The structure and reactivity of heterogeneous surfaces and study of the geometry of surface complexes
Abstract
This research covers a wide range and scope of material systems and phenomena encompassing a number of systems in various degrees of aggregation (finite clusters and extended systems), thermodynamic states (liquids and solids under equilibrium and non-equilibrium conditions), and characteristic interactions (metals, ionic and polar materials and covalent interactions). Progress during this report is discussed under the following categories: (1) Materials preparation and growth: Liquid-phase and Molecular Beam Epitaxial growth of semiconductors (silicon); amorphous semiconductors. (2) Material surfaces and interfaces: Phase-transformations (surface premelting); surface probes (tip-substrate interactions in Atomic Force Microscopy, AFM); stressed interfaces and interphase (solid-liquid at equilibrium and under shear stress). (3) Finite aggregates: The structure and dynamics of ground state and excited state atomic and molecular clusters and fragmentation dynamics; size dependence of physical phenomena in finite material systems; excess electron attachment, solvation, migration and spectroscopy in polar molecular clusters (water and ammonia); quantum droplets ((He-4) sub n, 50 less than n less than 300) at finite temperature.
- Publication:
-
Progress Report
- Pub Date:
- 1988
- Bibcode:
- 1988git..rept.....L
- Keywords:
-
- Heterogeneity;
- Molecular Beam Epitaxy;
- Phase Transformations;
- Reactivity;
- Surface Properties;
- Ammonia;
- Drops (Liquids);
- Dynamic Characteristics;
- Ground State;
- Helium;
- Interfaces;
- Quantum Mechanics;
- Silicon;
- Simulation;
- Solid-State Physics