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UNIT 16Task 1. Study new words and word combinations.
TASK 2. Read the text and translate it from English into Russian. NANOTECHNOLOGY Nanotechnology, shortened to “nanotech”, is the study of the controlling of matter on an atomic and molecular scale. 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. Nanostructures are assembled a single atom, molecule, or atomic layer at a time, as part of a vast new field of research in nanomaterials synthesis and assembly. Generally, structures smaller than a nanometer tend to behave much like individual atoms, while materials that are hundreds of nanometers or greater in size exhibit properties of the continuum. Nanoscale properties and behaviors can be quite different as the result of unique physical and chemical interactions. The superiority of surfaces and interfaces, and the physical confinement of matter and energy, can alter nearly all properties of materials (physical, chemical, optical, etc.), and thus produce extraordinary new behaviors. Examples include generating light from dark materials, improving efficiencies of catalysts by orders of magnitude, and turning soft and ductile materials like gold into solids with hardness equivalent to bearing steel. The final ingredient to nanotechnology is the ability to characterize and predict nanoscale properties and behavior. New experimental tools that are able to “see”, “touch”, and measure the behavior of individual nanostructures allow scientists and engineers to identify subtle differences in structure and properties that control nanoscale properties. By coupling new experimental techniques with advanced computational tools, researchers can develop, verify, and refine models and simulations that will allow the full potential for nanotechnology to be explored. 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. TASK 3. Read the sentences and decide whether the following statements are true or false. 1. Nanotechnology is creating an entirely new class of materials and devices with unique and potentially very useful properties. 2. The physical dimensions of nanotechnology are small, spanning from just a few to tens of nanometers. 3. 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. 4. Nowadays current interest in nanotechnology is not high. 5. The field of nanotechnology is developing slowly as are its practical application. 6. Unique nanoscale properties are already being used to increase energy efficiency and improve healthcare. TASK 4. Answer the following questions and retell the text. 1. What is nanotechnology? 2. What does nanotechnology deal with? 3. Which properties do materials hundreds of nanometers in size exhibit? 4. What is the final ingredient to nanotechnology? 5. What is the application of nanotechnology? |