September+28-29

September 28-

-Scanning sample of Au(III) exposed to beta-particle source for 1 hour -Using portable STM

-set point: 1.0 nA -P-gain: 10000 -I-gain: 1000 -Tip voltage: 50mV -slope: 0 x



-poor definition- possibly due to tip quality or the sample itself (exposure to radiation specifically) -more extreme shifts in z-range too place more often, leading to an large drop off, causing the image to black or white out

September 29-

-Scanning sample of Au(III) exposed to beta-particle source for 1 hour -Using portable STM -using sample from yesterday

-set point: 1.0 nA -P-gain: 10000 -I-gain: 1000 -Tip voltage: 50mV -slope: 0 x



-for the second day, there was poor definition in the scans. -given that this was a different tip, i am tempted to believe that this was due to the sample whether this was from the sample preparation of exposure, i do not know. Natalie usually makes exceptional samples, and we still are ignorant of some of the effects of the beta particles. -therefore, i would think this is due to the exposure- though i am not sure how exactly