Chemical Mechanical Polishing (CMP) is a process employed in MEMS manufacturing to planarize thin films. It is employed to reduce film thickness variation over a surface, to improve related processes, for example, wafer bonding. The dynamics of this system is governed by a set of variables, such as pressure, processing time, polishing slurry and type of silicon oxide. Pressure is applied unevenly throughout the wafer to obtain a uniform oxide surface.

Research plan:

The conducted research is divided into main subtopics:

1. Bibliography analysis and comprehension of the mechanical system;
2. Data gathering from experimental runs;
3. Elaboration of scripts in Python for data analysis;
4. Quantify direct influence of parameters for polishing process and thickness variation;
5. Model and solve equations of motion for the polished oxide surface;
6. Adapt and improve the Python codes with the obtained results.

The research is focused on the investigation of improvement of surface planarization, using concepts of dynamical systems, such as the least-action principle and entropy. Through the minimization of a chosen classical quantity, the values for parameters will be obtained such as to improve plane oxide distribution. Python Programming Language will be the main tool to develop coding and perform computations of cross- and auto-correlation functions in accordance to the experimental parameters.

We believe you are:

• Studying on a master program within the fields of semiconductor physics, material science, nanotechnology or similar
• Interested in applied physics and semiconductor processing
• Interested in Python programming
• Comfortable with mathematics and optimization problems
• Planning on doing your master thesis during spring 2025

About Silex

Silex is the world’s largest and most advanced pure-play MEMS foundry, headquartered in Stockholm. MEMS is present in nearly all modern technology, from personal gadgets to automotive electronics, medical monitoring and testing equipment, and thermal management systems. With a team of expert engineers, operators, technicians, support staff, specialists, and more, Silex brings the ideas and concepts of the industry’s leading MEMS innovators to life.

The Silex team brings together talented, curious, visionary, and determined individuals to break new ground in the industry alongside customers, developing the latest process technology within MEMS for global applications. As part of this team, you will work with some of the world’s largest technology giants and innovation leaders in industries such as medicine, life sciences, consumer electronics, telecommunications, automotive, and industrial sectors.

Additional Information

We have an ongoing application process and therefore encourage you to submit your application as soon as possible. To apply, please attach your CV, grade transcript and answer a few questions. Our process will include a background check and drug test, and as an employer, we perform random alcohol and drug tests for all employees.