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Applications are invited to apply for a 4-year iCase funded PhD studentship in the Surface Engineering and Precision Centre at the University of Cranfield in collaboration with and sponsored by the National Physical Laboratory (NPL), the UK’s National Metrology Institute and Loxham Precision.
Overview
Positioning and measuring with sub-nanometre accuracy are fundamental in the development of modern semiconductor and quantum-based devices where device performance depends heavily on the nanoscale dimensions. To meet this challenge, the lattice parameter of silicon has been formally adopted as the basis of a length scale for nano-metrology. One method for implementing this is x-ray interferometry; a ruler or positioning system stage for nanometrology with subatomic accuracy.
The aim of the project is to design and manufacture efficiently x-ray interferometers suitable for a range of dimensional nanometrology applications including ultra-precision positioning and characterisation of nanoscale displacement sensors that will support manufacturing of micro-electronics and quantum devices.
The project
The design of the x-ray interferometer will be based around finite element modelling of ultra high accuracy flexures stages that can be machined from silicon with the model being used as basis for a digital twin. The manufacture of X-ray interferometers is very challenging requiring expertise in machining of brittle materials, high aspect ratio structures and minimisation of surface damage from the machining process. Optimisation of machining parameters, testing the materials and mechanical properties of the machined components along with modelling the behaviour of these components with varying geometries and properties, is key for an agile, efficient and fit-for purpose manufacturing. Other challenging aspects of research will include validation and verification of the interferometer in the sub-nanometre scale length metrology context.
Benefits
The technical knowledge gained which will provide a sound basis for a career in nanoscience, engineering or metrology. In addition, the student will benefit from additional training and support at the University of Cranfield, and from the Post Graduate Institute for Measurement Science at NPL and will have the opportunity to spend a minimum of three months working at NPL. The PostGraduate Institute for Measurement Science (PGI), based at NPL is a pioneering initiative to equip the UK with an exceptionally skilled workforce ready to tackle real life industrial challenges. The project provides access to state of the art machining facilities at Cranfield; some of which were used to produce some of the spectrometer mirrors for the and state of the art dimensional metrology at NPL.
About You
Applicants should have a first or upper second class UK honours degree or equivalent in a related discipline, such as mechanical engineering or physics. An appreciation of precision engineering would be an advantage.
Further details please contact:
Dr Claudiu Giusca (Cranfield University) c.giusca@cranfield.ac.uk
Dr Andrew Yacoot (NPL) andrew.yacoot@npl.co.uk
About Us
The National Physical Laboratory (NPL) is a world-leading centre of excellence that provides cutting-edge measurement science, engineering and technology to underpin prosperity and quality of life in the UK.
NPL and BEIS have strong commitments to diversity and equality of opportunity, and welcome applications from candidates irrespective of their background, gender, race, sexual orientation, religion, or age, providing they meet the required criteria. Applications from women, disabled and black, Asian and minority ethnic candidates in particular are encouraged. All disabled candidates (as defined by the Equality Act 2010) who satisfy the minimum criteria for the role will be guaranteed an interview under the Disability Confident Scheme.
At NPL, we believe our success is a result of the diversity and talent of our people. We strive to nurture and respect individuals to ensure everyone feels valued by treating everyone on the basis of their own individual merits and abilities regardless of their own or perceived identity, as part of our commitment to diversity & inclusion, we hold memberships and accreditations to ensure we’re creating an environment where all our colleagues feel supported and welcome, please see our Diversity & Inclusion page.
