Week+of+Oct+13

Whoa.......time goes by so fast. Today I'm kind of stressed out............................................................. :( But well, let's get over it.
 * Oct 13, Monday**

Today, we were able to get images from the real sample. First, it did not quite work... There were bunch of lines that hinders the accurate observation. So we guess that the tip is not quite working so we made a new tip.

Making a tip started with having a dull thin wire looking thing. We used an equipment to sharpen the wire thing. Grab the middle part of the wire, and slide the equipment off with some force. Then, we were able to get a sharpened tip.

When you doing this, the magnifying glass might be helpful. Anyway, after making a sharp tip, we could get a clear image which is shown below.



But this image was kind of odd. Well, it's a very clear image but the surface normally does not look like this (?). So we figured out that after we cleared the surface's surface out with the tape, that might affected the surface's condition. Because when we looked at the surface, it was very vulgar.

well,, I'll write down more tomorrow since the time ran out. the images will be explained too.


 * Oct 14, Tuesday**

We can clearly see that there's a line thing in every image captured below thus can conclude that the line actually exists. I'm pretty sure that the line thing got created when we cleaned up the surface with the tape. I think since the surface is pretty sensitive, when we were taking off the tape, the surface followed the tape and they stood up.





Today we had such an early dismissal and I was very happy about it. We just went to school and took a senior picture, ate donuts, and wrote some writing prompts. That was it. It was sWEEt.
 * October 15, Wednesday**

I did some rotation work down there with the same samples and images captured above.

__**Rotation**__

I did some rotation work, and the surface still has the line. The angle of line has been changed though.





Well, today is such a happy day without any special reason! First, let me upload the images that I captured today. I got pretty interesting images today. The images were mostly very flat.  __**## Change In Z-Range **__ look at this.. This is a beautifully flat surface. I'm impressed. So, when the surface is very flat, we mainly see the orange color which does not have reflections. Plus, when we look at the wave, it's almost a straight line.
 * Oct 16, Thursday**

I remained the settings unchanged, and rotated the samples to observe the other ranges of surface. We can see it's little bit bumpy.

At same condition as above, I just increased the value of Z-Range ( 25nm -> 50nm). We can see that the surface looks more flat with the increased range.

I even increased Z-Range more to 100nm. Now we can evidently see that the wave is very flat (it's almost a straight line. It's even straighter than the one above) Moreover, the scanned image is so clean with very little dark spots. It looks very smooth. Consequently, we can conclude that the higher Z-Range shows more flat surface. Probably this is because that the smaller value of Z-Range observe much more details by closely looking into the surface.

Yeah, as I stated just above, I abruptly tried the Z-Range with very small number. Z ranged changed from 100nm to 12.5 nm and we can definitely see that the surface is not that flat as above ones, but we could see more details. Generally, however, this sample's surface seems to be fairly flat which is good I guess. (?) 
 * __## Change in Scan Range__**

Let the Z-Range unchanged, I changed the Scan Range. (Basically, I just zoomed in and that changed the Scan Range smaller.) Even though the prior image (Z-Range 12.5nm, Scan Range 100nm) was little bit bumpy, when I zoomed up, the surface seems to be pretty flat. But when I zoomed in more (Z-Range :12.5nm, Scan Range 50nm -> 16.6nm), the surface actually turned to be little bit bumpy again as seen below. I wonder why. It might be probably because there are various spots that are flat and not flat, and I think it's just matter of picking those spots.



When I zoomed in more, the surface got little bit stablized. We can compare that by the wave lengths they produced. This wave length is closer to the straight line.

And when I finally zoomed down into 2nm, the surface was generally flat.

Overall, I think this surface seems to be flat in general.