Results 21 to 30 of about 33,682 (245)

Conformal Design of a High-Performance Antenna for Energy-Autonomous UWB Communication

Sensors, 2021
In view of the need for communication with distributed sensors/items, this paper presents the design of a single-port antenna with dual-mode operation, representing the front-end of a future generation tag acting as a position sensor, with identification
Shobit Agarwal, Diego Masotti, Symeon Nikolaou, Alessandra Costanzo   +3 more
doaj   +1 more source

The reflection coefficient of a surface of Rayleigh distributed impedance [PDF]

Quarterly of Applied Mathematics, 1957
Formulas are obtained for the probability distribution p ( k )
openaire   +1 more source

Application of the surface‐charge distribution method to the interpretation of impedance measurements of a rocket‐borne dipole antenna [PDF]

Radio Science, 1998
In a companion paper [Béghin and Kolesnikova, this issue], we have presented the surface charge‐distribution (SCD) method for modeling a complex devices's behavior in the radio frequency range around the plasma resonance. Here we give one application of this method to the interpretation of published experimental data of a sounding rocket experiment ...
E. Kolesnikova, C. Béghin
openaire   +1 more source

CURRENT DISTRIBUTION AND INPUT IMPEDANCE OF A STRIP LOOP ANTENNA LOCATED ON THE SURFACE OF A CIRCULAR COLUMN FILLED WITH A RESONANT MAGNETOPLASMA [PDF]

Progress In Electromagnetics Research B, 2013
We study the electrodynamic characteristics of a strip loop antenna located on the surface of a circular column fllled with a resonant magnetoplasma and surrounded by a homogeneous isotropic background medium. The antenna current is excited by a time-harmonic voltage creating an electric fleld with the azimuthal component in a narrow gap on the strip ...
Alexander V. Kudrin, Anna S. Zaitseva, Tatyana M. Zaboronkova, Sergej S. Zilitinkevich   +3 more
openaire   +1 more source

Three-dimensional highway-like graphite flakes/carbon fiber hybrid electrode for electrochemical biosensor

Materials Today Advances, 2022
Carbon-based electrodes are promising candidates for developing cheap, miniaturized, and disposable biosensors for effective, point-of-care disease management.
Y. Yu, C. Jiang, X.T. Zheng, Y. Liu, W.P. Goh, R.H.H. Lim, S.C.L. Tan, L. Yang   +7 more
doaj   +1 more source

Study on Elastic Helical TDR Sensing Cable for Distributed Deformation Detection

Sensors, 2012
In order to detect distributed ground surface deformation, an elastic helical structure Time Domain Reflectometry (TDR) sensing cable is shown in this paper.
Qing Li, Renyuan Tong, Ming Li
doaj   +1 more source

The Deposition of a Lectin from Oreochromis niloticus on the Surface of Titanium Dioxide Nanotubes Improved the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

Biomolecules, 2021
Titanium and its alloys are used as biomaterials for medical and dental applications, due to their mechanical and physical properties. Surface modifications of titanium with bioactive molecules can increase the osseointegration by improving the interface
Keicyanne Fernanda Lessa dos Anjos, Cynarha Daysy Cardoso da Silva, Mary Angela Aranda de Souza, Alessandra Batista de Mattos, Luana Cassandra Breitenbach Barroso Coelho, Giovanna Machado, Janaina Viana de Melo, Regina Celia Bressan Queiroz de Figueiredo   +7 more
doaj   +1 more source

System-Level Biochip for Impedance Sensing and Programmable Manipulation of Bladder Cancer Cells

Sensors, 2011
This paper develops a dielectrophoretic (DEP) chip with multi-layer electrodes and a micro-cavity array for programmable manipulations of cells and impedance measurement. The DEP chip consists of an ITO top electrode, flow chamber, middle electrode on an
Cheng-Hsin Chuang, Yao-Wei Huang, Yao-Tung Wu   +2 more
doaj   +1 more source

An improved Carbon-Coating Method for LiFePO4/C composite derived from Fe3+ precursor

International Journal of Electrochemical Science, 2012
In this paper, a novel hydroxyethylcellulose (HEC)-assisted carbon-coating method was developed to synthesize LiFePO4/C composites. The structure and morphological transformation of the as-prepared samples were studied using a combination of X-ray ...
Rui Rui Zhao, Guo Zheng Ma, Li Cai Zhu, Ai Ju Li, Hong Yu Chen   +4 more
doaj   +1 more source

Reducing Influence of Hardware of Communication Station on Characteristics of Asymmetric Biconical Dipole Using Magneto-Dielectric Substrate on Finite-Size Metal Screen

East European Journal of Physics
Based on the approximate analytical solution previously obtained by the authors to the problem of excitation (radiation, scattering) of electromagnetic waves by an asymmetric biconical dipole with distributed surface impedance (constant and variable) in ...
Mikhail V. Nesterenko, Victor A. Katrich, Svetlana V. Pshenichnaya, Sergey А. Pogarsky   +3 more
doaj   +1 more source