Related Experiment Video
Updated: Jun 13, 2026
06:15
Ultrafast Laser-Ablated Nanoparticles and Nanostructures for Surface-Enhanced Raman Scattering-Based Sensing Applications
Published on: June 16, 2023
Intense laser alignment as a route to control of surface reactions
Deepika Shreenivas1, Anthony Lee, Nadine Walter
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
The Journal of Physical Chemistry. A
|April 23, 2010
Summary
Controlling molecular orientation during surface reactions is possible. Gas-phase projectile alignment influences adsorbate orientation and adsorption site on silicon surfaces.
Area of Science:
- Surface Science
- Chemical Physics
- Computational Chemistry
Background:
- Controlling molecular orientation is crucial for surface reactions.
- Understanding adsorbate behavior on semiconductor surfaces is key.
Purpose of the Study:
- To investigate controlling adsorbate orientation and site via projectile alignment.
- To study the I(2)/Si(100) adsorption reaction dynamics.
Main Methods:
- Classical trajectory simulations.
- Utilizing ab initio data for accuracy.
- Focusing on gas-phase molecular beam alignment.
Main Results:
- Iodine molecules (I(2)) adsorb with axes parallel to the Si(100) surface.
- Initial alignment does not affect parallel adsorption.
- In-plane orientation and adsorption site are controllable via alignment.
Conclusions:
- Gas-phase projectile alignment offers control over surface reaction outcomes.
- Surface properties and reaction dynamics dictate control mechanisms.
- Findings provide insights into surface chemistry and reaction engineering.
