Marit Kjærvik recently finished her PhD Thesis

Marit Kjærvik (BAM, TU Berlin) recently finished her PhD Thesis with the title
„Applications of near-ambient pressure X-ray photoelectron spectroscopy in life science and materials research” (Click here to read)
Near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) is a powerful surface characterization technique that combines the strengths of conventional XPS performed in ultra-high vacuum (UHV), with the ability to analyze samples in the presence of gases and even liquids. In her thesis Marit aimed to explore new applications of NAP-XPS in life science and materials research, using the fully automated laboratory NAP-XPS instrument EnviroESCA from SPECS.
Three types of samples were investigated, suspended nanoparticles, bacteria, and the metal-organic framework HKUST-1. Marit developed and optimized the sample preparation, measurement conditions, and NAP-XPS methodology needed to perform all the experiments described in her thesis, especially for Escherichia coli and Pseudomonas Fluorescens bacterial films.
Marit also characterized the photoelectron attenuation in nitrogen, argon, and water vapor, which is very important to achieve quantitative NAP-XPS.
We would like to thank Dr. Marit Kjӕrvik (BAM, TU Berlin) and her supervisor Dr. Wolfgang E. S. Unger (BAM) for a very fruitful cooperation and a constant support over the last years.

List of Publications (Click text to read)

1. Detection of suspended nanoparticles with near-ambient pressure x-ray photoelectron spectroscopy
2. Surface characterisation of Escherichia coli under various conditions by near-ambient pressure XPS
3. Bovine serum albumin, aqueous solution, by near-ambient pressure XPS
4. Application of near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) in an in-situ analysis of the stability of the surface-supported metal-organic framework HKUST-1 in water, methanol and pyridine atmospheres
5. Comparative Study of NAP-XPS and Cryo-XPS for the Investigation of Surface Chemistry of the Bacterial Cell-Envelope