N
Nicholas Winograd
Researcher at Pennsylvania State University
Publications - 439
Citations - 19157
Nicholas Winograd is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Ion & Secondary ion mass spectrometry. The author has an hindex of 68, co-authored 438 publications receiving 18319 citations. Previous affiliations of Nicholas Winograd include Case Western Reserve University & University of Duisburg-Essen.
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Proton transfer in time-of-flight secondary ion mass spectrometry studies of frozen-hydrated dipalmitoylphosphatidylcholine.
TL;DR: Combining the demonstrated enhancement of phosphatidylcholine lipid signal from water with the freeze-fracture preparation techniques described herein demonstrates potential advantages of studying biological samples in a frozen-hydrated state.
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Molecular dynamics simulation study of molecular ejection mechanisms: keV particle bombardment of C6H6/Ag{111}
TL;DR: In this article, the mechanism of molecular desorption from surfaces bombarded by energetic(keV) ion beams has been investigated, and the experiments are finding wide applicationin areas as diverse as imaging of biological samples, processing of electronic materials, and characterization of polymers.
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Surface Sensitivity in Cluster-Ion-Induced Sputtering
TL;DR: The ion beam-induced removal of thin water ice films condensed onto Ag and bombarded by energetic Au, Au2, Au3, and C60 projectiles is examined both experimentally and with molecular dynamics computer simulations, showing the characteristic depths of projectile energy loss, rather than escape depths of the sputtered Ag atoms through the water ice overlayer.
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Mechanisms of CO ejection from ion bombarded single crystal surfaces
TL;DR: In this paper, the response of Ni(001) microcrystallite to 600 eV Ar+ ion bombardment when it is covered with 0.5 monolayer of CO was calculated.
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Controlling gold atom penetration through alkanethiolate self-assembled monolayers on Au{111} by adjusting terminal group intermolecular interactions.
Zihua Zhu,Thomas A. Daniel,Masato M. Maitani,Orlando M. Cabarcos,David L. Allara,Nicholas Winograd +5 more
TL;DR: It is found that Au atoms evenly penetrate into the CH(3) and CO(2)CH( 3) films, forming smooth buried layers below the organic thin films, suggesting that van der Waals forces and H-bonds are not strong enough to block Au from going through but that ionic interactions are able to block au penetration.