Results 101 to 110 of about 35,150 (277)

Capacitive Impedance Measurement: Dual-frequency Approach

Sensors, 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, Érica Silva Pinto, Gabriel Almeida Santos, Paulo Marcos de Barros Monteiro   +3 more
doaj   +1 more source

Self‐Assembled Membranes for High Ion Selectivity and Proton Blocking in Electrochemical Applications

Advanced Functional Materials, EarlyView.
Phase‐separated alkyl poly(vinylimidazolium) membranes exhibit exceptional ionic conductivity, counter‐ion selectivity, and proton‐blocking ability by forming stable micro/macrophase‐separated domains. This design overcomes the conductivity–selectivity trade‐off in conventional ion‐exchange membranes (IEMs), offering a new paradigm for high‐performance
Min Gyu Shin, José C. Díaz, Jovan Kamcev   +2 more
wiley   +1 more source

Cloaking of Arbitrarily-Shaped Objects with Homogeneous Coatings

, 2014
We present a theory for the cloaking of arbitrarily-shaped objects and demonstrate electromagnetic scattering-cancellation through designed homogeneous coatings.
Forestiere, Carlo, Miano, Giovanni, Negro, Luca Dal   +2 more
core   +1 more source

SMaRT Stacking: A Methodology to Produce Optimally Layered EMI Shields with Maximal Green Index Using Fused Deposition Modeling

Advanced Functional Materials, EarlyView.
Electromagnetic interference (EMI) shields consisting of polylactic acid (PLA) in layers with different concentrations of multiwalled carbon nanotubes (MWCNT) are produced using additive manufacturing. The permittivity function of layers with different filler concentrations is learned using data of homogeneous and randomly ordered shields.
Stijn De Smedt, Brecht Evens, Pramod Ravichandran, Panagiotis Patrinos, Frederik Van Loock, Ruth Cardinaels   +5 more
wiley   +1 more source

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

Sensors 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, Debjyoti Chowdhury, Madhurima Chattopadhyay   +2 more
doaj   +1 more source

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

, 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., Cao, D., Gilroy, M.P., Glover, I.A., Goh, H., Goo, S.K., Kwong, K.H., Michie, C., Sasloglou, K., Stephen, B., Tachtatzis, C., Wu, T.   +11 more
core  

2D Borophene: In‐Plane Hyperbolic Polaritons in the Visible Spectral Range

Advanced Functional Materials, EarlyView.
Researchers have synthesized the χ3 phase of borophene, a 2D metal, using chemical vapor deposition. Combining theory and deep‐subwavelength spectroscopy, they uncover borophene's unique anisotropic optical behavior in the visible range. This breakthrough paves the way for advanced optoelectronic devices using borophene‐based heterostructures ...
Yaser Abdi, Masoud Taleb, Maximilian Black, Soheil Hajibaba, Mohsen Moayedi, Nahid Talebi   +5 more
wiley   +1 more source

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, EarlyView.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source

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

, 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., Coronado, E., Dugay, J., Giménez-Marqués, M., Kozlova, T., van der Zant, H. S. J, Zandbergen, H. W.   +6 more
core   +2 more sources

Investigating Experimental Short Term Imprint Dynamics in Ferroelectric Hafnium Oxide Through Phase‐Field Modeling

Advanced Functional Materials, EarlyView.
Phase‐field modeling reveals the mechanisms behind short‐term ferroelectric imprint in Hf0.5Zr0.5O2 polycrystalline thin films. Combined with a charge trapping model, the proposed framework accurately reproduces coercive field shifts with pause time and their recovery through field cycling in polarization‐voltage measurements, offering valuable ...
Kévin Alhada‐Lahbabi, Benoit Manchon, Grégoire Magagnin, Chiara Lepri, Sara Gonzalez, Ingrid Cañero Infante, Martine Le Berre, Bertrand Vilquin, Jordan Bouaziz, Brice Gautier, Damien Deleruyelle   +10 more
wiley   +1 more source