Scanning Tunneling Microscopy Studies of Organic Monolayers Adsorbed on Th Rhodium(111) Crystal Surface
Title | Scanning Tunneling Microscopy Studies of Organic Monolayers Adsorbed on Th Rhodium(111) Crystal Surface PDF eBook |
Author | Paul Davis Cernota |
Publisher | |
Pages | 272 |
Release | 1999 |
Genre | |
ISBN |
Scanning Tunneling Microscopy Studies of Organic Monolayers Adsorbed on the Rhodium(111) Crystal Surface
Title | Scanning Tunneling Microscopy Studies of Organic Monolayers Adsorbed on the Rhodium(111) Crystal Surface PDF eBook |
Author | |
Publisher | |
Pages | 136 |
Release | 1999 |
Genre | |
ISBN |
Scanning Tunneling Microscopy studies were carried out on ordered overlayers on the (111) surface of rhodium. These adsorbates include carbon monoxide (CO), cyclohexane, cyclohexene, 1,4-cyclohexadiene, para-xylene, and meta-xylene. Coadsorbate systems included: CO with ethylidyne, CO with para- and meta-xylene, and para-xylene with meta-xylene. In the case of CO, the structure of the low coverage (2x2) overlayer has been observed. The symmetry of the unit cell in this layer suggests that the CO is adsorbed in the 3-fold hollow sites. There were also two higher coverage surface structures with ((square root)7x(square root)7) unit cells. One of these is composed of trimers of CO and has three CO molecules in each unit cell. The other structure has an additional CO molecule, making a total of four. This extra CO sits on a top site.
Scanning Tunneling Microscopy Studies of the Structures and Dynamics of Molecular Monolayers on the Rh(111) and Pt(111) Single Crystal Surfaces
Title | Scanning Tunneling Microscopy Studies of the Structures and Dynamics of Molecular Monolayers on the Rh(111) and Pt(111) Single Crystal Surfaces PDF eBook |
Author | Yong Chen |
Publisher | |
Pages | 442 |
Release | 2001 |
Genre | |
ISBN |
Scanning Tunneling Microscopy Studies of Chiral Phenomena in Organic Monolayers Adsorbed on Graphite
Title | Scanning Tunneling Microscopy Studies of Chiral Phenomena in Organic Monolayers Adsorbed on Graphite PDF eBook |
Author | Yuguang Cai |
Publisher | |
Pages | 518 |
Release | 2003 |
Genre | |
ISBN |
Scanning Tunneling Microscopy of Organic Monolayers at the Fluid- Solid Interface
Title | Scanning Tunneling Microscopy of Organic Monolayers at the Fluid- Solid Interface PDF eBook |
Author | Valerie J. Marty |
Publisher | |
Pages | 136 |
Release | 1994 |
Genre | Scanning tunneling microscopy |
ISBN |
More that just magnificent views of atoms and molecules, Scanning Tunneling Microscopy, STM, images have the potential to answer some fundamental questions relating to surface molecular dynamics and bonding characteristics of localized species versus more common analytical tools that provide average of bulk sample information. A special feature of the STM is utilized in this study which is the ability to image organic monolayers at liquid-solid interface at ambient conditions. For STM analysis of organic fluids, the choice of a substrate is critical to the success of the images. The substrate must meet three criteria, the ability to sustain a tunneling current, retain an atomically flat surface over the area scanned, and immobilize a monolayer of the sample. The adsorption geometry created by the liquid crystalline materials analyzed in this study provided magnificent detailed features of the sample monolayer on a graphite substrate. These data provide information about the balance of intermolecular forces at the interface. It is illustrated that the quality or amount of information available from any fluid-solid interfacial image is dependent upon the existence of molecular symmetry within the monolayer of the substrate surface.
Dissertation Abstracts International
Title | Dissertation Abstracts International PDF eBook |
Author | |
Publisher | |
Pages | 856 |
Release | 2000 |
Genre | Dissertations, Academic |
ISBN |
American Doctoral Dissertations
Title | American Doctoral Dissertations PDF eBook |
Author | |
Publisher | |
Pages | 848 |
Release | 1999 |
Genre | Dissertation abstracts |
ISBN |