Results 81 to 90 of about 36,518 (183)

Substrate Integrated Waveguide (SIW)-Based Wireless Temperature Sensor for Harsh Environments

open access: yesSensors, 2018
This paper presents a new wireless sensor structure based on a substrate integrated circular waveguide (SICW) for the temperature test in harsh environments.
Qiulin Tan   +5 more
doaj   +1 more source

Smart vest for respiratory rate monitoring of COPD patients based on non-contact capacitive sensing [PDF]

open access: yes, 2018
In this paper, a first approach to the design of a portable device for non-contact monitoring of respiratory rate by capacitive sensing is presented.
Barbarov-Rostán, Gerardo   +7 more
core   +1 more source

Innovative NDT technique for detection of surface cracks based on ferrofluids excited with DC and AC magnetic fields [PDF]

open access: yes, 2015
Innovative NDT technique for detection of surface cracks based on ferrofluids excited with DC and AC magnetic fieldsAn innovative NDT technique is proposed for surface inspection of materials not necessarily magnetic or conductive, based on local ...
Cabrera, Blai   +5 more
core   +2 more sources

Plasmonic Metamaterials: Physical Background and Some Technological Applications [PDF]

open access: yes, 2019
New technological frontiers appear every year, and few are as intriguing as the field of plasmonic metamaterials (PMMs). These uniquely designed materials use coherent electron oscillations to accomplish an astonishing array of tasks, and they present ...
Schmidt, Benjamin G.
core   +1 more source

Capacitive Impedance Measurement: Dual-frequency Approach

open access: yesSensors, 2019
The most widely used technique for measuring capacitive impedances (or complex electrical permittivity) is to apply a frequency signal to the sensor and measure the amplitude and phase of the output signal.
Alan Kardek Rêgo Segundo   +3 more
doaj   +1 more source

A capacitive sensor-based approach for type-2 diabetes detection via bio-impedance analysis of erythrocytes

open access: yesSensors International
This paper presents a novel capacitive sensor-based device for detecting type-2 diabetes through blood analysis. The proposed methodology measures changes in the complex permittivity of red blood cells (RBCs) caused by elevated glucose levels, affecting ...
Santu Guin   +2 more
doaj   +1 more source

Implementation of a herd management system with wireless sensor networks [PDF]

open access: yes, 2009
This paper investigates an adaptation of Wireless Sensor Networks (WSNs) to cattle monitoring applications. The proposed solution facilitates the requirement for continuously assessing the condition of individual animals, aggregating and reporting this ...
Andonovic, I.   +11 more
core  

On chemiluminescent emission from an infiltrated chiral sculptured thin film

open access: yes, 2010
The theory describing the far-field emission from a dipole source embedded inside a chiral sculptured thin film (CSTF), based on a spectral Green function formalism, was further developed to allow for infiltration of the void regions of the CSTF by a ...
Beck   +38 more
core   +1 more source

Effects of temperature on the impedance of piezoelectric actuators used for SHM [PDF]

open access: yes, 2014
— FEM modeling of piezoelectric patches used as actuators and sensors for SHM applications. — Test/analysis correlation of temperature effects in piezoelectric materials and glue — Numerical methods associated with the prediction of electric transfers ...
BALMES, Etienne   +3 more
core   +6 more sources

Phase-transitions in spin-crossover thin films probed by graphene transport measurements

open access: yes, 2016
Future multi-functional hybrid devices might combine switchable molecules and 2D material-based devices. Spin-crossover compounds are of particular interest in this context since they exhibit bistability and memory effects at room temperature while ...
Aarts, M.   +6 more
core   +2 more sources

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