Project Updates / Status

Here are the updates for the projects:

I ought to provide some updates about the project status but I'm quite busy with other stuff and hence delay.

4th Nov: Last week , I'm very busy with project and of course the amended versions of last and the final HRM tutorial (presentation) on leadership.

My adviser told me the earlier portions of the algorithm were incorrect and needed refinements. I quickly made changes and did some refinements. Just got back the changes on Monday and these few days focused on adviser's comments and made necessary changes to the draft version.

Recheck and recheck before the final version. Don't forget 6th Nov is the deadline for the report!


5th Nov: 6th Nov is the deadline for the report! Progress? Panic.

A great deal of time spent just to check and check through the alignments, settings, configurations, and of course print and submit to respective Profs.

6th Nov: The deadline for the upcoming report!
Submitted. Now, there is still need to showcase / demo the simulations and presentations.

Just hope that everything will be fine.


// Re-edited on 11th Nov

- wong chee tat :)

Field Emission Cathodes and modelling

While surfing the internet and searching some journals from the local library databases, I came across the above picture. I can't remember where I got it from.

Basically, it is a array of Field Emission cathodes. You can see it with your naked eyes. It is typically quite small (microns or nm).

Notice the shape of the individual cathodes are very much like pencil or permanent markers or even some candles. If we consider only one such cathode and consider the tip, it would like similar like this model:





Well, you can say that the model (second picture) does not look the same as that the first picture, but if you decrease the width of the FE cathode, the resulting model would look similar to the model.

Looking at the model, it is plotted in x-y coordinates or simply y is a function of x,
y =f(x), where x is a complicated equation and I don't want to put it here.

Since we know the relationship between y and x, how can we make it sharper or as sharp as possible at the tip of the cathode?


- wong chee tat :)

Project Updates

This blog post is about the project updates & thus can be quite boring to read unless the reader is interested in my progress and experimental results.

There was some slight delay in installing the compiler, Matlab and I can only do so after my exams. Anyway, the exams had ended (yay! )and so I should be focusing more on the project.

The code was simulated using a commercial compiler, Matlab and the model was obtained succesfully after checking through errors. Some stupid errors.

As mentioned by Prof, the specified variables (beta, J and A) should be calculated and obtained.

According to the observations and simulations, there are some variables don't really follow as what had discussed earlier with Prof and I wonder what had caused the differences.

- wong chee tat :)

Carbon nanotubes

Carbon nanotubes?

Yes, some pics of them here ( from wikipedia):

Another :

- wong chee tat :)