Interconnects which operate in the sub-THz range can perform over very large bandwidths and are well suited for high data-rate communication systems. This work presents electromagnetic studies of two types of flexible dielectric interconnects which confine radiation via periodic dielectric structures implemented in polypropylene (PP). Inorganic nanoparticles are combined with PP to increase the effective dielectric constant. The first type of interconnect features a low dielectric constant core surrounded by layers of alternating high and low refractive index dielectrics. Modeling results show losses < 5 dB/m with over a 33% bandwidth for y-polarized modes. The second type of interconnect features a 2D hexagonal perforation pattern in a high-ε dielectric slab which results in high confinement of radiation. Preliminary experimental and fabrication results of the flexible interconnect will be demonstrated and the current challenges highlighted.
Dr. Deji Akinwande received the Ph.D. degree in electrical engineering from Stanford University, Stanford, CA, where he conducted research on the experimental synthesis, device physics, and circuit applications of carbon nanotubes and graphene. His Master’s research at Case Western Reserve University involved the design, development, and characterization of evanescent microwave probes for nondestructive imaging of materials.
He is currently an Assistant Professor with the University of Texas, Austin. The current focus of his research explores electronic circuits from beyond Si nanomaterials, and flexible nanoelectronics and waveguides. He is a co-inventor of a high-frequency chip-to-chip interconnect and an electrically small antenna for bio-electronics. Prof. Akinwande has been honored with the IEEE Nano Geim and Novoselov Graphene Prize, the NSF CAREER award, the Army and DTRA Young Investigator awards, the 3M Nontenured Faculty Award, and was a past recipient of the “2005 Stanford Cheesy Award” for outstanding LNA design and the Ford Foundation, Alfred P. Sloan Foundation, and Stanford DARE Fellowships. He recently co-authored a textbook on carbon nanotubes and graphene device physics by Cambridge University Press.