scholarly journals Factors influencing surface carbon contamination in ambient-pressure x-ray photoelectron spectroscopy experiments

2021 ◽  
Vol 39 (4) ◽  
pp. 043203
Author(s):  
Nicolo’ Comini ◽  
Thomas Huthwelker ◽  
J. Trey Diulus ◽  
Jürg Osterwalder ◽  
Zbynek Novotny
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Carbon Contamination ◽  
Surface Carbon ◽  
X Ray ◽  
Factors Influencing

scholarly journals In situ monitoring of the influence of water on DNA radiation damage by near-ambient pressure X-ray photoelectron spectroscopy

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Marc Benjamin Hahn ◽  
Paul M. Dietrich ◽  
Jörg Radnik
Keyword(s):  
Dna Damage ◽  
Radiation Damage ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
In Situ Monitoring ◽  
Strong Increase ◽  
Oh Radicals ◽  
Strand Breaks ◽  
X Ray

AbstractIonizing radiation damage to DNA plays a fundamental role in cancer therapy. X-ray photoelectron-spectroscopy (XPS) allows simultaneous irradiation and damage monitoring. Although water radiolysis is essential for radiation damage, all previous XPS studies were performed in vacuum. Here we present near-ambient-pressure XPS experiments to directly measure DNA damage under water atmosphere. They permit in-situ monitoring of the effects of radicals on fully hydrated double-stranded DNA. The results allow us to distinguish direct damage, by photons and secondary low-energy electrons (LEE), from damage by hydroxyl radicals or hydration induced modifications of damage pathways. The exposure of dry DNA to x-rays leads to strand-breaks at the sugar-phosphate backbone, while deoxyribose and nucleobases are less affected. In contrast, a strong increase of DNA damage is observed in water, where OH-radicals are produced. In consequence, base damage and base release become predominant, even though the number of strand-breaks increases further.

scholarly journals New ambient pressure X-ray photoelectron spectroscopy endstation at Taiwan light source

2019 ◽  
Author(s):  
Chia-Hsin Wang ◽  
Sun-Tang Chang ◽  
Sheng-Yuan Chen ◽  
Yaw-Wen Yang
Keyword(s):  
Light Source ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
X Ray

Ambient Pressure Hard X-ray Photoelectron Spectroscopy for Functional Material Systems as Fuel Cells under Working Conditions

2018 ◽  
Vol 51 (3) ◽  
pp. 719-727 ◽  
Author(s):  
Yasumasa Takagi ◽  
Tomoya Uruga ◽  
Mizuki Tada ◽  
Yasuhiro Iwasawa ◽  
Toshihiko Yokoyama
Keyword(s):  
Fuel Cells ◽  
Working Conditions ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Functional Material ◽  
X Ray ◽  
Material Systems

scholarly journals In situ investigation of degradation at organometal halide perovskite surfaces by X-ray photoelectron spectroscopy at realistic water vapour pressure

2017 ◽  
Vol 53 (37) ◽  
pp. 5231-5234 ◽  
Author(s):  
Jack Chun-Ren Ke ◽  
Alex S. Walton ◽  
David J. Lewis ◽  
Aleksander Tedstone ◽  
Paul O'Brien ◽  
...  
Keyword(s):  
Water Vapour ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Water Vapour Pressure ◽  
Lead Iodide ◽  
X Ray ◽  
In Situ Investigation ◽  
Organometal Halide Perovskite ◽  
Methylammonium Lead Iodide

Near-ambient-pressure X-ray photoelectron spectroscopy enables the study of the reaction of in situ-prepared methylammonium lead iodide (MAPI) perovskite at realistic water vapour pressures for the first time.

scholarly journals An in situ near-ambient pressure X-ray Photoelectron Spectroscopy study of Mn polarised anodically in a cell with solid oxide electrolyte

2015 ◽  
Vol 174 ◽  
pp. 532-541 ◽  
Author(s):  
Benedetto Bozzini ◽  
Matteo Amati ◽  
Patrizia Bocchetta ◽  
Simone Dal Zilio ◽  
Axel Knop-Gericke ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Solid Oxide ◽  
Spectroscopy Study ◽  
Solid Oxide Electrolyte ◽  
X Ray ◽  
A Cell ◽  
Oxide Electrolyte

Solid-liquid interfaces studied with synchrotron-based ambient pressure X-ray photoelectron spectroscopy

2021 ◽  
Author(s):  
David Starr ◽  
Marco Favaro ◽  
Pip Clark ◽  
Rossella Yivlialin ◽  
Maryline Ralaiarisoa ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Liquid Interfaces ◽  
X Ray ◽  
Solid Liquid
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