1. Describe your observation of the common liquid in which he started his talk.
He talked about how milk is made up of the small fat cells which move around and can attach to eat other making it curdle.
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.
Charge Stabilization - a colloid can only attract so many layers of ions before there is no attraction.
Steric Stabilization - by using certain polymers, you can prevent certain particles from attaching to one another.
Tuesday, December 20, 2011
Blog Post 15: Dr. Asthana Presentation
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 in metals are the alignment of atoms in the material when it is produced. These boundaries effect the brittleness and firmness of the material.
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.
By heating the materials to a very high temperature and cooling them quickly one can lower the grain size. Crystal silicon is melted and held below 1417C and a single crystal seed starts to grow then cooled.
Grain boundaries in metals are the alignment of atoms in the material when it is produced. These boundaries effect the brittleness and firmness of the material.
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.
By heating the materials to a very high temperature and cooling them quickly one can lower the grain size. Crystal silicon is melted and held below 1417C and a single crystal seed starts to grow then cooled.
Blog Post 13: Nano and Proteins
1. Post a brief description (and link) to a general overview of MALDI.
Matrix-assisted laser desorption/ionization is a soft ionization technique used in mass spectrometry. Can be used to allow rapid sequencing of proteins and is crucial now for protein analysis.
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 : 200 - 300 nm
collagen : 300 nm
myosin : 10nm step size
4. Research and post a cool nano-application that involves proteins.
Growing cells in the eye to make better measurements inside the eye.
http://www.nanotech-now.com/news.cgi?story_id=44142
Matrix-assisted laser desorption/ionization is a soft ionization technique used in mass spectrometry. Can be used to allow rapid sequencing of proteins and is crucial now for protein analysis.
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 : 200 - 300 nm
collagen : 300 nm
myosin : 10nm step size
4. Research and post a cool nano-application that involves proteins.
Growing cells in the eye to make better measurements inside the eye.
http://www.nanotech-now.com/news.cgi?story_id=44142
Blog Post 9: Intro to Invention Project
I will be working with Thomas Trostle and Steve O'Brien.
We want to do something computer based like faster processing, better cooling using carbon nanotubes, or water proofing of components.
We want to do something computer based like faster processing, better cooling using carbon nanotubes, or water proofing of components.
Tuesday, November 8, 2011
Blog Post 11: Invention Team/Timeline
I will be working with Thomas Trostle and Steve O'Brien on the invention project.
Friday, October 14, 2011
Blog Post 7: Diffraction Experiment with Simulation
| The numbers on this image correspond to the positions |  |
| Position 1 The distance between line patterns for green = 1 cm, red = 1.25 cm |  |
| Position 2 The distance between line patters for green = 1 cm, red = 1.25 cm |  |
| Position 3 The distance between line patters for green = 1.5 cm, red = 2 cm |  |
| Position 4 The distance between line patters for green = 1.5 cm, red = 2 cm |  |
Position 1 and 2 are 80nm apart with a thickness of 60nm.
Position 3 and 4 are 120nm apart with a thickness of 60nm.
Tuesday, October 11, 2011
Blog Post 6: Good Nano Websites
http://nano.gov/
http://www.foresight.org/nano/
http://www.nanotech-now.com/
http://www.nanowerk.com/
http://www.nanotechproject.org/
http://www.p2i.com/technology
http://domino.research.ibm.com/comm/research.nsf/pages/r.nanotech.html
http://www.crnano.org/whatis.htm
http://www.nanoforum.org/educationtree/electronics/electronics-computers.htm
http://www.azonano.com/news.aspx?newsID=13144
http://www.foresight.org/nano/
http://www.nanotech-now.com/
http://www.nanowerk.com/
http://www.nanotechproject.org/
http://www.p2i.com/technology
http://domino.research.ibm.com/comm/research.nsf/pages/r.nanotech.html
http://www.crnano.org/whatis.htm
http://www.nanoforum.org/educationtree/electronics/electronics-computers.htm
http://www.azonano.com/news.aspx?newsID=13144
Tuesday, October 4, 2011
Blog Post 5: Wave Interference Simulation Activities
1. Measure the wavelength of two drops of different amplitude, leave frequency constant.
low amplitude : 4.34 cm
high amplitude : 4.34 cm
2. Measure the wavelength of two drops with different frequency, leave amplitude constant.
low frequency : 6.52 cm
high frequency : 0.98 cm
3. Explain your results for question 1 and 2.
As you change the amplitude the wavelength does not change just the height of the wave, but when you change the frequency then the faster you have the frequency the smaller the wave length becomes.
4. Introduce a second faucet for the next set of questions.
X -> A ~ 3.47 Y -> A ~ 3.43
X -> B ~ 3.48 Y -> B ~ 6.11
low amplitude : 4.34 cm
high amplitude : 4.34 cm
2. Measure the wavelength of two drops with different frequency, leave amplitude constant.
low frequency : 6.52 cm
high frequency : 0.98 cm
3. Explain your results for question 1 and 2.
As you change the amplitude the wavelength does not change just the height of the wave, but when you change the frequency then the faster you have the frequency the smaller the wave length becomes.
4. Introduce a second faucet for the next set of questions.
- measure the wavelength of the two drips, in cm
- then measure distances from each drip to the 6 constructive interference points and report these values, cm
- explain the observation you have on the distance comparisons to the constructive interference points to the wavelength of the water wave.
Wavelength of the two drips : 2.5 cm
X -> A ~ 3.47 Y -> A ~ 3.43
X -> B ~ 3.48 Y -> B ~ 6.11
X -> C ~ 6.10 Y -> C ~ 3.52
X -> D ~ 6.09 Y -> D ~ 8.59
X -> E ~ 6.03 Y -> E ~ 6.06
X -> F ~ 8.60 Y -> F ~ 6.08
The distance between the constructive interference points are about the same to a little bit bigger than the wavelength of the individual drip.
Tuesday, September 27, 2011
Blog Post 3: Waves
Questions:
1. Fast up and down
2. High energy
3. 0.98 Hz
4. 3.7 Hz
5. 0.98 Hz
6. 58 cm
7. 16 cm
8. Energy is proportional to frequency because the higher the frequency the more energy is needed to make it. If there is high energy then there is a lower wavelength but if there is low energy there is a higher wavelength.
1. Fast up and down
2. High energy
3. 0.98 Hz
4. 3.7 Hz
5. 0.98 Hz
6. 58 cm
7. 16 cm
8. Energy is proportional to frequency because the higher the frequency the more energy is needed to make it. If there is high energy then there is a lower wavelength but if there is low energy there is a higher wavelength.
Blog Post 2: Unit Cell of NaCl
Height, width, length : 1.104 nm or 11.04 angstroms or 1.104 * 10^-9 m
Mass
Number of molecules in one cube of salt : 5.9454 * 10^18
Mass of grain of salt : 5.77 * 10^-4
Dimension
A grain of salt is 1.25 * 10^17 cubic nm
Tuesday, September 20, 2011
Blog Post 1: Describe 10 nm and mole of atoms
How can one really describe something so small? It would take 1 billion of them just to make a meter, something one could walk in a second. Since Menomonie to Des Moines is about 1000 km and that is also 1 billion millimeters then walking 10 mm of that trip would be the same as 10 nm.
On the other spectrum we have a mole which can be a huge number. A mole come from the number of particles in 12 grams of carbon-12. This number is about 6.02 * 10^(23). So if you were to have a mole of people that would be 6.02 * 10^(23). This number is so big its hard to truly comprehend its size. If 1 mole of pennies was given out to all the people in the world then each person would have enough money to spend 1 million dollars an hour for the rest of their life. The US dept right now is almost 15 * 10^(12) this number is not even close to a mole.
On the other spectrum we have a mole which can be a huge number. A mole come from the number of particles in 12 grams of carbon-12. This number is about 6.02 * 10^(23). So if you were to have a mole of people that would be 6.02 * 10^(23). This number is so big its hard to truly comprehend its size. If 1 mole of pennies was given out to all the people in the world then each person would have enough money to spend 1 million dollars an hour for the rest of their life. The US dept right now is almost 15 * 10^(12) this number is not even close to a mole.
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