The Nanogirl News~
- From: "Gina Miller" <nanogirl@xxxxxxxxxxx>
- Date: Thu, 03 Aug 2006 05:06:19 -0000
Nanogirl News
August 2, 2006
Carbon nanotubes offer 'green' technology for perchlorate removal.
Researchers at Pacific Northwest National Laboratory have demonstrated a
new, environmentally friendly process for treating water contaminated by
perchlorate, a toxic chemical that has been found in drinking water in 35
states.
(Physorg 7.25.06) http://www.physorg.com/news73064933.html
Living with Nanotubes. Carbon nanotubes are stronger than steel and 50,000
times finer than human hair. Unfortunately they kill cells, which
discourages researchers who'd like to use them to diagnose and treat
disease. Now scientists have created a mimic of natural mucin that can make
carbon nanotubes safe for living things. (Berkeley Lab 7.26.06)
http://www.lbl.gov/Science-Articles/Archive/sabl/2006/Jul/01.html
Nano World: Nanofibers for heart cells. The heart function of rats following
heart attacks can be improved using heart cells wrapped in organic fibers
only nanometers or billionths of a meter long that are impregnated with
growth hormones, experts tell UPI's Nano World. (Physorg 5.12.06)
http://www.physorg.com/news66654477.html
Nanotechnology being used to improve biocompatibility of human prosthetics
and implants. As populations of the world age the current trend is that
people are not slowing down in their later years. The desire for increased
activity among the elderly also means increased demands on medical
researchers to come up with better ways to keep them active. (A2Z 8.2.06)
http://www.azom.com/details.asp?newsID=6210
Gold nanoparticles could improve antisense cancer drugs. In the fight
against cancer, antisense drugs, which prevent genes from producing harmful
proteins such as those that cause cancer, have the promise to be more
effective than conventional drugs, but the pace of development of these new
drugs has been slow. Using gold nanoparticles combined with DNA, scientists
at Northwestern University now have demonstrated a new method for developing
antisense drugs that outperform conventional antisense agents. The findings
will be published May 19 in the journal Science. (EurekAlert 5.18.06)
http://www.eurekalert.org/pub_releases/2006-05/nu-gnc051606.php
CMU professor says nanotechnology study may lead to tinier computers. Ever
had the urge to slip your 500-gigabyte desktop computer into your back
pocket? Koblar Alan Jackson is making no promises, but the Central Michigan
University professor's research in nanophotonics may help lay the groundwork
for future generations of computer downsizing. Think technology that one day
could make the iPod's microcircuits resemble the oversize vacuum tubes in
your grandfather's TV. (CMU 8.2.06)
http://www.news.cmich.edu/news/index.asp?id=1448
World's tiniest test tubes get teensiest corks. Now all they need is a
really, really small corkscrew. Like Lilliputian chemists, scientists have
found a way to "cork" infinitesimally small nano test tubes. The goal is a
better way to deliver drugs, for example, for cancer treatment. Scientists
want to fill the teeny tubes with drugs and inject them into the body, where
they will seek diseased or cancerous cells, uncork and spill their
therapeutic contents in the right place.
(nanotechwire 5.10.06) http://www.nanotechwire.com/news.asp?nid=3291
Sandia work launched on space shuttle shows live cells influence growth of
nanostructures. Implications for sensors, tuberculosis modeling, cell
preparation, surgical implant safety. Far above the heads of Earthlings,
arrays of single-cell creatures are circling Earth in nanostructures. The
sample devices are riding on the International Space Station (courtesy of
Sandia National Laboratories and the University of New Mexico, NASA and US
Air Force) to test whether nanostructures whose formations were directed by
yeast and other single cells can create more secure homes for their
occupants-even in the vacuum and radiation of outer space-than those created
by more standard chemical procedures. (Brightsurf 7.24.06)
http://www.brightsurf.com/news/headlines/25502/Sandia_work_launched_on_space_shuttle_shows_live_cells_influence_growth_of_nanostructures.html
Vertically Oriented Nanoelectronics. Engineers at Purdue University have
developed a technique to grow individual carbon nanotubes vertically on top
of a silicon wafer, a step toward making advanced electronics, wireless
devices and sensors using nanotubes by stacking circuits and components in
layers. The technique might help develop a method for creating "vertically
oriented" nanoelectronic devices, the electronic equivalent of a skyscraper,
said Timothy S. Fisher, an associate professor of mechanical engineering who
is leading the work with Timothy D. Sands, the Basil S. Turner Professor of
Engineering. (Technologynewsdaily Aug. 06)
http://www.technologynewsdaily.com/node/3959
Blood-compatible nanoscale materials possible using heparin. Researchers
from Rensselaer Polytechnic Institute have engineered nanoscale materials
that are blood compatible using heparin, an anticoagulant. The heparin
biomaterials have potential for use as medical devices and in medical
treatments such as kidney dialysis. (Rensselaer 5.4.06)
http://news.rpi.edu/update.do?artcenterkey=1523&setappvar=page(1)
Reflections of an Atom. Physicists have developed lenses and prisms to
manipulate beams of atoms and molecules as though they were beams of light.
Now, in the 21 July PRL, a team reports on their design and testing of an
atomic mirror. Before reflection, the system must put the atoms into a
highly excited state. Almost any atom or molecule can be excited into one of
these states, so the mirror along with other components could lead to new
experiments on the wave nature of atoms, as well as improved devices like
gyroscopes or atomic clocks, researchers say. (PRL 8.1.06)
http://focus.aps.org/story/v18/st3
Rice scientists attach motor to single-molecule car. In follow-on work to
last year's groundbreaking invention of the world's first single-molecule
car, chemists at Rice University have produced the first motorized version
of their tiny nanocar. The research is published in the April 13 issue of
the journal Organic Letters. (EurekAlert 4.12.06)
http://www.eurekalert.org/pub_releases/2006-04/ru-rsa041206.php
Nanodogs could sniff out explosives in terror battle. Welsh scientists have
developed a sensor they call a nanodog which is capable of 'sniffing' out
microscopic low levels of explosives. It is hoped the technology will be
used in the fight against terrorism, with airports and governments already
showing an interest. The nanodog was developed by a team from the University
of Wales, Bangor's school of chemistry, led by Professor Maher Kalaji.
(Small Times 7.28.06)
http://www.smalltimes.com/document_display.cfm?document_id=11931
Nanogenerators Convert Mechanical Energy To Electricity For Self-powered
Devices. Researchers have developed a new technique for powering
nanometer-scale devices without the need for bulky energy sources such as
batteries. By converting mechanical energy from body movement, muscle
stretching or water flow into electricity, these "nanogenerators" could make
possible a new class of self-powered implantable medical devices, sensors
and portable electronics.
(ScienceDaily 4.16.06)
http://www.sciencedaily.com/releases/2006/04/060414011916.htm
Carbon nanotubes enter Tour de France. If Floyd Landis wins the three-week
Tour de France, it will be a victory for nanotechnology too. Landis, the
leader of the Phonak team and one of the pre-race favorites, rides a bike
that's been enhanced with carbon nanotubes. Although nanotubes have
previously been sprinkled into cranks and other components to reduce weight
and provide additional strength, the bikes ridden by the Phonak team have
nanotubes swirled into the frame--a first, according to their Swiss
manufacturer, BMC. (Cnet 7.7.06)
http://news.com.com/Carbon+nanotubes+enter+Tour+de+France/2100-11395_3-6091347.html
Nanotube membranes offer possibility of cheaper desalination. A nanotube
membrane on a silicon chip the size of a quarter may offer a cheaper way to
remove salt from water. Researchers at Lawrence Livermore National
Laboratory have created a membrane made of carbon nanotubes and silicon that
may offer, among many possible applications, a less expensive
desalinization. The nanotubes, special molecules made of carbon atoms in a
unique arrangement, are hollow and more than 50,000 times thinner than a
human hair. Billions of these tubes act as the pores in the membrane. (LLNL
5.18.06)
http://www.llnl.gov/pao/news/news_releases/2006/NR-06-05-06.html
World's Smallest Bit of Nylon. A US scientist has made the world's smallest
fragment of nylon and hopes to make more by harnessing the self-assembling
properties of DNA, ABC wrote. Professor Nadrian Seeman of New York
University says the long-term plan is to make ultra strong nylon. "The same
properties of DNA that make it such a wonderful genetic material can be
utilized in other ways," says Seeman, a pioneer of what is called structural
DNA nanotechnology. (Irandaily 8.2.06)
http://www.iran-daily.com/1385/2627/html/science.htm#s163947
Just one nanosecond: Clocking events at the nanoscale. As scientists and
engineers build devices at smaller and smaller scales, grasping the dynamics
of how materials behave when they are subjected to electrical signals, sound
and other manipulations has proven to be beyond the reach of standard
scientific techniques. But now a team of University of Wisconsin-Madison
researchers has found a way to time such effects at the nanometer scale, in
essence clocking the movements of atoms as they are manipulated using
electric fields. (U of Wisconsin - Madison 5.18.06)
http://www.news.wisc.edu/12614.html
Scientists Image 'Magnetic Semiconductors' On The Nanoscale. In a
first-of-its-kind achievement, scientists at the University of Iowa, the
University of Illinois at Urbana-Champaign and Princeton University have
directly imaged the magnetic interactions between two magnetic atoms less
than one nanometer apart (one billionth of a meter) and embedded in a
semiconductor chip. (Science Daily 7.26.06)
http://www.sciencedaily.com/releases/2006/07/060726180353.htm
Add Nanotubes and Stir-With the Right Force. Polymer scientists at the
National Institute of Standards and Technology have some stirring results to
share with researchers and companies developing new, advanced composite
materials with carbon nanotubes-mix carefully. In a paper for Physical
Review Letters,* they explain how the amount of force applied while mixing
carbon nanotube suspensions influences the way the tiny cylinders ultimately
disperse and orient themselves.
(nanotechwire.com 7.23.06) http://www.nanotechwire.com/news.asp?nid=3524
Nano Probe May Open New Window Into Cell Behavior. Georgia Tech invention
captures cell properties and biochemical signals in action. Georgia Tech
researchers have created a nanoscale probe, the Scanning Mass Spectrometry
(SMS) probe, that can capture both the biochemical makeup and topography of
complex biological objects in their normal environment - opening the door
for discovery of new biomarkers and improved gene studies, leading to better
disease diagnosis and drug design on the cellular level. The research was
presented in the July issue of IEE Electronics Letters. (GIT 7.24.06)
http://www.gatech.edu/news-room/release.php?id=1056
Nano World: Nano helps keep cells alive. Encasing living cells in networks
of silica and fatty layers only nanometers or billionths of a meter in size
could help keep them alive longer for use in novel chemical factories or
sensors, experts tell UPI's Nano World. Scientists are tinkering with
integrating cells into devices. However, the usual method of doing so
involves encapsulating them in silica gel, but when these dry out, stresses
are generated that kill cells. Materials scientist Jeff Brinker at Sandia
National Laboratory and the University of New Mexico in Albuquerque and
colleagues instead used live cells to direct the formation of scaffolds that
would help keep them alive. (UPI 7.26.06)
http://www.upi.com/Hi-Tech/view.php?StoryID=20060721-090232-7030r
Researchers at Rice University's Laboratory for Nanophotonics (LANP) today
unveiled the "nanoegg," the latest addition to their family ultrasmall,
light-focusing particles. A cousin of the versatile nanoshell, nanoeggs are
asymmetric specks of matter whose striking optical properties can be
harnessed for molecular imaging, medical diagnostics, chemical sensing and
more. Nanoeggs are described in the July 18 issue of the Proceedings of the
National Academy of Sciences.
(Rice 7.20.06) http://www.media.rice.edu/media/NewsBot.asp?MODE=VIEW&ID=8658
Gina "Nanogirl" Miller
Nanotechnology Industries
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Email: nanogirl@xxxxxxxxxxx
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