February+13-14

February 13th:

-New sample: Au(III) exposed for 1 week to beta -Cut a new tip prior to the scanning

-The scope didn't approach- -i trimmed the tip twice -applied ethanol to both the sample holder and where it goes in the scope -restarted software and scope

-2-13-12AA -Setpoint: 1 nA (5 nA) -P-gain: 1000 (2000) -I-gain: 2000 (3000) -tip voltage: 0.1 V (1.0 V) -approached with settings in parenthesis, dropped to other settings upon approach for better image quality

-2-13-12AB -Setpoint: 1 nA -P-gain: 1000 -I-gain: 2000 -tip voltage: 0.1 V

-2-13-12AC -Setpoint: 1 nA -P-gain: 1000 -I-gain: 2000 -tip voltage: 0.1 V -the area was good and tip working well so i upped the resolution from 256 samples/line to 512 samples/line (twice the rez)

February 14th:

-same sample as yesterday- Au(III) exposed for 1 week to beta -cut new tip before scanning

-as of 5:00, the scope has not approached -the sample holder moves back and forth freely, but will not approach -i retracted the holder, rinsed/cleaned the scope and holder with ethanol, checked the current with the volt meter (it was fine), restarted the scope and software

-at 5:37 i got it to approach

-2-14-12AA -setpoint- 1.5 nA -p-gain-1000 -i-gain- 1500 -tip voltage- 30mV (.03V)

-2-14-12AB -setpoint- 1.5 nA -p-gain-1000 -i-gain- 1500 -tip voltage- 30mV (.03V)