T. Hulikal Chakrapani MSc (Thejas)

I am originally from Bangalore in India. I arrived in Netherlands to pursue my Master studies (2015-2017) at the Technische Universiteit Eindhoven at the Turbulence and Vortex dynamics group. After my masters graduation I moved to the Universiteit Twente for my PhD on September 1st, 2017. 

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Inkjet technology is an important tool in our homes and offices, in the printing industry and in emerging medical and high-tech applications. The worldwide consumption of inkjet inks was estimated to increase from 69 to 111 million liters from 2007 to 2012. This emphasizes the importance of using environmentally friendly solvents (i.e. water) for inkjet inks. While aqueous inkjet printing performs superbly on expensive paper coated with microporous layers, the print quality on uncoated, recycled copier paper is generally less optimal. Moreover, ink colorants cause considerable difficulty in paper recycling during the de-inking process, which increases the use of energy, water and aggressive chemicals. Therefore, minimizing the ink quantity required is imperative. Hence, this project in close association with Océ and FOM aims to investigate the complex multiscale and multiphase ink-substrate (paper) interactions. To tackle this problem, a team consisting of one experimentally-oriented (TU Eindhoven) and two theoretically-oriented PhD students (one from TU Eindhoven and one from UTwente), has been installed by Océ/FOM.

I am primarily concerned with the analysis of the flow of complex fluids inside a disordered porous media whose typical length scales are around 100 nano-meters. I am using the dissipative particle dynamics (DPD) simulation technique to model the flow. We aim to answer questions related to how ink penetrates into paper, and, how and where the colorants of the ink are distributed in the paper. These questions constitute the larger objective of this research project.

Address

University of Twente

Horst Complex (building no. 20), room N260
De Horst 2
7522 LW Enschede
Netherlands

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