nanotechnology?
nanotechnology?
(OP)
In the next future engineering will be focused in nanotechnology?
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RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
Luis
RE: nanotechnology?
Definitely a worry!
There was something in the news recently about bucky balls killing fish or something. Can't remember where I saw it.
That said being able to put tiny metallic spheres into cancer tumours and stimulate them to effectively cook the cancer is kind of cool.
Ken
RE: nanotechnology?
The basic premise is that nano-tech has become mainstream, there are large "factories" which do nothing but take in air, dirt, and water to dissect them for their elements. The elements are then shipped all over the world where they can be re-assembled via in-house rapid production modules into whatever the designer created. Basically, instead of mailing a knitted wool hat, you e-mail somebody the pattern and the machine spits out a hat.
The risks came from the swarms of self-sustaining microbots (made out of nano-bots) that acted as security forces and filtration systems.
Realistically, this kind of thing sounds a long way off, particularly with more mundane concerns like energy costs and such. However, the label on my new khakis claim nanotechnology was used to make them stain-proof, so we'll see...
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
It would seem to me that responsibly use nanotechnolgy in aplications that have a finite risk of escape of particles, it would be necceary to first (a) execute a series of tests in a lab that simulate the release on downstream biota or ecosystems and document the results, similar to the way drugs are tested prior to approval (b) provide on file with a regulatory agency samples of the nanobits as well as a technical description of the product, so that if it is found in the wild, we know where it originated and who is repsonsible for damage(c) provide proof of insurance liability or substantial self insurance that can be gtapped by an aggrieved party in case you F*** up.
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
Nanotechnology has been in use for many years however it was not called nanotechnology. Polishing compounds are nanotechnology. Coloidial suspensions are another example. Reverse osmosis is another nanotechnology. Case hardening is an example of atomic diffusion of carbon at a nano level.
Nanotechnology means a great many things to different people. Harmful substances are harmful substances. As we create new harmful substances safeguards will have to be developed.
RE: nanotechnology?
You hit the nail right on the head right there. Nanotechnology has been around a long time. Many of us already make a living working with nanoscopic processes (I do). Thin films, tempering, copolymers, etc. All materials science issues are fundamentally small scale (from molecules to grains). What has changed a lot in the last few decades is our ability to image and analysis things on such a small scale. SEM, TEM, AFM, XPS, nanoindentors, etc have all become affordable tools for industry.
RE: nanotechnology?
RE: nanotechnology?
Nano techniques have being used trough catalysts improvements but I think that there are still some niche opportunities due to oil prices increase. A typical oil barrel is 5% of fuel gas, 25% of naphtha gas 50% of diesel fuel and 20% of residuum. 20% of residuum is a great niche for nano techniques developments to maximize valuable products extraction and reducing wastes. Another potentiality for nano techniques would be on the transforming of actual bad emissions in more environment friendly emissions.
“Nano-techniques take advantage of the unique physical and chemical behaviour of materials at near-atomic sizes. But the behaviours are not yet completely predictable, especially in terms of their long-term effects; the behaviours of nano-machines may not necessarily always be controllable; and nano-everything has the potential to cause environmental and health problems because of the extremely small sizes and unusual behaviours.”
Being just a curious on this matter I suppose that one cannot speak about “nano machines” but instead in particles manipulation acting in physics forces, electric fields, electrostatic forces, chemical interaction, local heating, electrical currents, molecular cohesion, vibrations. Through that manipulation atoms properties are altered and act as a different “machine” as it was before being manipulated.
Luis Marques
RE: nanotechnology?
Needless to say, the fabbed components and assemblies were also interesting.
RE: nanotechnology?
It comes home to you when you get a spec for a chuck which specifies its required performance in microns & nanometers.
RE: nanotechnology?
By Dinos Mavroidis
“There are many difficult problems that need to be solved before we obtain ready to be used nano-mechanisms. One of the more important problems is to find ways to interface (i.e. connect) the various nano-machine elements to each other so that we form multi-element assemblies. Another very important problem is "sensing" in the nano-world. We need to have easy to use and accurate sensors that will be able to give us a "view" of the nano-mechanism and its environment. Sensors are also very important for developing control strategies for the nano-mechanisms. I consider these two problems - "sensing" and "assembly" - as the most important, after we have identified the basic elements that are needed to form a nano-machine.
would like to make a distinction between nano-mechanisms and nano-devices. The first is a subset of the latter. Nano-mechanisms are devices that will create and transfer motion and / or force, in order to perform their task. Nano-devices are any type of machines that will be able to perform any type of function in the nano-environment, even tasks that do not require any motion or force generation. I think that we will be able to develop nano-devices performing useful tasks very soon, within the next decade. I believe that the first useful nano-devices will be nano-sensors. For the nano-mechanisms, we will have to wait a long time, probably over 30 years before we see a functioning device in a real task. Of course before that there will be many prototypes of nano-mechanisms in the laboratory. However, I would like to point out that it is very important to have working nano-devices and nano-mechanisms as soon as possible, if we would like to keep the interest and funding of federal agencies and industry at the same level as it is today. There are many examples in the past that certain technologies were very popular for a few years, but the research community was unable to deliver working prototypes for commercial applications in a relatively short time, and as a result we saw a sudden decline in the sponsors' interest, funding, and support.”
For more on this subject go to
http://www
RE: nanotechnology?
Do you work for Veeco (if you don't mind me asking)?
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
RE: nanotechnology?
http://stm2.nrl.navy.mil/how-afm/how-afm.html
RE: nanotechnology?
I spend a third of my working life on an AFM. Actually, the fact that I had experience with AFMs in college is what got me hired. Of all the analytical instruments I used regularly, Veeco are the only company that provides good software and good technical support.
RE: nanotechnology?
I am new so don't really understand the technology that well but there are a lot of clever types here who do.
RE: nanotechnology?
http://www.veeco.com/pdfs.php/166