All Outputs (10)

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.

The relationship of dielectric response and water activity in food (2018)
Journal Article
Renshaw, R. C., Dimitrakis, G. A., Robinson, J. P., & Kingman, S. W. (2019). The relationship of dielectric response and water activity in food. Journal of Food Engineering, 244, 80-90. https://doi.org/10.1016/j.jfoodeng.2018.08.037

This study has deduced a correlation between points of inflection of water activity and loss factor with respect to moisture content. A point of inflection in loss factor with respect to moisture content was found to coincide with the sorption isothe... Read More about The relationship of dielectric response and water activity in food.

Wet steam measurement techniques (2018)
Journal Article
Walker, D., Barham, S., Giddings, D., & Dimitrakis, G. (2019). Wet steam measurement techniques. Reviews in Chemical Engineering, 35(5), 627-648. https://doi.org/10.1515/revce-2017-0078

In recent years a greater need for power station efficiency has become evident; improving turbine blade efficiency is one of the methods proposed. This efficiency relies upon the wetness of the steam that comes into contact with the blades of the low... Read More about Wet steam measurement techniques.

Selective molecular annealing: in situ small angle X-ray scattering study of microwave-assisted annealing of block copolymers (2017)
Journal Article
Toolan, D. T., Adlington, K., Isakova, A., Kalamiotis, A., Mokarian-Tabari, P., Dimitrakis, G., …Howse, J. R. (2017). Selective molecular annealing: in situ small angle X-ray scattering study of microwave-assisted annealing of block copolymers. Physical Chemistry Chemical Physics, 19(31), 20412--20419. https://doi.org/10.1039/c7cp03578k

Microwave annealing has emerged as an alternative to traditional thermal annealing approaches for optimising block copolymer self-assembly. A novel sample environment enabling small angle X-ray scattering to be performed in situ during microwave anne... Read More about Selective molecular annealing: in situ small angle X-ray scattering study of microwave-assisted annealing of block copolymers.

Exemplification of catalyst design for microwave selective heating and its application to efficient in situ catalyst synthesis (2017)
Journal Article
Wang, K., Dimitrakis, G., & Irvine, D. J. (2017). Exemplification of catalyst design for microwave selective heating and its application to efficient in situ catalyst synthesis. Chemical Engineering and Processing: Process Intensification, 122, https://doi.org/10.1016/j.cep.2017.01.012

The use of dielectric spectroscopy to develop an underpinning understanding of the molecular transformations involved in achieving the successful, rapid in situ synthesis of a catalytic chain transfer polymerisation (CCTP) catalyst using microwave he... Read More about Exemplification of catalyst design for microwave selective heating and its application to efficient in situ catalyst synthesis.

Traceable measurement and imaging of the complex permittivity of a multiphase mineral specimen at micron scales using a microwave microscope (2016)
Journal Article
Gregory, A., Blackburn, J., Hodgetts, T., Clarke, R., Lees, K., Plint, S., & Dimitrakis, G. (2017). Traceable measurement and imaging of the complex permittivity of a multiphase mineral specimen at micron scales using a microwave microscope. Ultramicroscopy, 172, 65-74. https://doi.org/10.1016/j.ultramic.2016.11.001

This paper describes traceable measurements of the dielectric permittivity and loss tangent of a multiphase material (particulate rock set in epoxy) at micron scales using a resonant Near-Field Scanning Microwave Microscope (NSMM) at 1.2 GHz. Calibra... Read More about Traceable measurement and imaging of the complex permittivity of a multiphase mineral specimen at micron scales using a microwave microscope.

Characterisation of potato crisp effective porosity using micro-CT (2016)
Journal Article
Renshaw, R. C., Robinson, J. P., Dimitrakis, G., Bows, J. R., & Kingman, S. W. (2016). Characterisation of potato crisp effective porosity using micro-CT. Journal of the Science of Food and Agriculture, 96(13), 4440-4448. https://doi.org/10.1002/jsfa.7655

Background The effective porosity is an important quantitative parameter for food products that has a significant effect on taste and quality. It is challenging to quantify the apparent porosity of fried potato crisps as they have a thin irregular... Read More about Characterisation of potato crisp effective porosity using micro-CT.

Improving the design of industrial microwave processing systems through prediction of the dielectric properties of complex multi-layered materials (2015)
Journal Article
Katrib, J., Folorunso, O., Dodds, C., Dimitrakis, G., & Kingman, S. W. (2015). Improving the design of industrial microwave processing systems through prediction of the dielectric properties of complex multi-layered materials. Journal of Materials Science, 50(23), 7591-7599. https://doi.org/10.1007/s10853-015-9319-z

Rigorous design of industrial microwave processing systems requires in-depth knowledge of the dielectric properties of the materials to be processed. These values are not easy to measure, particularly when a material is multi-layered containing multi... Read More about Improving the design of industrial microwave processing systems through prediction of the dielectric properties of complex multi-layered materials.

A concise review on microwave-assisted polycondensation reactions and curing of polycondensation polymers with focus on the effect of process conditions (2014)
Journal Article
Komorowska-Durka, M., Dimitrakis, G., Bogda?, D., Stankiewicz, A., & Stefanidis, G. (2014). A concise review on microwave-assisted polycondensation reactions and curing of polycondensation polymers with focus on the effect of process conditions. Chemical Engineering Journal, 264, https://doi.org/10.1016/j.cej.2014.11.087

During the past 15 years, increasing application of microwave heating to polycondensation reactions has been witnessed. Experiments have been carried out at laboratory scale using widely different experimental procedures. The use of microwaves has of... Read More about A concise review on microwave-assisted polycondensation reactions and curing of polycondensation polymers with focus on the effect of process conditions.

Enhanced ‘in situ’ catalysis via microwave selective heating: catalytic chain transfer polymerisation (2014)
Journal Article
Adlington, K., McSweeney, R., Dimitrakis, G., Kingman, S. W., Robinson, J. P., & Irvine, D. J. (2014). Enhanced ‘in situ’ catalysis via microwave selective heating: catalytic chain transfer polymerisation. RSC Advances, 4(31), 16172-16180. https://doi.org/10.1039/c4ra00907j

An extremely facile, single stage, ‘in-situ’, Catalytic Chain Transfer Polymerisation (CCTP) process has been identified, where the optimal polymerisation process was shown to depend upon a combination of catalyst characteristics (i.e. solubility, se... Read More about Enhanced ‘in situ’ catalysis via microwave selective heating: catalytic chain transfer polymerisation.