Tuesday, July 16, 2013

Broken

The gold sputterer has been broken for a week.

The ellipsometer has been broken since Friday. 

No gold means no experiments. 
No experiments means no progress. 

And there are only three weeks left, so I have to do something. I can't just waste time. 

So today I reinforced my steam slide, because when cardboard gets wet, it get soggy and then my steam slide would get destroyed. So I spent two hours this morning wrapping it in packing tape. It seems to be working pretty well. 


Thursday, July 11, 2013

So excited!

I was really excited about what I did today and no one else was. So hopefully y'all are. 

I needed a more consistent way to put water on my gold chips, so I acquired a dehumidifier. But that shoots the water vapor up, and I needed it to shoot down. So naturally, I modified it. 

The following pictures are of the modified dehumidifier and some of my results. 





Monday, July 8, 2013

Today

Today has pretty well so far. Unfortunately, I do not know what to do next.

Research Probs. 

Wednesday, July 3, 2013

Time.

Before I got here, 10 weeks seemed like forever.

Now 10 weeks seems entirely too short. 


While there are some members if this REU that I will probably never talk to again, there are others that I will miss dearly and who I fear will not think twice about me once we all go our separate ways. 


Thank you for giving me this opportunity to meet these people.


Sunday, June 30, 2013

Absolutely Nothing

I accomplished absolutely nothing this week.
I analyzed data and waited for the grad students in my lab to discover what is wrong with our gold because I cannot do anything without gold.

On Monday afternoon we figured out that the oven where the gold is annealed was not working properly.
On Tuesday the oven was fixed and I read papers.
On Wednesday I worked on my goal sheet and waited for one of the grad students to determine if the oven was in fact properly fixed before we annealed oodles of gold.
On Thursday we discovered that the oven was fixed properly but that for what I need the gold for, I didn't need annealed gold.
On Friday, I attempted to use un-annealed gold so that I could actually accomplish something this week. Turns out while contact angle and FTIR work on unnealed gold, PDMS peels off unnealed gold resulting in the chips being rendered useless.

Literally accomplished nothing.

Oh wait! I made PDMS molds in the shape of Legos. So I guess I did accomplish one thing... or nine really.

And the most frustrating part is that Brian only trusts one person to anneal gold, so no one annealed gold until Friday afternoon and since they have the keys and passwords and what not, they were supposed to text me if/when they got the gold out of the oven so that I could do some catch up work over the weekend. Well, that worked out splendidly. Looks like this is going to be a 60 hour work week in three days for me... oh wait. That's impossible.

To make things all the better this week, socially our group is going downhill. It seems that cliques have formed which are zero fun and keep not including the rest of us in the funtivities. Well, they can't be much fun without the 6 of us that keep "missing" our phone calls.

And Nate had surgery and will be gone for a couple more days, and so that's even more of a bummer because he and I often work in the same lab and now the lab is very quiet and significantly less fun. It seems as though he is doing well though, which is excellent.

So... yeah...

Here's to hoping it gets better!


Lego PDMS stamp molds.

Got one mold off. Now for the other.

Side view with one mold off.

Got them all out successfully!


The gold peeled off.... -__-



Sunday, June 23, 2013

Pictures post.

I haven't added any pictures in a while, so I'm just going to do a whole post of pictures so there is a sense of what I look at all day (not necessarily in the order that I look at them).

Goniometer - used to measure contact angle


Gold coated silicon chips in solutions.


The chips in their containers. (Watch, they multiply.)



The chemicals I'm using to create my monolayers and the ink for stamping.

My FTIR buddy!




Close up of the goniometer while measuring contact angle.

Close up of inside the FTIR.



The Monster's University Cheez-its I had one day.





The silicon chip I cracked when trying to get my PDMS stamps off.


Plasma cleaner.

Plasma cleaner.



Plasma cleaning microwave for gold sputtering.


FTIR while filling with liquid nitrogen.


Half of the files I work with every time I do FTIR.

Discouraging.

Nothing went the way I expected it to this week. It was very discouraging. People keep saying, that's research. Well, that's not helpful.

Monday: Spent the whole day analyzing data from Friday and figuring out what the next step in the process will be. Unfortunately, when I figured out what the next step was around 2pm and went to crack some gold coated silicon, there was no more. Whoever used the last bit forgot to tell anyone else. (And this set the tone for the rest of my week.)

Tuesday: We had to sputter more gold onto the silicon. I was going to watch this process and literally sit there for 4 hours staring at a giant, cylindrical, silver vat, but the only one that Brian (the equipment manager, for lack of knowing his actual title) only trusted Chris to sputter the gold. Well, Chris told Dr. Berron and Jacob that he would help him move an arrayer from one of the medical buildings to FPAT 751. So, guess what I got to do. It was actually quite entertaining. Jacob and Dr. Berron enjoy cracking jokes. But we arrived at the arrayer and these ladies who run the machine told us we were crazy if we thought four skinny people could move all this equipment and that we needed big burly men. They didn't quite understand that this was happening whether she thought so or not. But I think Dr. Berron significantly underestimated the amount of stuff that comes with an arrayer. You have the actual machine which is a giant box that took up most of the trunk space in Dr. Berron's SUV. With that comes a computer (circa 1990's with the giant monitor and tower), a dehumidifier (and not a fun elephant shaped one), and a grey box half the size of the actual arrayer (no clue what it's job is). But that's not all, there is also a scanner that has its own computer (yes, again giant circa 1990's) and accessories. And the whole system requires four 4 gallons jugs for water and waste, etc.
That took until around noon. Then it was almost time for the CeNSE tour with Jenn and Dan. Went to that and saw some very interesting things on the SEM. Very cool.

When that was over, I reported back to my lab to start doing some research. I figured they had to be done sputtering by now. Nope. Little did I know, they have to sit over night. Awesome. Two days of researching down the drain.

Wednesday: Finally got to performed the next step in my research. Repeat and extended time trials of stamping the Mercaptoundecanoic Acid with analysis via contact angle and FTIR. Unfortunately, the contact angles were not repeating what I obtained last week for the contact angles. And whenever your data is not reproducible, you have to figure out why. I talked with 5 people. No one has any idea. I had 15 samples today instead of 24, so FTIR was only 3 hours. But, before you can do FTIR, you must plasma clean your control chip. I had to wait an hour to use the plasma cleaner. So that was fun. Ended up leaving the lab around 5:30-6.

That night a bunch of people (grad students and REU students) went to Pazzo's. It was a ridiculously amount of fun and just what I needed after the last three days.

Thursday: Analyzed my FTIR data. Repeated the timed stamping process for the other three solutions to determine if they are reproducible or not. Again did FTIR for three hours. FTIR and I are becoming quite good friends. I also went over to Dr. Trinkle's lab to make new PDMS stamps. Because while these stamps are supposed to be reusable and durable, perhaps the problem is that the stamps are getting old and not adsorbing the thiols as well as we need them to. It's a 1-2 hour process to make the stamps and at least 3 hours of curring. It would have been 6 if I waited for the curring to finish, so I put them in the over for overnight. Went back to the lab and read some papers that did not help solve my problems.

That night we went to the Lexington Legend's game which was also a lot of fun. So far this week, the days were frustrating, but the nights were stress relieving, so I guess that's good. 

Friday: Got the new stamps out of the oven early in the morning and took them back to Dr. Berron's lab to repeat the timed stamping of all four solutions with fresh stamps. It took all morning to stamp the solutions and measure the contact angles. Then we had IGERT lunch. And then I did FTIR until 5ish on my 12 samples.

That night Nathaniel's band was playing at JDI and it was Jenn's birthday (or close to it) so we all went out to support them. The band was excellent! and it was fun being with everyone. But I honestly just wanted to go to bed. Once we left and I got in my bed though, I was wide awake. Typical.

Saturday: It was UK day at King's Island so we all went. The day started out terrible and then was literally a rollercoaster. We got stuck in construction traffic so our 2 hour drive turned into a three hour drive. We got lunch with a bunch of UK alumni. We got in line for our first ride at 1 o'clock. This did not bode well for the rest of the day. It took two hours to get on the ride. Although, standing in line for hours upon end allowed us all to bond and had it's entertaining moments. We went on 3 more rides as a group and by this time it was 6ish. A group wanted to do the Congo River Falls or whatever where you get soaked and there were some of us that had absolutely no desire to get drenched when the sun was going down and we had a couple of hours to dry. I have been to King's Island more times than I can count. I have been on that ride before. My step sister ruined phone on that ride. But no one wanted to listen to me about how everything gets drenched. So they went on that despite my advice and 6 of us went on The Beast. Which is the rollercoaster that KI is known for. So I had to take them on that one. It was about a 30 minute wait for a 5 minute roller coaster. How many coasters do you know that lasts 5 minutes? Not many which is why I emphasized the importance of needing to ride this one in KI. We rode that and went to ride another when it started sprinkling. We had waited in line for about 15 minutes, when they told us they were permanently shutting down the ride because of lighting. Awesome. We walked back to the main gate. Called everyone and it took abut half an hour for all of us to get together. People were being snotty and nasty and I was tired of a couple of them. So I just wanted to leave and not have to deal with certain people anymore. I am not really a people person. So I can only take certain doses of people at a time, and sometimes it just gets to be too much. Luckily, the four people that got in my car, were not people that I wanted to pummel across the parking lot.

By the end of the day, I was exhausted and frustrated and had to drive two hours home. But we needed to eat dinner still. We were passing my home town on the way back, so I took them all to my favorite Chinese restaurant (which they agreed was grade A Chinese food) and then on a tour of my town. Only one of them had ever been in a firehouse before, so I took them inside and took their pictures on the fire truck. I have to say, this was the highlight of the day. They didn't stop smiling the whole time. It was awesome. And since I was literally a mile from my house, we stopped at my house so I could see my family and they met them. My mom told me that she was glad to get to meet some of the people that I was spending my days with. I gave them a driving tour of my school's campus (which is tiny and took all of two minutes) and then we were back on the road for another hour to Lexington. I can honestly say that the last four hours of that car ride were what made everything worth it. I have a new appreciation for these people and their ability to make me laugh. In any other situation, all of us would probably never naturally gravitate towards each other. But this is just the perfect storm of nerdiness and close quarters that make us all friends right when we need them.

Sunday, June 16, 2013

Busy Week.

It's been a busy week.

Last weekend was full of goal sheets and powerpoints.
Monday was full of research and worrying about giving my presentation.
Tuesday morning was full of worry and Tuesday afternoon was full of presentations. I was super nervous and sped through mine in typical Ellen fashion but apparently it was decent anyway and I didn't completely butcher it.

Wednesday I went to the lab and finished soaking monolayers and analyzing them. I got there in the morning and finished all my monolayers by noon so then after lunch all I had to do was use FTIR. I had 12 samples and so FTIR took me about three hours. I went back to my dorm after and analyzed the data. It didn't really tell me as much as I hoped.

Thursday I started making stamps in Dr. Trinkle's lab. I went there in the morning and learned how to make the stamps and made a couple. I also read a paper on the protocols of microcontact printing while I was waiting for my first stamps to set. This paper suggested making them taller so that you could hold the stamps with my fingers. I used the laser cutter to cut three of the same molds. I stacked them on top of each other to make a taller mold and poured the PDMS. I put this in the oven to cure and so while it cured I went over to Dr. Berron's lab and used the stamps I made in the morning. I stamped using all 4 solutions for three different durations: 10s, 20s, 30s with re-inking in between. I then measured the contact angle for each. By the time this was complete it was 6:30 and I was ready to go home.

Friday was a very busy day. I got Dr. Trinkle's lab early to get my tall PDMS stamps out of the mold. I cracked the silicon chip getting the stamps out and felt terrible about it. This was the last silicon wafer that was smooth. Dr. Trinkle assured me that it was alright and if the worst thing I do is brake an $8 wafer, I'm doing fine. After acquiring my stamps I went back to Dr. Berron's lab and stamped all four solutions. This time I placed the stamps three times, but did them for the same duration and did not re-ink in between stamps. I had to measure the contact angle for each one. It was about 11:30 when this was finished. And then I proceeded to do FTIR. For four and a half hours. I had plasma clean the control chip, which I dropped and had to plasma clean again. It was just that kind of a day. It was around 4 o'clock when I finally finished FTIR and then went back to my dorm and packed up to go home.

I'm glad I got to go home. But it doesn't feel like it's been three weeks already. I'm really close with my family and I literally got a running welcome home from my littler sister. I think it's safe to say she missed me.


*Pictures to come later. Phone is currently dead. Oops.

Tuesday, June 4, 2013

Days 3-8

I had the intention of blogging every day. That way I could look back and remember what I did every day. Clearly that idea failed.


Day 3: Thursday, May 30th.
After a 24 hour soak, the monolayers were present on gold chips. (Whoo!) But this needed to be verified. I then performed three processes on all 6 chips.

1. Measuring the contact angle: I did this by using placing a droplet of water and then measured the angle of the droplet on the chip. For two of the monolayers, the water beaded up like you would expect on a rain jacket. This indicated that the monolayer was hydrophobic. For the other monolayer, the water spread very thinly across the chip making it very difficult to measure the angle and indicating that the monolayer was hydrophilic.

2. Ellipsometry: Again I journeyed to the CeNSE lab and used the ellipsometer to measure the thickness of the monolayer. We told the device the thickness of the silicon chip and the gold (as measured two days before). The ellipsometer then measured the thickness of the entire chip and subtracts out the silicon and gold revealing only the thickness of the monolayer.

We ran out of time and so the third processes needed to take place on Day 4.


Day 4: Friday, May 31st
3. FTIR: Chris (another student in Dr. Berron's lab) helped me use the FTIR to determine the frequencies of the 6 chips. Each chemical has a unique set of characteristic frequencies that can be seen on the graph produced from the FTIR. By examining the wavelength of these peaks, we can determine the components of the monolayer thus ensuring that the monolayer we placed on the chip is the monolayer we wanted to adhere to the chip. For all 6 chips, it was confirmed that the monolayer was that which we wanted on the chip.  This took like 3 hours. It was annoying. First we had to do a control. But we had to clean it using the plasma cleaner (which we had to wait 45 minutes to use) and then analyze it using FTIR. And each FTIR process takes about 15 minutes. So 7 chips later, this took about two hours.

That was all we accomplished for that day.

That night Alex and I were both just sitting in our beds watching TV on our computers. We decided that this was not how a Friday night should be spent. We went to Pint Night on Thursday just us two and while the beer was delicious and the food was good, we wished more people had come along. So then on Friday, we went around and knocked on doors and convinced people to come with us for a walk around town. We ended up going to DQ and literally just walked around UK. It was fun. Built some nice camaraderie. Wish more people would just knock on each other's doors and hang out.


Day 5 & 6: Saturday and Sunday.
I went to my sister's apartment (her husband goes to UK Med School so they live like a 7 minute walk from Donovan). I got to take a good shower! In a real bathroom! It was wonderful. Highlight of my weekend. On Saturday we went to church and Red Lobster for dinner. Which was great because we skyped my mom and little sister before we went to church and my mom texted me while we were in church and told me to put dinner on her card. Free Dinner = Win!

On Sunday we just kinda sat around their apartment for most of the day which was fun. I don't get to see them a lot so it was good to just get to hang and laugh and be just like the old times. I returned to my dorm a little later than I wanted to, but that's okay. I still got all the reading I needed to get done finished.

The readings were very dense and confusing and I'm gonna say I understand maybe 50% of them. Solid. I took notes though which I think helped me better understand it.

Day 7: Monday, June 3rd
So, Leila and I finished everything that Dr. Trinkle and Dr. Berron had planned for the first couple days ahead of schedule so we finished early on Friday and didn't have anything to do on Monday until our meeting with the Drs at 2:00 so I did a little bit more research. The meeting went pretty well I think. Dr. Berron said that most of my results were as expected and that I had made a lot of progress. They asked me a lot of questions and such and I guess it was to verify that I understood what I was doing and not just going through the motions. I think I did pretty well with my responses because Dr. Trinkle and Dr. Berron agreed that they were impressed with my knowledge and how comfortable I was talking about my research already. We talked about the next steps and what not, but mainly we needed this new chemical to come in.

Day 8: Tuesday, June 4th
I thought that Dr. Berron had said something about a combination of monomers that we could try until the new chemical came in. But Leila didn't think we should do anything until it came in. So, I kinda feel like I have been slacking for two days cause I have done pretty much nothing but read articles and look up what words mean. Although I'm pretty sure I semi-understand what I am supposed to be doing now. And I can almost tell you in detail how the FTIR works. So, I guess that's something.


I took a bunch of pictures on Thursday and Friday to give a visual to go with the words. So... let's see if these work.

The construction work that's happening outside my window that wakes me up at 6am everyday.

The beer when Alex and I went to Pint Night on Wednesday. It was Sunner Korsch.

This is what my desk looks like.

My 6 chips in their petri dishes that are properly labeled.

My very own tweezers!

The solutions I made that I soaked the chips in to create the monolayers.

My attempt to take a selfie in a ruined silicon chip coated in gold.

Second Attempt.
Third Attempt: Success!!

What the chip looks like without my face in it and before cracking. (This chip is actually ruined, but you get the idea.)

What a poorly cracked chip looks like. (This chip was also ruined and so I practiced the art of cracking with a sharp pointy metal object.)