Realization of Anomalous Microwave Absorption Characteristics of PVB-PEDOT:PSS With Electromagnetic Data-Driven Discovery
M. Praveen Kumar, Sarika Raga, S. Chetana, Dinesh Rangappa
Abstract
The minimum reflection loss (RL) value and effective absorption bandwidth (RL ≤ −10 dB) are intrinsically important for electromagnetic (EM) materials. This work demonstrates the RL characteristics of different poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) weight percentages (wt%) containing polyvinyl butyral (PVB), viz., PVB-PEDOT:PSS system. Unlike conventional studies, herein, through an EM data-driven approach, the RL characteristics of this system is discovered for minimum PEDOT:PSS wt% at minimum thickness in both <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${X}$ </tex-math></inline-formula> -band (8.2–12.4 GHz) and <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Ku</i> -band (12.4–18 GHz). This system exhibits a remarkable RL value, −47.5 dB, at 3.9 mm with an excellent effective bandwidth for 0.6% PEDOT:PSS. The EM data-driven discovery also indicates the RL characteristics for increasing 0.1% PEDOT:PSS in the polymer (PVB) matrix. Through this approach (as a proof of principle) the best RL characteristics can be realized for microwave absorption material combinations.