer and a hydrophilic and hydrophobic conversion film covering the solute liquid crystal layer. The surface, which faces the solute liquid crystal layer, of the hydrophilic and hydrophobic conversion film can beconverted between the hydrophilic state and the hydrophobic state under the preset reaction condition. The detection method of the liquid crystal sensor comprises the steps that the liquid crystal sensor is arranged under the reaction condition to be detected; and detection beams are emitted from one side of the liquid crystal sensor, the transmitted beams are detected from the other side of the liquid crystal sensor, and whether the liquid crystal sensor is arranged under the preset reaction condition is judged according to the detection result. The thickness of the liquid crystal sensor canbe reduced, and the liquid crystal in the liquid crystal sensor can be reused so that the cost of the liquid crystal sensor can be reduced and the liquid crystal sensor is suitable for multiple detection objects.
Description
technical field [0001] The invention relates to the technical field of sensors, in particular to a liquid crystal sensor and a detection method thereof. Background technique [0002] The principle of the liquid crystal sensor is to use various detection objects to affect the deflection of liquid crystal molecules, thereby changing the ability of the liquid crystal sensor to refract light. Detection of optics, biomolecules, proteins, harmful chemicals, pH, electric fields, etc. [0003] The existing liquid crystal sensor has the following shortcomings: the amount of liquid crystal required for detection is large, and the thickness of the liquid crystal sensor is large; for contact detection, the liquid crystal is contaminated after detection and cannot be reused; and for different detection objects, The liquid crystal detection methods are different, so the detection equipment is also different, and different equipment needs to be replaced to detect different objects, which ...
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IPC IPC(8): G01D5/26
CPCG01D5/26
Inventor 徐元杰高山
Owner BOE TECH GRP CO LTD