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RSS FeedsSensors, Vol. 19, Pages 403: Screen-Printed, Pure Carbon-Black Thermocouple Fabrication and Seebeck Coefficients (Sensors)

 
 

19 january 2019 14:00:42

 
Sensors, Vol. 19, Pages 403: Screen-Printed, Pure Carbon-Black Thermocouple Fabrication and Seebeck Coefficients (Sensors)
 


Thermocouples classically consist of two metals or semiconductor components that are joined at one end, where temperature is measured. Carbon black is a low-cost semiconductor with a Seebeck coefficient that depends on the structure of the carbon particles. Different carbon black screen-printing inks generally exhibit different Seebeck coefficients, and two can therefore be combined to realize a thermocouple. In this work, we used a set of four different commercially available carbon-black screen-printing inks to print all-carbon-black thermocouples. The outputs of these thermocouples were characterized and their Seebeck coefficients determined. We found that the outputs of pure carbon-black thermocouples are reasonably stable, linear, and quantitatively comparable to those of commercially available R- or S-type thermocouples. It is thus possible to fabricate thermocouples by an easily scalable, cost-efficient process that combines two low-cost materials.


 
66 viewsCategory: Chemistry, Physics
 
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