Title :
Response of varactors containing DNA-conjugated polymer
Author :
Bartsch, Carrie M. ; Lombardi, Jack P., III ; Aga, Roberto S., Jr. ; Lorenzini, Robert G. ; Kline, Whitney M. ; Sotzing, Gregory ; Heckman, Emily M. ; Subramanyam, Guru
Author_Institution :
Sensors Directorate, Air Force Res. Lab., Wright-Patterson AFB, OH, USA
Abstract :
We study the effect on the microwave S-parameters of adding a conjugated polymer layer to a deoxyribonucleic acid-based (DNA-based) biopolymer within a variable capacitor (varactor) using a capacitive test structure. The conjugated polymer we are using in this work is poly(3-hexylthiophene-2,5-diyl) (P3HT) and the DNA-based biopolymer is DNA-CTMA. The results are compared to both the baseline DNA-based biopolymer and the conjugated polymer layer added to a layer of polyvinyl alcohol. The addition of the conjugated polymer layer underneath the DNA-based biopolymer is found to most significantly improve the stability and dielectric tuning of the DNA-based biopolymer.
Keywords :
DNA; S-parameters; biomolecular electronics; circuit stability; circuit tuning; conducting polymers; microwave circuits; varactors; DNA-CTMA; DNA-based biopolymer; DNA-conjugated polymer layer; P3HT; capacitive test structure; deoxyribonucleic acid-based biopolymer; dielectric tuning; microwave S-parameter; poly(3-hexylthiophene-2,5-diyl); polyvinyl alcohol; stability; varactor; variable capacitor; Capacitors; Dielectric measurements; Polymers; Scattering parameters; Tuning;
Conference_Titel :
Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on
Conference_Location :
Boise, ID
Print_ISBN :
978-1-4673-2526-4
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2012.6291977
