GW4+ DLTP PhD Project: Tracking Microplastics in Plants Using Optical Resonances

This PhD project, hosted at the University of Bath and part of the GW4+ Doctoral Landscape Training Partnership (DLTP), aims to address the growing concern of microplastics in terrestrial ecosystems by investigating their interactions with plants. Micro- and nanoparticles from plastic pollution are increasingly detected in soil and plant tissues, but the mechanisms of their uptake, transport, and accumulation remain poorly understood. The research will focus on plastic microresonators—fluorescent microplastics whose unique optical signatures enable real-time tracking as they move through plant tissues. By integrating advanced imaging techniques with plant physiology, the project will explore how particle properties (such as size, surface charge, and polymer type) and plant traits affect the uptake and vascular transport of microplastics, as well as water absorption and overall plant health. These insights are particularly relevant in the context of climate change, where crops bred for efficient water uptake may inadvertently increase their exposure to microplastics. The successful candidate will have the opportunity to select plant models, refine imaging protocols, and develop tagging strategies. Depending on interests, the scope can be extended to include pollinators, broadening the environmental relevance of the work. Comprehensive training will be provided in advanced microscopy and plant physiology, leveraging the expertise of Dr Soraya Caixeiro (microresonator-based imaging) and Dr Heather Whitney (plant nanostructures and their impact on growth and interactions). The project is open to both Home and International students, with funding covering tuition fees, a competitive stipend (£20,780 per annum for 2025/26), and generous allowances for research expenses and travel. However, international applicants should note that funding does not cover visa, healthcare surcharge, or relocation costs, and only 30% of awards are available to international candidates. Applicants must hold, or be about to obtain, a UK Honours degree at 1st or 2.1 level, or an international equivalent, and non-UK applicants must meet the English language requirements before the deadline. The University of Bath values diversity and inclusion, encouraging applications from under-represented groups and providing support for students with disabilities. The application process requires a formal submission via the University of Bath’s online portal, with specific instructions for quoting the project title and supervisor, and uploading a GW4+ DLTP Personal Statement. The deadline for applications is January 8, 2026.