Polymer (PDMS-Fe3O4) magneto-dielectric substrate for a MIMO antenna array

Alqadami, Abdulrahman S. M.; Jamlos, Mohd Faizal; Soh, Ping Jack; Kamarudin, M. R.

doi:10.1007/s00339-015-9523-3

Cited by 15 publications

(10 citation statements)

References 24 publications

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“…The activity of inorganic phosphatases can be inhibited by some small organic molecules, e.g., citrate acid, due to the iron complex formation [26,88]. The interaction of organic matter and iron oxide nanoparticles is very complex [140][141][142], the catalytic capacity, on the other hand, can also be enhanced when metal oxide nanoparticles surface modified with some especially organic ligand, e.g., glutathione, dendrimer, DNA, and protein, based on the progress of nanozyme and metal-organic frameworks from the view of bioengineering [143][144][145][146][147].…”

Section: Examples and Importance Of Iron Architecturementioning

confidence: 99%

Iron Oxide Nanoparticles

Senna¹

2014

Dekker Encyclopedia of Nanoscience and Nanotechnology, Third Edition

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is an independent researcher and senior environmental scientist who focuses on the biogeochemistry of soil, water, plant, and solid wastes, including phosphorus. Rachel Carson's Silent Spring inspired him to learn soil science. He holds an MSc in Soil Ecology from Nanjing Agricultural University, China, and a Ph.D. in Environmental Chemistry from the Hebrew University of Jerusalem, Israel. He also completed a postdoctoral fellowship in Oceanography at the University of Miami, USA. In 2007, Dr. Huang observed the catalytic phenomena of the phosphate ester hydrolysis in aged inorganic iron solutions and iron oxide nanomaterials under the aqueous environment with Michaelis-Menten kinetics behavior and suggested a hypothesis on the inorganic enzyme (

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Section: Examples and Importance Of Iron Architecturementioning

confidence: 99%

Iron Oxide Nanoparticles

Senna¹

2014

Dekker Encyclopedia of Nanoscience and Nanotechnology, Third Edition

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“…Although these types of substrates are planar, the antenna efficiency is less than the one with un-planar magneto-dielectric substrate [7][8][9]. Recently, a new fabrication technology has emerged for the design of polymer-based magneto-dielectric composite substrates for antennas, such as nickel and ferrite [16,17]. Such composite substrates have a better performance compared to artificially magneto-dielectric substrates due to its homogeneous structure.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Circularly-Polarized Patch Antenna Using an Artificial Metamaterial Substrate

Denidni¹

2021

PIER C

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An artificially two-dimensional metamaterial (ATDM) substrate is proposed as an artificial metamaterial high-constitutive parameter substrate for miniaturizing of a circularly-polarized microstrip antenna. In a circularly-polarized antenna, the electric and magnetic field directions are changing, which requires a two-dimensional metamaterial unit cell. The presented ATDM substrate raises the permeability and permittivity of the underneath substrate for a circularly-polarized patch antenna, and it is constructed of periodically arranged split-ring resonator (SRR) circuits implemented in a low permittivity dielectric underneath substrate. The ATDM attains equal permittivity and permeability material (ε r ∼ = μ r), which neutralizes the destructive effect of the increased permittivity on the bandwidth. In addition, the ATDM structure is implemented in printed circuit board technology. The area of the ATDM antenna at 2.45 GHz is approximately 75% smaller than a usual microstrip antenna. The proposed antenna bandwidth is enhanced compared to the antennas with high-permittivity substrates. The proposed ATDM substrate antenna is fabricated and measured, and comparisons show good agreements between simulated and measured results.

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“…Because different flexible electronic product applications have different requirements for substrate materials, research on substrate materials determines the developmental direction of flexible electronics. For example, magnetic material films or nanoparticles are deposited on transparent flexible substrates (e.g., polyethylene terephthalate (PET), polyimide, polystyrene, polymethylmethacrylate, or cyclic olefin copolymer) for developments of magnetic sensors or absorbers [1][2][3][4][5]. Because the flexible transparent optical film itself is not conductive, depositing a transparent conductive film on it as a conductive electrode (e.g., indium tin oxide (ITO) or aluminum doped zinc oxide) is necessary.…”

Section: Introductionmentioning

confidence: 99%

Curved-Mechanical Characteristic Measurements of Transparent Conductive Film-Coated Polymer Substrates Using Common-Path Optical Interferometry

Wen

Hsu

2021

Coatings

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This study proposes a method for measuring curved-mechanical characteristics based on a whole-folding test for transparent conductive film-coated polymer substrates using common-path optical interferometry. Accordingly, 80-, 160-, and 230-nm indium tin oxide films coated on 40 × 40 mm 125-μm-thick polyethylene terephthalate (PET) substrates, and monolayer graphene films coated on 40 × 40 mm 250-μm-thick PET substrates are inspected and analyzed under the curving conditions of 50-, 30-, 20-, and 10-mm radii before and after an 11,000 whole-folding cycle test based on a 10-mm folding radius. This study utilizes the changes in the phase retardations of transparent conductive film-coated polymer substrates under different curving conditions before and after 11,000 whole-folding cycles to analyze the substrates’ residual stress characteristics that were the direct result of manufacturing process parameters. The results from this study of curved-mechanical characteristic measurements of flexible transparent conductive substrates can provide designers with improved product development and can assist manufacturers in improving the manufacturing design of enhanced coating processes.

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Polymer (PDMS-Fe3O4) magneto-dielectric substrate for a MIMO antenna array

Cited by 15 publications

References 24 publications

Iron Oxide Nanoparticles

Iron Oxide Nanoparticles

Miniaturized Circularly-Polarized Patch Antenna Using an Artificial Metamaterial Substrate

Curved-Mechanical Characteristic Measurements of Transparent Conductive Film-Coated Polymer Substrates Using Common-Path Optical Interferometry

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