Near-Ambient Pressure x-ray Photoelectron Spectroscopy Characterization of Various Materials

Stand-alone near ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) instruments represent an exciting advance for XPS; they are expected to substantially broaden its applicability. NAP-XPS works at rather high pressures (greater than 2500 Pa), allowing samples that would be incompatible with traditional high vacuum environments to be analyzed, e.g., gases, and solids and liquids that outgas significantly, including aqueous solutions. Here, in addition to showing analyses of more traditional materials, e.g., polymers, pure gases and liquids, and inorganic particles, this collection illustrates the possibilities of NAP-XPS by presenting analyses of a human tooth, cheese, Coca-Cola, sesame seeds, and a kidney stone.

Dhruv Shah, Stephan Bahr, Paul Dietrich, Michael Meyer, Andreas Thißen and Matthew R. Linford, Surf. Sci. Spectra 26(2), https://doi.org/10.1116/1.5087893, (2019).