Nanotechnology presentation present by Fares M. AL Makrahy at Department of Pesticides Chemistry &Toxicology, Faculty of Agriculture, Alexandria University During presentations in the department for postgraduate students

1. NANOTECHNOLOGY
PRESENT ED B Y
FARES M.ALMAKRAHY
M A S T E R S T U D E N T
F A C U L T Y O F A G R I C U L T U R E
A L E X A N D R I A U N I V E R S I T Y
S E P T E M B E R 20 1 3
S U P E R V I S E R
PROF. SALAH A. SOLIMAN
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3. Definition
 Nanotechnology (nanotech)
 Is the study of the properties of molecules and
compounds that do not exceed their standards of 100
nm.
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http://www.nano.gov

4.  Is the science that deals with the treatment material
on the atomic and molecular scale.
 Nanotechnology interested inventing
new technologies and means of its dimensions are
measured by the Nanometer
Definition
http://www.nano.gov
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5.  Nanometer:
 0.001Mm.
 It is part of a millionth of a millimeter.
 It is part of a billionth of a meter.
http://www.nano.gov
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6.  Is the engineering of functional systems at the
molecular scale.
 Nano science and nanotechnology one of the areas of
materials science
http://www.nano.gov 6
http://crnano.org/whatis.htm

7.  Nano scale: Includes dimensions of nanometers in
length and one up to the 100-nm.
 Nano science: is the study of the properties of
molecules and compounds that do not exceed their
standards of 100 nm.
 Nanotechnology: is the application of these
sciences and engineered to produce useful inventions.
http://www.nano.gov
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8. Some things nanometer scale
 Object Size (nm)
 Carbon nano tube 2
 Width of DNA 2.5
 Virus 100
 Width of Human Hair 75,000
 Head of a pin 2 million
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http://www.epa.gov/oppfead1/cb/ppdc/2010/april2010/session1-nanotec.pdf

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10. Nanotechnology applications
 The ten most important applications of
nanotechnology need human.
 1 - Energy storage, production and transfer.
 2 - To improve Agricultural production.
 3 - Treatment of drinking water.
 4 - Diagnosis.
 5 - Delivery of medicines.
The Jonet Centre for Research Ethics at the University of Toronto and published the journal PLoS Medicine
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11. Nanotechnology applications
 6 - Food processing and storage.
 7 - Addressing air pollution.
 8 - Construction.
 9 - Health surveillance.
 10 - Resistance to pests and insects.
The Jonet Centre for Research Ethics at the University of Toronto and published the journal PLoS Medicine
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13. Nanotechnology applications
Ancient Egyptians
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14. Nanotechnology applications
 Medicine
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15. Nanotechnology applications
 Water purification
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16. Communication Technology
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17. Communication Technology
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18. Communication Technology
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19. Carbon Nanotubes
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20. Applications of Carbon Nanotubes
 Water and Oil Purifiers
 Structural Support
 Improves Efficiency
 Super capacitors
 Cell Therapy
 Bone Scaffolding
 Synthetic Muscles
 Biosensors a.k.a. ‘Nano-noses’
http://www.technewsdaily.com/16158-10-uses-for-carbon-nanotubes.html
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21.  Nano materials are applied in almost all fields.
Examples include:
 Conductors and semi-conductors
 Medical devices
 Sensors
 Coatings
 Pesticides
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Nanotechnology applications
http://www.epa.gov/oppfead1/cb/ppdc/2010/april2010/session1-nanotec.pdf

22. Nanotechnology and Pesticides
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 How is the preparation of Nanopesticides :
 Gold
 Silver
 Copper
 Until they reach the size of nanoparticles

23.  When you get to the size of nano-particles there is a
change in the physical and chemical properties of
materials
 Acquire new properties of materials in the case of
nanotechnology
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24. Size vs. Surface Area
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http://www.epa.gov/oppfead1/cb/ppdc/2010/april2010/session1-nanotec.pdf

25. Nanosilver
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26. Advantages of Nanopesticides
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 Limited amount of pesticides used in control pest.
 Limited use of active substances in the processing of
pesticides.
 Low cost.
 High efficiency in control pest.

27. EPA Report
 Nanomaterials behave differently
 Size can influence toxicity
 Gold has very different toxicities when nanosized
 Nano copper is more acutely toxic than micro copper
 Shape may also influence exposure and toxicity
 We still have a lot to learn
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http://www.epa.gov/oppfead1/cb/ppdc/2010/april2010/session1-nanotec.pdf

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 The United States Environmental Protection Agency
(U.S. EPA)
 Office of Pesticide Programs (OPP)
 Is a regulatory office that is responsible for pesticides
 registration for distribution and sale in the U.S

29. Why is OPP Concerned?
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Potential Human Health Concerns:
 Dermal absorption (so small they may pass through
cell membranes)
 Inhalation (go to the deep lung and may
translocateto the brain i.e, could cross the blood
brain barrier)
http://www.epa.gov/oppfead1/cb/ppdc/2010/april2010/session1-nanotec.pdf

30. Why is OPP Concerned?
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Potential Environmental Concerns:
 High durability or reactivity of some nanomaterials
raises issues on the fate in environment
 Lack of information to assess environmental
exposure to engineered Nanomaterials
http://www.epa.gov/oppfead1/cb/ppdc/2010/april2010/session1-nanotec.pdf

31.  Many of the research and scientific journals did not
mention the clear evidence about the danger of
nano-particles on human and environmental, but
there are many research-based risk assessment
of nanoparticles
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32. Nanopesticides registered
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 Nanosilver in 2010
 Registered in the U.S. Environmental Protection
Agency
 Public health pesticide
http://www.epa.gov/pesticides

33. Nanotechnology in Egypt
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34. Nanotechnology Video
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Nanotechnology Video - YouTube.mp4

35. Any questions
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