Results 61 to 70 of about 115,063 (327)

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

Modeling columnar thin films as platforms for surface-plasmonic-polaritonic optical sensing

open access: yes, 2009
Via exploitation of surface plasmon polaritons (SPPs), columnar thin films (CTFs) are attractive potential platforms for optical sensing as their relative permittivity dyadic and porosity can be tailored to order. Nanoscale model parameters of a CTF were
Abdulhalim   +35 more
core   +1 more source

Modelling of the dielectric properties of trabecular bone samples at microwave frequency [PDF]

open access: yes, 2013
In this paper the dielectric properties of human trabecular bone are evaluated under physiological condition in the microwave range. Assuming a two components medium, simulation and experimental data are presented and discussed.
Blangino, Eugenia   +3 more
core   +2 more sources

Low‐Loss Far‐Infrared Surface Phonon Polaritons in Suspended SrTiO3 Nanomembranes

open access: yesAdvanced Functional Materials, EarlyView.
The low‐loss, highly confined, and thickness‐tunable surface phonon polaritons are demonstrated in the far‐infrared regime within transferable freestanding SrTiO3 membranes, achieving high figures of merit comparable to the previous record values from the vdW materials.
Konnor Koons   +8 more
wiley   +1 more source

Measurement of characteristic frequency of red blood cells and thrombogenic process for various hematocrit values using dielectric relaxation method

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Dielectric relaxation method has been proposed for the possibility of real-time detection of thrombosis by exploiting the electrical properties of the blood.
Yuta ASAKURA   +5 more
doaj   +1 more source

Fast Neutron Detector Based on Hybrid 2D Perovskite Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work presents the direct detection of fast neutrons using flexible hybrid 2D perovskite (PEA2PbBr4) thin‐film detectors. Thanks to their high low‐Z elements content and good charge transport, these materials enable efficient neutron detection. The thin film configuration allowed the operation at low voltage, and offer scalability, flexibility, and
Ilaria Fratelli   +11 more
wiley   +1 more source

Relative permittivity in the electrical double layer from nonlinear optics [PDF]

open access: yesThe Journal of Chemical Physics, 2018
Second harmonic generation (SHG) spectroscopy has been applied to probe the fused silica/water interface at pH 7 and the uncharged 11¯02 sapphire/water interface at pH 5.2 in contact with aqueous solutions of NaCl, NaBr, NaI, KCl, RbCl, and CsCl as low as several 10 μM. For ionic strengths up to about 0.1 mM, the SHG responses were observed to increase,
Mavis D. Boamah   +3 more
openaire   +4 more sources

Sonication‐Assisted Palladium Nanogaps in a Capacitive Structure: A Tunable and Reliable Solution for Sensitive Hydrogen Monitoring

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a capacitive hydrogen sensor with a simple structure and process. Sonication‐induced Pd nanogaps modulate the effective electrode area in response to hydrogen concentration, resulting in capacitance changes within a range predefined by physical parameters.
Sang‐kil Lee   +9 more
wiley   +1 more source

Dielectric Behaviour of Some Woven Fabrics on the Basis of Natural Cellulosic Fibers

open access: yesAdvances in Materials Science and Engineering, 2014
The electrical permittivity of the weaves obtained from natural cellulosic yarns or mixed with synthetic fibers was established with capacitor method.
Florin St. C. Mustata, Adriana Mustata
doaj   +1 more source

Determination of constitutive and morphological parameters of columnar thin films by inverse homogenization

open access: yes, 2009
A dielectric columnar thin film (CTF), characterized macroscopically by a relative permittivity dyadic, was investigated theoretically with the assumption that, on the nanoscale, it is an assembly of parallel, identical, elongated ellipsoidal inclusions ...
Lakhtakia, Akhlesh, Mackay, Tom G.
core   +1 more source

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