BY:
Chinmoy
Yogesh
3/7/2014
1
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The origin of the the term “nano” comes from the
Greek word “nanos” for dwarf, but in scientific
usage, “nano” means...
Nano science is the study of fundamental
principles of molecules and structures with at least
one dimension roughly betwee...
what exactly is nanotechnology?
Most definitions revolve around the study and control of phenomena and
materials at length...
Nanotechnology is the
manipulation of matter at
the nanometer scale to
create novel
structures, devices and
systems.
Stru...
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2000 Years Ago – Sulfide nanocrystals used by
Greeks and Romans to dye hair.
1000 Years Ago (Middle Ages) –...
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Carbon NanoTubes
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Medicine
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Information Technology
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Nano Robots
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Nano Filters
Energy
Nano Transistor
Sti...
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Nanomaterials is a field which takes a materials
science-based approach to nanotechnology. It studies
materials with mo...
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Sunscreens and Cosmetics.
Phosphors for High-Definition TV
Elimination of Pollutants.
High-Sensitivity Sensors.
...
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Top-down Approaches
Bottom-up Approaches
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In top down technique, generally a bulk material
is taken and machined it to modify into desired
shape and product.
...
Nano scicece and nano particles final
Nano scicece and nano particles final
Nano scicece and nano particles final
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Nano scicece and nano particles final

Basic Introduction
Published on: Mar 3, 2016
Published in: Education      
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Transcripts - Nano scicece and nano particles final

  • 1. BY: Chinmoy Yogesh 3/7/2014 1
  • 2.   The origin of the the term “nano” comes from the Greek word “nanos” for dwarf, but in scientific usage, “nano” means one billionth. One nanometer is 1/1000000000 of a meter.
  • 3. Nano science is the study of fundamental principles of molecules and structures with at least one dimension roughly between 1 and 100 nanometers.
  • 4. what exactly is nanotechnology? Most definitions revolve around the study and control of phenomena and materials at length scales below 100 nm and quite often they make a comparison with a human hair, which is about 80,000 nm wide. It seems that a size limitation of nanotechnology to the 1-100 nm range, the area where size-dependant quantum effects come to bear, would exclude numerous materials and devices, especially in the pharmaceutical area, and some experts caution against a rigid definition based on a sub-100 nm size. Another important criteria for the definition is the requirement that the nanostructure is man-made. Otherwise you would have to include every naturally formed biomolecule and material particle, in effect redefining much of chemistry and molecular biology as 'nanotechnology.' So nanotechnology can be defined as “The design, characterization, production, and application of structures, devices, and systems by controlled manipulation of size and shape at the nanometer scale (atomic, molecular, and macromolecular scale) that produces structures, devices, and systems with at least one novel/superior characteristic or property.” Nano werk
  • 5. Nanotechnology is the manipulation of matter at the nanometer scale to create novel structures, devices and systems. Structures (e.g.materi als) Devices (e.g. sensors) Systems (e.g. NEMS)
  • 6.      2000 Years Ago – Sulfide nanocrystals used by Greeks and Romans to dye hair. 1000 Years Ago (Middle Ages) – Gold nanoparticles of different sizes used to produce different colors in stained glass windows. 1974 – “Nanotechnology” - Taniguchi uses the term nanotechnology for the first time. 1981 – IBM develops Scanning Tunneling Microscope. 1991 – Carbon nanotube discovered by S. Iijima
  • 7. • Carbon NanoTubes • Medicine • Information Technology • Nano Robots • Nano Filters Energy Nano Transistor Stinger: Targeted Drug Delivery Aerogel Nano Robot
  • 8.  Nanomaterials is a field which takes a materials science-based approach to nanotechnology. It studies materials with morphological features on the nanoscale, and especially those which have special properties stemming from their nanoscale dimensions.
  • 9.     Sunscreens and Cosmetics. Phosphors for High-Definition TV Elimination of Pollutants. High-Sensitivity Sensors. University of Granada (Georgia Tech Photo: Gary Meek)
  • 10.   Top-down Approaches Bottom-up Approaches
  • 11.   In top down technique, generally a bulk material is taken and machined it to modify into desired shape and product. On the other hand, bottom up technique is used to build something from the basic material.