Job offers
At this page microscopy related job opportunities are presented. The information shown remains the responsibility of the original author. So far these announcements are free of charge for jobs at Universities and other non-profit institutes throughout Europe as well as for ECMA members (the corporate members of EMS). EMS members working outside Europe can also for free post job positions at their respective research group. Others pay Euro 200 per announcement. Companies eligible for ECMA membership are requested to join the silver ECMA membership category (Euro 250).
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Imperial College London
London, United Kingdom
Postdoctoral Research Associate in biochemical neuroscience and dementia
Announcement date: 10 July 2024 - Deadline for application: 02 August 2024Description
Investigating the relationship between the build up and clearance of pathological protein aggregates associated with Parkinson’s disease, using single-molecule microscopy to study iPSC-neurons.
More information
Contact
- Identity
- Dr Yu Ye – yu.ye1@imperial.ac.uk
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Imperial College London
London, United Kingdom
Postdoctoral Research Associate in Cellular Neuroscience and iPSCs
Announcement date: 10 July 2024 - Deadline for application: 16 August 2924Description
Requirements
Characterising pathological protein aggregate associated with Alzheimer’s disease and their clearance from iPSC-neurons by the ubiquitin-proteasome system.
More information
Contact
- Identity
- Dr Yu Ye – yu.ye1@imperial.ac.uk
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DTU Physics
Lyngby, Denmark
PhD Scholarship in Structural Characterization of Functionalized Quantum Dots – DTU Nanolab
Announcement date: 09 July 2024 - Deadline for application: 31 August 2024Description
The National Centre for Nanofabrication and Characterization (DTU Nanolab) at the Technical University of Denmark (DTU) is seeking a PhD student to visualize “Quantum Dot / Ligand” interfaces to unravel the complex structure and dynamics of QD-(macro)molecule interactions.
In the research group “Nano-Micro-Macro. Structure in Materials”, headed by Prof. Joerg Jinschek, you will break new ground at the absolute forefront of what is possible. You will advance (cryo) electron microscopy imaging & spectroscopy techniques representing a critical avenue for refining our understanding of quantum dot (QD) functionalization, particularly in the area of surface ligand engineering tailored to imaging complex molecular systems, but also in (self)assembly of coupled QD arrays for intriguing electronic and photonic properties.FULL DESCRIPTION WITH THE LINK
Requirements
In the research group “Nano-Micro-Macro. Structure in Materials”, we strive at developing and applying concepts for characterizing structures, mainly focusing on state-of-the-art EM. The interdisciplinary efforts aim at developing fundamental understandings of process-structure-property relationships. The focus here is on bioengineering studies.
Tasks (in close collaboration with the group at TU/e):- Develop an understanding of materials engineering for the design of specific QD-ligand heterostructures.
- Develop reliable, robust procedures for the characterization such inorganic/organic structures– at the single atom/molecule length scale.
- Determine structural phenomena at QD-ligand interfaces (and their statistical relevance).
- Develop a concept to understand structure – (optical) property relationships.
- Provide data sets to automate materials design processes.
Characteristics:
- You are interested in working in interdisciplinary and international research collaboration.
- You are a team player and have a strong talent for interacting in teams and integrating information.
- You have a fundamental interest in functionalized quantum dots for soft and biomaterials imaging.
- You have a fundamental interest in challenging materials characterization using scanning / transmission electron microscopes.
- You want to learn how artificial intelligence concepts revolutionize materials science and engineering.
You must have a two-year master's degree (120 ECTS points) or a similar degree with an academic level equivalent to a two-year master's degree.
More information
Contact
- Identity
- Professor Joerg Jinschek, email: jojin@dtu.dk
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UNIVERSITY OF BIRMINGHAM
Birmingham, United Kingdom
Technical Specialist (Transmission Electron Microscopy) - School of Metallurgy and Materials - 104123 - Grade 7
Announcement date: 09 July 2024 - Deadline for application: 31 July 2024Description
The post holder will be a technical specialist for Transmission Electron Microscopy (TEM), providing technical expertise, support, and guidance to users in the CEM to strengthen the service we offer. The post holder will support the CEM and its users through operation and maintenance of TEMs, sample preparation activities, and training and supervision of users.
As a member of the technical team, the post holder will assist in maintaining the CEM and its lab spaces. This includes equipment such as a Scanning Electron Microscopes, Transmission Electron Microscopes, micro CT scanners, ultramicrotomes, coating machines, and other sample preparation equipment.
The post holder will work closely with postdoctoral research staff and PhD students from across the University of Birmingham, external Universities, and other industrial/commercial contacts. The post holder will provide training in the use of equipment and safety procedures to UoB staff, students, and external companies.
FULL DESCRIPTION WITH THE LINKRequirements
- Support the Centre of Electron Microscopy and its users through specialist operation and maintenance of transmission electron microscopes and the related sample preparation.
- Line-manage other members of technical staff.
- Assist in managing the laboratory areas including maintaining high standards of Health & Safety.
- Use in depth knowledge of methods and procedures to advise and lead on experimental techniques being used by researchers and/or students. This will involve communicating with colleagues and students at a range of experience levels.
- It will be essential to contribute to effective knowledge transfer in the context of user training and teaching new users, and in presenting at technical and scientific meetings and workshops for knowledge and skill exchange.
- Diagnose and resolve problems and suggest solutions regarding techniques and experiments. Problem solving, including diagnosis of mechanical, electronic or vacuum problems in the microscopes. Liaison with service engineers to ensure as little down time with equipment as possible, using own judgment on when to call a service engineer.
- Carry out work with a large amount of autonomy.
- Responsible for proactively managing and maintaining the equipment of the CEM. Calibrate and maintain equipment as required. This includes but is not limited to measuring ionizing radiation, maintaining vacuum systems, filter changes, calibrating instruments.
- Organise disposal of waste materials though the correct processes.
- Be able to diagnose and resolve problems, proactively identifying solutions regarding techniques and experiments and acting as an escalation point.
- Develop cutting edge services and systems to anticipate and meet customer needs and improve the available facilities.
- Maintain accurate records of all techniques and experimental procedures carried out, and for any other research activities involved.
- Contribute to internal and external audit procedures and to regulatory inspections.
FULL REQUIREMENTS WITH THE LINK
More information
Contact
- Identity
- Dr Ludwig Schneider: l.schneider.1@bham.ac.uk
Prof Yu-Lung Chiu: y.chiu@bham.ac.uk
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University of York
York, United Kingdom
PhD position - Enabling atomic resolution imaging of novel energy materials
Announcement date: 02 July 2024 - Deadline for application: 29 July 2024Description
Effective use of solar energy is critical to the UKs net-zero strategy, and great advances have been made recently in solar-cell materials. These materials, however, still perform well below their ideal efficiency due to atomic-scale defects which form during manufacture and degrade further with age. To overcome the impact of these defects we need to be able to image these materials reliably, at atomic resolution.
The scanning transmission electron microscope is an ideal tool for this – instruments such as those in the York Nanocentre, and the cryoEM facility within YSBL (York Structural Biology Laboratory) can routinely produce high-resolution, clear images of some types of material. Solar-cell materials however are too soft for atomic resolution imaging using conventional approaches as they are easily damaged by the electron beam. This challenge necessitates the development of new imaging approaches [1].
In this project the successful applicant will use the world-class electron microscopes in York alongside modelling approaches (such as in [2,3]) to develop reliable techniques for atomic-resolution imaging of these important energy materials. You will develop expertise in both experimental materials characterisation (high-end microscope operation and a range of sample preparation techniques) and computational data science (in Python, Matlab or similar), while working as part of an interdisciplinary team . You will have the opportunity to present at international conferences and to undertake experiments at national and international facilities.
Requirements
At least a class 2:1 Master’s degree in Physics or a related science, engineering or technology subject.
More information
Contact
- Identity
- Dr Laura Clark
laura.a.clark@york.ac.uk
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The University Medical Center Göttingen (UMG)
Göttingen, Germany
Scientist/Engineer (f/m/d) in Electron Microscopy (Staff Researcher)
Announcement date: 01 July 2024 - Deadline for application: 19 July 2024Description
Job reference: 37077
The Correlative Electron Microscopy Laboratory at the Institute of Neuropathology is dedicated to the development and application of new diagnostic microscopic techniques for the pathological examination of tissue samples. We follow a correlative approach from X-ray microscopy to SBF-SEM, FIB-SEM and tomographic (S)TEM for the investigation of diseased regions at the nanoscale.
We are seeking a scientist or engineer with specialized technical expertise in electron microscopy to identify and formulate new workflows and innovative concepts, as well as to take responsibility for the operation of the systems.
Requirements
- PhD degree in life or material sciences, engineering, or a related field
- at least wo years of hands-on experience in operating electron microscopes, including troubleshooting
- affinity with high-end equipment
- ideally, knowledge of IT, electronics, and/or vacuum techniques.
- proficiency in German and English
- excellent communication and interpersonal skills, ability to work in a team
More information
Contact
- Identity
- Dr. Gertrude Bunt
E-mail: gbunt@gwdg.de
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Insitu Catala de Nanociencia i Nanotecnologia - Research area or group: Advanced Electron Nanoscopy
Barcelona, Spain
POSTDOC - QUANTUM NANOMATERIALS AND HYBRID SEMICONDUCTOR/SUPERCONDUCTOR HETEROSTRUCTURES AT THE ATOMIC-SCALE - ICN2 & ALBA SYNCHROTRON
Announcement date: 27 June 2024 - Deadline for application: 01 September 2024Description
The Catalan Institute of Nanoscience and Nanotechnology (ICN2) is currently seeking a highly motivated PostDoc to join Prof. Jordi Arbiol's group. The focus of this position will be on atomic scale scanning transmission electron microscopy (STEM) characterization of quantum materials and devices. The PostDoc will engage in focused ion beam (FIB) sample preparation and utilize related analytical techniques such as energy-dispersive x-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS). The research will involve advanced STEM-related (e.g.: 4D STEM) atomic scale characterization of state-of-the-art semiconductor and hybrid (semiconductor/superconductor) devices for quantum applications (Qubits for quantum computing). In-situ cooling experiments and data analysis automation will be integral to the project, with a particular emphasis on low-loss EELS and valence EELS (VEELS) bandgap mapping in hybrid semi-super heterostructures.
Join our dynamic group, leader in the atomic-scale characterization of semiconductor devices. As part of our team, you'll have the opportunity to collaborate with a large network of quantum physics researchers worldwide and participate in the e-DREAM European microscopy network, which provides access to cutting-edge EM equipment and will allow you to participate in some of the largest EU projects related to STEM methodological development.
Requirements
- Education:
Ph.D. degree on physical sciences, materials science, nanotechnology or related fields.
- Knowledge and Professional Experience:
Hands-on experience in the following areas: Operation of transmission electron microscopes, including detailed knowledge of main physical principles, concepts, and applications of electron microscopy.
Advanced sample preparation (FIB) and data analysis skills.
Preferred knowledge:
Experience with operation of advanced transmission/scanning electron microscopes using aberration-corrected optics and direct electron detection system.
Experience with 4D-STEM analysis.
Experience with data collection and interpretation of electron energy loss spectroscopy (EELS).
Experience with cooling/heating in-situ S/TEM analysis, temperature holders.
e-tomography
Basic knowledge on semiconductor and superconductor Physics
Experience on Semiconductor heterostructures analyses, 2D structures, nanowires.
- Personal Competences:
Excellent interpersonal skills in order to interact with co-workers promptly and professionally, management and support the wide user community of students, post-doctoral researchers and faculty, promoting the growth of the EM core.
Excellent oral and written communication skills. Previous experience in delivering oral technical presentations to scientific audiences.
All applications must be made via the ICN2 website and include the following:
- A cover letter.
- A full CV including contact details.
- 2 Reference letters or referee contacts.
Applications will be continuously reviewed. Shortlisted candidates will be invited for interview.
More information
Contact
- hr@icn2.cat
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DTU Physics
Kgs. Lyngby, Denmark
Postdoc in Microscopy of Enzyme Immobilization
Announcement date: 25 June 2024 - Deadline for application: 05 July 2024Description
Job reference: 3674
PostDoc position is available for experimental research on enzymes immobilized on polymeric and organic-inorganic hybrid matrices for catalysis of chemical reactions needed for transitioning to a sustainable and green society.
The candidate will work on visualizing the position, density, structure and dynamics of immobilized enzymes using a suite of state-of-the-art optical and electron microscopy techniques. The work is part of a highly interdisciplinary collaboration – Biocatalysts Interactions with Gases (BIG) - comprising novel characterization, analysis, testing, and modeling of gaseous substrates at immobilized enzymes, with international leading partners at North Carolina State University (NC State), Technical University of Denmark (DTU), and Oak Ridge National Laboratory (ORNL).Requirements
You will work quantitatively with enzyme interaction with organic-inorganic hybrid matrices using state-of-the-art optical fluorescence microscopy (widefield, confocal and super-resolution modalities) as well as high-resolution transmission electron microscopy. The work will include:
- developing pioneering methods for nanoscale imaging of enzymes immobilized at “soft matter” and inorganic surfaces to determine enzyme position, density and interaction with immobilization matrices.
- uncovering fundamental characteristics of matrices for efficient enzyme-catalyzed reactions with gaseous substrates.
- exploring factors influencing enzyme activity and longevity at immobilization matrices.
- using visualizations for understanding of enzyme structure-function aspects of catalysis.
You will be affiliated with the Center for Visualizing Catalytic Processes (VISION) at DTU Physics www.vision.dtu.dk and work closely with VISION’s faculty members, PhD students, postdocs and international leading collaborators all working at the technological edge of modern optical and electron microscopy. In close interplay with BIG’s complementary synthesis, characterization, functionality measurements and theoretical modelling, you will contribute to elucidating immobilized enzyme interfaces and their role in transformative chemistry.
As a formal qualification, you must hold a PhD degree (or equivalent).
We favor candidates with a degree in physics, chemistry or biology. The candidate should have documented experience with optical and electron microscopy and, preferably, have experience in biocatalysis and nanoscience. Experience in scientific programming, e.g. using Python, is important.More information
Contact
- Identity
- Professor Stig Helveg, stig@fysik.dtu.dk
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National Institute of Standards Technology
Gaithersburg, USA
Postdoctoral Research Associate in Electron Microscopy
Announcement date: 19 June 2024Description
NIST is actively seeking candidates for two postdoctoral research positions as part of projects related to the CHIPS for America Act. The first project seeks to develop robust, quantitative methods for measuring mechanical strain in real-world semiconductor devices. Geometric complexity and the importance of strain in state-of-the-art nanoelectronics continue to increase, and this project is focused on improving the accuracy of existing techniques (EBSD, TKD, 4-D STEM, Raman, µXRD, etc.) and supplying new reference materials to industry to ensure capabilities for future-generation devices.
The second project seeks to develop quantitative, atomic-resolution methods for the three-dimensional characterization of complex semiconductor devices via electron tomography. By coupling advance specimen preparation, cutting-edge electron microscopy instrumentation, and AI-driven data collection and reconstruction, we will deliver a robust suite of measurement tools to the semiconductor industry.
Both positions are term appointments with base periods of three years. Opportunities for extending this term are available.Requirements
Job Requirements:
- Ph.D. in Physics, Materials Science, or a related field with a concentration in electron microscopy methods
- Experience in the collection and processing of STEM data, especially either 4D-STEM or electron tomography data as appropriate to the selected project
- Computer programming for custom data processingMore information
Contact
- Identity
- Dr. Andrew Herzing : andrew.herzing@nist.gov
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CEA Grenoble
Grenoble, France
2-year (1+1) post-doctoral position available at CEA Grenoble
Announcement date: 18 June 2024 - Deadline for application: 30 July 2024Description
Cryo-electron tomography (CET) is a powerful technique for the 3D structural analysis of biological
samples in their near-native state. CET has seen remarkable advances in instrumentation in the last
decade but the classical weighted back-projection (WBP) remains by far the standard CET
reconstruction method. Due to radiation damage and the limited tilt range within the microscope, WBP
reconstructions suffer from low contrast and elongation artefacts, known as ‘missing wedge’ (MW)
artefacts. Recently, there has been a revival of interest in iterative approaches to improve the quality
and hence the interpretability of the CET data.
In this project, we propose to go beyond the state of the art in CET by exploring deep learning (DL)
methods for denoising and correction of distortions in the reconstructions. These approaches have the
potential to improve the resolution of the CET reconstructions and facilitate the segmentation and sub-
tomogram averaging tasks.
The post-doctoral fellow will conduct a comparative study of iterative algorithms used in life science, and
DL approaches optimized in this project for thin curved structures. For the DL approaches, the postdoc
will take advantage of the large number of CET datasets available in the public database EMPIAR for
training the DL models. The postdoc will then apply the developed tools to CET datasets collected at
IBS on sporulating Bacillus subtilis bacteria, as a simple two-cellular compartment model. The resolution
of the reconstructions will be assessed quantitatively by Fourier Shell Correlation (FSC) and Noise-
compensated Leave-One-Out (NLOO) methods, and qualitatively by applying the same (automated)
segmentation protocols to the obtained volumes.Requirements
Eligible qualifications for this position include:
- PhD in Physics/Materials Science/Structural Biology with a strong background in image analysis;
- Proficiency in scientific Python;
- Experience in deep learning frameworks such as Keras, Tensorflow or Pytorch;
- Excellent written and verbal communication skills in English.More information
Contact
- Identity
- Zineb Saghi (zineb.saghi@cea.fr)
Guy Schoehn (guy.schoehn@ibs.fr)
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University Medical Center Göttingen - Institute for Neuropathology
Göttingen, Germany
Scientist/Engineer (f/m/d) in Electron Microscopy (Staff Researcher)
Announcement date: 15 June 2024Description
The Correlative Electron Microscopy Laboratory at the Institute of Neuropathology is dedicated to the development and application of new diagnostic microscopic techniques for the pathological examination of tissue samples. We follow a correlative approach from X-ray microscopy to SBF-SEM, FIB-SEM and tomographic (S)TEM for the investigation of diseased regions at the nanoscale.
We are seeking a scientist or engineer with specialized technical expertise in electron microscopy to identify and formulate new workflows and innovative concepts, as well as to take responsibility for the operation of the systems.
Application deadline: 19.07.2024
Requirements
- PhD degree in life or material sciences, engineering, or a related field
- at least wo years of hands-on experience in operating electron microscopes, including troubleshooting
- affinity with high-end equipment
- ideally, knowledge of IT, electronics, and/or vacuum techniques.
- proficiency in German and English
- excellent communication and interpersonal skills, ability to work in a team
More information
Contact
- Identity
- Dr. Gertrude Bunt
- gbunt@gwdg.de
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CNRS
Nantes, France
PhD candidate for: Scanning transmission electron microscopy characterisation of high energy density solid-state batteries for on board quantum technologies
Announcement date: 13 June 2024 - Deadline for application: 27 June 2024Description
The successful PhD candidate will concentrate on the characterization of thin films down to the
nanometre level thanks to advanced electron microscopy and spectroscopy techniques. Three different
devices will be studied in detail and compared, especially on the quality/nature of the interfaces
existing/created within the microbattery. These analyses will be performed both on the pristine batteries
and on batteries after cyling (a few cycles and prolonged cycling). Owing to complexity of such analyses
and the previous expertize of the Meng’s group at University of Chicago, a first well-known
microbattery will be used to define and optimize the protocols at IMN’s electron microscopy facility.
Especially the usefulness of a cryogenic temperature will be explored to gain representative data. Then,
the chemistry of the positive electrode will be changed to a more challenging and possibly capacity
relevant nickel-manganese-cobalt oxide. Finally, the electrolyte part will also be replaced by a halide
based one, which has very recently been shown by the collaboration IMN-Chicago University to have
peculiar and innovative electrochemical behaviour.
To achieve all these high-level studies and gain a better understanding of these innovative devices at the
relevant nanometre level, the PhD candidate will have access to unique imaging and analytical electron
microscopy capabilities in the IMN (https://plassmat.cnrs-imn.fr/en/). Imaging and spectroscopy
analysis will be performed using scanning transmission electron microscopy (STEM) and electron
energy loss spectroscopy (EELS) thanks to the Nant’Themis (S)TEM (Thermo Fisher Scientific Themis
Z G3). This probe corrected microscope is equipped with specialized holders for operando
measurements, with low dose mode and highly sensitive detectors (iDPC, direct detection of electrons).
Most importantly, sample holders required for handling air and beam sensitive samples will be available.
Especially, a unique (so far in France) sample holder allowing for low temperature (cryogenic) and
vacuum transfer associated with double tilt capabilities will be extensively used.
Furthermore, samples as a form of thin films can best be analysed when prepared with a Focused Ion
Beam to prepared thin lamella appropriate for (S)TEM. The PhD candidate will thus have also to use
the Crossbeam 550L of IMN also equipped with transfer devices and cryo possibilities adapted for TEM
lamella preparation.More information
Contact
- Identity
- Prof. Philippe Moreau (philippe.moreau@cnrs-imn.fr) Dr. Joël Gaubicher (joel.Gaubicher@cnrs-imn.fr)
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DTU Physics
Lyngby, Denmark
PhD scholarships on “Live” Visualizations of Single Nanoparticle Catalysts at the Atomic-Scale - DTU Physics
Announcement date: 07 June 2024 - Deadline for application: 30 June 2024Description
Job reference: 3180
Could you envision “seeing” chemical reactions being catalyzed at the atomic-scale? Two or more scholarships are now open for experimental research in nanoparticle catalysis using advanced operando electron microscopy at the Center for Visualizing Catalytic Processes (VISION).
VISION is developing and applying a new unique platform for visualizing catalytic nanoparticles and reactions at the atomic-level by integrating cutting-edge electron microscopy, microfabricated nanoreactors, nanoparticle synthesis and computational modelling. This approach enables new, direct operando observations that are urgently needed to advance mechanistic insight into catalytic processes at the atomic-scale.
The interdisciplinary approach aims at relating the atomic-scale structure, dynamics and functions of isolated, single nanoparticles in both thermal catalysis and electrocatalysis as a radical new approach for developing new and more efficient catalysts needed to tackle the environmental challenges of our time.
VISION’s hosts a new one-of-a-kind electron microscope facility, located in DTU’s new "Climate Challenge Laboratory" building. The new laboratory will host the VISION center, the Surface Physics and Catalysis section, the CatTheory section and the newly established Pioneer Center, CAPeX, as a vibrant collaborative research environment with internationally leading scientists in the fields of catalysis and power-to-X.Requirements
Position 1: You will work quantitatively with the dynamic behaviour of single nanoparticles in thermal catalysis. The tasks can include:
- Visualization of single nanoparticles in thermal catalysis using time-resolved, atomic-resolution transmission electron microscopy techniques.
- Development of quantitative image analysis to extract dynamic information encoded in single and series of atomic-resolved images of single nanoparticles.
- Investigation of dynamic processes at the heterogeneous surface of single nanoparticles as catalytic reactions progress.
- Understanding of atomic mechanisms and kinetics to develop strategies for stabilizing uniquely active but metastable surface motifs of nanoparticles as catalysts for sustainable chemical processes.
Position 2: You will work quantitatively with atomic-resolution electron microscopy of nanoparticles under electrocatalytic reaction conditions. The tasks can include:
- Preparation of microfabricated nanoreactors to study electrochemical reactions catalyzed by single or few nanoparticles.
- Operando studies of single nanoparticles during electrocatalysis using high spatiotemporal-resolution transmission electron microscopy techniques.
- Development and application of new ultrasensitive and quantitative methods for investigating liquid-surface interactions on nanoparticles at the atomic-scale.
- Relating structural dynamics and dynamical functions in electrocatalysis at the atomic-scale.
- Advance the understanding of atomic mechanisms and rates in electrocatalytic processes to develop strategies for stabilizing nanoparticles as catalysts for sustainable electrochemical processes.
In both positions, you will collaborate closely with a group of PhD students, postdocs and international leading scientists, all working at the technological edge of modern electron microscopy for advancing catalysis science.
You must have a two-year master's degree (120 ECTS points) or a similar degree with an academic level equivalent to a two-year master's degree with excellent results.Your complete online application must be submitted no later than 30 June 2024 (23:59 Danish time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill out the online application form, and attach all your materials in English in one PDF file. The file must include:
- A letter motivating the application (cover letter)
- Curriculum vitae
- Grade transcripts and BSc/MSc diploma (in English) including official description of grading scale
More information
Contact
- Identity
- Associate Professor Christian D. Damsgaard, e-mail: ccda@dtu.dk, Professor Jakob Kibsgaard, email: jkib@fysik.dtu.dk, Professor Peter Vesborg, email: vesborg@fysik.dtu.dk, Professor Joerg Jinschek, email: jojin@dtu.dk and Professor Stig Helveg, email: stig@fysik.dtu.dk
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DTU Physics
Lyngby, Denmark
PostDoc positions on “Live” Visualizations of Single Nanoparticle Catalysts at the Atomic-Scale - DTU Physics
Announcement date: 07 June 2024 - Deadline for application: 30 June 2024Description
Job reference: 3178
Could you envision “seeing” chemical reactions being catalyzed at the atomic-scale? Two or more PostDoc positions are now open for experimental research in nanoparticle catalysis using advanced operando electron microscopy at the Center for Visualizing Catalytic Processes (VISION).
VISION is developing and applying a new unique platform for visualizing catalytic nanoparticles and reactions at the atomic-level by integrating cutting-edge electron microscopy, microfabricated nanoreactors, nanoparticle synthesis and computational modelling. This approach enables new, direct operando observations that are urgently needed to advance mechanistic insight into catalytic processes at the atomic-scale.
The interdisciplinary approach aims at relating the atomic-scale structure, dynamics and functions of isolated, single nanoparticles in both thermal catalysis and electrocatalysis as a radical new approach for developing new and more efficient catalysts needed to tackle the environmental challenges of our time.
VISION’s hosts a new one-of-a-kind electron microscope facility, located in DTU’s new "Climate Challenge Laboratory" building. The new laboratory will host the VISION center, the Surface Physics and Catalysis section, the CatTheory section and the Pioneer Center, CAPeX, as a vibrant collaborative research environment with internationally leading scientists in the fields of catalysis and power-to-X.Requirements
Position 1: You will work quantitatively with the atomic structure and functionality of single nanoparticles in thermal catalysis. The tasks can include:
- Preparation of microfabricated nanoreactors with single or few nanoparticles for catalysis of chemical reactions in gas phase.
- Operando studies of single nanoparticles using atomic-resolution transmission electron microscopy techniques.
- Development of new ultrasensitive and quantitative methods for investigations of gas-surface interactions on nanoparticles at the atomic-scale.
- Relating the three-dimensional atomic surface structure and catalytic functions of single nanoparticles.
- Exploring the structure-function relations to develop strategies for designing uniquely active catalyst nanoparticles for sustainable chemical processes.
Position 2: You will work quantitatively with the dynamic behaviour of single nanoparticles in thermal catalysis. The tasks can include:
- Visualization of single nanoparticles in thermal catalysis using time-resolved, atomic-resolution transmission electron microscopy techniques.
- Development of quantitative image analysis to extract dynamic information encoded in single and series of atomic-resolved images of single nanoparticles.
- Investigation of dynamic processes at the heterogeneous surface of single nanoparticles as catalytic reactions progress.
- Understanding of atomic mechanisms and kinetics to develop strategies for stabilizing uniquely active but metastable surface motifs of nanoparticles as catalysts for sustainable chemical processes.
In both positions, you will collaborate closely with a group of PhD students, postdocs and international leading scientists, all working at the technological edge of modern electron microscopy for advancing catalysis science.
More information
Contact
-
CEA-Leti
Grenoble, France
2-year post-doctoral position available at CEA-Leti and CEA-Irig
Announcement date: 07 June 2024 - Deadline for application: 20 July 2024Description
Electron tomography (ET) is an established technique in materials science, where
HAADF-STEM mode is commonly used for the 3D morphological studies, while 3D
elemental and chemical information can be obtained using STEM-EELS and STEM-
EDX modes. Compared to HAADF-STEM mode, STEM-EELS and STEM-EDX require
high electron doses and acquisition times, making spectroscopic ET only suitable for
the study of beam-resistant samples, with a resolution of a few nanometers.
In this project, we aim to (1) extend the applicability of spectroscopic ET to a wider
range of samples and (2) improve its resolution.
Recent advances in hardware enable considerable improvements in acquisition time
and spectrum quality. In particular, direct electron detectors (DeD) and EDX detectors
with large solid angles greatly reduce the constraints with respect to acquisition speed
and electron dose, without compromising spectral sensitivity and spatial resolution. At
the same time, deep learning (DL) approaches have recently been shown to greatly
improve 3D reconstruction quality and correct artefacts associated with high noise
level, limited tilt range (missing wedge) and large tilt increments. DL approaches are
based on either pre-trained deep neural networks, which requires high-quality training
datasets, or self-supervised training of the said deep neural networks. In this project,
the candidate will compare the performance of various models on simulated data and
apply them to the 3D chemical analysis of two selected samples: (1) sub-10nm
bimetallic nanoparticles (provided by PEPR Diadem NACRE project partners) and (2)
ultra-scaled (sub-18nm) phase-change memory devices (provided by CEA-Leti
partners).
A probe-corrected Cold-FEG NeoARM TEM (60kV-200kV) will be used for the
tomographic data acquisition. It is equipped with two large solid angle SSD detectors
(JEOL Centurio), a CEOS Energy-Filtering and Imaging Device (CEFID) and a
Timepix3 direct electron camera. The TEM is also equipped with dedicated
tomography holders for TEM grids and needle-shaped samples. Depending on the
candidate’s interests and expertise, data acquisition will be performed by
himself/herself or by the project PI.
The candidate will have access to in-house Python codes and open source libraries,
as well as to the computing resources needed to carry out the comparative study of
the selected DL models.
The candidate will also interact closely with other members of the DIADEM projects
(METSA-Setdia and NACRE), and will be expected to communicate results effectively
in the form of oral presentations in national/international conferences and articles in
peer-reviewed journalsMore information
Contact
Zineb Saghi (zineb.saghi@cea.fr),
Nicola Vigano (nicola.vigano@cea.fr) and
Pascale Bayle-Guillemaud (pascale.bayle-
guillemaud@cea.fr)