An ultra-broadband single-component fractional-order capacitor using MoS2-ferroelectric polymer composite
Patole, Shashikant P.
Hassan, Ali H.
Salama, Khaled N.
KAUST DepartmentComputational Electromagnetics Laboratory
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Online Publication Date2018-08-30
Print Publication Date2018-08-27
Permanent link to this recordhttp://hdl.handle.net/10754/628498
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AbstractThe phase angle of a fractional-order capacitor's (FOC) impedance has a constant value between −90° and 0°. Maintaining this value over a broad frequency band is of utmost importance since it increases the applicability of the electrical circuit that employs the fractional-order capacitor (FOC). In this work, a molybdenum disulfide (MoS2)-ferroelectric polymer composite is used to design/fabricate an FOC. The resulting FOC's bandwidth of operation, which is defined as the frequency band where the variation in the phase angle is no more than ±4°, is five decades between 100 Hz and 10 MHz, a 3 decades improvement over the best reported state of the art. The value of the constant phase angle can be tuned from −80° to −58° by changing the type of the ferroelectric polymer in the composite and the volume ratio of MoS2. The results presented in this work demonstrate the potential of the FOCs fabricated using MoS2-ferroelectric polymer composites in robust and accurate realization of various electrical systems.
CitationAgambayev A, Farhat M, Patole SP, Hassan AH, Bagci H, et al. (2018) An ultra-broadband single-component fractional-order capacitor using MoS2-ferroelectric polymer composite. Applied Physics Letters 113: 093505. Available: http://dx.doi.org/10.1063/1.5040345.
SponsorsThe authors would like to thank Dr. Karumbaiah N. Chappanda for his valuable assistance in SEM imaging and King Abdullah University of Science and Technology (KAUST) and Saudi Basic Industries Corporation (SABIC) for funding this work under Grant No. RGC/3/2385-01.
JournalApplied Physics Letters