Results 21 to 30 of about 345,966 (323)

Optical Fiber Distributed Sensing Network for Thermal Mapping in Radiofrequency Ablation Neighboring a Blood Vessel

open access: yesBiosensors, 2022
Radiofrequency ablation (RFA) is a minimally invasive form of thermotherapy with great potential in cancer care, having the capability of selectively ablating tumoral masses with a surface area of several cm2.
Akbota Sametova   +4 more
doaj   +1 more source

Using a Parallel Helical Sensing Cable for the Distributed Measurement of Ground Deformation

open access: yesSensors, 2019
Surface and underground stretched deformation is one of the most important physical measurement quantities for geological-disaster monitoring. In this study, a parallel helical sensing cable (PHSC) based on the time–domain reflectometry (TDR ...
Xiushan Wu   +4 more
doaj   +1 more source

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

open access: yesSensors, 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   +3 more
doaj   +1 more source

Electromagnetic Wave Scattering by Small Impedance Particles of an Arbitrary Shape [PDF]

open access: yes, 2012
Scattering of electromagnetic (EM) waves by one and many small ($ka\ll 1$) impedance particles $D_m$ of an arbitrary shape, embedded in a homogeneous medium, is studied. Analytic formula for the field, scattered by one particle, is derived. The scattered
A. G. Ramm   +16 more
core   +5 more sources

Frequency-Diverse Holographic Metasurface Antenna for Near-Field Microwave Computational Imaging

open access: yesFrontiers in Materials, 2021
This article presents a holographic metasurface antenna with stochastically distributed surface impedance, which produces randomly frequency-diverse radiation patterns. Low mutual coherence electric field patterns generated by the holographic metasurface
Jiaqi Han   +12 more
doaj   +1 more source

Noninvasive Solution for Electrochemical Impedance Spectroscopy on Metallic Works of Art [PDF]

open access: yes, 2012
Metallic works of art of cultural relevance are continuously subjected to corrosion as the environment becomes increasingly polluted. A fast and simple method to in situ assess the conservation conditions is therefore required.
Corbellini, Simone   +2 more
core   +1 more source

The Apparent Constant-Phase-Element Behavior of a Disk Electrode with Faradaic Reactions [PDF]

open access: yes, 2007
Geometry-induced current and potential distributions modify the global impedance response of a disk electrode subject to faradaic reactions. The problem was treated for both linear and Tafel kinetic regimes.
Huang, Vicky Mei-Wen   +4 more
core   +3 more sources

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

open access: yesRadio 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

Tomographic imaging and scanning thermal microscopy: thermal impedance tomography [PDF]

open access: yes, 2002
The application of tomographic imaging techniques developed for medical applications to the data provided by the scanning thermal microscope will give access to true three-dimensional information on the thermal properties of materials on a mm length ...
A. Hammiche   +13 more
core   +1 more source

Nonlinear mechanisms in passive microwave devices [PDF]

open access: yes, 2011
Premi extraordinari doctorat curs 2010-2011, àmbit d’Enginyeria de les TICThe telecommunications industry follows a tendency towards smaller devices, higher power and higher frequency, which imply an increase on the complexity of the electronics ...
Rocas Cantenys, Eduard
core   +4 more sources

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