Across
- 2. It involves pyrolysis of hydrocarbons such as acetylene at 7000C in the presence of Fe-silica or Fegraphite catalyst under inert conditions.
- 5. are chemical substances or materials that are manufactured and used at a very small scale.
- 7. The strength of the plastic
- 8. biological systems often feature natural, functional nanomaterials.
- 9. In this type of crystal periodicity is not maintained throughout the body.
- 12. The huge market for large area, high brightness, flat-panel displays, as used in television screens and computer monitors, is driving the development of some nanomaterials.
- 14. Nanotechnology has been a boon in medical field by delivering drugs to specific cells using nanoparticles.
- 18. shortened to "Nanotech", it is the study of manipulating matter on an atomic and molecular scale.
- 19. chemical that damages chromosome.
- 20. When two or more different monomers together to polymerize their result.
- 21. Nanotechnology can be applied in the production, processing, safety and packaging of food.
- 22. An infinite periodic array of points in a space “
- 23. In general, nanoparticles have a high surface area, and hence provide higher catalytic activity.
- 28. nanomaterials have been deliberately engineered and manufactured by humans to have certain required properties.
- 31. In this type of crystal periodicity is maintained throughout the body
- 35. the extent to which the polymer chains are arranged in a regular structure instead of a random fashion.
- 36. The ability of the plastic to resist abrasion and wear.
- 37. The amount of exposure to a chemical is the single most significant factor of concern. There is a level of exposure for most chemicals below which no adverse effects are likely to be observed.
- 38. having the property of becoming permanently hard and rigid when heated.
- 39. Chemicals vary widely in how toxic (poisonous) they are. Exposure to small amounts of highly toxic chemicals can be a greater danger than exposure to large amounts of less toxic chemicals.
- 40. Nanotechnology has the potential to make construction faster, cheaper and safer.
Down
- 1. A group of one or more atoms, located in a particular way with respect to each other and associated with each point.
- 3. The extent to which the plastic affects light as it passes through the polymer.
- 4. The traditional chemical UV protection approach suffers from its poor long-term stability.
- 6. breathing in contaminated air.
- 10. are high polymers, which have elastic properties and can be stretched upto about 300 percent.
- 11. Applications of nanotechnology have the potential to change the entire agriculture sector and food industry from production to conservation, processing, packaging, transportation, and even waste treatment.
- 13. are very large molecules made when hundreds of monomers join together to form long chains.
- 15. combine nanoparticles with other nanoparticles or with larger, bulk-type materials.
- 16. The most advanced nanotechnology projects related to energy are: storage, conversion, manufacturing improvements by reducing materials and process rates, energy saving and enhanced renewable energy sources.
- 17. are synthesized from a single type of monomer.
- 24. are a class of high polymers which can be molded into any desired form by heat and pressure.Resins are actually the binders used for plastics and these two terms are used synonymously.
- 25. These nanomaterials are nanosized polymers built from branched units.
- 26. The tendency of a polymer to pass extraneous materials.
- 27. With the growth in portable electronic equipment (mobile phones, laptop computers, remote sensors), there is great demand for lightweight, highenergy density batteries.
- 29. Atoms or group of atoms forming a building block of the smallest acceptable size of the whole volume of a crystal .
- 30. chemical that causes birth defects.
- 32. Incorporating nanoparticles in paints could improve their performance, for example by making them lighter and giving them different properties.
- 33. may be incidentally produced as a byproduct of mechanical or industrial processes.
- 34. is any solid material with its atoms, or smallest units of matter, organized in a repeating pattern