Search Results - "Schweikert, E. A."

Simple method for identifying interdependencies in service delivery in critical infrastructure networks by Schweikert, A. E., L’Her, G. F., Deinert, M. R.

“…Critical infrastructure failures from natural hazard events affect the economic and social well-being of communities. This is particularly true in lower income…”
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The Pegase project, a new solid surface probe: focused massive cluster ion beams by Della-Negra, S., Arianer, J., Depauw, J., Verkhoturov, S. V., Schweikert, E. A.

“…The objective of this project is the development of the SIMS associated to a new probe of the solid: massive clusters consisting of 100–1000 bismuth or gold…”
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Examination of Nanoparticles via Single Large Cluster Impacts by Rajagopalachary, S, Verkhoturov, S. V, Schweikert, E. A

“…This study deals with the determination of the relative abundance of the oxide layer in the near-surface volume of aluminum nanoparticles of 50–100 nm in…”
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Surface characterization of biological nanodomains using NP-ToF-SIMS by Fernandez-Lima, F. A., DeBord, J. D., Schweikert, E. A., Della-Negra, S., Kellersberger, K. A., Smotherman, M.

“…This paper describes the application of nanoparticle bombardment with time‐of‐flight secondary ion mass spectrometry (NP‐ToF‐SIMS) for the analysis of native…”
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Massive clusters: Secondary emission from qkeV to qMeV. New emission processes? New SIMS probe? by Della-Negra, S., Depauw, J., Guillermier, C., Schweikert, E. A.

“…We report on the secondary ion emission under massive cluster (from 100 to 1600 atoms) impacts from different organic samples. The study has been preformed at…”
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Characterization of individual nano-objects with nanoprojectile-SIMS by Liang, C.-K., Verkhoturov, S. V., Bisrat, Y., Dikler, S., DeBord, J. D., Fernandez-Lima, F. A., Schweikert, E. A., Della-Negra, S.

“…Secondary ion mass spectrometry (SIMS) applied in the event‐by‐event bombardment/detection mode is uniquely suited for the characterization of individual…”
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Simultaneous detection and localization of secondary ions and electrons from single large cluster impacts by Eller, M. J., Verkhoturov, S. V., Fernandez-Lima, F. A., DeBord, J. D., Schweikert, E. A., Della-Negra, S.

“…The use of large cluster primary ions (e.g. C60, Au400) in secondary ion mass spectrometry has become prevalent in recent years due to their enhanced emission…”
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On the surface mapping using individual cluster impacts by Fernandez-Lima, F.A., Eller, M.J., DeBord, J.D., Verkhoturov, S.V., Della-Negra, S., Schweikert, E.A.

“…This paper describes the advantages of using single impacts of large cluster projectiles (e.g., C 60 and Au 400) for surface mapping and characterization. The…”
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Examination of individual nanoparticles with cluster SIMS by Rajagopalachary, S., Verkhoturov, S. V., Schweikert, E. A.

“…We report on nanoprojectile–nanoparticle (NP) interaction when the two collision partners are in the same size range. The experiments involved C60+ accelerated…”
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Photon, Electron, and Secondary Ion Emission from Single C60 keV Impacts by Fernandez-Lima, F. A, Eller, M. J, Verkhoturov, S. V, Della-Negra, S, Schweikert, E. A

“…This Letter presents the first observation of coincidental emission of photons, electrons, and secondary ions from individual C60 keV impacts. An increase in…”
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New Methodology for Accurate Determination of Molecular Co-localization at the Nanoscale by Verkhoturov, D. S., Eller, M. J., Han, Y. D., Crulhas, B., Verkhoturov, S. V., Revzin, A., Schweikert, E. A.

“…A new methodology using nanoparticle projectile secondary ion mass spectrometry was developed to identify statistically significant co-localization of tagged…”
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Characteristics of positive and negative secondary ions emitted from Au3+ and Au400+4 impacts by DeBord, J. D., Fernandez-Lima, F. A., Verkhoturov, S. V., Schweikert, E. A., Della-Negra, S.

“…The current limitation for SIMS analyses is insufficient secondary ion yields, due in part to the inefficiency of traditional primary ions. Massive gold…”
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Real-time localization of single C60 impacts with correlated secondary ion detection by Eller, M. J., Verkhoturov, S. V., Della-Negra, S., Rickman, R. D., Schweikert, E. A.

“…We assembled hardware and software for the synchronized detection of electrons and ions emitted under the impacts of the individual C60+ and C602+ ions. A…”
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Photon emission from massive projectile impacts on solids by Fernandez-Lima, F. A., Pinnick, V. T., Della-Negra, S., Schweikert, E. A.

“…First evidence of photon emission from individual impacts of massive gold projectiles on solids for a number of projectile‐target combinations is reported…”
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Matrix-enhanced cluster-SIMS by Locklear, J.E., Guillermier, C., Verkhoturov, S.V., Schweikert, E.A.

“…We have used 23 keV C 60 + projectiles in the event-by-event bombardment and detection mode to investigate the emission of the gramicidin S [ M − H] − ion…”
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Influence of massive projectile size and energy on secondary ion yields from organic surfaces by Guillermier, C., Negra, S. Della, Rickman, R.D., Pinnick, V., Schweikert, E.A.

“…We investigated the influence of the projectile size and energy using Au n q+ clusters (5 < n < 400, 1 < q < 4) impacting on a glycine target with a 19 q–34 q…”
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Statistics of electron and ion emission from single massive cluster impacts by Verkhoturov, S. V., Eller, M. J., Della-Negra, S., Rickman, R. D., Locklear, J. E., Schweikert, E. A.

“…We demonstrate several fundamental characteristics of coemissions of secondary ions and electrons from homogeneous targets. The custom‐built device consists of…”
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Calcium Phosphate Phase Identification Using XPS and Time-of-Flight Cluster SIMS by Chusuei, Charles C, Goodman, D. Wayne, Van Stipdonk, Michael J, Justes, Dina R, Schweikert, Emile A

“…Reproducible time-of-flight cluster static secondary ion mass spectra (ToF-SSIMS) were obtained for various standard calcium phosphate (CP) powders, which…”
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Molecular ion emission from single large cluster impacts by Verkhoturov, S.V., Rickman, R.D., Guillermier, C., Hager, G.J., Locklear, J.E., Schweikert, E.A.

“…We investigated the emission of the secondary ions stimulated by single impacts of 136 keV Au 400 4+ projectiles. The study was carried out on targets of…”
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Simultaneous ejection of two molecular ions from keV gold atomic and polyatomic projectile impacts by Rickman, R D, Verkhoturov, S V, Parilis, E S, Schweikert, E A

“…We present the first experimental data on the simultaneous ejection of two molecular ions from the impact of Au(+)(n) (1< or =n< or =4) with energies ranging…”
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