Electrical capacitance tomography (ECT) is a method for determination of the dielectric permittivity distribution in the interior of an object from external capacitance measurements. It is a close relative of electrical impedance tomography[2] and is proposed as a method for industrial process monitoring.
Although capacitance sensing methods were in widespread use the idea of using capacitance measurement to form images is attributed to Maurice Beck and co-workers at UMIST in the 1980s.[3]
Although usually called tomography, the technique differs from conventional tomographic methods, in which high resolution images are formed of slices of a material. The measurement electrodes, which are metallic plates, must be sufficiently large to give a measureable change in capacitance. This means that very few electrodes are used, typically eight to sixteen electrodes. An N-electrode system can only provide N(N−1)/2 independent measurements. This means that the technique is limited to producing very low resolution images of approximate slices. However, ECT is fast, and relatively inexpensive.
^Wanta, Damian; Smolik, Waldemar T.; Kryszyn, Jacek; Wróblewski, Przemysław; Midura, Mateusz (2022). "A Run-Time Reconfiguration Method for an FPGA-Based Electrical Capacitance Tomography System". Electronics. 11 (4): 545. doi:10.3390/electronics11040545.
^M Soleimani, W R B Lionheart, Nonlinear image reconstruction in electrical capacitance tomography using experimental data, Meas. Sci. Technol., 16, 2005, pp 1987–1996
^S M Huang, A Plaskowski, C G Xie and M S Beck, Capacitance-based tomographic flow imaging system, Electronics Letters, 24 (7), 1988, pp 418–19.
and 29 Related for: Electrical capacitance tomography information
Electricalcapacitancetomography (ECT) is a method for determination of the dielectric permittivity distribution in the interior of an object from external...
Electrical impedance tomography (EIT) is a noninvasive type of medical imaging in which the electrical conductivity, permittivity, and impedance of a part...
Tomography is imaging by sections or sectioning that uses any kind of penetrating wave. The method is used in radiology, archaeology, biology, atmospheric...
Congestion Notification Eddy-current testing Edge crush test Electricalcapacitancetomography Elementary comparison testing European Centre of Technology...
tomography, magnetic resonance imaging and gamma ray tomography, and ultra-sound tomography, new and emerging methods such as electricalcapacitance tomography...
using a Quadtree Non-Uniform Structured Mesh for Modeling in ElectricalCapacitanceTomography". Proceedings of the National Academy of Sciences, India Section...
crystallization, bubble columns, packed beds, flows, and separations. Electricalcapacitancetomography instruments released by the company include: m3000c, m3000dual...
the University of Manchester, UK, where he specialises in electricalcapacitancetomography (ECT). Yang obtained his BEng degree in 1982 from Tsinghua...
using a Quadtree Non-Uniform Structured Mesh for Modeling in ElectricalCapacitanceTomography". Proceedings of the National Academy of Sciences, India Section...
techniques such as near-infrared, x-ray, gamma ray, electricalcapacitance, electrical resistance tomography are used to quantify liquid distribution patterns...
(2022). "A Run-Time Reconfiguration Method for an FPGA-Based ElectricalCapacitanceTomography System". Electronics. 11 (4): 545. doi:10.3390/electronics11040545...
electrostatics, the permittivity plays an important role in determining the capacitance of a capacitor. In the simplest case, the electric displacement field...
and other technical standards. capacitance The ability of a body to hold an electrical charge. capacitor An electrical component that stores energy in...
electrical parameters gave rise to development of techniques such as Scanning Spreading Resistance Microscopy (SSRM) and Electrochemical Capacitance-Voltage...
Capnograph Electroencephalograph records the electrical activity of the brain Ergometer Body fat meter Computed tomography Magnetic resonance imaging Medical ultrasonography...
temperature Transduction: resistance, induction, capacitance Medical devices are also divided into different electrical safety and risk classifications. These classes...
increases the width of the depletion layer, which decreases the junction's capacitance and increases the region with an electric field that will cause electrons...
the distance between the contacts and can be measured as a change in capacitance. Piezoresistive detection – Cantilevers can be fabricated with piezoresistive...
such as computed tomography (CT) or X-rays. Wireless power is the transmission of electrical energy from a power source to an electrical load without interconnecting...
Serup J (1988). "Assessment of skin moisture. Measurement of electrical conductance, capacitance and transepidermal water loss". Acta Dermato-venereologica...
These devices work by applying a stress using electrical power and measuring strain using capacitance variations. Electrostatically actuated MEMs have...
June 2022). "A biomimetic elastomeric robot skin using electrical impedance and acoustic tomography for tactile sensing". Science Robotics. 7 (67): eabm7187...
supercapacitors. The device reached volumetric capacitance of over 1,100 F/cm3. This corresponds to a specific capacitance of the constituent MnO2 of 1,145 F/g...