3results about How to "Improve sensor sensitivity" patented technology

This invention relates to the field of sensing materials technology, specifically disclosing a cellulose-based conductive hydrogel material for ascorbic acid detection, its preparation method, and its applications. This hydrogel uses TEMPO oxidized cellulose nanofibers (TOCNF) as a biocompatible matrix. By introducing Cu-BTC / CNT composite nanoparticles, a three-dimensional conductive network with both high electrochemical activity and structural stability is constructed. While retaining the biocompatibility and flexibility of cellulose, it exhibits particularly high sensitivity and selectivity in detecting small biomolecules such as ascorbic acid, with short response time and good stability. This method achieves synergistic optimization of the composite material's structural uniformity and functionality without relying on complex molding processes. Experimental results show that the conductive hydrogel prepared by this invention possesses good mechanical properties and biocompatibility, exhibiting high sensitivity and stability in biosensing fields such as ascorbic acid detection, providing a novel high-performance material basis for flexible biosensors.

The invention discloses a thick-film resistor with high strain sensitivity and low temperature sensitivity and a preparation method thereof, and belongs to the technical field of functional materials, electronic elements and sensors. The preparation problem of the thick-film resistor with high strain sensitivity and low resistance temperature coefficient is solved. The preparation method comprises the following steps: weighing lead oxide, boron oxide and silicon dioxide, uniformly mixing, completely melting into molten glass, carrying out water quenching, and carrying out ball milling on the water-quenched glass slag to obtain lead borosilicate glass powder; weighing RuO powder and lead borosilicate glass powder, adding an organic carrier, mixing, adding into a three-roller grinder, and fully grinding to be fine and uniform, so as to obtain resistance paste; and coating a cleaned substrate with the resistance paste in a silk-screen printing manner, and in an air atmosphere, controlling the sintering peak temperature within the range of 750-950 DEG C and the heat preservation time of the sintering peak temperature within the range of 10-360 minutes to obtain the thick-film resistor with both high strain sensitivity and low temperature sensitivity.

The utility model provides a kind of sensor and electronic equipment, it is related to sensor field.Sensor includes: substrate, resistance sensing layer, capacitance sensing layer, pressure sensitive layer and contact layer.Resistance sensing layer is set on substrate.Capacitance sensing layer is set on the side of resistance sensing layer away from substrate, and capacitance sensing layer includes at least one hollow structure, and at least one hollow structure extends from the side of capacitance sensing layer close to resistance sensing layer to the side of capacitance sensing layer away from resistance sensing layer.Pressure sensitive layer is set on capacitance sensing layer, and is filled into at least one hollow structure, and pressure sensitive layer is contacted with the side of resistance sensing layer away from substrate by at least one hollow structure.Contact layer is set on pressure sensitive layer, and is configured to generate deformation under the action of external force, to transmit external force to pressure sensitive layer.