Results 81 to 90 of about 11,806 (297)

Novel Microwave Sensors Based on Split Ring Resonators for Measuring Permittivity

IEEE Access, 2018
Measuring the electromagnetic properties of materials has important applications in many fields. In this paper, two electrically small sensors based on the split ring resonators (SRRs) with extended long legs, i.e., two-layer and three-layer magnetic ...
Kuiwen Xu, Yang Liu, Shichang Chen, Peng Zhao, Liang Peng, Linxi Dong, Gaofeng Wang   +6 more
doaj   +1 more source

Extremely Sensitive Microwave Sensor for Evaluation of Dielectric Characteristics of Low-Permittivity Materials

, 2020
In this paper, an extremely sensitive microwave sensor is designed based on a complementary symmetric S shaped resonator (CSSSR) to evaluate dielectric characteristics of low-permittivity material.
Xingyun Zhang, Ayesha Kosar Fahad, Shahid Ullah, Tanveerul Haq, Cunjun Ruan, Wenlong He   +5 more
core   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Temporal Monitoring of the Soil Freeze-Thaw Cycles over a Snow-Covered Surface by Using Air-Launched Ground-Penetrating Radar

Remote Sensing, 2015
We tested an off-ground ground-penetrating radar (GPR) system at a fixed location over a bare agricultural field to monitor the soil freeze-thaw cycles over a snow-covered surface.
Khan Zaib Jadoon, Lutz Weihermüller, Matthew F. McCabe, Davood Moghadas, Harry Vereecken, Sebastíen Lambot   +5 more
doaj   +1 more source

CARATTERIZZAZIONE ELETTRICA E SPETTROSCOPICA AD IMPEDENZA DI OSSIDI METALLICI NANOSTRUTTURATI PER IL RILEVAMENTO DI ALCANI VOLATILI

, 2009
Chemoresistive gas sensors using semiconductor metal-oxides have proven to be excellent in important characteristics such as sensitivity, long-term stability, robustness and price. Solid solutions of mixed Sn and Ti oxides have shown promising results in
Cervi, Alan
core  

Design and development of micro-electromechanical acoustic emission sensors [PDF]

, 2012
Non-Destructive Testing (NDT) is a vital technique in modern engi- neering, enabling the monitoring of the structural health of a com- ponent and therefore enabling the prediction of component failure.
Pickwell, A. J.
core  

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

A Comparative Study Between Micro and Millimeter Impedance Sensor Designs for Type-2 Diabetes Detection

Micro
In recent years, various types of sensors have been developed at both millimeter (mm) and micrometer (µm) scales for numerous biomedical applications. Each design has its own advantages and limitations.
Santu Guin, Debjyoti Chowdhury, Madhurima Chattopadhyay   +2 more
doaj   +1 more source

A Carbon Nanotube-based Sensor for CO2 Monitoring

Sensors, 2001
A carbon dioxide (CO2) sensor is fabricated by depositing a thin layer of a multiwall carbon nanotube (MWNT) – silicon dioxide (SiO2) composite upon a planar inductorcapacitor resonant circuit.
Craig A. Grimes, Keat G. Ong
doaj   +1 more source

Atmospheric Icing Sensors - Capacitive Techniques

, 2013
The application of capacitive sensing technique is widely distributed in different physical domains primarily because of the diversity in dielectric permittivity and due to its minimum loading error and inertial effects.
Virk, Muhammad Shakeel, Mughal, Umair Najeeb   +1 more
core