NANO TECH
Get flash to fully experience Pearltrees
Nanotech breakthrough: get ready for graphene
The exciting one-atom thick super material can now be produced in ample quantities and high quality. Rapid improvements in nanotechnology are now expected. Technology improvements are about to get dramatically ultra-fast. Exciting sustaining and disruptive innovations are on the way for just about every digital appliance, from touchscreen tablet computing to solar cells, according to a Science Daily report . Graphene is a new form of carbon, one atom in thickness, extremely strong and highly conducive. High performance can be achieved with graphene transistors that can operate at much faster speeds and in higher heat conditions compared to current silicon chip technology.Doctors have miniaturized almost everything they need to send robots inside your brain's blood vessels to treat damaged tissue. But making a motor small enough to squeeze past blood cells has held things up. Now, engineers at Monash University in Australia have built a micromotor that brings bitty 'bots closer to reality.
latest science discovery | Popular Science
Fifteen small sundew plants perch on a window sill, collecting sunlight and eating meat in the lab of Mingjun Zhang on the University of Tennessee's Knoxville campus. Sundew plants are carnivores, consuming insects by capturing them with small adhesive balls on the ends of their tentacles. The tentacles and their adhesive properties may be nature's design for catching insects, but Zhang's research team hopes that one day this same adhesive can help attach your grandmother's replacement hip or your artificial knee without fear that your bodies will reject it. Post-doctoral researcher Scott Lenaghan explained that the idea behind this research at the Nano Bio-systems and Bio-mimetics Lab is to learn from biological principles and apply engineering along the way to develop an end product that uses these compounds and principles to advance technology. Finding organic biomaterials
National Science Foundation (NSF) Discoveries - The Nanotechnology of Sundew and English Ivy - US National Science Foundation (NSF)
Custom modifications of equipment are an honored tradition of the research lab. In a recent paper,* two materials scientists at the National Institute of Standards and Technology (NIST) describe how a relatively simple mod of a standard scanning electron microscope (SEM) enables a roughly 10-fold improvement in its ability to measure the crystal structure of nanoparticles and extremely thin films. By altering the sample position, they are able to determine crystal structure of particles as small as 10 nanometers. The technique, they say, should be applicable to a wide range of work, from crime scene forensics to environmental monitoring to process control in nanomanufacturing.
Hacking the SEM: Crystal Phase Detection for Nanoscale Samples
Nanotechnology | NCER | US EPA
Interagency Nanotechnology Implications Grantees Workshop – EPA, NSF, NIH/NIEHS, NIOSH and DOE - November 9 – 10, 2009 at the Embassy Suites Hotel, 4315 Swenson Street Las Vegas, NV 89119 [ Learn More ] Announcement of Intent to Issue an RFA on Fate and Transport of Engineered Nanomaterials in Coordination with the EC The EPA, NSF, USDA and NIOSH will issue a solicitation entitled "Increasing Scientific Data on the Fate, Transport and Behavior of Engineered Nanomaterials in Selected Environmental and Biological Matrices". The solicitation is expected to open on or before November 1, 2009 and will remain open for 90 days. The solicitation is being coordinated with the following call from the European Commission (EC) published on the 30th of July: [ Read More about The EC call reference ] Nanotechnology has both applications and implications for the environment.
Oak Ridge National Laboratory - ORNL experiments prove nanoscale metallic conductivity in ferroelectrics
ORNL researchers used piezoresponse force microscopy to demonstrate the first evidence of metallic conductivity in ferroelectric nanodomains. A representative nanodomain is shown in the PFM image above. ( hi-res image ) OAK RIDGE, Tenn., Jan. 9, 2012 — The prospect of electronics at the nanoscale may be even more promising with the first observation of metallic conductance in ferroelectric nanodomains by researchers at Oak Ridge National Laboratory.The chemical element carbon is one the most abundant elements in the universe. The structure of carbon lends itself to make millions of different compounds; it has four valence electrons, allowing it to bond with up to four other atoms at a time. In one form of carbon—graphite—each carbon atom is bonded to three other carbon atoms in a plane of hexagonal rings; the bonds within the plane are extremely strong, even stronger than in diamond. Starting in the late 20 th century, a great deal of research has been focused on fullerenes, a form of carbon that is similar in structure to the plane of hexagonal rings in a single layer of graphite, but formed into shapes such as hollow spheres (buckyballs) and cylinders (nanotubes). In particular, carbon nanotubes, which are essentially tiny tubes of carbon with a diameter of just about a nanometer (a billionth of a meter), have exceptional properties that seem to give them unlimited potential for use.
Teachers' Domain: A Nanotube Space Elevator
IIT scientists have said the homeopathic medicines work on the principle of nanotechnology. Homeopathic pills containing metals such as gold, copper and iron retain their potency even when diluted to a nanometre or one-billionth of a metre, states the IIT-Bombay research published in the latest issue of ‘Homeopathy’, a peer-reviewed journal. IIT-B’s chemical engineering department bought homeopathic pills from neighbourhood shops, prepared highly diluted solutions and checked these under powerful electron microscopes to find nanoparticles of the original metal. ”Certain highly diluted homeopathic remedies made from metals still contain measurable amounts of the starting material, even at extreme dilutions of 1 part in 10 raised to 400 parts (200C),” said Dr Jayesh Bellare from the scientific team.
IIT Researchers Prove Homeopathy is Based on Nanotechnology | Natural Health and Homeopathy News | Homeopathy = Hpathy
Are Homeopathic Treatments Based on Nanotechnology – A Review
German physician Samuel Hahnemann proposed Homeopathy in 1796. It is an alternative medicine involving highly diluted preparations. Homeopathic treatments are based upon the law of similars. If a diluted preparation is given to a healthy individual, certain symptoms will be observed.
Homeopathic Medicine is Nanopharmacology
Dana Ullman invites us to think of homeopathy as medicine at ultra-small doses, or nanopharmacology, which avoids the often debilitating side effects of conventional pharmacology. Western science has been marching towards the discovery of increasingly smaller particles of matter for the past centuries, from molecules and atoms to sub-atomic particles and quarks. Likewise, the evolution of technology has witnessed the miniaturisation of devices along with their increased capabilities. "Nanotechnology" has become the popular term to refer to the study and manufacture of devices of molecular dimensions, of the range of nanometers or one-billionth of a meter. Dr. Neal Lane, former director of the US National Science Foundation (NSF) said, "If I were asked for an area of science and engineering that will most likely produce the breakthrough of tomorrow, I would point to nanoscale science and engineering."A diagram of the electromagnetic spectrum, showing various properties across the range of frequencies and wavelengths The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation . [ 1 ] The "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object. The electromagnetic spectrum extends from low frequencies used for modern radio communication to gamma radiation at the short- wavelength (high-frequency) end, thereby covering wavelengths from thousands of kilometers down to a fraction of the size of an atom . It is for this reason that the electromagnetic spectrum is highly studied for spectroscopic purposes to characterize matter. [ 2 ] The limit for long wavelength is the size of the universe itself, while it is thought that the short wavelength limit is in the vicinity of the Planck length , [ 3 ] although in principle the spectrum is infinite and continuous .
Electromagnetic spectrum - Wikipedia, the free encyclopedia
Literature & Poetry Sites
Nanometre - Wikipedia, the free encyclopedia
A nanometre ( American spelling : nanometer ; symbol nm ) is a unit of length in the metric system , equal to one billionth of a metre . The name combines the SI prefix nano- (from the Ancient Greek νάνος , nanos , "dwarf") with the parent unit name metre (from Greek μέτρον , metrοn , "unit of measurement"). The nanometre is often used to express dimensions on the atomic scale: the diameter of a helium atom, for example, is about 0.1 nm, and that of a ribosome is about 20 nm. The nanometre is commonly used to specify the wavelength of electromagnetic radiation near the visible part of the spectrum : visible light, in particular, ranges from 400 to 700 nm.Block diagram of atomic force microscope Atomic force microscopy (AFM) or scanning force microscopy (SFM) is a very high-resolution type of scanning probe microscopy , with demonstrated resolution on the order of fractions of a nanometer , more than 1000 times better than the optical diffraction limit . The precursor to the AFM, the scanning tunneling microscope , was developed by Gerd Binnig and Heinrich Rohrer in the early 1980s at IBM Research - Zurich , a development that earned them the Nobel Prize for Physics in 1986. Binnig, Quate and Gerber invented the first atomic force microscope (also abbreviated as AFM) in 1986. The first commercially available atomic force microscope was introduced in 1989.