High-Density Cascade Effects in Ion-Implanted Ag-Au Alloy

1983 ◽  
Vol 27 ◽  
Author(s):  
F. R. Vozzo
Keyword(s):  
Steady State ◽  
High Purity ◽  
Ion Beam ◽  
Aluminum Foil ◽  
Molecular Ions ◽  
Atomic Ions ◽  
Surface Configuration ◽  
Before And After ◽  
Cascade Effects ◽  
Backscattering Analysis

ABSTRACTHigh-purity, polycrystalline foils of 12 atomic percent gold Ag-Au alloy were implanted with polyatomic ions of arsenic and antimony at energies of 45 keV per atom. During fluence intervals before and after the steady state, sputtered material was collected on high-purity strips of aluminum foil. Subsequent backscattering analysis of the targets and collectors showed that significant redistribution and segregation occurred in the implanted layer, with relative depletion of silver consistently observed. The results suggested that preferentiality in sputtering is dependent on composition of an alloy and the ion beam used (even at low fluence), but there appears to be no major difference between the redistribution behavior of targets sputtered with atomic ions and equal-velocity molecular ions.A model is presented which predicts the sputtering behavior and surface configuration of a binary alloy implanted to steady state with a third species.

Nanoscale Focus Pinspot for High-Purity Quantum Emitters via Focused-Ion-Beam-Induced Luminescence Quenching

ACS Nano ◽  
2021 ◽  
Author(s):  
Minho Choi ◽  
Seongmoon Jun ◽  
Kie Young Woo ◽  
Hyun Gyu Song ◽  
Hwan-Seop Yeo ◽  
...  
Keyword(s):  
High Purity ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Luminescence Quenching ◽  
Quantum Emitters

Hydrogen Ion Beam Processing of Single Crystal Diamond Chips

1994 ◽  
Vol 354 ◽  
Author(s):  
Shuji Kiyohara ◽  
Iwao Miyamoto
Keyword(s):  
Surface Roughness ◽  
Single Crystal ◽  
Incidence Angle ◽  
Ion Beam ◽  
Etching Rate ◽  
Hydrogen Ion ◽  
Hydrogen Ions ◽  
Ion Beam Etching ◽  
Single Crystal Diamond ◽  
Before And After

AbstractIn order to apply ion beam etching with hydrogen ions to the ultra-precision processing of diamond tools, hydrogen ion beam etching characteristics of single crystal diamond chips with (100) face were investigated. The etching rate of diamond for 500 eV and 1000 eV hydrogen ions increases with the increase of the ion incidence angle, and eventually reaches a maximum at the ion incidence angle of approximately 50°, then may decrease with the increase of the ion incidence angle. The dependence of the etching rate on the ion incidence angle of hydrogen ions is fairly similar to that obtained with argon ions. Furthermore, the surface roughness of diamond chips before and after hydrogen ion beam etching was evaluated using an atomic force microscope. Consequently, the surface roughness after hydrogen ion beam etching decreases with the increase of the ion incidence angle within range of the ion incidence angle of 60°.

scholarly journals Surface segregation of transition elements in high-purity aluminum foil

2005 ◽  
Vol 55 (3) ◽  
pp. 142-146
Author(s):  
Harushige TSUBAKINO ◽  
Yuichiro YAMAMOTO ◽  
Atsushi YAMAMOTO ◽  
Michitaka TERASAWA ◽  
Tohru MITAMURA ◽  
...  
Keyword(s):  
High Purity ◽  
Surface Segregation ◽  
Aluminum Foil ◽  
Transition Elements ◽  
High Purity Aluminum

Analysis of nitride films on silicon substrates by ion beam methods

1995 ◽  
Vol 10 (12) ◽  
pp. 3124-3128 ◽  
Author(s):  
Z.S. Zheng ◽  
J.R. Liu ◽  
X.T. Cui ◽  
W.K. Chu ◽  
S.P. Rangarajan ◽  
...  
Keyword(s):  
Thin Films ◽  
Ion Beam ◽  
Light Element ◽  
Aluminum Foil ◽  
Resonance Scattering ◽  
Particle Beam ◽  
Silicon Substrates ◽  
Resonance Energies ◽  
Contamination Levels ◽  
Foil Substrate

The simultaneous determination of light element contamination levels and accurate nitrogen-to-metal ratios in nitride thin films deposited on silicon substrates is demonstrated by using α-particle beam energies in the range 3–4 MeV. In this energy range, significant light element sensitivity enhancements are observed, while the heavy elements show classical Rutherford behavior. The use of resonance scattering at different resonance energies is shown to be the method of choice for analyzing BN films on silicon. Also, a technique is suggested for analyzing very thin films in which an aluminum foil substrate and buffer layer are used to enhance sensitivities.

Oxidation of Alloy-X in Subcritical, Transition, and Supercritical Water

CORROSION ◽  
10.5006/3881 ◽  
2021 ◽  
Author(s):  
Zachary Karmiol ◽  
Dev Chidambaram
Keyword(s):  
Supercritical Water ◽  
Photoelectron Spectroscopy ◽  
Focused Ion Beam ◽  
Elevated Temperatures ◽  
Subcritical Water ◽  
Ion Beam ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nickel Based Superalloy ◽  
Before And After

This work investigates the oxidation of a nickel based superalloy, namely Alloy X, in water at elevated temperatures: subcritical water at 261°C and 27 MPa, the transition between subcritical and supercritical water at 374°C and 27 MPa, and supercritical water at 380°C and 27 MPa for 100 hours. The morphology of the sample surfaces were studied using scanning electron microscopy coupled with focused ion beam milling, and the surface chemistry was investigated using X-ray diffraction, Raman spectroscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy before and after exposure studies. Surfaces of all samples were identified to comprise of a ferrite spinel containing aluminum.

ALLOYING THE SURFACE OF STEEL 30KHGSN2A TO INCREASE ITS TRIBOLOGICAL CHARACTERISTICS

2020 ◽  
Vol 4 (2) ◽  
pp. 55-60
Author(s):  
L.I. KUKSENOVA ◽  
D.A. KOZLOV
Keyword(s):  
Wear Resistance ◽  
Steady State ◽  
Alloy Steel ◽  
Dry Friction ◽  
Irradiation Dose ◽  
Copper Ions ◽  
Ion Beam ◽  
Contact Deformation ◽  
Range Effect ◽  
Ion Beam Treatment

The results of evaluating the wear of samples of the model of the same name pair of friction from alloy steel 30KhGSN2A after ion beam treatment and dry friction under conditions of heavy contact are presented. It was shown that in the steady state friction, the wear resistance of steel as a result of implantation of copper ions at an irradiation dose of 1017 ion / cm2 and 5.1017 ion / cm2 increases by 2 and 1.5 times, respectively. The mechanism of the «long-range effect» in ion-doped structural materials under conditions of contact deformation is discussed.

Paper-based Triboelectric Nanogenerator and Activities of Salt Ions

2021 ◽  
Author(s):  
Shatrudhan Palsaniya ◽  
Komal Nehra ◽  
Ashok Kumar Dasmahapatra
Keyword(s):  
Steady State ◽  
Kinetic Energy ◽  
Charge Transport ◽  
Surface Charge ◽  
Aluminum Foil ◽  
Electrostatic Charge ◽  
Charge Carriers ◽  
Triboelectric Nanogenerator ◽  
Steady State Condition ◽  
Salt Ions

Abstract This work presents a triboelectric nanogenerator (TENG) fabrication using polytetrafluoroethylene, aluminum foil, and cellulose paper. Mechanical interactions lead to atomic defects that stimuli the delocalized electrostatic charge carriers and kinetic energy. The addition of ionic salt’s microdroplets improved the TENG’s performance. Eventually, surface charge activities have escalated the electrical signals. Further, studied spontaneously increased charge transport performance at the steady-state condition in the presence of NaCl ionic droplets. We considered that these ionic activities actively participated in detecting salt ions.

The combined use of a singly charged ion beam and undulator radiation for photoelectron spectrometry studies on atomic ions

1992 ◽  
Vol 63 (1) ◽  
pp. 1389-1392 ◽  
Author(s):  
J. M. Bizau ◽  
D. Cubaynes ◽  
M. Richter ◽  
F. Wuilleumier ◽  
J. Obert ◽  
...  
Keyword(s):  
Ion Beam ◽  
Undulator Radiation ◽  
Atomic Ions ◽  
Combined Use ◽  
Singly Charged

The Study of Dynamic Response to Acute Hemorrhage by Pulse Spectrum Analysis

2006 ◽  
Vol 34 (03) ◽  
pp. 449-460 ◽  
Author(s):  
Yu Hsin Chang ◽  
Chia I Tsai ◽  
Jaung Geng Lin ◽  
Yue Der Lin ◽  
Tsai Chung Li ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Steady State ◽  
Arterial Blood Pressure ◽  
Mean Arterial Blood Pressure ◽  
Spectrum Analysis ◽  
Pulse Spectrum ◽  
Acute Hemorrhage ◽  
Arterial Blood ◽  
Percentage Difference ◽  
Before And After

Traditional Chinese Medicine (TCM) holds that Blood and Qi are fundamental substances in the human body for sustaining normal vital activity. The theory of Qi, Blood and Zang-Fu contribute the most important theoretical basis of human physiology in TCM. An animal model using conscious rats was employed in this study to further comprehend how organisms survive during acute hemorrhage by maintaining the functionalities of Qi and Blood through dynamically regulating visceral physiological conditions. Pulse waves of arterial blood pressure before and after the hemorrhage were taken in parallel to pulse spectrum analysis. Percentage differences of mean arterial blood pressure and harmonics were recorded in subsequent 5-minute intervals following the hemorrhage. Data were analyzed using a one-way analysis of variance (ANOVA) with Duncan's test for pairwise comparisons. Results showed that, within 30 minutes following the onset of acute hemorrhage,the reduction of mean arterial blood pressure was improved from 62% to 20%. Throughout the process, changes to the pulse spectrum appeared to result in a new balance over time. The percentage differences of the second and third harmonics, which were related to kidney and spleen, both increased significantly than baseline and towards another steady state. Apart from the steady state resulting from the previous stage, the percentage difference of the 4th harmonic decreased significantly to another steady state. The observed change could be attributed to the induction of functional Qi, and is a result of Qi-Blood balancing activity that organisms hold to survive against acute bleeding.

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