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Dr GEORGIOS DIMITRAKIS's Outputs (11)

The use of free-space microwave non-destructive techniques: simulation of damage detection in carbon fibre reinforced composites (2019)
Presentation / Conference Contribution
Munalli, D., Dimitrakis, G., Chronopoulos, D., Greedy, S., & Long, A. (2019, November). The use of free-space microwave non-destructive techniques: simulation of damage detection in carbon fibre reinforced composites. Presented at 11th Symposium on NDT in Aerospace, Paris, France

Microwave non-destructive testing (MNDT) methods represent an effective solution in detecting defects within composite structures with relatively low electrical conductivity. They offer the advantage to overcome the problems of traditional NDT techni... Read More about The use of free-space microwave non-destructive techniques: simulation of damage detection in carbon fibre reinforced composites.

Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation (2019)
Journal Article
Dundas, A. A., Sanni, O., Dubern, J.-F., Dimitrakis, G., Hook, A. L., Irvine, D. J., Williams, P., & Alexander, M. R. (2019). Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation. Advanced Materials, 31(49), Article 1903513. https://doi.org/10.1002/adma.201903513

ynthetic materials are an everyday component of modern healthcare yet often fail routinely as a consequence of medical‐device‐centered infections. The incidence rate for catheter‐associated urinary tract infections is between 3% and 7% for each day o... Read More about Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation.

Dynamics of flow transitions from bubbly to churn flow in high viscosity oils and large diameter columns (2019)
Journal Article
Mohammed, S. K., Hasan, A. H., Ibrahim, A., Dimitrakis, G., & Azzopardi, B. J. (2019). Dynamics of flow transitions from bubbly to churn flow in high viscosity oils and large diameter columns. International Journal of Multiphase Flow, 120, Article 103095. https://doi.org/10.1016/j.ijmultiphaseflow.2019.103095

The dynamic behaviour of the gas-liquid two phase flows and in particular the flow pattern stability and transition between the flow regimes are influenced significantly by both the properties of the liquid and gas as well as the pipe diameter. The m... Read More about Dynamics of flow transitions from bubbly to churn flow in high viscosity oils and large diameter columns.

Optimised mode selection in electromagnetic sensors for real time, continuous and in-situ monitoring of water cut in multi-phase flow systems (2019)
Journal Article
Yuan, C., Bowler, A., Davies, J. G., Hewakandamby, B., & Dimitrakis, G. (2019). Optimised mode selection in electromagnetic sensors for real time, continuous and in-situ monitoring of water cut in multi-phase flow systems. Sensors and Actuators B: Chemical, 298, Article 126886. https://doi.org/10.1016/j.snb.2019.126886

Measurements of the composition of multiphase flows, especially water-cut in oil-water flow, is a frequently encountered problem in the petroleum industry. New techniques that can offer improvements towards that are continuously sought and the use of... Read More about Optimised mode selection in electromagnetic sensors for real time, continuous and in-situ monitoring of water cut in multi-phase flow systems.

Methodology for the synthesis of methacrylate monomers using designed single mode microwave applicators (2019)
Journal Article
Dundas, A. A., Hook, A. L., Alexander, M. R., Kingman, S. W., Dimitrakis, G., & Irvine, D. J. (2019). Methodology for the synthesis of methacrylate monomers using designed single mode microwave applicators. Reaction Chemistry and Engineering, 4(8), 1472-1476. https://doi.org/10.1039/c9re00173e

© 2019 The Royal Society of Chemistry. A novel single-well prototype high throughput microwave reactor geometry has been produced and shown to be capable of synthesizing an array of non-commercially available methacrylate monomers. The reactor, which... Read More about Methodology for the synthesis of methacrylate monomers using designed single mode microwave applicators.

Experimental and computational investigation of heat transfer in a microwave-assisted flow system (2019)
Journal Article
Damilos, S., Radhakrishnan, A. N. P., Dimitrakis, G., Tang, J., & Gavriilidis, A. (2019). Experimental and computational investigation of heat transfer in a microwave-assisted flow system. Chemical Engineering and Processing: Process Intensification, 142, Article 107537. https://doi.org/10.1016/j.cep.2019.107537

Microwave technology is gaining popularity as a tool for chemical process intensification and an alternative to conventional heating. However, in flow systems non-uniform temperature profiles are commonly encountered and hence methods to characterise... Read More about Experimental and computational investigation of heat transfer in a microwave-assisted flow system.

Electromagnetic shielding effectiveness of carbon fibre reinforced composites (2019)
Journal Article
Munalli, D., Dimitrakis, G., Chronopoulos, D., Greedy, S., & Long, A. (2019). Electromagnetic shielding effectiveness of carbon fibre reinforced composites. Composites Part B: Engineering, 173, Article 106906. https://doi.org/10.1016/j.compositesb.2019.106906

This paper reports results on the shielding effectiveness parameter of laminated epoxy composites with carbon fibre reinforcements. Measurements of shielding effectiveness were carried out with a coaxial transmission line testing chamber according to... Read More about Electromagnetic shielding effectiveness of carbon fibre reinforced composites.

Highly efficient multifunctional ionic liquid for PET glycolysis under microwave irradiation (2019)
Journal Article
Cot, S., Leu, M. K., Kalamiotis, A., Dimitrakis, G., Sans Sangorrin, V., de Pedro, I., & Cano, I. (2019). Highly efficient multifunctional ionic liquid for PET glycolysis under microwave irradiation. ChemPlusChem, 84(7), 786-793. https://doi.org/10.1002/cplu.201900075

An oxalate‐bridged binuclear iron(III) ionic liquid combined with an imidazolium based cation, (dimim)2[Fe2Cl4(μ‐ox)], was synthesized and characterized by a wide range of techniques. This halometallate ionic liquid was active in catalyzing the depol... Read More about Highly efficient multifunctional ionic liquid for PET glycolysis under microwave irradiation.

Optimised use of dielectric spectroscopy at microwave frequencies for direct online monitoring of polymerisation reactions (2019)
Journal Article
Kalamiotis, A., Ilchev, A., Irvine, D. J., & Dimitrakis, G. (2019). Optimised use of dielectric spectroscopy at microwave frequencies for direct online monitoring of polymerisation reactions. Sensors and Actuators B: Chemical, 290C, 34-40. https://doi.org/10.1016/j.snb.2019.03.120

This study reports the first use of dielectric spectroscopy over at a wide frequency range to monitor, in real time, the progress of a ring opening polymerisation. An open-ended coaxial line sensor was placed directly into the reaction medium of a po... Read More about Optimised use of dielectric spectroscopy at microwave frequencies for direct online monitoring of polymerisation reactions.

Predicting the Behaviour of Near-Critical and Supercritical Alcohols at Microwave Frequencies: Validation of Molecular Dynamic Simulations as a Tool that can Substitute for Measurements under Extreme Experimental Conditions (2019)
Journal Article
Robinson, D., Irvine, D. J., Robinson, J. P., Lester, E. H., Kingman, S. W., & Dimitrakis, G. (2019). Predicting the Behaviour of Near-Critical and Supercritical Alcohols at Microwave Frequencies: Validation of Molecular Dynamic Simulations as a Tool that can Substitute for Measurements under Extreme Experimental Conditions. Journal of Supercritical Fluids, 146, 165-171. https://doi.org/10.1016/j.supflu.2019.01.018

Equilibrium and non-equilibrium molecular dynamic simulations, predicting the dielectric properties of near-critical and supercritical methanol and ethanol at microwave frequencies have been carried out. The autocorrelation functions of the dielectri... Read More about Predicting the Behaviour of Near-Critical and Supercritical Alcohols at Microwave Frequencies: Validation of Molecular Dynamic Simulations as a Tool that can Substitute for Measurements under Extreme Experimental Conditions.