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Thor Balkhed X-ray photoelectron spectroscopy (XPS) is often used to determine the chemical composition of materials. It was developed in the 1960s and is accepted as a standard method in materials science. Researchers at Linköping University, Sweden, however, have shown that the method is often used erroneously. It is, of course, an ideal in research that the methods used are critically examined, but it seems that a couple of generations of researchers have failed to take seriously early signals that the calibration method was deficient. This was the case also for a long time in our own research group. Now, however, we hope that XPS will be used with greater care, says Grzegorz Greczynski, senior lecturer in the Department of Physics, Chemistry and Biology at Linköping University.

Lars hultmanThor balkhedGrzegorz greczynskiDepartment of physicsKai siegbahn at uppsala universityKai siegbahnUppsala universityNobel prizeதுறை ஆஃப் இயற்பியல்நோபல் ப்ரைஸ்