Postdoctoral Researcher in Time-resolved X-ray Nanoimaging for Semiconductor Reliability — EPFL
- Location
- Villigen
- Contract
- full-time
- Posted
- 2 days ago
Role overview
Mission
The performance of X-ray microscopy has improved significantly over the last decade, enabling synchrotron-based X-ray imaging to resolve individual transistors in modern semiconductor devices.
As the industry moves to 3D transistor architectures and stacked, hybrid-bonded devices, it becomes important to study the initiation and propagation of defects due to thermal and electrical phenomena (e.g., dielectric breakdown or electromigration).
- Mission
- The performance of X-ray microscopy has improved significantly over the last decade, enabling synchrotron-based X-ray imaging to resolve individual transistors in modern semiconductor devices.
- Main duties and responsibilities
- You will develop an acquisition and reconstruction framework that exploits sparsity of the underlying dynamics and microchip sample structure to detect nanoscale sample changes from the smallest possible number of X-ray measurements.
Main responsibilities
- Main duties and responsibilities
- You will develop an acquisition and reconstruction framework that exploits sparsity of the underlying dynamics and microchip sample structure to detect nanoscale sample changes from the smallest possible number of X-ray measurements.
- Our pipeline reconstructs each projection from thousands of diffraction patterns, followed by volume reconstruction from projections measured at many rotation angles.
- These are two inverse problems, each with its own sampling requirements that can be significantly relaxed through sparsity. The questions we want to answer:
- How temporal and structural sparsity can be incorporated into the 3D dynamics reconstruction model?
- How sparse can a measurement be and still capture a high-resolution dynamic event?
- How do temporal resolution, spatial resolution, and radiation dose trade against one another, and what semiconductor dynamics can be observed?
- The primary focus will be on algorithm development, followed by their demonstration at synchrotron experiments.
- You will start working with an existing data acquisition and reconstruction pipeline which will be improved and extended for semiconductor imaging.
- You will also get a chance to perform experiments at the cSAXS beamline of the upgraded Swiss Light Source synchrotron, as well as other facilities around the world. Profile We are looking for a person with:
Application process
- The newly established Laboratory for Nanoscale X-ray Metrology is looking for a motivated postdoctoral researcher to develop time-resolved imaging methods and apply them to semiconductor reliability problems.
- We also value applications from people with the following experience (or similar):
- Coherent diffractive imaging, especially ptychography.
- Sparse sensing, optimization, or Bayesian experimental design.
- Machine learning for imaging.
- Synchrotron experiment experience.
- Semiconductor devices or metrology. We offer You will be employed b
Additional details
- These are two inverse problems, each with its own sampling requirements that can be significantly relaxed through sparsity. The questions we want to answer:
- You will also get a chance to perform experiments at the cSAXS beamline of the upgraded Swiss Light Source synchrotron, as well as other facilities around the world. We are looking for a person with:
- Semiconductor devices or metrology. You will be employed b
Notes and original content
- These are two inverse problems, each with its own sampling requirements that can be significantly relaxed through sparsity.
- The questions we want to answer:
- You will also get a chance to perform experiments at the cSAXS beamline of the upgraded Swiss Light Source synchrotron, as well as other facilities around the world.
- We are looking for a person with:
- Semiconductor devices or metrology.
- You will be employed b
Questions about this listing
What salary does EPFL offer for this role?
EPFL lists CHF 62'000 - 94'000 gross per year for this position in Villigen. This is the salary published in the original listing (or, when the employer omits a figure, a realistic estimate for the role and sector) — the calculator on this site converts it to your actual net take-home once cross-border tax and social contributions are applied.
Is this a full-time role, and what type of contract does EPFL offer?
This listing is a full-time position. The contract type shown here comes directly from the employer's original posting; always confirm exact hours, notice period and probation length with EPFL during the application process, since these details can vary by role even within the same contract category.
Do I need a cross-border work permit for a role in Aargau?
EU/EFTA residents living in the border zone of the country adjoining Canton Aargau can apply for a G permit; the Swiss employer files it with that canton's migration office after the contract is signed. Border-zone rules and processing times vary by neighbouring country and canton, so confirm the specifics with Aargau's cantonal migration office or with HR during the application.
How do I apply for this position at EPFL?
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