NEXUS is the UK EPSRC XPS User's service. X-ray photoelectron spectroscopy (XPS) is a technique for analysing what is at the surface of a device or part. The surface can often dominate the performance of a product in terms of abrasion, adhesion, appearance, lubrication, or failed electrical contact due to oxidation or contamination.
Surface analysis techniques like XPS can identify the source of the problem quickly, even when other indirect methods of looking at the surface fail or become expensive and time consuming. If you have a "brown stain" that is preventing the adhesion of two components, for example, then XPS may well tell you what it is and where it came from.
Newcastle University, in NEXUS, has some of the best surface analysis facilities in the UK, with four XPS instruments at NEXUS and associated techniques, each having their own unique capabilities.
These include three new and state-of-the-art instruments, all are calibrated, serviced, and are very reliable. We also have the staff to interpret and advise, and contacts with other laboratories in the region.