Phd Position Particle Free Contactless Wafer

7 maanden geleden

Delft, Nederland TU Delft Voltijd

PhD Position Particle Free Contactless Wafer Handling-
Job description

The fast and accurate handling, transportation, and positioning of thin, sensitive substrates, such as Si-wafers, solar cells, and flat panel display glass panels are all core operations in production and manufacturing systems in high-tech industry, and substrate handling systems can be found everywhere in this industry.

Every mechanical contact between system components that are in relative movement increases the risk of wear of these components and the release of wear particles in the system, and every mechanical contact between handling system and substrate increases the risk of contamination, damage, or even breakage of said substrate, all of which need to be avoided. And yet, in current substrate handling systems found in industry mechanical contact is prevalent, with the unavoidable resulting contamination of the substrates that are being handled.

In this research project we will develop new concepts for future handling systems for Si-wafers in close collaboration with our industrial partner, VDL-ETG, an important OEM supplier in the world-leading Dutch high-tech industry. These systems will handle Si-wafers without mechanical contact whenever possible, and when unavoidable, make sure that the mechanical contact is without damage or contamination. At TU Delft, a novel, air bearing based contactless handling concept is being developed in which a thin pressurized air film carries, moves and accurately positions substrates relative to the carrying system. First results show the potential to carry, transport and position thin substrates without any mechanical contact.

In this project you will study and develop this new concept to be used in an innovative, new, contactless end-effector for a wafer handling SCARA robot. Additional challenges are to add the thermal conditioning of the wafer and the pre-alignment of the wafer to the features of this end-effector. Key steps in this research are the understanding and optimization of the air flow in the thin lubricating film between system and substrate to generate the required viscous traction on the substrate and thus control its position, while at the same time controlling the viscous heat loss.

You will work on the numerical modelling of the contactless handling concept, and use the results to guide the design steps for the new end-effector. The constrained space that is available to pick and place wafers in the storage needs to be considered in this development. Essential in this research is also the experimental validation of the numerical results. So, besides this numerical modelling (based on Reynolds’ equation) the design and realisation of lab-scale validation tests are part of the activities by the PhD-student.

This project is part of a larger project, in which three PhD-students are working on different aspects of the design of a new wafer handling system. The other PhD-students are working on the development of new (meta-)materials that are save when they collide in mechanical contact (less particles generated), and new design methods that use compliant machine elements to eliminate sliding surfaces. The three PhD-students will be working closely together; however, each PhD-student is responsible for a clearly defined subset of the overall project.

**Requirements**:

- MSc university degree in mechanical or mechatronics engineering.
- Strong interest in theoretical and practical aspects of mechanical design, modelling and manufacturing.
- Team player with strong communication skills.

Conditions of employment

The TU Delft offers a customisable compensation package, discounts on health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged.

For international applicants, TU Delft has the Coming to Delft Service. This service provides information for new international employees to help you prepare the relocation and to settle in the Netherlands. The Coming to Delft Service offers a Dual Career Programme for partners and they organise events to expand your (social) network.

TU Delft (Delft University of Technology)

Delft University of Technology is built on strong foundations. As creators of the world-famous Dutch waterworks and pioneers in biotech, TU Delft is a top international university combining science, engineering and design. It delivers world class results in education, research and innovation to address challenges in the areas of energy, climate, mobility, health and digital society. For generations, our engineers have proven to be entrepreneurial problem-solvers, both in business and in a social context.

Challenge. Change. Impact

Faculty Mechanical Engineering

3mE is a dynamic and innovative faculty with high-tech lab facilities and international reach. It’s a large faculty but also versatile, so we can often make unique connections by combining different disciplines. This is reflected in 3mE’s o

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