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Nanotechnology & Material Science News and Discussions

nanotechnology nano microtechnology micro material science metamaterials graphene atomic engineering molecular manufacturing nanobots

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#101
wjfox

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Nanotech device mimics dog's nose to detect explosives

22nd November 2012

Inspired by the biology of canine scent receptors, UC Santa Barbara scientists have made a chip capable of rapidly identifying trace amounts of vapour molecules.

http://www.futuretim...012/11/22-4.htm

#102
Sciencerocks

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Researchers make flexible, low-voltage circuits using nanocrystals

http://phys.org/news...nocrystals.html

November 26, 2012
Posted Image
Enlarge
This is a flexible circuit fabricated in the Kagan lab. Credit: David Kim and Yuming Lai
(Phys.org)—Electronic circuits are typically integrated in rigid silicon wafers, but flexibility opens up a wide range of applications. In a world where electronics are becoming more pervasive, flexibility is a highly desirable trait, but finding materials with the right mix of performance and manufacturing cost remains a challenge.

#103
Sciencerocks

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Developing 'second skin' military fabric to repel chemical and biological agents
November 27, 2012
http://phys.org/news...l-chemical.html

Military uniforms of the future may offer a new layer of critical protection to wearers thanks to research by teams at the University of Massachusetts Amherst and several other institutions who are developing a nanotube-based fabric that repels chemical and biological agents.
UMass Amherst polymer scientists Kenneth Carter and James Watkins, collaborating with team leader Francesco Fornasiero of Lawrence Livermore National Laboratory (LLNL), recently received a five-year $1.8 million grant to design ways to manufacture the new material as part of a $13 million project funded by the U.S. Defense Threat Reduction Agency. It's estimated that the new uniforms could be deployed in the field in less than 10 years.
The researchers say the fabric will be able to switch reversibly from a highly breathable state to a protective one in response to the presence of the environmental threat without the need for an external control system. In the protective state, the uniform material will block the chemical threat while maintaining a good breathability level. "The uniform will be like a smart second skin that responds to the environment," says Fornasiero.



#104
Sciencerocks

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Nature Materials Study: Boosting Heat Transfer With Nanoglue
Interdisciplinary Study From Rensselaer Polytechnic Institute Demonstrates New Method for Significantly Increasing Heat Transfer Rate Across Two Different Materials

A team of interdisciplinary researchers at Rensselaer Polytechnic Institute has developed a new method for significantly increasing the heat transfer rate across two different materials. Results of the team’s study, published in the journal Nature Materials, could enable new advances in cooling computer chips and lighting-emitting diode (LED) devices, collecting solar power, harvesting waste heat, and other applications.
By sandwiching a layer of ultrathin “nanoglue” between copper and silica, the research team demonstrated a four-fold increase in thermal conductance at the interface between the two materials.

Nature Materials Study: Boosting Heat Transfer With Nanoglue | ZeitNews

#105
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http://io9.com/59671...-the-real-world

The trouble with the word "nanotechnology" is that it refers mostly to an idea from science fiction and futurism: nanoscopic, self-replicating machines that can turn any piece of matter into another piece of matter in seconds. These do not exist. In the real world, materials scientists, physicists, and biology researchers are working at the nanoscale to build everything from stretchy circuit boards and self-healing plastic to super condoms and cancer medicines. Here are eight innovations that actually exist at nanoscale, and could be about to change your life.


Live content within small means. Seek elegance rather than luxury, Grace over fashion and wealth over riches.
Listen to clouds and mountains, children and sages. Act bravely, think boldly.
Await occasions, never make haste. Find wonder and awe, by experiencing the everyday.

#106
Casey

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Does that first sentence mean to say that nanobots don't exist yet, or that it's just flat-out impossible and never will exist?

#107
kjaggard

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Does that first sentence mean to say that nanobots don't exist yet, or that it's just flat-out impossible and never will exist?


It's mostly saying that the common understanding of 'Nanotech' is active nanobots that are programed and these are sci-fi concepts. Our understanding of it has completely bypassed the actuality of it.

Real world Nanotech has been known from the start to likely pass through at least two phases. passive and then active. Basically materials first and then machines. The vast majority when they think about it jump from none at all to active machines.
Live content within small means. Seek elegance rather than luxury, Grace over fashion and wealth over riches.
Listen to clouds and mountains, children and sages. Act bravely, think boldly.
Await occasions, never make haste. Find wonder and awe, by experiencing the everyday.

#108
Sciencerocks

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Nanotechnology allows scientists to capture and preserve cancer cells circulating in the bloodstream
December 17, 2012

A new-generation nano-platform capable of capturing circulating tumor cells and releasing them at reduced temperature. Credit: RIKEN Scientists from the RIKEN Advanced Science Institute in Japan and University of California Los Angeles report a new nanoscale Velcro-like device that captures and releases tumor cells that have broken away from primary tumors and are circulating in the bloodstream. This new nanotechnology could be used for cancer diagnosis and give insight into the mechanisms of how cancer spreads throughout the body.



Read more at: http://phys.org/news...-cells.html#jCp

#109
Sciencerocks

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Synthetic and biological nanoparticles combined to produce new metamaterials

Scientists from Aalto University, Finland, have succeeded in organising virus particles, protein cages and nanoparticles into crystalline materials. These nanomaterials studied by the Finnish research group are important for applications in sensing, optics, electronics and drug delivery.

"Virus particles – the old foes of mankind – can do much more than infect living organisms. Evolution has rendered them with the capability of highly controlled self-assembly properties. Ultimately, by utilising their building blocks we can bring multiple functions to hybrid materials that consist of both living and synthetic matter," Kostiainen trusts.

http://phys.org/news...amaterials.html



#110
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Super-fine sound beam could one day be an invisible scalpel

Published on Dec 19, 2012

A carbon-nanotube-coated lens that converts light to sound can focus high-pressure sound waves to finer points than ever before. The University of Michigan engineering researchers who developed the new therapeutic ultrasound approach say it could lead to an invisible knife for noninvasive surgery.

 

http://www.ns.umich....visible-scalpel

 

 

Posted Image


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#111
StanleyAlexander

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SCIENTISTS ACHIEVE NEGATIVE TEMPERATURES

 

http://www.foxnews.c...-absolute-zero/

 

 

 

Negative temperatures could be used to create heat engines — engines that convert heat energy to mechanical work, such as combustion engines — that are more than 100-percent efficient, something seemingly impossible. Such engines would essentially not only absorb energy from hotter substances, but also colder ones. As such, the work the engine performed could be larger than the energy taken from the hotter substance alone.

Read more: http://www.foxnews.c.../#ixzz2H8kulOxC
EDIT: Same link @ bottom.  Amazing implications for energy, physics, cosmology

Edited by StanleyAlexander, 05 January 2013 - 09:52 PM.

Humanity's destiny is infinity

#112
Ru1138

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^Fox News? Really? You couldn't find a better source?


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What difference does it make?


#113
StanleyAlexander

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haha not really... here's an ARStechnica one

 

http://arstechnica.c...erature-system/

 

Here's a better one...

 

http://www.theverge....te-zero-barrier


Edited by StanleyAlexander, 05 January 2013 - 10:58 PM.

Humanity's destiny is infinity

#114
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http://www.scienceda...30104143516.htm

 

is seems to me that calling it negative absolute temperatures is really more a quirk of language and definitions. this link repeatedly says it shares some connections with supposed dark matter and I find that an interesting idea.

 

But aside from what actually is going on it makes me wonder if there might be applications for this sort of thing. I can see nanoscale sterling engines used as energy harvesters from the environment and all the waste energy we have. It might also be a potential way to get increadibly efficent solar tech by harvesting far more of the energy and regulating the temperatures of the cells.

 

It may also have applications in heating and cooling as well as refrigeration. Basically any field that moves or generates thermal energy could benefit from this as it seems to be super fine scale managment of those energies.


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Live content within small means. Seek elegance rather than luxury, Grace over fashion and wealth over riches.
Listen to clouds and mountains, children and sages. Act bravely, think boldly.
Await occasions, never make haste. Find wonder and awe, by experiencing the everyday.

#115
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That article really confused me.  I don't have a very clear understanding of what they actually did.

 

So it wasn't really below 0K because.. that's impossible, but it was hotter than infinitely hot? 

So if I stuck my finger in there would it be hot or cold?  Also what the heck..science is crazy.


Hey.  Stop reading.  The post is over.


#116
Ru1138

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haha not really... here's an ARStechnica one

 

http://arstechnica.c...erature-system/

 

Here's a better one...

 

http://www.theverge....te-zero-barrier

 

Okay. It's just that Fox News tends to be a bit sensationalist with some things and that bothers me.


What difference does it make?


#117
Raklian

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That article really confused me.  I don't have a very clear understanding of what they actually did.

 

So it wasn't really below 0K because.. that's impossible, but it was hotter than infinitely hot? 

So if I stuck my finger in there would it be hot or cold?  Also what the heck..science is crazy.

 

This kind of science looks crazy to us now but, in the future, it will be a very normal, common-sense understanding even children will comprehend.

 

Look at us now! We know flying through the air to be possible due to aerodynamics. Even the brightest minds during the early 18th century had no idea. :)


Edited by Raklian, 06 January 2013 - 05:51 PM.

What are you without the sum of your parts?

#118
Raklian

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Artificial molecular manufacturing machine mimics nature

 

An industrial revolution at the nanoscale is taking place in laboratories at The University of Manchester with the development of a highly complex machine that mimics how molecules are made in nature.

 

Leigh explains: “The development of this machine, which uses molecules to make molecules in a synthetic process, is similar to the robotic assembly line in car plants. Such machines could ultimately lead to the process of making molecules becoming much more efficient and cost effective.

 

“This will benefit all sorts of manufacturing areas, as many manmade products begin at a molecular level. For example, we’re currently modifying our machine to make drugs such as penicillin.”

 

http://www.kurzweila...protein-builder

 

Posted Image

 

 

 

 

This may be the very first, most basic precusor to the future molecular assembler/replicator.

 

Exciting times in the next few decades. :)


Edited by Raklian, 11 January 2013 - 03:01 PM.

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What are you without the sum of your parts?

#119
tornado64

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This is awesome news, I'm very excited about this molecular manufacturer.



#120
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Whoah, that's a gateway to the replicator (and gray goo). More about the researcher: http://www.catenane.net







Also tagged with one or more of these keywords: nanotechnology, nano, microtechnology, micro, material science, metamaterials, graphene, atomic engineering, molecular manufacturing, nanobots

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