30+ days ago - req27317

Mechanical engineering | Material Science Internship: Simplified mathematical model of friction

Mechanical engineering

Chemistry & materials science


In a nutshell


Veldhoven, Netherlands


No experience (Student)



Job Category

Mechanical engineering, Chemistry & materials science, Physics


Are you a master student Master’s in Mechanical Engineering, Material Science or Physics? Do you have knowledge in MATLAB ?

Background Information

This internship will be in a collaboration of two ASML groups: Mechatronics & Control (Research) and Wafer Tables and E-Clamps analysis (D&E). The goal will be to expand the capability of the friction models currently used for simulating interaction of the wafer with the wafer holder.
In lithography machines silicon wafers are placed and held on special wafer holders during exposure. Accuracy of the wafer shape directly affects the created pattern quality. Friction in the contact points during wafer load influences the final shape. A simple computationally friendly mathematical model of friction was extended within ASML for modelling this contact friction behavior in case of rapidly changing forces. However, this extended model so far handles friction behavior (including stick / slip) only in a single-dimension sliding movement, which only allows for 2D models and have some further limitations.

Your Assignment

The task would be to learn the current approach and to extend the model to 2D movements instead of merely 1D, as it is now. For this a fresh derivation of the model equations is needed since mere replication of 1D model in two directions leads to non-physical artifacts. Another development direction is taking into account non-linear contact properties (normal and lateral stiffness).Basic validation: the algorithm will have to be tested on simple single-point movement test models in MATLAB. If those are OK, simple test FEM model (COMSOL) may come next.

Your Profile

  • You are Master student in mechanical engineering, material science or physics;
  • You have a strong background in physics and mathematics;
  • Nice to have familiarity with tribology. It is not required to have experience with FEM;
  • Having knowledge with MATLAB is needed;
  • You have analytical skills and problem-solving mentality;
  • You are a team player with good communication skills and willing to learn;

This is a master graduation internship for 5 days a week with a duration of a minimum 6 months.

Please note that we can only consider students who are enrolled at a school for the entire duration of the internship.

Other information

What ASML offers
Your internship will be in one of the leading Dutch corporations, gaining valuable experience in a highly dynamic environment. You will receive a monthly internship allowance based on your educational level and number of days per week, plus a possible housing or travel allowance. More information on the allowances can be found on our website. In addition you will get expert, practical guidance and the chance to work in and experience a dynamic, innovative team environment.

ASML: Be part of progress
We make machines that make chips – the hearts of the devices that keep us informed, entertained and safe; that improve our quality of life and help to tackle the world’s toughest problems.

We build some of the most amazing machines that you will ever see, and the applications to run them. Never satisfied, we measure our performance in units that begin with pico or nano.

We believe we can always do better. We believe the winning idea can come from anyone. We love what we do – not because it’s easy, but because it’s hard. At ASML we are always pushing technology further.

Students: Getting ready for the real-world
Teamwork is key within ASML. Our R&D team is more than 5,500 people strong and worldwide we form one big team with over 25,000 employees. These colleagues have 123 different nationalities and work at our major sites on three continents.

Dozens of diverse, interdisciplinary teams work in parallel to meet a challenging development schedule. In this inspiring environment, your colleagues may be sitting next door, or they could be thousands of kilometers away in a different country, or even working for a different company.

An internship at ASML is your opportunity to get to know this world and get a feel for that excites you most. Use your education, gain real-life working experience and explore the world of high-tech – all at the same time.

How will you be part of progress?