3D Printed Nanomachines May Soon Be a Reality | Web Pro News

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3D printing is usually used to create visible objects. It’s very rare that we get to see people experimenting in the creation of nanoscale objects. The few experiments in the field thus far have been used in medical applications, but the future may in fact lie in manufacturing.

Aalto University researchers have found a way to shape 3D objects by creating bends with compressive stress induced by an ion beam. It’s utterly fascinating, and could lead to a future of simple nanoscale manufacturing.

So where does 3D printing fit into all of this? The above technology is all about the shaping of objects. It can’t be used to create the actual parts that power the devices. In the future, 3D printers will be able to create the necessary components needed to power these incredibly small devices.

Fabbaloo suggests that the technology can be used to create the invisible machines of the future. It seems like something out of science fiction, but nanotechnology is becoming more advanced all the time. It won’t be long until we have thousands of nanomachines floating around in our bloodstreams and regulating our health.

Until then, the rest of us can appreciate the artistry that’s inherent to science. For those who want to dig a bit deeper, the researchers have posted their findings on this wiki. It also includes the various publications that they’re work has been featured in. Anybody with even a passing interesting in nanoelectronics will want to check it out.

Source:  http://www.webpronews.com/3d-printed-nanomachines-may-soon-be-a-reality-2012-10


Scientists Reveal New Insights On Nano 3D Printing | R&D

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A nanostructure fabricated using EBID.Techniques for the manipulation of matter at the nanoscale are a step further ahead with the publication of new results from a University of Technology, Sydney (UTS) research group.

A team of physicists funded by FEI Company and the Australian Research Council have unveiled new physics behind the nanofabrication technique known as electron beam induced deposition (EBID), essentially 3D printing at the molecular level.

The UTS team has reported new insights into the behavior of molecules at surfaces to achieve extraordinary improvements in speed and the quality of materials fabricated using the EBID technique.

Using the UTS FEI laboratory and an advanced research grade electron microscope the scientists have been able to explain the nature of chemical reactions on hot, solid surfaces and to “write” highly pure nanostructures.

The UTS experiments have led to the discovery that the EBID technique performs optimally under conditions previously dismissed as ineffective, due to gaps in prior understanding of the basic science behind EBID.

One of the researchers, Professor Milos Toth says, “Techniques for manipulation of matter at the nanoscale critically underpin the development of future generation electronics, photonics and materials used in renewable energy technologies.”

“Our findings help advance the techniques and build the machines used to advance nanoscale science and technology.”

“These discoveries are enabled by the cutting edge FEI equipment used by research staff and students at UTS,” Toth says.

Source:  http://www.rdmag.com/news/2012/11/scientists-reveal-new-insights-nano-3d-printing

New Technique for Nanostructure Assembly Pioneered | Science Daily

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ScienceDaily (Oct. 18, 2012) — A team of researchers from the University of Florida department of chemistry has developed a new technique for growing new materials from nanorods.

Materials with enhanced properties engineered from nanostructures have the potential to revolutionize the marketplace in everything from data processing to human medicine. However, attempts to assemble nanoscale objects into sophisticated structures have been largely unsuccessful. The UF study represents a major breakthrough in the field, showing how thermodynamic forces can be used to manipulate growth of nanoparticles into superparticles with unprecedented precision.

The study is published in the Oct. 19 edition of the journal Science.

“The reason we want to put nanoparticles together like this is to create new materials with collective properties,” said Charles Cao, associate professor of chemistry at UF and corresponding author of the study. “Like putting oxygen atoms and hydrogen atoms together in a two-to-one ratio — the synergy gives you water, something with properties completely different from the ingredients themselves.”

In the UF study, a synergism of fluorescent nanorods, sometimes used as biomarkers in biomedical research, resulted in a superparticle with an emission polarization ratio that could make it a good candidate for use in creating a new generation of polarized LEDs, used in display devices like 3-D television.

“The technology for making the single nanorods is well established,” said Tie Wang, a postdoctoral researcher at UF and lead author of the study. “But what we’ve lacked is a way to assemble them in a controlled fashion to get useful structures and materials.”

The team bathed the individual rods in a series of liquid compounds that reacted with certain hydrophobic regions on the nanoparticles and pushed them into place, forming a larger, more complex particle.

Two different treatments yielded two different products.

“One treatment gave us something completely unexpected — these superparticles with a really sophisticated structure unlike anything we’ve seen before,” Wang said.

The other yielded a less complex structure that Wang, and his colleagues were able to grow it into a small square of polarized film about one quarter the size of a postage stamp.

The researchers said that the film could be used to increase efficiency in polarized LED television and computer screens by up to 50 percent, using currently available manufacturing techniques.

“I’ve worked in nanoparticle assembly for a decade,” said Dmitri Talapin, an associate professor of chemistry at the University of Chicago who was not involved with the study. “There are all sorts of issues to be overcome when assembling building blocks from nanoscale particles. I don’t think anyone has been able to get them to self-assemble into superparticles like this before.”

“They have achieved a tour-de-force in precision and control,” he said.

Source:  http://www.sciencedaily.com/releases/2012/10/121018141842.htm