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  • Surface chemical reactions induced by well-controlled molecular beams: translational energy and molecular orientation control.

Surface chemical reactions induced by well-controlled molecular beams: translational energy and molecular orientation control.

Journal of physics. Condensed matter : an Institute of Physics journal (2011-03-10)
Michio Okada
ABSTRACT

I review our recent studies of chemical reactions on single-crystalline Cu and Si surfaces induced by hyperthermal oxygen molecular beams and by oriented molecular beams, respectively. Studies of oxide formation on Cu induced by hyperthermal molecular beams suggest that the translational energy of the incident molecules plays a significant role. The use of hyperthermal molecular beams enables us to open up new chemical reaction paths, and to develop new methods for the fabrication of thin films. Oriented molecular beams also demonstrate the possibility for controlling surface chemical reactions by varying the orientation of the incident molecules. The steric effects found on Si surfaces hint at new ways of achieving material fabrication on Si surfaces. Controlling the initial conditions of incoming molecules is a powerful tool for creating new materials on surfaces with well-controlled chemical reactions.

MATERIALS
Product Number
Brand
Product Description

Supelco
Chloromethane solution, 200 μg/mL in methanol, analytical standard
Sigma-Aldrich
Chloromethane solution, 1.0 M in tert-butyl methyl ether, anhydrous
Sigma-Aldrich
Chloromethane, ≥99.5%