Showing posts with label nanotechnology. Show all posts
Showing posts with label nanotechnology. Show all posts

8/18/2008

The brain against the microchip

Over the past ten years, microchips and personal computers have taken a turn of 180 degrees to our world and their schemes. The machines that worked before now also know and believe the man threatens to become an apprentice sorcerer.
Will we be able to dominate the situation in the future? The computer poses a serious challenge.

Often said that often the reality surpasses fiction, referring to any circumstance in all sorts of terrain. However, the field of computer engineering, which paradoxically has always been the exception that proves the rule, which is the biggest surprises us.

The human inventions in the field of computers and artificial intelligence have a latent power immensely so great that everything that has been written or write on issues of science fiction is reduced to a nimiedad.

The future of computers, applied to all fields that surround the man, is so extensive that are not outlined its limits. Only could be compared with the dimensions of the cosmos, because our brains still ignore the future profits of thinking machines.

4/20/2008

Nanotechnology - micro-machines are integrated to the medicine

The most original thing that afford the future is almost invisible. You are about machines that measure thousandth of millimeters. The American Simple company has already built a microprocessor, mounted on silicon plaquitas that are wired to a minuscule motor able to make turn trains a smaller hundred of times that an acarid of the powder to hundred d emiles of times per minute.

The gurus and fanatic of this technology they assure that inside little devices like these will be devoted to patrol for the sanguine torrent, perhaps helping to the white globules to delete invasive microbes.

More realistic they are the developed blood pressure sensors for Lucas Nova Sensor. They are membranes of 700 microns of side, wired to a minuscule padded catérer of saline solution that are inserted in the blood. When the pressure loses temper, the catérer the thing, the membrane stretches out or you contract and an electrical signal is emitted.

4/13/2008

Explanation of the Nanotechnology

The word "nanotechnology" is used extensively to define the sciences and technical that are applied to the a nanoescala level, this is some measures extremely petty "nanos" that allow to work and to manipulate the molecular structures and your atoms. In synthesis it would take us to the possibility of manufacturing materials and machines starting from the reordenamiento of atoms and molecules. The development of this discipline takes place starting from Richard's proposals Feynman (Brief chronology - history of the nanotechnology).

The best definition of Nanotechnology that we have found is this: The nanotechnology is the studio, design, creation, synthesis, manipulation and application of materials, apparatuses and functional systems through the control of the matter to nano climb, and the exploitation of phenomena and estates of the matter to nano climb.

When the matter is manipulated to the so minuscule scale of atoms and molecules, you demonstrate phenomena and completely new estates. Therefore, scientists use the nanotechnology to create materials, apparatuses and novel and not very expensive systems with unique estates


You interest us, more than your concept, what represent potentially inside the group of investigations and current applications whose purpose is to create new structures and products that would have a great impact in the industry, the medicine (nanomedicina), etc.

This new structures accurately atomic, such as nanotubos of charcoal, or petty instruments for the interior of the human body can insert us in a new era, just as Charles it points out Vest (ex-president of MIT). The advances nanotecnológicos would play this way the society of the knowledge with multitude of developments with a great repercussion in your entrepreneurial and social instrumentation.

The nanociencia is bound in great measure from the decade of the 80 with Drexler and your contributions to the molecular" "nanotechnology, this is, the nanomáquinas construction made of atoms and that they are able to build themselves other molecular components. From then on Eric Drexler (personal webpage), is considered one of the biggest visionaries on this topic. Already in 1986, in your book "Engines of creation" inserted the promises and hazards of the molecular manipulation. Currently Foresight presides Institute.

The father of the "nanociencia", Richard is considered Feynman, prize Nóbel of Physics, who in 1959 you intended to manufacture products based on a reordenamiento of atoms and molecules. In 1959, the great physique wrote an article that analyzed how the computers working with individual atoms could consume very little energy and to procure astonishing speeds.

A great consent exists in that the nanotechnology will take us to a second industrial revolution in the XXI century just as you announced some years ago, Charles Vest (ex-president of MIT).

You will suppose numerous advances for many industries and new materials with estates extraordinary (to develop stronger materials that the steel but with only ten percent the weight), new computer applications with incredibly quicker components or molecular sensors able to detect and to destroy cancer-causing cells in the parts more dedlicadas of the human body as the brain, among other many applications.

We can say that many progress of the nanociencia will be among the technological big advances that you/they will change the world.

3/06/2008

Artificial retina will allow to see to blind

Recently he commented the development of a bionic contact len that allowed to raise the vision of the focused objects. Now, we meet with a more interesting notice, a team of Japanese scientists of the University of Osaka and the Institute Nara of Science and technology they have developed a system of artificial vision that make arrive visual signals to the brain, what would allow to undelete the mediating vision this blind technical people.

The device consists on some glasses of sun that take incorporate some chambers of filming of images and in some electrodes that are implanted in the eye with a not very invasive surgery. Each electrode has a similar resolution to that of a píxel of digital image, and the scientists hope to end up implanting up to 100 electrodes in some years, what would suppose that a blind man could distinguish objects with articulation to 30 centimeters of distance.

Also, the system includes the implant in the eye of a game of electrodes of four square millimeters that you/they boost the optical ledge. Once the signals reach the brain, the patient can see again. The quality of the vision procured by the system depends on the number of electrodes that you/they are implanted in the eye, so that we make ourselves an idea, each one of these electrodes is comparable with a píxel of the digital picture. The implanted electrodes are floppy thanks to the use of chips of integrated circuits.

The idea of the investigators is that your invention you can market in 2012, for the moment, this year, the plans are to implant, with surgery, 49 electrodes of the third generation of the system in the eye of a patient, with the objective of improving the effectiveness of the device so that you allow to see something more than you shine.

They measure the conductivity of the DNA

The first question before this notice is... For what reason? and the investigators answer us that thanks to this they will be been able to detect mutations.

To achieve it, they have wired the DNA between two nanotubos of carbon, like one can see in the image, and they have been able to measure the capacity of the molecule to take electricity circulating. According to the investigators, a single base chemistry of the DNA can change the submitted of this drastically, this way, they could be identified linked illnesses quickly to the mutations.

In spite of everything, the measurement of the electric states of DNA has been difficult because the molecule and your riders to the electrodes spread to be very brittle. But in the new studio, Colin Nuckolls, chemistry professor in the University of Columbia, in New York and Jacqueline Barton, chemistry professor in Caltech, they were able to develop a method for the biosafety of the molecules connecting alone to the walls of the nanotubos of carbon that act as the electrodes in a minuscule circuit, the links are this way, the quite robust ones as to resist electric enormous fields.

The system is still very novel, and they will have years to pass to demonstrate your actual effectiveness and your practical applications.

2/06/2008

Solar panels that work the 24 hours

The dream of environmentalist and users that search alternatives to cheapen costs and to guarantee electricity, still during the cuts, it can be a reality. And everything thanks to the development of a group of investigators from National Idaho Laboratory, in USA.

Since you began to use for the electricity generation, the solar energy has been an alternative font whose use has gone growing in an exponential way. And here we have already seen different alternatives, as the impelled one for Google.

The problem is that the production of solar facilities is still something expensive, what end up reducing your market to a niche for some few ones. For if you were little, your strength is quite reduced, what involve that they are not too many the devices that can be fed this way: in consequence the depreciation of this type of investments is more dilatory.

But that can be to change thanks to Steven's work Novack, of National Idaho Labortory that affirm book credit desarollado a new type of solar panels. Thanks to the nanotechnology, the surface of these panels is printed with minuscule nano antennas that can capture the infrared radiation that are plentiful during the day but that, still during the night, you are present.

This would allow to obtain solar energy the 24 hours, something that will surely contribute to make much more income-producing the facilities of this type. And not alone that, but rather the grade of energy absorption achieved this way climbs until 80%, against 40% that are the habitual one with the solar fabricated panels with silicon. If that wasn't enough, the method invented by Novack will allow the production of solar panels that you/they can bend, reverting them extremely practical for your transportation and easy installation.

The difficult only aspect up to now is the one of being able to transform the energy obtained in electricity, since the nano antennas has each a very little strength and your value is given on the whole by your work. Certainly that in this aspect they are working the scientists. When they have solved it finally we will be able to have solar really actual and economic panels.