Facts about the Importance of Graphene

Graphene is a two-dimensional honeycomb arrangement of carbon atoms that is revolutionizing technology. Its discovery was so significant that it earned Russian scientists Andre Geim and Konstantin Novoselov 2010 Nobel Prize in Physics. Here are some reasons why graphene is important. It Is a Two-Dimensional Material. Nearly every material that we encounter is three-dimensional. We are only just beginning to understand how the properties of a material are changed when it is made into a two-dimensional array. The characteristics of graphene are very different from those of graphite, which is the corresponding three-dimensional arrangement of carbon. Studying graphene helps us to predict how other materials might behave in two-dimensional form. Graphene Has the Best Electrical Conductivity of Any Material. Electricity flows very quickly through the simple honeycomb sheet. Most conductors we encounter are metals, yet graphene is based on carbon, a nonmetal. This allows for the  development of electricity to flow under conditions where we might not want a metal. What conditions would those be? We are only just beginning to answer that question! Graphene Can Be Used to Make Very Small Devices. Graphene conducts so much electricity in so small a space that it may be used to develop miniaturized super-fast computers and transistors. These devices should require a minuscule amount of power to support them. Graphene is flexible, strong and transparent, too. Opens Research into Relativistic Quantum Mechanics. Graphene can be used to test the predictions of quantum electrodynamics. This is a new area of research  since it hasnt been easy to find a material that displays Dirac particles. The best part is, graphene isnt some exotic material. Its something anyone can make! Graphene Facts The word graphene refers to a single-layer sheet of hexagonally-arranged carbon atoms. If the graphene is in another arrangement, its usually specified. For example, bilayer graphene and multilayer graphene are other forms the material can take.Just like diamond or graphite, graphene is an allotrope of carbon. Specifically, it is made of  sp2 bonded carbon atoms that have a molecule bond length of 0.142 nm between atoms.Three of graphenes most useful properties are that it is extremely strong (100 to 300 times stronger than steel), its conductive (best-known conductor of heat at room temperature, with an electrical current density 6 order of magnitude higher than copper), and its flexible.Graphene is the thinnest and lightest material known. A 1-square-meter sheet of graphene weighs a mere 0.0077 grams, yet is capable of supporting up to four kilograms of weight.A sheet of graphene is naturally transparent. Potential Uses of Graphene Scientists are only just beginning to explore the many possible uses of graphene. Some of the technology under development includes: Ultra-fast charging of batteries.Collection of radioactive waste for easier clean-up.Faster flash memory.Stronger and better-balanced tools and sporting equipment, such as  tennis racquets.Ultra-thin touchscreens  that can be pasted onto a non-breakable material.Graphene-based e-paper that can update with new information.Quick and efficient biosensor devices 200, to measure blood glucose, cholesterol, and possibly your DNAHeadphones with  phenomenal frequency response.Supercapacitors  that essentially make batteries obsolete.Novel waterproof coatings.Bendable batteries.Stronger and lighter aircraft and armor.Aiding tissue regeneration.Purifying salt water into drinking water.Bionic devices that can connect directly to your bodys neurons.

Animal Farm the Danger of an Uneducated Working Class and...

â€Å"ANIMAL FARM† by George Orwell â€Å"The Danger of an Uneducated Working Class and the Use of Language as Instrumental to the Abuse of Power† Teacher: De Giacomi, Ana Carolina. Student: Resoalbe, Cecilia Analà ­. English History and Literature of the Twentieth Century. ANIMAL FARM: â€Å"The Danger of an Uneducated Working Class and The Use of Language as Instrumental to the Abuse of Power† Born in 1903, Eric Arthur Blair, better known as George Orwell, was an English political novelist and journalist, who became a recognized writer due to his sharp criticism of political oppression around the world. Having experienced hard times during the Spanish Civil War and the Russian Revolution, Orwell turned into a biting critic of both capitalist and†¦show more content†¦3 Orwell, George. Animal Farm a Fairy Story, Penguin Books, UK, 1945 (p.23) Orwell, George. Animal Farm a Fairy Story, Penguin Books, UK, 1945 (p.50) 5 http://www.sparknotes.com/lit/animalfarm/canalysis.html, August 2012. 6 Orwell, George. Animal Farm a Fairy Story, Penguin Books, UK, 1945 (p.30) 7 Orwell, George. Animal Farm a Fairy Story, Penguin Books, UK, 1945 (p.31) 4 This is how the author exposes throughout the story, the little intentions to learn and/or to exercise their skills the animals have. Whether for being lazy or innocent, the animals open the way to the pigs to have more and more control over them. A great example of this is the long-lived donkey, Benjamin, who â€Å"could read as well as a pig, but never exercised his faculty†8. Maybe, if Benjamin worked out his capacity to read, the other animals would be encouraged to do so, or at least to understand that they were being fooled by the pigs. On the other hand, the pigs rapidly become aware of the great advantages they have by developing their knowledge and critical faculties. They effectively develop speaking and writing skills from children books. Together with the awareness of the importance of education, comes the realization of the fact that if they hindered education and knowledge from other animals, they (pigs) would continue to be beneficiary. This resembles the history of England during the

Crime and Punishment Suspense Free Essays

Suspense begins in Roskolnikov’s thoughts There are times where we find ourselves living in suspense, feeling insecure about what possibly can occur next. So many things that surround us, at times, foreshadow what may happen next. When this happens, we crave to know what is the next event that will arrive. We will write a custom essay sample on Crime and Punishment: Suspense or any similar topic only for you Order Now In the book of Crime and Punishment, there are many parts in which the story becomes suspenseful. Well, how does Dostoyevsky achieve and sustain the suspense in his novel? It all starts right when we find out that Roskolnikov creates feelings of hatred towards Alyona Ivanovna, and creates some sort of plan to kill her. Even though in his thoughts laid the plan, he wasn’t completely convinced by his own being in actually completing with a crime. But once he was at the bar, where he overheard a conversation about Ivanovna and how she were better off dead, he decided that it was best that he were to do their request. This is before the suspense comes into play. Overhearing the conversations about Alyona Ivanovna persuaded Rokolnikov that it was his destiny to murder her. The more he thought about it, the more he liked the idea. This is where we can see a bit of suspense growing, because as a reader, what can we expect from a man who has never committed a crime such as killing? While Roskolnikov was a bit insecure about his decision in doing murder, he planned to use an ax to murder Alyona Ivanovna. He got his ax, and went his way to her door, waiting the moment where he can take action. It’s possible to imagine that in this moment, Roskolnikov probably tensed up in his body, possibly shook out of being nervous, and sweated heavily because he was going to do something he has never done before. The thoughts that lurked in his head of killing another person seemed right to him, because supposedly it was his â€Å"destiny†, but somewhere deep inside of him, he knew the act of murder brought consequences. This is where suspense begins to grow. Roskolnikov appears at her door, waiting for her to be in his presence. She opens the door to find him at her doorstep, and allows him to come in. Roskolnikov offered her something to distract her from seeing him get out his ax, and he was successful. The suspense by now has grown to a whole another level, where we read to find out if Roskolnikov is really capable of killing another person, or not. This part of the book ends with letting us know that he was libertine, and when the chance was presented to him, he got out his ax, and lacerated her until she lied on the floor, dead. Dostoyevsky, the author of Crime and Punishment, was successful in bringing in suspense to this part of the story. He was able to grasp for the reader’s attention, in wanting to know more of what Roskolnikov was capable of doing, what would have been his next move, and leaving them in shock when they come to find out what he ends up doing. This had to be one of the times in the book of Crime and Punishment where suspense was presented. Works Cited Dostoyevsky, Fyodor. Crime and Punishment How to cite Crime and Punishment: Suspense, Papers