Voltage-dependent STM images of covalently bound molecules on Si(100)
Article Abstract:
Scanning tunneling microscopy is used in studying voltage-dependent variations in images of organic molecules chemisorbed on silicon. Substrates were obtained from Si(100) wafers and rinsed in methanol. The substrates are then mounted on a tungsten holder with tantalum clips and silicon spacers. A 15-min ultraviolet-ozone treatment is used in oxidizing the surface contaminants. Results indicate that only surface states due to silicon dimers can be observed at small negative bias. The molecules are seen as protrusions with the application of more negative bias.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Adsorption of phenyl isothiocyanate on Si(001): a 1,2-dipolar surface addition reaction
Article Abstract:
Research was conducted to examine the adsorption of phenyl isothiocyanate on silicon (001) surfaces via X-ray photoelectron spectroscopy, scanning tunneling microscopy, Fourier transform infrared spectroscopy and ab initio measurements. Results provide evidence that adsorption onto the Si surface takes place in a highly selective manner. Findings also indicate that the adsorption involves the interaction of the N and C atoms of the N=C=S group with the Si=Si dimer, creating a four-member Si2NC ring at the interface.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Calorimetric measurements of the heat of adsorption of benzene on Pt(111). Adsorption of benzene on a Mo(112)-c(2 X 2)-[SiO]4 surface
- Abstracts: Correlation between colloidal stability and surfactant adsorption/association phenomena studied by light scattering
- Abstracts: Modification of MCM-41 by surface silylation with trimethylchlorosilane and adsorption study. Thickness and stability of adsorbed film in cylindrical mesopores
- Abstracts: Photon pressure-induced association of nanometer-sized polymer chains in solution. Laser-controlled assembling of repulsive unimolecular micelles in aqueous solution
- Abstracts: Indirect radiation effects on thymine in the glassy state of its dilute aqueous solution. Increasing contact-ion pairing as a supercooled water anomaly. Estimation of the fictive temperature of hyperquenched glassy water