Results 51 to 60 of about 409,557 (326)

Mode-matching analysis of a shielded rectangular dielectric-rod waveguide [PDF]

open access: yes, 2005
Rectangular cross-section dielectric waveguides are widely used at millimeter wavelengths. In addition, shielded dielectric resonators having a square cross-section are often used as filter elements, however there is almost no information available on ...
Ball, James A. R., Wells, Colin G.
core   +2 more sources

Fabrication of Multifunctional FeSi Gyroid Lattice Composites via Additive Manufacturing and Polymer Infiltration

open access: yesAdvanced Engineering Materials, EarlyView.
A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli   +9 more
wiley   +1 more source

Effect of magnetic spins flipping process on the dielectric properties of α-Fe1.6Ga0.4O3 system

open access: yesAIP Advances, 2015
The α-Fe1.6Ga0.4O3 (Ga doped α-Fe2O3) sample has been stabilized in rhombohedral structure. The sample is a canted ferromagnet at 300 K and above. The spins structure starts flipping from in-plane direction to out of plane direction of the rhombohedral ...
Abdul Gaffar Lone, R. N. Bhowmik
doaj   +1 more source

Experimental investigation of dielectric properties of seasonal snow at field observatories in the northwest Himalaya

open access: yesAnnals of Glaciology, 2016
Radio-echo sounding techniques are very useful for fast profiling of seasonal snowpack. Ground-penetrating radar (GPR) is used widely for various cryospheric applications, such as snow/glacier depth estimation, snow layer identification and snow water ...
Kamal K. Singh   +5 more
doaj   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Mineral Soil Texture–Land Cover Dependency on Microwave Dielectric Models in an Arid Environment

open access: yesLand, 2020
In this study, we measured and characterized the relative dielectric constant of mineral soils over the 0.3−3.0 frequency range, and compared our measurements with values of three dielectric constant simulation models (the Wang, Dobson, and Mironov
Saeid Gharechelou   +2 more
doaj   +1 more source

TRANSMISSION LINE THEORY BASED TWO LAYER MODEL FOR DETERMINING SOIL MOISTURE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Present paper deals with the task of estimating soil moisture under vegetation cover by using transmission line theory based two layer model. The two layer model measures the impedance of both the layers namely, soil and vegetation.
P. Mishra, D. Singh
doaj   +1 more source

Estimation of dielectric constant for various standard materials using microstrip ring resonator [PDF]

open access: yes, 2017
Microstrip ring resonator (MRR) is known for dielectric constant determination and many studies used Teflon as a standard sample. However, there are many other materials available which able to perform better or equivalence as the Teflon in calibrating ...
Abbas, Zulkifly   +3 more
core   +1 more source

Dependence of exciton transition energy of single-walled carbon nanotubes on surrounding dielectric materials

open access: yes, 2007
We theoretically investigate the dependence of exciton transition energies on dielectric constant of surrounding materials. We make a simple model for the relation between dielectric constant of environment and a static dielectric constant describing the
Ando   +36 more
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

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