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PhD position: Nano/Multi-scale simulations of surfactants near interfaces/surfaces

Job description

A 4-year PhD position at the University of Twente (UT) is available within an NWO project through the Fundamental Fluid Dynamics Challenges in Inkjet Printing-second phase (FIP-II) program. The position is at the Multi-Scale Mechanics group (MSM) of the department of Thermal and Fluid Engineering (TFE). The offered PhD position is part of a joint research project with Canon Production Printing (Venlo, The Netherlands) and the Physics of Fluid (POF) group at the University of Twente.

 Project description

Surfactants are amphiphilic molecules, consisting of a hydrophobic tail and a hydrophilic head group. This duality makes them surface-active and allows them to alter the interfacial properties of fluids. Surfactants play a critical role in optimizing printing processes. The adsorption of surfactants at the interface/surface controls the wetting and spreading behavior of ink droplets on paper. The transport and redistribution of surfactants within the ink droplet creates tangential Marangoni stresses and non-uniform capillary forces, which affect the flow of ink on and into porous paper. Yet, the details of the underlying physics and chemistry at different scales (time and length) controlling the behavior of surfactants at the interface/surface are still poorly understood.

In this project, multiscale numerical approaches will be used, including Molecular Dynamics (MD) and Dissipative Particle Dynamics (DPD), to explore the behavior of surfactants in the vicinity of surfaces and interfaces. We aim to understand the transport of surfactants from the bulk to an interface/surface, and their effect on the wetting behavior of the fluid. The simulations results will be compared against concurrent experiments at Canon Production Printing (Venlo, The Netherlands).

Your profile

We welcome applications from candidates with a MSc degree or equivalent in physics, material science, chemistry, fluid mechanics or related fields. Knowledge on surfactants, interfacial phenomena or emulsions is highly appreciated. Experience with numerical simulations (molecular dynamics, DPD or other small scale methods) and/or programming is advantageous. Proficiency in spoken and written English, with good interpersonal communication skills is a requirement.

Our offer

We offer you a very challenging position in an inspiring multidisciplinary environment. The university offers a dynamic ecosystem with enthusiastic colleagues in which internationalization is an important part of the strategic agenda.

  • We offer a four-year fulltime PhD position.
  • We provide a stimulating, modern research environment with world-class research facilities.
  • You will be part of a dedicated team with which you will collaborate.
  • A starting salary of € 2.395,- gross per month in the first year and increasing to € 3.061,- gross per month in the fourth year.
  • An annual holiday allowance of 8% of the gross annual salary, and an annual year-end bonus of 8.3%.A solid pension scheme.
  • Minimum of 29 leave days in case of full-time employment.
  • We provide excellent mentorship and a stimulating research environment to accelerate your further professional and personal growth.
  • The University of Twente is situated on a green and lively campus with lots of facilities for sports and other activities.

Your first responsibility is to carry out the research and publish your work in scientific journals and proceedings. You are also encouraged to acquire teaching experience. We support you to broaden your knowledge by joining international exchange programs, by participating in national and international conferences and workshops and by visiting industrial companies, research institutes, and universities worldwide.

Information and application

You are welcome to contact for any questions you might have: Dr. Ahmed Jarray, a.jarray@utwente.nl and/or Dr. Wouter K. den Otter, w.k.denotter@utwente.nl

Please upload your application, including the following documents, through the button below, :

  • A motivation letter, emphasizing your specific interest, qualifications and motivation to apply for this position.
  • A detailed CV including a short summary of your MSc research and contact information of at least two references that may be consulted.
  • MSc grade list.

The application deadline is August 15th, 2021.

About the organization

The Faculty of Engineering Technology (ET) engages in education and research Mechanical Engineering, Civil Engineering and Industrial Design Engineering with a view to enabling society and industry to innovate and create value using sound, efficient and sustainable technology. We are part of a ‘people-first' university of technology, taking our place as an internationally leading centre for smart production, processes and devices in five domains: Health Technology, Maintenance, Smart Regions, Smart Industry and Sustainable Resources. Our faculty is home to some 1,800 Bachelor's and Master's students, 400 employees and 150 PhD candidates and offers three degree programmes: Mechanical Engineering, Civil Engineering and Industrial Design Engineering. Our educational and research programme are closely connected with UT research institutes Mesa+ Institute, TechMed Centra and Digital Society Institute.

University of Twente (UT)

University of Twente (UT) has entered the new decade with an ambitious, new vision, mission and strategy. As ‘the ultimate people-first university of technology' we are rapidly expanding on our High Tech Human Touch philosophy and the unique role it affords us in society. Everything we do is aimed at maximum impact on people, society and connections through the sustainable utilisation of science and technology. We want to contribute to the development of a fair, digital and sustainable society through our open, inclusive and entrepreneurial attitude. This attitude permeates everything we do and is present in every one of UT's departments and faculties. Building on our rich legacy in merging technical and social sciences, we focus on five distinguishing research domains: Improving healthcare by personalised technologies; Creating intelligent manufacturing systems; Shaping our world with smart materials; Engineering our digital society; and Engineering for a resilient world.

As an employer, University of Twente offers jobs that matter. We equip you as a staff member to shape new opportunities both for yourself and for our society. With us, you will be part of a leading tech university that is changing our world for the better. We offer an open, inclusive and entrepreneurial climate, in which we encourage you to make healthy choices, for example, with our flexible, customisable conditions.

PhD position: Nano/Multi-scale simulations of surfactants near interfaces/surfaces
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