Saturday, December 31, 2011
Saturday, January 30, 2010
I graduated from DCTC last spring and now I don't need to take classes at DCTC anymore. I still have this blog and I would like to donate it to some DCTC student who is interested in nanotechnology. If you would like to keep this blog moving (by adding pictures and writing articles), please leave a comment with your e-mail and I will enter in contact with you.
Friday, April 17, 2009
Wednesday, April 8, 2009
We have a test/quiz on sputtering today for thin films. We will have the last class for X-ray diffraction after this we will learn about FTIR and other things. We could not do the TEM class because someone lost a grid in the optical path. We will try to do the TEM class on the 20th.
Monday, March 2, 2009
Ok, there are so maaaany news that I don't know where to start.
Let me go by classes.
Microelectronics - The professor of this class is also the director of the http://www.nfc.umn.edu/ and he knows everything about semiconductor (just a reminder that everything in this blog is Martim's opinion only and of course I can't be responsible for anything I write here). It seems that all in semiconductor is related somehow to diffusion; therefore, my tip is: if you know all the formulas about diffusion, you will do fine for the first week. The teacher also brings some samples (e.g. semiconductor boule, arch lamps...) to the class sometimes and it is interesting to see that he cares to bring those things to class when most people don't pay too much attention to that.
Characterization class - There are 5 (maybe more maybe fewer) teachers specialist for this class and each teacher (for each instrument) determines 20% of your grade. We begun with SEM and TEM and now we are studying AFM. The same teacher that lectures is the one in the lab and that reduces redundancy in information (the microelectronics lab has different teachers for lecture and lab and because of that we many times see all things twice).
Thin films - What I like about this class is the convenience. The teacher said in the first day of class "if all the other teachers give you too much to read, tell me and I reduce my reading part. If they don't five you too much to read, I can give you more things to do". That class is that simple and easy. In most classes people would try to argue with the teacher to get reduced homework but in this class we don't even try because we know that the teacher would eventually accept and I guess the students think that that would be too easy.
Bionano - This class is located in the St. Paul campus and we don't have homework for this class (actually, we don't have homework to any class but the microelectronics one, but we have lab have reports and readings). People who like Biology, really like Biology, so they can stay reading about Biology forever. Since I don't love Biology, the 89459 reading pages are always hard for me. Do you like Biology? Good for you.
Nanoparticle - The nanoparticle class is pretty simple and consist of a total of 5 classes. This is what we usually do-> an aerosol of the solution that we want the particles, then we dry the droplets (ending up w/ the NP only), we then neutralize them, separate by sizes, and count; we introduce some variations and see how that affects the # of particles, and sizes, and charge, and all that. By the way, the particles we synthesize are of sugar, salt, or Poly-Styrene Latex (they are not dangerous at all).
Microelectronics lab - I already patterned and etched a wafer, aligned a mask, opened and closed the oxidation furnace, saw PECVD and LAD working, measured oxide thinness in the ellipsometer, and lost a pen in the fabrication facility. I also broke wafers in the right crystal plane direction. This is one of the main labs.
Overall the classes are not hard, but they take time. E.g.: is not hard to run simulation of SEM in a computer and contrast with what you get in real life but to do that may take you a full day. Understand?
Sunday, January 18, 2009
Friday, January 16, 2009
to buy the following books:
Fabrication Engineering At The Micro & Nanoscale, 3rd (9780195320176 Campbell),
Mt 3121 Sec.1 Tran Course Packet 281055910039B (which is not a book),
Bionanotechnology : Lessons From Nature (9780471417194 Goodsell).
As a good student, I waited until the last days to buy the books!
http://www.umn.edu/lookup?SET_INSTITUTION=UMNTC&type=name&CN=&campus=a&role=any to know your user name to log in in your U of M account (just type your last name to find yourself. If nothing is found, then you did not initiate your account, and you will need the letter that they sent you (your student ID is there) to initiate the account). [If I knew the last 3 lines 2 hours ago, I would not have wasted 2 hours trying all passwords and possible user names that I can imagine... ]
Sunday, December 21, 2008
Saturday, December 20, 2008
After three semesters, you will have read that much. Those are all papers that I got from the classes; each folder is one class. I will select one random paper per day from each folder and post it here.
Thursday, December 18, 2008
Sunday, December 7, 2008
If you have google calendar, just click in the "+ Google Calendar" button to add these events to yours calendar.
Disregard the rowing, cedar park elementary school, and 3m events because they are not part of the program.
These are the classes for the last semester (spring 2009); thus, disregard the fact that you see classes scheduled for this month.
Because they scheduled classes in one day OR other day, you can see that many classes have their hours overlapping.
We should confirm our schedule at http://onestop.umn.edu/
To know what books we will need, go to: http://www.bookstores.umn.edu/textbooks/searchbooks.html
Prior to take the class MT 3141 Principles and Applications of Biotechnology Laboratory (before the first Tuesday of the first week of class) , we will have to complete the online safety training modules: Introduction to Research Safety and Chemical Safety at http://www.dehs.umn.edu/training_newlabsafety.htm
We all have to pay the tuition in full (~$4,853 if full-time) before January 24.
Mine didn't spike. :-(
The little secret to make it spike is to put the magnet not too close to the fluid; it works better when the magnet is half an inch away from the solution.
This is what I had to do last week: 5 lab reports, read 2 manuals, revise two essays, write a 6 pages argument essay, two problems sets for nanoelectronics, take-home test for nanoelectronics, 3 reports about companies and conferences I went, take-home test + homework for quality class, 1 paper critique for biotechnology, problems for material science.
I also had to return some books to the county library and renew a book at my school, do laundry, wash dishes, do groceries, prepare food for the week, wash the bathroom (actually I have to do all kinds of unpleasant chores in my home), talk with my family in South America, prepare something to present to the elementary school students, and now I have to fix my car because it just started to make a squealing noise.
That was one week ago; now I have to do many more things.
Saturday, December 6, 2008
Tuesday, November 18, 2008
If we have time we will try another time but with more indents and we will give tilted coordinates to the instrument hoping to get a straight image at the end.
John demonstrating the laser on the nanoparticles.
Some kids learning about STEM (Science, Technology, Engineering, and Mathematics)
Can you see the link to view the video of the event (it's in your left and top of the screen)?? The pictures were taken by John.
Monday, November 17, 2008
Wednesday, November 12, 2008
Tuesday, November 11, 2008
Thursday, November 6, 2008
Wednesday, November 5, 2008
My Nanoelectronics class math:
Monday, November 3, 2008
I hope this blog will help to promote this amazing program that we are in and thus possible students will have a better notion of what they will learn here at DCTC.
Let me just explain that right now the person writing here is Martim, and English is not my first language thus you will probably see a ton of grammar mistakes because I'm still taking my English classes. :-)