Nanotechnology Web Quest
Answer the following questions [ in your notebook] by researching information from the following website: Nanotechnology
1. What is Nanotechnology? ________________
2. The word comes from the prefix nano-, which means ______. Nanotechnology uses particles that are 1/80,000 the diameter of a human hair. At such a small scale, new physical, chemical, and biological properties become evident.
3. What are the 6 points of the Nanotech Challenge from the Foresight Institute?
- __________ S3 a) waves b) cancel each other c) electron
- __________ S3 d) waves e) interference pattern f) particle g) wave
- __________ S3 h) differently. i) simply observing!
S1-3. What are the 6 points of the Nanotech Challenge from the Foresight Institute? a) Meeting global energy needs with clean solutions, b) Providing abundant clean water globally, c) Increasing the health and longevity of human life, d) Maximizing the productivity of agriculture, e) Making powerful information technology available everywhere, f) Enabling the development of space
From: What nanotechnology makes possible...
1. _____ _____ have removed up to 96% of a major contaminant (trichloroethylene) from ground water at an industrial site. 2. _____ _____ will operate from within the human body. Examples such as implantable insulin-dispensing devices and miniature cochlea ear implants already exist.
3. _____ _____ on paper-thin, flexible electronic paper can display moving text and images.
4. _____ _____ can be used in robotics, cloned life forms and synthetic human organs.
5. _____ is a nano material used to mark computers and other objects with serial numbers able to be read with an optical microscope but invisible to the naked eye. The new material makes inventory and theft control easier.
6. _____ _____, made of polymers, function for a specific period of time while the body heals itself and then degrade into non-toxic products. These include sutures and stainless steel implants.
S2-13 a) skilled staff, b) brilliant students, c) infrastructures, d) instruments, e) co-ordination, f) and that people understand
From "What is Nano" PowerPoint Presentation [found in the teachershare drive...technology folder...Nano stuff folder]
7. Everything is made up of ______. S2-12 more surface area
8. Atoms build _____ or form materials. S2-11a) absolute precision, 11b) complete control of processes , 11c) less energy
9. Ever since the first human beings started to 'make things', we have started from _____ _____ (wood, stones, mineral ores) to obtain or extract what we want.S2-10. 'small things'
10. Now we want to start from _____ _____ (atoms and molecules), to assemble them and to obtain what we want. S2-9 'big things'
11. Starting from small things means _____ _____ (down to one single atom!), _____ _____ _____ _____ (no waste?), and the use of _____ _____ (with less CO2, less greenhouse effect). S2-8 molecules
12. You will see that given equal weight (or better, mass), smaller means _____ _____ _____.
13. What do we need to process faster? S2-7 atoms.
- _____ _____ S2-6. Biodegradable implants
- _____ _____ S2-5. Stuffdust
- _____ (laboratories) S2-4. Synthetic DNA
- _____ S2-3. Electronic ink
- _____of efforts and "critical mass", funds. S2-2. Surgical nanobots
- and that _____ _____ what we are trying to do S2-1 Iron nanoparticles
Watch Video Teachershare folder...TechnologyFolder...Nano Stuff folder. [You will need a set of headphones to hear the video.] Fill in the 'lettered' blanks.
Dr. Quantum explains the importance of double slit experiment in physics.
If we randomly shoot small objects, say marbles, at the screen through a slit we see a pattern on the wall where they went through the slit and hit. Now, if we add another slit to the right of the first one, we would expect to see a second band duplicated to the right.
Now, lets look at waves. The __(a)__ hit the slit and radiate out, striking the back wall with the most intensity directly in line with slit. When we add a second slit something different happens than with marbles. If the bottom of one wave meets the top of another, they ___(b) ___ ____ out - now there is interference pattern on the back of the wall: places where the two tops meet are the highest intensity and where they cancel - there is nothing!
Now, let's go quantum!
An ___(c)___ is a tiny, tiny bit of matter, like a tiny marble. It behaves just like marbles. If we shoot it through a single slit, we see a single band on the screen. Now if we add another slit we should get, like marbles, two bands. But we got interference pattern!
We fired electrons - tiny bits of matter through - but we get a pattern like __(d)__, not like little marbles.
How? It doesn't make sense!
The physicists are clever and thought that these little marbles, electrons, bounce off each other and create this pattern so they decided to shoot one electron at a time. After hours and hours of waiting they noticed the same ____(e)____ ____!
The conclusion is inescapable - the single electron leaves as a ___(f)___, becomes a ___(g)___ at the slits and interferes with itself to hit the wall like a particle!
But mathematically it is even stranger - it goes through both slits and it goes through neither, and it goes through just one and it goes through just the other. All of these possibilities are in superposition with each other. But physicists were completely baffled by this! So, they decided to peek and see which slit the electron actually goes through! They put a measuring device by one slit to see which one it went through. But the quantum world far more mysterious than they could have imagined - when they observed the electron went back to behaving like a little marble - it produced a pattern two bands NOT an interference pattern!
The very act of measuring or observing which slit it went through meant it only went through only one, not both.
The electron decided to act __(h)__. As if it was aware it was being watched! S1-2. One billionth
And it was here that physicists stepped forever into strange, never world of quantum events.
What is matter? Marbles or waves? And waves of what? And what does an observer does have to do with any of this?
The observer collapsed the wave function by ___(i)___ _____!
S1-1. Nanotechnology is the creation of useful/functional materials, devices and systems through control of matter on the nanometer length scale and exploitation of novel phenomena and properties (physical, chemical, biological) at that length scale. Nanotechnology is the creation of materials, devices, and systems using individual atoms and molecules.