18/07/2011

The relation of nanotechnology ,Maya and Nanoart

It uses nanotechnology for the centuries. A good example is the Maya Blue, a blue pigment is first in the ninth century by the Maya and Aztecs. It is a hybrid compound consisting of particles of organic material (indigo, derived from the leaves of the indigo) and inorganic (a silicate layer, which in some clays). The result is a substance very resistant to the passage of time, weather, and even most chemical solvents and acids. The organic dyes are generally degraded very low resistance and easy, but in this case, their Dell Inspiron Mini 1012 Battery association with an inorganic material is a "protection".

The cut was made to the Lycurgus C in the fourth century in Rome. At daybreak the mythological scene is represented in green and opaque. If it glows red from the inside out and becomes translucent. Responsible for these color changes, nanoparticles of gold and silver Dell Studio 17 Battery  will be produced.

Without knowing it, nanotechnology

Another interesting example of the use of nanotechnology in old age is the color of the windows of cathedrals. The colors were obtained by heating and cooling the glass in a controlled manner. What is unknown to the Middle Ages through this process that is achieved, the size of the crystals on the nanometer scale and thus to change Asus UX50 Battery its color.

Even during the Middle Ages, the famous ceramics of Manises (Valencia), a formula from the Andalusian Muslims who succeeded importing the highly praised the metallic luster of its parts. This recetaincluía nanoparticles of silver and copper.

In Damascus steel forged from the Middle Ages, the most famous swords, cut hard, hard, and yet in a position with his razor, hair loss. Recent studies have the presence of carbon nanotubes in their composition, prepared by the methods used reveals forging. These nanotubes Asus UX50V Battery are recently discovered properties of nanoparticles to exceptional hardness. The difference in this old nanotechnology today is that we now have the tools to see what happens on the nanometer scale and the forecasting rules, the materials we use instead of study design and enables the development of error.

The kick-off

The beginning of the conscious thought of the benefits of nanotechnology developments are often attributed to Richard Feynman, Nobel, who predicted in 1959, in a lecture titled "There's plenty of room at the end," the first ideas behind nanotechnology. "I want to describe an area," Feynman began, "in which very little has been done, but done in principle in which many Dell XPS M1330 Battery things can be.

Also the most important thing that could have many technological applications. What I want is to address the problem of manipulation and control of objects in a small way "..." What are the properties of materials, if we really wanted we? I do not know exactly what was coming, but I have no doubt that if controlásemos placing objects on a small scale, would give access to a variety of properties, the existing materials Dell Studio 1536 Battery and we could have to do many things. "

But while R. Feynman had a vision as sharp, take decades to be capable of tools that make us to manipulate and observe matter to allow the develop nanoscale. For example, it was not until 1981 that G. Binning and H. Rohrer, a kind of microscope, called the STM to see that he and moving atoms for the first time. In 1986 he received the Nobel Prize for their Dell Studio 1735 Battery discovery.

Nanoart

The image of this little world again that we begin to explore, are very suggestive in terms of aesthetics and communication. All these possibilities, the exhibition "A walk through the visit of nano" at the Ethnography Museum of Castilla y León Zamora from 16 June-24. July, you can discover Dell XPS M1730 Battery for themselves the artistic proposals.

 

15:34 Publié dans Science | Lien permanent | Commentaires (0)

13/07/2011

How to maintain and improve Li-ion battery?

What is a lithium-ion? Dell Vostro 2510 Battery,How to increase the life and maintain performance? Is it dangerous? Why recycle it?

Certain point and advice for the most of your Li-Ion battery make Dell Vostro 1720 Battery.On batteries and how to keep it true, I've read and heard so many different versions ... And other urban legends to maraboutage (stories of batteries in the freezer to recharge them ... O_o Especially do not do this with a Li-ion! He does not like heat shock.)I think the public interest (yes, really) To identify a simple and understandable information base and the good and bad practice in the use of our Li-ion batteries Dell Vostro 1520 Battery.

Aside from my personal knowledge, I am inspired largely by the Post about the great CommentCaMarche.net Maker06 and, of course, Wikipedia (like today go?).This content is in a private, family, school available, blah blah (except for a brief'll use for commercial purposes have. " To pump our competitors go elsewhere, as a result of if it's changed!) Attention waste!Before discussing the way to play well with the battery Dell Vostro 1500 Battery, I raise the reader, let me get to the purpose of generosity: the lifetime of your battery,Dell Vostro 1310 Battery ! solely a awfully little proportion of the batteries are placed on the market currently recycled. we are able to all contribute to recycling rates and supply opportunities for players during this sector a wealth of raw material (to be thus low cost, treated thus fascinating, etc.).

Looking for a collector's item by me!

The batteries of all types (alkaline, rechargeable nickel, lead, lithium ...), are dangerous for two reasons:

Physical hazards:

Never try a battery, by repairing, let alone try to "cells" that make up the battery, burning or poisoning also opened very seriously!

Environmental risks:

Do not leave the batteries Dell Vostro 1088N Battery in the trash! Be sure to recycle (all hypermarkets, containers and waste Bricomarché now skimmer.) Become. Where possible, it is important to sort through technology (alkaline or lithium, Ni / MH or Li-ion). It increases the efficiency of the subsidiaries of recycling! In the case of lithium-ion battery recycling to reduce the price of the material because the lithium  Dell Vostro 1015 Battery is recycled rather well compared to previous technologies.

Make the most of its lithium-ion batteries?

Like all batteries, lithium-ion batteries wear over time, nothing can reverse the process. And that's where the rub, you should regularly change their batteries, Dell XPS M1730 Battery making it a cost and environmental footprint.Economically and ecologically as an incentive to make the best use of our Li-ion batteries, trying to increase their service life and maintain performance.

Things not to do:

Most of the time, take care of your battery is not doing what it can hurt. Let the things that really avoid using a Li-ion battery.

No rejection!

A Li-ion battery ,Dell XPS M1330 Battery should never drop below 15% of its maximum load, or lose, durable, high capacity (up to 20% at a time).In modern applications (smartphones, laptops, tablets ...) protects the operating system of the apparatus of the battery by the user on the state of charge and automatically switch off to avoid the camera to a excessive discharge.If your device is "off" due to low battery Dell XPS M1210 Battery, the charger before restarting. It allows the battery without the other shock trying to turn the device to reload.This is especially important advice you've heard the opposite: "A number of regular full discharge for the battery in the fight against the memory effect." This advice is correct, but in the first technology-based nickel  Dell XPS M140 Battery (Ni / Cd and Ni / MH) is based.

For Li-ion discharge is too deep to cause irreparable damage to the battery!

Discharge of the battery deteriorates chemical elements in Li-ion cells. For this reason, a store to be dangerous after a deep discharge. Therefore, an internal circuit can prevent the store to avoid any disruption. The consequences are that the battery,Dell Studio 1737 Battery is unusable.We will see the correct use of the charging / discharging batteries fully adapted to the Li-ion ...

No high temperatures!

The Li-ion batteries will deteriorate by 40 ° C (exact temperature can vary on the exact composition of the battery). It is therefore very important to prevent the battery ,Dell Studio 1558 Battery gets too hot, even for a normal load!When they used the guidelines for lithium-ion batteries contain an electronic circuit load control responds: This module allows both to limit the load on the battery to prevent hot, but also communicate device information on the state of the battery.

There is protection easier and more efficient: a thermal fuse. Above a certain temperature, this component will break the circuit, making it unusable because the battery ,Dell Studio 1555 Battery is discharged that responsibility. It's just another below a low threshold again to secure the circuit itself. This system is expected to reach in any case, the batteries from the critical temperature of 70 ° C, which is not the danger of explosion!May also apply to these safeguards a small common-sense rules: Be sure to charge the cell phone in a ventilated area and not wrapped in a sweater. Put the computer to load on a flat surface for maximum cooling, on the bed ...

No change in temperature!

Temperature is really the Achilles heel of Li-ion batteries Dell Studio 1537 Battery. In addition to the high temperatures are also variations (in temperature), to weaken it.The Li-ion batteries should not be stored in a garage or storage non-temperate, summer and winter to heat our homes not regulated fits them!For all these reasons, a lithium-ion battery will not be prolonged exposure to sunlight. In summer, only a few minutes to temperatures that will permanently damage the battery Dell Studio 1535 Battery to reach!

Things to do:

After spending what to avoid, there are only two good advice for the active maintenance of the battery:

Run a full charge once a month!

Whether you're a serial-mobile or laptop 17 "sits proudly on the desk without moving cycled the battery once a month.

It is very simple:

In normal use the device until the battery Dell Studio 1436 Battery shows less than 20% residual capacity.Switch off your device (to ensure a quick charge will load all the latest cameras power charger / power available for battery)Connect (wait until the battery is green "), the charger and store the end without interruption.That's it! Once complete, you can charge your device in the rule.

Store the charge of Li-ion battery!

When storing a battery Dell Studio 1435 Battery already in use (using the secondary battery, rare, ...) to be taken to be in a dry place at moderate temperatures (20/25 ° C) and sunlight.He said the charge has no impact on the proper storage of batteries!Li-ion subject to gradual self-discharge, but durable, if not in use. The temperature increase of the phenomenon varies.We have seen that deep discharge bad for Li-ion batteries, so you have to store a charge!A condition of overload (100%) before Dell Studio 17 Battery storage is not recommended (although experience, advanced batteries, it is good enough.)

Under ideal conditions, I would recommend the battery to 70% of their maximum capacity before storage in a drawer for over 2 months.

16:01 Publié dans Science | Lien permanent | Commentaires (0)