1 / 6

In Situ SEM/DC Experiments in Uppsala: Progress Update and Findings (June 2013)

This update from Tomoko Muranaka details the developments in in situ SEM/DC experiments conducted in Uppsala. Noteworthy advancements include the installation of a 3D piezo positioner in October 2012, which enhances targeted measurements and 2D scanning capabilities. Key efforts focus on field emission measurements and understanding grain orientation dependence. Observations reveal issues such as an uneven anode surface and potential deformation of the anode holder. Solutions involve KOH etching and diamond cutting prior to cleaning for improved results.

unity
Download Presentation

In Situ SEM/DC Experiments in Uppsala: Progress Update and Findings (June 2013)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. In situ SEM DC experiments in Uppsala – update 17 June 2013 Tomoko Muranaka

  2. 3D piezo positioner installed Oct 2012 • What we can do: • Target measurement spot • 2D scanning • Searching weak point

  3. Plan • Field emission measurement: Grain orientation dependence • Field emission measurement: Stability measurement • Breakdown: EBSD, Evidence of dislocation (?)

  4. Grain orientation dependence • (111) and (001) grains are chosen thanks to EBSD done by Anité. • One reference spot to determine the gap (1um) on the (111) grain. • Three measurement spots on each grains. • Voltage that the measured current exceeded 10nA were 400 to 800 MV/m on each grains.

  5. Grain identification

  6. But… • Anode surface was ugly. • Anode holder was probably loose due to deformation of other side of the tip (mechanical cut) Solution: • KOH etching • Diamond cut before cleaning

More Related