SLSTM

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=**WEEK OF DECEMBER 2ND**= =@WEEK OF DECEMBER 7TH= =@WEEK OF DECEMBER 14TH= =@MILESTONE MAP= ****Overview**** **1. Explain what the concept of STM is and importance of it** -STM is a microscope that can image at the atomic level. STM uses an atomically sharp tip to scan the surface of a sample. It scans across the sample using a constant current between the tip and the surface to map out the topography of the sample at an atomic level. STM is being used to develop nanotechnology. **3. List out the things that needed to scan sample** -a surface of a sample -cylinder -a sharp tip -STM - Annealing is to fire the surface of the sample with hydrogen gas to make the surface flat - In order to effectively obtain atomic resolution, the probe tip must itself be on the atomic scale. Ideally, that implies that the tip should end in exactly one atom. Otherwise, it might see blurry and discursive image by result of double tip. -White screen: when there is no connection between the tip and the surface -To check if the tip crashed the surface: black screen -To check if there is conductivity on the sample: white screen -To have a new tip: both black and white -To clean out inside of STM and the cylinder: when the sample doesn't approach -set point -Tip voltage -image width -Time/Line -Name of files These data are important because these can let us know the in which condition we got an image. We might able to find out our own condition that can get a good image. =@WEEK OF JANUARY 6TH @WEEK OF JANUARY 13TH @WEEK OF JANUARY 21TH @WEEK OF JANUARY 27TH @WEEK OF FEBURARY 04TH @SCIENCE FAIR PROPOSAL @WEEK OF FEBURARY 10TH @WEEK OF FEBURARY 17TH= =@WEEK OF FEBURARY 24TH @WEEK OF MARCH THIRD @WEEK OF MARCH 10TH=
 * **2. What is the goal of project?****-To get an image of dibenzo (a, l) pentacene to get a knowledge of the actual arrangement of atoms and provide information in the field of nanotechnology.
 * **4. What is annealing and why is it needed?****
 * **5. Explain the importance of a good tip****
 * **6. Explain the difference between black screen and white screen when fail to scan****-Black screen: when the tip crash the surface
 * @7. Explain the things that we might try when we fail scan the sample**
 * @8. Things that need to be written when success to scan**

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