Yesterday we had a very informative talk on nanoparticles termed colloids. Dr. Ray showed some great images and videos of nanoparticles in solutions.
1. Describe your observation of the common liquid in which he started his talk.
The picture of the milk was extremely interesting, the fact that you could literally see the material moving around and interacting with each other was pretty sweet.
2. Dr. Ray explain two ways in which keep small particles from sticking to themselves and aggregating in to large masses. He explained that the surface area of these particles is important to maintain to feel the benefits of the nanosize. Explain those two methods that he described.
Sunday, December 18, 2011
Blog Post 15: Dr. Asthana Presentation
Dr. Rajiv Asthana presented to our class his work on nano and micro materials. There were two topics that were of particular interest. For this post I would like for you to explore the topics/questions below:
1. What are grains and grain boundaries in a material? I suggest you focus on metals. Explain how material properties are affected by the size of these grains. Grain Boundaries are the alignment of the atoms which are created when the metal is manufactured.
2. How does one engineer or process materials to reduce the grain size? In particular, I would like for you to explore and then explain how single crystal silicon is produced for the solar industry. One process of reducing the grain boundaries of a substance is to heat the material to an extremely high temperature and then very rapidly cool the material. This will result in extremely small sized grain boundaries
1. What are grains and grain boundaries in a material? I suggest you focus on metals. Explain how material properties are affected by the size of these grains. Grain Boundaries are the alignment of the atoms which are created when the metal is manufactured.
2. How does one engineer or process materials to reduce the grain size? In particular, I would like for you to explore and then explain how single crystal silicon is produced for the solar industry. One process of reducing the grain boundaries of a substance is to heat the material to an extremely high temperature and then very rapidly cool the material. This will result in extremely small sized grain boundaries
Blog Post 14: Final Exam/Project
The final invention project is Due Dec 19, Monday and to be presented to the class during the final exam period which is at 10:00 am in room 150.
An electronic file needs to be submitted of the presentation and the poster to Dr. Schultz. Please submit these in the dropbox on the D2L site.
An electronic file needs to be submitted of the presentation and the poster to Dr. Schultz. Please submit these in the dropbox on the D2L site.
Blog Post 13: Nano and Proteins
1. Post a brief description (and link) to a general overview of MALDI.
MALDI is a great way to examine the molecular structure of different materials.
http://www.sigmaaldrich.com/analytical-chromatography/spectroscopy/maldi-mass.html
2. Post an image (3D) of the following proteins: microcystin LR, collagen, and pick another one of your favorite proteins.
3. Post the size of each of these proteins in nanometers.
Microcystin LR: Around 200nm
Collagen: Around 350nm
Hemoglobin: Between 500-1000nm
4. Research and post a cool nano-application that involves proteins.
A great resource for protein is at the Protein Data Bank at: http://www.pdb.org/pdb/home/home.do
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