Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News Biofilms—the eradication has begun Have you ever heard of biofilms? They are slimy, glue-like membranes that are produced by microbes, like bacteria and fungi, in order to colonize surfaces. They can grow on animal and plant tissues, and even inside the human ... UN says world population will reach 9.8 billion in 2050 India's population is expected to surpass China's in about seven years and Nigeria is projected to overtake the United States and become the third most populous country in the world shortly before 2050, a U.N. report said ... Record UK rainfall in winter 2013-14 caused by tropics, stratosphere and climate warming New research has revealed the causes of the UK's record rainfall and subsequent flooding during the 2013-14 winter. Rare US total solar eclipse excites Americans coast-to-coast For the first time in almost a century the United States is preparing for a coast-to-coast solar eclipse, a rare celestial event millions of Americans, with caution, will be able to observe.
Small world by Ralph C. Merkle Xerox PARC 3333 Coyote Hill Road Palo Alto, CA 94304 merkle@xerox.com This is an extended web version of the article published in the Feb/Mar 1997 issue of MIT Technology Review. This version has greater technical detail and embedded links. Introduction Manufactured products are made from atoms. Since we first made stone tools and flint knives we have been arranging atoms in great thundering statistical heards by casting, milling, grinding, chipping and the like. That's changing. Build products with almost every atom in the right place. One warning: in contrast to the useage in this article some researchers use the word "nanotechnology" to refer to high resolution lithographic technology while others use it to refer to almost any research where some critical size is less than a micron (1,000 nanometers). There are two main issues in nanotechnology: What might molecular manufacturing systems look like? The advantages ofnanotechnology The advantages of positional control
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nano tech 2012 International Nanotechnology Exhibition & Conference News ::: Columbia Engineers Prove Graphene is Strongest Material July 21, 2008 Columbia Engineers Prove Graphene is the Strongest Material Research scientists at Columbia University’s Fu Foundation School of Engineering and Applied Science have achieved a breakthrough by proving that the carbon material graphene is the strongest material ever measured. Graphene holds great promise for the development of nano-scale devices and equipment. Until now, graphene’s estimated strength, elasticity and breaking point were based on complex computer modeling theories. “Our team sidestepped the size issue by creating samples small enough to be defect-free,” said Columbia Professor Jeffrey Kysar. The studies were conducted by postdoctoral researcher Changgu Lee and graduate student Xiaoding Wei, in the research groups of mechanical engineering professors Kysar and James Hone. “Our research establishes graphene as the strongest material ever measured, some 200 times stronger than structural steel,” Hone said.
Tiny brains created from SKIN could lead to cures for disorders like schizophrenia and autism Scientists used stem cells to grow 3D tissue that mimics a brainThe cells displayed an organisation similar to that seen in the early stages of the developing human brain's cerebral cortex - also known as grey matterThe miniature brains helped the researchers identify a defect that affects normal brain development in microcephaly leading to a smaller brainThe findings could eventually lead to treatments for other neurological disorders By Emma Innes Published: 18:19 GMT, 28 August 2013 | Updated: 00:00 GMT, 29 August 2013 A ‘brain in a bottle’ has been grown by stem cell scientists who hope it will lead to treatments for neurological and mental diseases. The ‘organoids’, three to four millimetres across, have a structure similar to that of an immature human brain. The goal was to produce a biological tool that can be used to investigate the workings of the brain, better understand brain diseases, and test new drugs. ‘These structures are not just peculiar lab artefacts.
Tiny buckyballs squeeze hydrogen like giant Jupiter (3/21/2008) Carbon cages can hold super-dense volumes of nearly metallic hydrogen Hydrogen could be a clean, abundant energy source, but it's difficult to store in bulk. In new research, materials scientists at Rice University have made the surprising discovery that tiny carbon capsules called buckyballs are so strong they can hold volumes of hydrogen nearly as dense as those at the center of Jupiter. The research appears on the March 2008 cover of the American Chemical Society's journal Nano Letters. "Based on our calculations, it appears that some buckyballs are capable of holding volumes of hydrogen so dense as to be almost metallic," said lead researcher Boris Yakobson, professor of mechanical engineering and materials science at Rice. The Department of Energy has devoted more than $1 billion to developing technologies for hydrogen-powered automobiles, including technologies to cost-effectively store hydrogen for use in cars. Comments: Leave a Reply:
Easy and effective therapy to restore sight: Engineered virus will improve gene therapy for blinding eye diseases Researchers at UC Berkeley have developed an easier and more effective method for inserting genes into eye cells that could greatly expand gene therapy to help restore sight to patients with blinding diseases ranging from inherited defects like retinitis pigmentosa to degenerative illnesses of old age, such as macular degeneration. Unlike current treatments, the new procedure is quick and surgically non-invasive, and it delivers normal genes to hard-to-reach cells throughout the entire retina. Over the last six years, several groups have successfully treated people with a rare inherited eye disease by injecting a virus with a normal gene directly into the retina of an eye with a defective gene. "Sticking a needle through the retina and injecting the engineered virus behind the retina is a risky surgical procedure," said David Schaffer, professor of chemical and biomolecular engineering and director of the Berkeley Stem Cell Center at UC Berkeley.
Nanotechnology Nanotechnology ("nanotech") is the manipulation of matter on an atomic, molecular, and supramolecular scale. The earliest, widespread description of nanotechnology[1][2] referred to the particular technological goal of precisely manipulating atoms and molecules for fabrication of macroscale products, also now referred to as molecular nanotechnology. A more generalized description of nanotechnology was subsequently established by the National Nanotechnology Initiative, which defines nanotechnology as the manipulation of matter with at least one dimension sized from 1 to 100 nanometers. This definition reflects the fact that quantum mechanical effects are important at this quantum-realm scale, and so the definition shifted from a particular technological goal to a research category inclusive of all types of research and technologies that deal with the special properties of matter that occur below the given size threshold. Origins[edit] Comparison of Nanomaterials Sizes
Understanding Nanomedicine: An Infographic Nanomedicine is a field of medical science that involves the use of objects and substances at the molecular level. Basically, it is the application of nanotechnology to medicine. Currently, nanomedicine is used for nanoparticle drug delivery where medicine is delivered to a specific area of the body through a nanosized container or vessel. Tiny Nanomotors Successfully Placed Inside Live Human Cells For The First Time Scientists have successfully placed tiny synthetic motors in live human cells through nanotechnology. Using ultrasonic waves as the power source and magnets to steer, the nanomotors can zip around the cell and perform tasks. The main obstacle for placing nanomotors in cells is the power source. The researchers at Penn State University and at Weinberg Medical Physics found that ultrasonic waves can be used to power these motors and that magnetic fields can be used to steer them. The image above is that of a HeLa cell with some gold-ruthenium nanomotors inside it. Bionanotechnology is fast becoming popular in medical and scientific research. For the first time, a team of chemists and engineers at Penn State University have placed tiny synthetic motors inside live human cells, propelled them with ultrasonic waves and steered them magnetically. The researchers' findings will be published in Angewandte Chemie International Edition on 10 February 2014. Video: Nanomotors in Cells