this week we continue with the process of preparing graphene samples to test them. This time we apply silicon dioxide around the samples. We use this dioxide to isolate our graphene sample from the environment.
Graphene samples in the oven
We did this because when we exposed it to the environment, graphene changed its resistivity little by little when it was exposed. After covering our samples with silicon dioxide, we had to apply some phosphoric acid on the edges to eliminate the dioxide on the edges and this be able to apply electric current for our tests. We were observing the results of some tests using various graphs, and the mentor explained about our results.
It is very interesting to see how graphene can be used in many things that will bring incredible changes. Also we been learning and reviewing the unities that are used in the current that we apply to the sample, this help me a lot to understand better what we are doing. Outside of the lab, I went to the beach to walk and relax. I am having a good time here, this project is very interesting and I have already learned many things.
There are no comments published yet.