A5100742708- Electrical and Bioimpedance Tomography
- Flow Measurement and Analysis
- Non-Destructive Testing Techniques
- Geophysical and Geoelectrical Methods
- Microfluidic and Bio-sensing Technologies
- Reservoir Engineering and Simulation Methods
- Electrostatics and Colloid Interactions
- Fluid Dynamics and Mixing
- Photonic and Optical Devices
- Fault Detection and Control Systems
- NMR spectroscopy and applications
- Advanced Sensor and Energy Harvesting Materials
- Geomechanics and Mining Engineering
- Gas Sensing Nanomaterials and Sensors
- Hydrocarbon exploration and reservoir analysis
- Geoscience and Mining Technology
- Neural Networks and Reservoir Computing
- Optical Network Technologies
- Electrodeposition and Electroless Coatings
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Advancements in Battery Materials
- Water Systems and Optimization
- Minerals Flotation and Separation Techniques
- Magnetic Field Sensors Techniques
University of Leeds
2014-2024
Central South University
2024
Institute of Process Engineering
2021-2024
University of Chinese Academy of Sciences
2021-2024
Shihezi University
2024
Xinjiang Production and Construction Corps
2024
Shenzhen Institute of Information Technology
2023
Harbin Institute of Technology
2021-2023
Chongqing University
2023
Ghent University
2019-2022
Measurement of electrical resistivity via four probes is widely used in a variety applications ranging from geophysical prospecting to silicon wafer manufacture. Electrical tomography an extension this approach and performed array equi-spaced electrodes mounted into the periphery process vessel map non-intrusively spatial distribution resistivities within. The digitized boundary data are `inverted' by image reconstruction algorithm produce internal distribution. This paper focuses on design...
Programmable photonic circuits, in contrast to classical integrated circuits (PIC), can be configured at run-time route light along different paths and perform optical functions. This is accomplished by a mesh of interconnected waveguides that are coupled using electrically actuated tunable couplers phase shifters. Such waveguide redefine the connectivity between functional building blocks, but also into interferometric resonant wavelength filters. The generic nature such programmable PICs...
This paper presents the development of a new electrical impedance tomography system for online measurement two-phase flows with axial velocities up to 10 ms/sup -1/. The is designed in modular fashion and can consist several data acquisition modules computing modules. module includes voltage controlled current source direct-current-restoration circuit, an equal-width pulse synthesizer unit synchronized digital demodulation unit. A concept switching scheme developed enhance ac coupling speed....
This paper reports the performance of a research prototype new multiphase flow instrument to non-invasively measure phase rates, with capability rapidly image distributions two- and three-phase (gas and/or oil in water) flows. The is based on novel concepts combining vector Electrical Impedance Tomography (EIT) sensor (for measuring dispersed-phase velocity fraction) an electromagnetic metre (EMF, for continuous-phase EIT input) gradiomanometer flow-mixture density (FDM), addition on-line...
Abstract Humidity‐based power generation that converts internal energy of water molecules into electricity is an emerging approach for harvesting clean from nature. Here it proposed intrinsic gradient within a humidity field near sweating surfaces, such as rivers, soil, or animal skin, promising resource when integrated with liquid‐infused nanofluidics. Specifically, capillary‐stabilized ionic liquid (IL, Omim + Cl ‐ ) film exposed to the above create sustained transmembrane water‐content...
Oil-in-water two-phase flows are often encountered in the upstream petroleum industry. The measurement of phase flow rates is particular importance for managing oil production and water disposal and/or reinjection. complexity oil-in-water structures creates a challenge to measurement. This paper proposes new method metering, which based on use dual-modality system multidimensional data fusion. Electrical Resistance Tomography (ERT) used combination with commercial off-the-shelf...
Employing dual-modality tomography inherently involves data from multiple dimensions, and thus a coherent approach is required to fully exploit the information various dimensions. This paper describes novel for electrical resistance capacitance (ERT-ECT) visualize gas-oil-water flow in horizontal pipeline. Compared with conventional methods tomographic systems, based on thresholding takes account of multi-dimensional data, which therefore capable providing insights into investigated both...
Abstract Circadian humidity fluctuation is an important factor that affects human life all over the world. Here we show spherical cap-shaped ionic liquid drops sitting on nanowire array are able to continuously output electricity when exposed outdoor air, which attribute daily induced directional capillary flow. Specifically, could absorb/desorb water around liquid/vapor interface and swell/shrink depending air fluctuation. While pinning of drop by suppresses advancing/receding triple-phase...
Measurements on an upwards air–water flow are reported that were obtained simultaneously with a dual-plane electrical resistance tomograph (ERT) and wire-mesh sensor (WMS). The ultimate measurement target of both ERT WMS is the same, conductivity medium. non-intrusive device whereas requires net wires physically crosses flow. This paper presents comparisons between results from for evaluation calibration ERT. length vertical testing pipeline section 3 m internal diameter 50 mm. Two distinct...
In the aqueous-based two-phase flow, if void fraction of dispersed phase exceeds 0.25, conventional electrical impedance tomography (EIT) produces a considerable error due to linear approximation sensitivity back-projection (SBP) method, which limits EIT's wider application in process industry. this paper, an EIT sensing system is able handle full range flow reported. This employs voltage source, conducts true mutual measurement and reconstructs online image with modified (MSBP) algorithm....
Abstract We propose a novel filter circuit that incorporates double ring resonator with balanced Mach–Zehnder interferometer (MZI). The has response equivalent to conventional loaded MZI filter, but added flexibility in terms of configurability. second-order can also be cascaded realize higher-order filters. two-stage input and output coupler further reduce the effect dispersion. A combination local global optimization strategies program using tailored objective functions, have been tested...
The characterization of air-water two-phase vertical flow in a 12 m loop with 1.5 section is studied by using electrical resistance tomography (ERT). By applying fast data collection to dual-plane ERT sensor and an iterative image reconstruction algorithm, relevant information gathered for implementation characteristics, particularly regime recognition. A cross-correlation method also used interpret the velocity distribution gas phase on cross section. paper demonstrates that can now be...
Abstract BACKGROUND: In order to improve the performance of a counter‐current bubble column, radial variations gas hold‐ups and mean were investigated in 0.160 m i.d. column using electrical resistance tomography with two axial locations (Plane 1 Plane 2). all experiments liquid phase was tap water air. The superficial velocity varied from 0.02 0.25 s −1 , 0 0.01 . effect on distribution is discussed. RESULTS: hold‐up profile gas–liquid determined by tomography. slightly influences under...
This paper reviews governing theorems in electrical impedance sensing for analysing the relationships of boundary voltages obtained from different strategies. It reports that both voltage values and associated sensitivity matrix an alternative strategy can be derived a set full independent measurements other strategy. A new method regional imaging with limited is reported. also proves coefficient back-projection algorithm does not always work all strategies, unless diagonal elements...
Low-grade wind with airspeed V < 5 m/s, while distributed far more abundantly, is still challenging to extract because current turbine-based technologies require particular geography (e.g., wide-open land or off-shore regions) year-round > m/s effectively rotate the blades. Here, we report that low-speed airflow can sensitively enable directional flow within nanowire-anchored ionic liquid (IL) drops. Specifically, wind-induced air/liquid friction continuously raises leeward fluid...
Petroleum engineers need real-time understanding of the dynamic information reservoirs and production in development process, which is essential for fine description oil gas reservoirs. Due to non-invasive feature electromagnetic waves, more have received attention capture dynamics with electrical resistance tomography (ERT). By measuring distribution resistivity on surface, ERT can offer subsurface media. The theory foundation technology are presented this study context monitoring reservoir...