Presenter Information

Faith LewisFollow

Major

Chemistry

Anticipated Graduation Year

2022

Access Type

Open Access

Abstract

Scanning tunneling microscopy (STM) is a technique that is used to take atomic-scale images. Using the STM, the surface of a curved silver crystal was imaged after it had been exposed to atomic oxygen (AO). The images were then analyzed, looking at the differences of the features on a silver’s surface. My project specifically looked at absorption patterns. A homogeneous pattern shows oxygen migrates from the surface to subsurface of the crystal at random locations; there would be no pattern predicting where it absorbs. A heterogeneous process shows migration around defects where oxygen would dominate areas.

Faculty Mentors & Instructors

Dan Killelea, Associate Professor; Marie Turano, Graduate Student; Elizabeth Jamka, Graduate Student; Maxwell Gillum, Graduate Student

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

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Atomic Oxygen on a Curved Silver Crystal

Scanning tunneling microscopy (STM) is a technique that is used to take atomic-scale images. Using the STM, the surface of a curved silver crystal was imaged after it had been exposed to atomic oxygen (AO). The images were then analyzed, looking at the differences of the features on a silver’s surface. My project specifically looked at absorption patterns. A homogeneous pattern shows oxygen migrates from the surface to subsurface of the crystal at random locations; there would be no pattern predicting where it absorbs. A heterogeneous process shows migration around defects where oxygen would dominate areas.