Loading...
Search for:
low-k-dielectric
0.005 seconds
Engineering of metallic nanorod-based hyperbolic metamaterials for broadband applications operating in the infrared regime
, Article Applied Nanoscience (Switzerland) ; Volume 11, Issue 1 , 2021 , Pages 229-240 ; 21905509 (ISSN) ; Farmani, A ; Raza, M ; Niaz Akhtar, M ; Hussain, A ; Sharif University of Technology
Springer Science and Business Media Deutschland GmbH
2021
Abstract
Metamaterials are manmade structures that have attained considerable attention over the past 2 decades in the modern fields like cloaking, sensing, and imaging owing to their ability to harness electromagnetic fields. In this regard, we have inspected the dielectric properties of the hyperbolic metamaterials (HMM) made of metallic nanorods and dielectric medium at the infrared wavelength regime. The periodically arranged subwavelength-sized metallic nanorods embedded in the silicon dioxide (SiO 2) substrate glass. The spacing between two adjacent nanorods is of subwavelength in size. Furthermore, effective permittivity of the metamaterial has been analyzed by employing the Maxwell Garnett...
Fabrication and microwave dielectric characterization of cordierite/BZBS (Bi2O3-ZnO-B2O3-SiO2) glass composites for LTCC applications
, Article Journal of Alloys and Compounds ; Volume 882 , 2021 ; 09258388 (ISSN) ; Nemati, A ; Banijamali, S ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
The present work aims to fabricate cordierite/BZBS glass (Bi2O3-ZnO-B2O3-SiO2) composites through one-step heat treatment. Cordierite was synthesized from a solid-state reaction of aluminum hydroxide, magnesium hydroxide, and silica gel. BZBS glass was obtained through the classic melt quenching technique. Milled cordierite powder was mixed with different volume fractions of glass powders and heat treated at 950 °C. Considering the densification behavior along with the microwave dielectric features, two composites (C70G30 and C60G40) were chosen for further examination. These composites were separately heat treated at different temperatures from 650 up to 900 °C, then characterized due to...