Article
Chemistry, Physical
N. G. Korobeishchikov, I. Nikolaev, V. V. Atuchin, I. P. Prosvirin, A. Tolstogouzov, V Pelenovich, D. J. Fu
Summary: The study shows that a combination of high- and low-energy treatment modes can provide an efficient etching rate comparable to that of a monoatomic ion beam, reducing surface roughness to the angstrom level. XPS measurements reveal the preferential sputtering of oxygen and boron, as well as an increase in the concentration of lithium cations in both modes. While chemical alterations in the treated materials cannot be fully prevented, the damages from a cluster bombardment are much less than that from a monoatomic ion beam.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
R. Wirecka, D. Lachowicz, K. Berent, M. M. Marzec, A. Bernasik
Summary: This work thoroughly investigates the influence of X-ray irradiation and two types of surface sputtering methods. Monoatomic sputtering reduces iron oxide to metallic iron in a short time, while argon cluster sputtering minimizes structural modifications. The Fe 2p spectra fitting procedure for nanoparticles is established based on XPS characterization of Fe3O4 single crystal. The combination of X-rays and cluster sputtering alters the morphology and solidifies the surface of samples. The Spot-by-Spot Cluster Procedure is proposed to characterize the layer-by-layer structure of nanoparticles without altering it. The structure of zinc, manganese, and zinc-manganese ferrite nanoparticles is determined using this procedure. Depending on the dopant, its incorporation and the state of iron are changed.
SURFACES AND INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Hsun-Yun Chang, Wei-Chun Lin, Po-Chih Chu, Yi-Kai Wang, Mauo Sogo, Shin-ichi Iida, Chien-Jung Peng, Takuya Miyayama
Summary: The selection of ion-beam species and parameters for depth profiling is crucial for obtaining accurate depth information without causing sputter damage. While monoatomic ion-beam sources are commonly used for metals and inorganics, they can cause damage to highly oxidized metal oxides and organics. Cluster ion beams have gained popularity for soft materials due to their low damage to organics, but they have low sputter yields for metals and inorganic materials. This study explores gas cluster ion beams (GCIBs) with smaller cluster sizes, which have higher sputter yields for metals and inorganics while maintaining low damage to organics.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Matthias Lorenz, Junting Zhang, Alexander G. Shard, Jean-Luc Vorng, Paulina D. Rakowska, Ian S. Gilmore
Summary: A technique for directed transfer of molecules onto a sample surface inside a ToF-SIMS instrument using GCIB sputtering is introduced, with an example application in ME SIMS. This method does not require solvents, can be interlaced with SIMS depth profiling and 3D imaging cycles, and allows fine tuning of molecular deposition. Further study and optimization are needed to enhance signal ratios for drug molecules.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ivan Nikolaev, Pavel Geydt, Nikolay G. Korobeishchikov, Aleksandr Kapishnikov, Vladimir A. Volodin, Ivan A. Azarov, Vladimir Strunin, Evgeny Y. Gerasimov
Summary: This paper investigates the influence of surface modification on the characteristics and properties of AlN thin films on Si and glass-ceramics substrates. It is found that low-energy cluster ions have a high efficiency of surface smoothing. The optical properties and thickness distribution of the functional layer of AlN are also investigated, and the direction of crystallite texturing is observed using cross-sectional SEM.
Article
Biochemistry & Molecular Biology
Jun Wang, Chenxu Cai, Puze Geng, Feng Tan, Qing Yang, Ren Wang, Wenbiao Shen
Summary: The study provides the first evidence that argon gas can help plants cope with salinity toxicity by reestablishing ion and redox homeostasis.
Article
Chemistry, Physical
Anton Nazarov, Vladimir S. Chernysh, Andrey D. Zavilgelsky, Andrey A. Shemukhin, Alvaro Lopez-Cazalilla, Flyura Djurabekova, Kai Nordlund
Summary: The study investigated the impact of noble gas cluster species on the interaction between cluster and solid surfaces. It was found that lighter cluster front atoms experience more backscattering from surface atoms, leading to more intense multiple collisions between cluster atoms. This has implications for cluster penetration, energy exchange, and thermalization.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
S. A. Karpov, G. D. Tolstolutskaya, A. S. Kalchenko
Summary: Ion implantation technique and nuclear reaction analysis were used to study the trapping behavior of deuterium by radiation defects in 316 austenitic stainless steel. The study showed that gas-bubbles associated traps are the strongest deuterium traps.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Physical
Shin Muramoto, Daniel J. Graham
Summary: Secondary ion mass spectrometry using argon cluster primary ion beam allows molecular compositional depth profiling in organic thin films with minimal loss of chemical information. However, thicker organic films can lead to the rapid formation of micron-scale topography, affecting sputter yield linearity and depth resolution. To minimize 3D reconstruction distortions, a staggered sample rotation method was employed. By measuring depth resolution at the film-sphere interface, the effect of micron-scale topography and sample rotation on depth profile quality could be quantitatively assessed.
SURFACE AND INTERFACE ANALYSIS
(2021)
Article
Physics, Fluids & Plasmas
M. Klich, S. Wilczek, J. F. J. Janssen, R. P. Brinkmann, T. Mussenbrock, J. Trieschmann
Summary: An argon-xenon plasma is used as a model system for examining symmetric low-pressure radiofrequency discharges, with a focus on ion dynamics and energy distribution. The gas composition and driving voltage are found to significantly impact ion dynamics, with the mixing ratio acting as a control parameter for ion flux and impingement energy. A synergy effect between argon ionization and xenon ionization is also discovered and discussed.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
K. A. Dubrovin, A. E. Zarvin, V. V. Kalyada, A. S. Yaskin
Summary: This article investigates the influence of outflow initial parameters on the maximum cross-sectional radii of traditional jets and cluster wakes recently discovered by the authors. It verifies empirical dependencies proposed in previous studies and presents amendment models that consider the outflow characteristics of gases from supersonic nozzles under condensation conditions. Assumptions are made regarding the similarity between traditional jets and external cluster wakes, and limitations on cluster wake formation conditions are discussed.
Article
Optics
Arnab Sen, Abhisek Sinha, Sanket Sen, V Sharma, R. Gopal
Summary: This study used a reaction microscope to measure the momentum of ionized photoions and photoelectrons from the interaction of Ar atoms with laser pulses carrying orbital angular momentum (OAM). The results show no evidence of angular momentum transfer from light to electrons.
Article
Instruments & Instrumentation
Oleg B. Malyshev
Summary: Explored the relationship between ion bombardment energy of vacuum chamber walls and round beam parameters as well as beam chamber aperture.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Materials Science, Multidisciplinary
Vadim Sirotkin
Summary: The molecular dynamics simulation of accelerated argon cluster ions interacting with rutile surfaces was conducted. The study revealed a strong influence of the anisotropy of rutile's mechanical properties on the amount of sputtered material and the characteristics of impact craters and damaged layers. The simulation also considered the evolution of the surface relief and damaged layer caused by successive impacts of cluster ions, providing insights for analyzing experimental results obtained by treating titanium implants with a beam of argon cluster ions covered with a layer of rutile.
Article
Chemistry, Physical
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
Summary: The infrared spectrum of CO2-Ne complex in the region of the CO2 v3 fundamental vibration was studied, analyzing the vibrational fundamentals for both CO2-20Ne and CO2-22Ne in combination with available microwave data. Combination bands involving the intermolecular bending mode were observed, leading to the determination of the bending frequency.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Biochemical Research Methods
Kan Shen, Jay G. Tarolli, Nicholas Winograd
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2016)
Article
Chemistry, Analytical
Kan Shen, Dan Mao, Barbara J. Garrison, Andreas Wucher, Nicholas Winograd
ANALYTICAL CHEMISTRY
(2013)
Article
Chemistry, Physical
Selda Keskin, Alan Piwowar, Jonathan Hue, Kan Shen, Nicholas Winograd
SURFACE AND INTERFACE ANALYSIS
(2013)
Article
Chemistry, Physical
Alan M. Piwowar, Selda Keskin, Melissa Ortiz Delgado, Kan Shen, Jonathan J. Hue, Ingela Lanekoff, Andrew G. Ewing, Nicholas Winograd
SURFACE AND INTERFACE ANALYSIS
(2013)