Kiloelectronvolt particle-induced emission and fragmentation of polystyrene molecules absorbed on silver: Insights from molecular dynamics

Article Abstract:

Molecular dynamics (MD) simulations of 500 and 5 keV argon bombardment of adsorbed polystyrene (PS) tetramers on silver were undertaken.

Observations, Collisions (Nuclear physics), Silver, Particle collisions

---

High yield events of molecular emission induced by kiloelectronvolt particle bombardment

Article Abstract:

The sub-kiloelectronvolt and kiloelectronvolt Ar atom-induced sputtering of polystyrene tetramers adsorbed on Ag{111} is modeled using classical molecular dynamics in an effort to improve the understanding of large molecule emission in organic secondary ion mass spectrometry (SIMS). It is observed that molecular dynamics indicate that the massive ejection of substrate atoms, clusters, and molecules can be induced by kiloelectronvolt particle bombardment of organic overlayers on metals.

Industrial Gas Manufacturing, Industrial gases, Argon, Electric properties, Chemistry, Physical and theoretical, Physical chemistry, Silver compounds

---

Understanding gold-thiolate cluster emission from self-assembled monolayers upon kiloelectronvolt ion bombardment

Article Abstract:

A study on the physical processes underlying the emission of gold-thiolate clusters from octanethiols/Au self-assembled monolayers (SAMs) under ion bombardment is conducted. It was found that [M.sub.x][Au.sub.y] clusters eject predominantly in high-sputtering-yield events, through a late process and their emission stats from the overheated liquidlike region created in the gold crystal as a result of the high energy density deposited by the collision cascade.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Gold, Monomolecular films, Chemical properties, Ion bombardment, Ion beam irradiation

Similar abstracts:

• Abstracts: Proteins in vacuo. Denaturing of disulfide-intact and disulfide-broken lysozyme probed by molecular dynamics simulations
• Abstracts: Kinetic study of stabilizing effect of oxygen on thermal degradation of poly(methyl methacrylate). Competitive vaporization and decomposition of liquid RDX
• Abstracts: Carbon monoxide adsorption on selected fold clusters: highly size-dependent activity and saturation compositions

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.