Related topics: carbon nanotube , nanotechnology
Nanometre
hideA nanometre (American spelling: nanometer; symbol nm) (Greek: νάνος, nanos, "dwarf"; μέτρον, metrοn, "unit of measurement") is a unit of length in the metric system, equal to one billionth of a metre (i.e., 10-9 m or one millionth of a millimetre).
It is one of the more often used units for very small lengths, and equals ten Ångström, an internationally recognized non-SI unit of length. It is often associated with the field of nanotechnology and the wavelength of light. Formerly, millimicron (symbol mµ) was used for the nanometre. The symbol µµ has also been used .
It is also the most common unit used to describe the manufacturing technology used in the semiconductor industry. It is the most common unit to describe the wavelength of light, with visible light falling in the region of 400–700 nm. The data in compact discs is stored as indentations (known as pits) that are approximately 100 nm deep by 500 nm wide. Reading an optical disk requires a laser with a wavelength 4 times the pit depth -- a CD requires a 780 nm wavelength (near infrared) laser, while the shallower pits of a DVD requires a shorter 650 nm wavelength (red) laser, and the even shallower pits of a Blu-ray Disc require a shorter 405 nm wavelength (blue) laser.
For more information about Nanometre, read the full article at
Wikipedia.
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News tagged with nanometers
High, not flat: nanowires for a new chip architecture
Feb 02, 2010 |
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Nowadays, a myriad of silicon transistors are responsible to pass on the information on a microchip. The transistors are arranged in a planar array, i.e. lying flat next to each other, and have shrunk down ...
Nano for the senses
Nanotechnology / Nanomaterials
Feb 02, 2010 |
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Pin-sharp projections, light that's whiter than white, varnishes that make sounds if the temperature changes: at nano tech 2010 in Tokyo, Fraunhofer researchers present nanotechnology that is a veritable feast for the senses.
CT with Nanotubes for People and Baggage Scans
Feb 02, 2010 |
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Researchers from Siemens are investigating the use of small, fast X-ray sources based on nanotubes.
Engineers develop cancer-targeting nanoprobe sensors
Nanotechnology / Bio & Medicine
Feb 01, 2010 |
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(PhysOrg.com) -- Scientists at UC Berkeley have created smart nanoprobes that may one day be used in the battle against cancer to selectively seek out and destroy tumor cells, as well as report back on the ...
Dry printing of nanotube patterns to any surface could revolutionize microelectronics
Nanotechnology / Nanomaterials
Jan 22, 2010 |
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(PhysOrg.com) -- Watch a gecko walk up a wall. It defies gravity as it sticks to the surface no matter how smooth it appears to be.
Physicists develop 3D metamaterial nanolens that achieves super-resolution imaging
Jan 18, 2010 |
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(PhysOrg.com) -- A research team from Northeastern University has developed a new nanolens that can beat the diffraction limit to achieve so-called super-resolution imaging, better than can be achieved by current technology. ...
Giant Rydberg atoms confined in a micro-glass cell
Jan 14, 2010 |
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Rydberg atoms are highly sensitive atoms, as one electron is only loosely bound. Compared to 'normal' atoms which are one tenth of a nanometer in size those giant atoms are ~100 nanometers large. Due to their sensitivity ...
Samsung's new flash chips for mobile devices
Jan 14, 2010 |
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(PhysOrg.com) -- Samsung Electronics has announced two new flash chip storage devices for mobiles: a removable 32-Gbyte micro SD (secure digital) card and a 64-Gbyte moviNAND flash memory module. Both are ...
U.S. faces widening information gap on nanotechnology
Nanotechnology / Bio & Medicine
Jan 12, 2010 |
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(PhysOrg.com) -- As the global nanotechnology industry continues to produce cutting-edge consumer products, the scientific community is leaving a key part of the U.S. public behind when sharing knowledge of this new field ...
Intel rolls out new chips (w/ Video)
Jan 08, 2010 |
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Intel Corp. rolled out new computer chips Thursday that highlight the company's lead over Advanced Micro Devices Inc. in its ability to shrink the circuitry inside its processors.
Nanoscience goes 'big': Discovery could lead to enhanced electronics
Jan 07, 2010 |
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Nanoscience has the potential to play an enormous role in enhancing a range of products, including sensors, photovoltaics and consumer electronics. Scientists in this field have created a multitude of nano ...
'Ferropaper' is new technology for small motors, robots
Nanotechnology / Nanomaterials
Jan 05, 2010 |
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(PhysOrg.com) -- Researchers at Purdue University have created a magnetic "ferropaper" that might be used to make low-cost "micromotors" for surgical instruments, tiny tweezers to study cells and miniature ...
Researchers develop anti-cancer 'nano cocktail'
Nanotechnology / Bio & Medicine
Jan 04, 2010 |
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(PhysOrg.com) -- A team of researchers in California and Massachusetts has developed a "cocktail" of different nanometer-sized particles that work in concert within the bloodstream to locate, adhere to and ...
Digital Quantum Battery Could Boost Energy Density Tenfold
Dec 22, 2009 |
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(PhysOrg.com) -- Physicists theorize that quantum phenomena could provide a major boost to batteries, with the potential to increase energy density up to 10 times that of lithium ion batteries. According to ...
The next medical frontier: nano-surgery
Nanotechnology / Bio & Medicine
Dec 21, 2009 |
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(PhysOrg.com) -- Engineering professor's nanorobot could be performing non-invasive surgical procedures on patients with tumors within the next decade.
