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Overview

We are looking for a postdoctoral research associate, to work on a project titled “Understanding the Role of Self-Poisoning in Polymer Crystallisation” funded by Leverhulme Trust.

Recent experimental advances have shown that “self-poisoning”, where the growth of polymer crystals is slowed down, not by impurities but by polymer molecules themselves having the wrong conformations or crystallising in a competing crystal polymorph, is a much broader phenomenon.

On the theoretical side of the project, we aim to construct a new kinetic framework of polymer crystal growth that would reproduce quantitatively experimental data in different polymeric systems with different self-poisoning mechanisms, that classical theories were unable to handle. Monte Carlo and Molecular Dynamics simulations will also be carried out to reveal the competing kinetic pathways at the growth front.

The experimental part will use multiple experimental methods, including but not restricted to optical microscopy, optical tomography, high-resolution AFM, in-situ and post-mortem SAXS/WAXS, as well as DSC and FSC, to provide the supporting evidence for our new theory.

While the PDRA will focus on either the theory or experimental side of the project, it is critical that a keen understanding of the other part is maintained throughout the project.

Main duties and responsibilities

• Carry out literature reviews, and follow closely the most recent experimental/theoretical advances in the field.
• Communicate with your research supervisors and identify the scientific problems to tackle and make the research plan.
• Follow the research plan and carry out research work, either theory or experimental, and take all necessary training on e.g. health and safety, specific softwares or instruments.
• Report and discuss your research progress to your supervisors and other related group members on a regular basis, and make necessary changes to your research plan accordingly.
• Communicate with members of the group who work on the other theory/experimental part of the project, making sure the two parts run smoothly in parallel.
• Preparation of manuscripts for publication in reviewed journals, on the basis of the research results obtained.
• Communication of research results to others in the related field through attendance of conferences and workshops, in oral and poster presentations.
• Communication of research results to the general public through outreach activities.
• Supervising and guiding of other students in the group.
• Carry out other duties, commensurate with the grade and remit of the post.

Person Specification

Our diverse community of staff and students recognises the unique abilities, backgrounds, and beliefs of all. We foster a culture where everyone feels they belong and is respected. Even if your past experience doesn't match perfectly with this role's criteria, your contribution is valuable, and we encourage you to apply. Please ensure that you reference the application criteria in the application statement when you apply.

Further Information

Next steps in the recruitment process

It is anticipated that the selection process will take place at the beginning of February 2026. This will consist of a presentation by the candidate and an interview. We plan to let candidates know if they have progressed to the selection stage on the week commencing 2nd February 2026. If you need any support, equipment or adjustments to enable you to participate in any element of the recruitment process you can contact x.zeng@sheffield.ac.uk.

Our vision and strategic plan

We are the University of Sheffield. This is our vision: sheffield.ac.uk/vision (opens in new window).

What we offer

• A minimum of 41 days annual leave including bank holiday and closure days (pro rata) with the ability to purchase more.
• Flexible working opportunities, including hybrid working for some roles.
• Generous pension scheme.
• A wide range of discounts and rewards on shopping, eating out and travel.
• A variety of staff networks, providing opportunities for social interaction, peer support and personal development (for example, Race Equality, LGBT+, Women’s and Parent’s networks).
• Recognition Awards to reward staff who go above and beyond in their role.
• A commitment to your development access to learning and mentoring schemes; integrated with our Academic Career Pathways.
• A range of generous family-friendly policies
  • paid time off for parenting and caring emergencies
  • support for those going through the menopause
  • paid time off and support for fertility treatment
  • and more

More details can be found on our benefits page: sheffield.ac.uk/jobs/benefits (opens in a new window).

We are a Disability Confident Employer. If you have a disability and meet the essential criteria for this job you will be invited to take part in the next stage of the selection process.

We are a research university with a global reputation for excellence. Our ideas and expertise change the world for the better, making a real difference to society. We know that when people come together with different views, approaches and insights it can lead to richer, more creative and innovative teaching and research and the highest levels of student experience. Our University Vision (www.sheffield.ac.uk/vision) outlines our commitment to building a diverse community of staff and students that recognises and values the abilities, backgrounds, beliefs and ways of living for everyone.