Introduction to Nanotechnology free essay sample

Generally nanotechnology deals with structures of the size 100 nanometers or smaller in at least one dimension, and involves developing materials or devices within that size. Nanotechnology is very diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly, from developing new materials with dimensions on the nanoscale to investigating whether we can directly control matter on the atomic scale. There has been much debate on the future implications of nanotechnology. Nanotechnology has the potential to create many new materials and devices with a vast range of applications, such as in medicine, electronics and energy production. On the other hand, nanotechnology raises many of the same issues as with any introduction of new technology, including concerns about the toxicity and environmental impact of nanomaterials, and their potential effects on global economics, as well as speculation about various doomsday scenarios. These concerns have led to a debate among advocacy groups and governments on whether special regulation of nanotechnology is warranted. We will write a custom essay sample on Introduction to Nanotechnology or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The first use of the concepts found in nano-technology (but pre-dating use of that name) was in Theres Plenty of Room at the Bottom, a talk given by physicist Richard Feynman at an American Physical Society meeting at Caltech on December 29, 1959. Feynman described a process by which the ability to manipulate individual atoms and molecules might be developed, using one set of precise tools to build and operate another proportionally smaller set, and so on down to the needed scale. In the course of this, he noted, scaling issues would arise from the changing magnitude of various physical phenomena: gravity would become less important, surface tension and vander Waals attraction would become increasingly more significant, etc. Name – Swarnalipi Behera Regd. no – 0601211053 Roll. no – 106321 Branch – IT 1. Introduction Nanotechnology is an essentially modern scientific field that is constantly evolving as commercial and academic interest continues to increase and as new research is presented to the scientific community. The field’s simplest roots can be traced, albeit arguably, to 1959 but its primary development occurred in both the eighties and the early nineties. In addition to specific scientific achievements such as the invention of the STM, this early history is most importantly reflected in the initial vision of molecular manufacturing as it is outlined in three important works. Overall, an understanding of development and the criticism of this vision is integral for comprehending the realities and potential of nanotechnology today. Nanotechnology, shortened to nanotech, is the study of the controlling of matter on an atomic and molecular scale. Generally nanotechnology deals with structures of the size 100 nanometers or smaller in at least one dimension, and involves developing materials or devices within that size. Nanotechnology is very diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly, from developing new materials with dimensions on the nanoscale to investigating whether we can directly control matter on the atomic scale. There has been much debate on the future implications of nanotechnology. Nanotechnology has the potential to create many new materials and devices with a vast range of applications, such as in medicine, electronics and energy production. On the other hand, nanotechnology raises many of the same issues as with any introduction of new technology, including concerns about the toxicity and environmental impact of nanomaterials, and their potential effects on global economics, as well as speculation about various doomsday scenarios. These concerns have led to a debate among advocacy groups and governments on whether special regulation of nanotechnology is warranted.

Free Essays on The End of the History

Fukuyama derived his argument from the writings of Kant, Hegel and a critical reading of Marx. This new phase represented the worldwide triumph of liberal democracy with the collapse of Communism. History has ended in the sense that there is no more room for large ideological battles. The present work is the first serious attempt to provide a rounded evaluation, which is sympathetic to Fukuyama's aims. It sets his thesis in the context of 'end of history' theories from Kant to Marx, acknowledges its affinities with different aspects of them, but argues that its metaphysical commitments are much more acceptable to the modern world than those of its predecessors. Like Fukuyama, its authors believe that philosophy of history can and should make a real difference to our understanding of our present social and political problems. Why the fuss? Writing at a moment when Communisim was everywhere in retreat, it was hardly surprising that Fukuyama should have proclaimed the end of the Cold War and â€Å"unabashed victory of economic and political liberalism.† Such proclamations were already legion. What commanded attention was something far more radical. Claiming to distinguish between â€Å"what is essential and what is contingent or accidental in world history,† Fukuyama wrote that â€Å"What we are witnessing is not just the end of the Cold War, or a passing of a particular period of postwar history, but the end of history as such: that is, the end point of mankind’s ideological evolution and the universalization of Western liberal democracy as the final form of human government. â€Å"The end of history as such,† â€Å"the evolution and the universalization of Western liberal democracy as the final form of human government†: these were the sorts of statements- along with Fukuyama’s professed conviction that â€Å"the ideal will govern the material world in the long run†- that rang the alarm. Some of the neg... Free Essays on The End of the History Free Essays on The End of the History Fukuyama derived his argument from the writings of Kant, Hegel and a critical reading of Marx. This new phase represented the worldwide triumph of liberal democracy with the collapse of Communism. History has ended in the sense that there is no more room for large ideological battles. The present work is the first serious attempt to provide a rounded evaluation, which is sympathetic to Fukuyama's aims. It sets his thesis in the context of 'end of history' theories from Kant to Marx, acknowledges its affinities with different aspects of them, but argues that its metaphysical commitments are much more acceptable to the modern world than those of its predecessors. Like Fukuyama, its authors believe that philosophy of history can and should make a real difference to our understanding of our present social and political problems. Why the fuss? Writing at a moment when Communisim was everywhere in retreat, it was hardly surprising that Fukuyama should have proclaimed the end of the Cold War and â€Å"unabashed victory of economic and political liberalism.† Such proclamations were already legion. What commanded attention was something far more radical. Claiming to distinguish between â€Å"what is essential and what is contingent or accidental in world history,† Fukuyama wrote that â€Å"What we are witnessing is not just the end of the Cold War, or a passing of a particular period of postwar history, but the end of history as such: that is, the end point of mankind’s ideological evolution and the universalization of Western liberal democracy as the final form of human government. â€Å"The end of history as such,† â€Å"the evolution and the universalization of Western liberal democracy as the final form of human government†: these were the sorts of statements- along with Fukuyama’s professed conviction that â€Å"the ideal will govern the material world in the long run†- that rang the alarm. Some of the neg...