1. Printable organic electrochemical circuit to record time–temperature history
- Author
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Tehrani, Payman, Engquist, Isak, Robinson, Nathaniel D., Nilsson, David, Robertsson, Mats, and Berggren, Magnus
- Subjects
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ORGANIC electrochemistry , *ELECTROLYTIC oxidation , *POLYETHYLENE glycol , *POLYTHIOPHENES , *SULFONATES , *PHASE transitions , *TEMPERATURE effect , *ELECTRIC conductivity - Abstract
Abstract: An electrochemical circuit to record time–temperature history has been realized by using the propagation of over-oxidation fronts in stripes of poly(3,4-ethylenedioxythiopehene) blended with poly(styrenesulfonate) (PEDOT:PSS). The over-oxidation front propagation has been characterized and related to the phase change of polyethylene glycol (PEG) electrolytes. The electrolytes were chosen to have a phase transition in the temperature interval to be monitored, resulting in large conductivity variations and thereby an easily interpreted output. A demonstrator has been fabricated and shown to detect a temperature increase and a following temperature decrease. This very simple device is cheap to produce and could be used to monitor the temperature of packages. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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