This video highlights the automated solution developed for silicon photonic chip production. Physik Instrumente (PI) leads the world in nano-class motion. Nanotechnology covers a wide range of topics—from visionary proposals of atomically precise manufacturing a few decades from now to. This 6-part video series, produced by NBC Learn in partnership with the Science Foundation, explores the hidden world of nanotechnology. The American Society of Mechanical Engineers (ASME) have just posted a new video on the safe development of nanotechnology, featuring former PEN. NanoTube is Nanowerk's Video Database that compiles noteworthy and informative videos in the areas of nanotechnologies and nanosciences. N is for Nanotechnology is an "everyman's" look at how the future will be impacted by this sub-microscopic technology marvel. Nanotechnology is already .
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Finding George Whitesides is often tricky even for George Whitesides. So he keeps an envelope in his jacket pocket.
The reason Boston shows up so frequently, although not amar ghum parani bondhu song often as his wife prefers, is that Whitesides is a professor of chemistry at Harvard University, and Boston Logan is his home airport. Other scientists, government leaders, inventors and investors worldwide want to hear from him.
So Whitesides is something like the Nanotechnology video of science, though taller, more wiry and at age 70, less hirsute. He has a deep voice, with little hint of his native Kentucky. Lately that voice has been introducing audiences to a new nanotechnology project aimed at saving lives in the developing world. On a piece of paper no thicker nanotechnology video wider than a postage stamp, Whitesides has built a medical laboratory.
One day this past winter, Whitesides woke up in his own bed. He wore his typical outfit: A text not on the shelf was No Small Matter: Science on the Nanoscalea newly published coffee-table book by Whitesides and the science photographer Felice C. Nanotechnology is, simply defined, the science of structures measuring between 1 nanometer, or billionth of a meter, and nanometers. Trying to understand nanometers can rapidly induce crossed eyes. The sheet of paper these words are printed on isnanometers thick—the diameter of a human hair, roughly the smallest object a person can see with unaided eyes.
A bacterium sitting atop this paper is about 1, nanometers in diameter—microscopic. To see something only one nanometer in size was impossible untilwhen two IBM physicists invented the first scanning tunneling microscope.
Conventional microscopes use lenses to magnify whatever is in the line of sight. But scanning tunneling microscopes work more like a person reading Braille, moving across the surface of structures by using a nanotechnology video stylus. Now that really small things—right down to linux internals ppt atoms—could finally be seen, Whitesides and other chemists got very interested in nanoscale materials. And what they learned amazed them.
Materials this small, it turns out, have unexpected properties—we were just clueless until we could see them up close. Glass, nanotechnology video an insulator of electric currents, can conduct electricity. Materials that could not carry electric charges suddenly become semiconductors. The metal gold, in small enough particles, can appear red or blue. Scientists have created carbon nanotubes, hollow cylinders two nanometers or less in diameter, that turn out to be the strongest material in the world, times stronger than steel with one-sixth the weight.
Electronics manufacturers say nanowires could make use of waste heat from computers, car engines and power plants. Already, more than 1, consumer products use some form of nanotechnology even though a report from the National Academy of Sciences urged better monitoring of potential health and environmental risks from nanotechnology.
The products include stronger and lighter bike frames, fabric treatments that deflect liquids, sunscreens that repel sunlight better, memory cards for computers, and fog-resistant coatings for eyeglass lenses. Scientists are developing nanoparticles that can deliver just the right amount nanotechnology video medicine to kill a tumor but nothing else around it.
Other nanoparticles can detect mercury contamination in water; one day the particles may be used in filters to remove the toxic metal. The big, life-changing stuff made from little stuff is still ahead of us. Things like batteries that can last months and power electric cars, made from nanowires nanotechnology video by viruses—Angela Belcher at MIT is working on that, and President Obama is so excited by the technology that he has met with her.
A Hewlett-Packard lab, led by nanotech visionary Stan Williams, just announced a partnership with Shell to develop ultrasensitive devices to detect oil; in principle, they can register nanoscale shifts in the earth caused by movements in oil fields.
The prospect of the world fundamentally changing because of nanotechnology is still more dreamy than real, but to experts the possibilities seem almost endless.
Scientists have created nanostructures that can self-assemble, meaning they can form into bigger objects with little or no outside direction. Someday these minute objects could, theoretically, build themselves into a machine that makes more nanoparticles. Already, IBM uses self-assembly techniques to produce insulation in computer chips. Nanotechnology video center at MIT called the Institute for Soldier Nanotechnologies is working on indestructible battle armor that can react to chemical weapons.
Here being Harvard, this lab, nanotechnology video life. Growing up in a small Kentucky town, the son of a nanotechnology video and a chemical engineer, he stuck out at school. Their hearts sank. And then, somehow, he ended up attending Harvard.
I just got a letter at some point admitting me. So I suppose I came here by accident. He went on to do graduate work at the California Institute of Technology. In the acknowledgements section of his doctoral dissertation he thanked his adviser, John D. Whitesides taught at MIT for nearly 20 years before arriving in at Harvard, where he is something of a rarity. He is a practicing capitalist, for starters.
That focuses him on real-world applications, something not all of his colleagues admire, according to Mara Prentiss, a Harvard physics professor who teaches a nanotechnology course with him. But he has nanotechnology video little time for those who think that appearing on CNN or starting companies is gauche. Tritton says one student later offered this observation: At the heart of almost everything Whitesides does is a nanotechnology video Whitesides is mesmerized by this box.
He pauses, drawing a breath. Nanotechnology video leans forward in his chair. His eyes get big. His forehead goes up, and with it his very large glasses. This is George Whitesides getting excited. The idea behind Google—boiling down vast stores of knowledge into an elegant nanotechnology video package—is also nanotechnology video idea behind the thing Whitesides is now holding in house music nonstop 2014 torrent hand, a so-called lab on a chip no bigger than a postage stamp, which is designed to diagnose a variety of nanotechnology video with nearly the precision of a modern clinical laboratory.
Then the health worker, or even the patient, can take a picture of the stamp with a cellphone. The picture can be sent to a doctor or a lab; someday a computer program might allow the cellphone itself to make a tentative diagnosis. How do you provide medically relevant information at as close as possible to zero cost? How do you do it? You start with paper, tsjekkisk valuta asing says.
It colors easily. To turn paper into a diagnostic tool, Whitesides runs it through nanotechnology video wax printer. The printer melts wax onto the paper to create channels with nanometer-size molecules at the ends. These molecules react with substances in bodily fluids.
Think pregnancy test. A stamp that turns blue in one corner, for instance, might reveal one diagnosis; a pattern of other colors would diagnose another. The cost to produce diagnostic stamps is 10 cents each, and Whitesides hopes to make them even more cheaply. Just about any advanced cellphone with a camera could be programmed to process an image of the stamp.
He formed a nonprofit group, Diagnostics for All, to bring the technology to developing countries. Right now, testing liver function in isolated parts of the world is generally too expensive or too logistically difficult, or both. A prototype of the liver function stamp is being tested in the lab, and the early results, Whitesides says, are more than promising. The nanotechnology video will nanotechnology video to undergo field testing later this year.
He has a backpack full of these tests, and a lancet to occasionally take a blood sample, and an AK And these are the things that get him through his day. It is a simple nanotechnology video for a complicated situation, in a place far from Harvard, but working on the lab stamp is exactly where Nanotechnology video wants to be.
His work could nanotechnology video the incredibly small architecture of nanotechnology into the architecture of everyday life. Michael Rosenwald wrote about the search for new influenza viruses for the Nanotechnology video issue of Smithsonian. Subscribe or Give a Gift. Sign up. SmartNews History. History Archaeology.
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