Y.T. Lee
Andong National University,
Korea
Keywords: biosensor strip using paper, biosensor strip with humidity sensor, biosensor reducing errors caused by humidity changes
Summary:
(Conventional Problem) Conventional manufacturing method for biosensor strip is complicated and materials used for conventional biosensor is PET film, which causes a high cost. The wasted biosensors made of PET film cause environmental problem and increase the cost of processing the wasted biosensors. It is known that more than 50 billion plastic biosensor strips are wasted for patients with diabetes annually, and this makes the environmental problem due to plastic biosensors more serious. (The present invention) Purpose: A method for manufacturing a biosensor strip using paper and a structure thereof are provided to produce the biosensor strip at low costs and to reduce environmental pollution. Simple Manufacturing Method with Paper: A biosensor strip is manufactured using paper with electrode patterns printed on a lower plate of paper material through screen-printing/carbon-ink-printing process using an inkjet printer. Adhesive film is formed in a portion of top of lower plate except for a portion where a channel for inserting a biomaterial sample is formed. When inserting the biomaterial sample through an inlet of the channel, an upper plate of the paper material where an air outlet for discharging air is formed correspondingly on the top of the channel is adhered to the adhesive film. Humidity Sensor for Reducing Errors due to Humidity: The biosensor further includes a humidity sensor to detect the capacitance changes due to humidity in environment and humidity between the electrode patterns. Based on the detected humidity and prediction of the influence of the humidity on the capacitance, the biosensor can reduce the errors caused by humidity changes. 1) Low Cost Automatic Manufacture The biosensor strip is manufactured using paper with electrode patterns printed on a lower plate of paper material through screen-printing/carbon-ink-printing process using inkjet printer. Through manufacturing process using paper, low cost automatic manufacturing is possible. 2) Humidity Control and Compensation for Errors due to Humidity Changes The biosensor made of paper can control humidity through humidity absorbing characteristic and permittivity changing characteristic of paper depending on humidity. The biosensor further includes a humidity sensor to detect the capacitance changes due to humidity in environment and humidity between the electrode patterns. Based on the detected humidity and prediction of the influence of the humidity on the capacitance, the biosensor is able to reduce errors caused by humidity changes. (Target Customers for Tech Transfer) Any companies for manufacturing a biosensor strip. (Potential Collaboration with Research Center) Any research center for doing research in a biosensor strip. The technologies of the present invention are protected by multiple patents including KR10-1359750 and KR10-838661.