Introduction
During the past few years, a new term has become
a focus of attention of the whole world,
Nano or as some cal...
What is “Nanotechnology”
There are those who describes nanotechnology as the
technology that can achieve high degrees of a...
we can not set a specific age for the use of this technique
has been reported that the glass-makers in the Middle Ages
wer...
Traditional materials of nanomaterials
We have been rated traditional materials into several sub-
categories,
according to...
Classification of nanomaterials
Nanomaterials unilateral dimensional
Two-dimensional nanomaterials
Three-dimensional nanom...
Method of preparation of nanomaterials
TOP-DOWN
Method one
Photogravure
cutting
grinding
curettage
Method of preparation of nanomaterials
Method two
Bottom-up
Photogravure
cutting
grinding
curettage
Properties of nanomaterials:
Mechanical properties
Melting point Optical properties
Magnetic properties
Electrical propert...
Nanotechnology in Medicine
Doctors can control
some small tumors
that can not influence
them in the past.
Researchers
were...
Nanotechnology in
the military field
Nanotechnology can be
used
on manufacture of
electromagnetic waves that
can once cont...
Touch screen
With the discovery of many new materials with
distinctive characteristics, and become
Nanotechnology is used ...
OBSTACLES
The difficulty of this technique to obtain accurate
measurements when you reach the level of the atom.
It is dif...
Risks to human
Despite the useful features of these small particles it is based on the
small size, any particle size of 30...
Risks to the environment
The most important nanotechnology risks to the environment
in two forms, one bio accumulation, wh...
ConclusionConclusion
Some states have begun opening of institutes and
centers specialized in the field of nanotechnology a...
Nanotechnology (2)
Nanotechnology (2)
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Nanotechnology (2)

Nanotechnology in general >> aya alawad
Published on: Mar 3, 2016
Published in: Engineering      
Source: www.slideshare.net


Transcripts - Nanotechnology (2)

  • 1. Introduction During the past few years, a new term has become a focus of attention of the whole world, Nano or as some call nanotechnology. This techneq is simply enable us to make anything imagined through row molecules article next to each other Nano Nanomaterial
  • 2. What is “Nanotechnology” There are those who describes nanotechnology as the technology that can achieve high degrees of accuracy in functions, sizes and forms of materials and components, And another known as the science dealing with the smallest of small things himself. The term "nanotechnology" is derived from the Greek language and means the world of the very small finite Dwarfs
  • 3. we can not set a specific age for the use of this technique has been reported that the glass-makers in the Middle Ages were using gold nonparticipant in coloring glass The most important dates caused a change in the technique 1959 1986 2004 2003 1991 History
  • 4. Traditional materials of nanomaterials We have been rated traditional materials into several sub- categories, according to the similarity of their properties and their applications in diverse fields 1-Metals and Metal Alloys 2-ceramics 3-polymers 4-composite materials
  • 5. Classification of nanomaterials Nanomaterials unilateral dimensional Two-dimensional nanomaterials Three-dimensional nanomaterials
  • 6. Method of preparation of nanomaterials TOP-DOWN Method one Photogravure cutting grinding curettage
  • 7. Method of preparation of nanomaterials Method two Bottom-up Photogravure cutting grinding curettage
  • 8. Properties of nanomaterials: Mechanical properties Melting point Optical properties Magnetic properties Electrical properties
  • 9. Nanotechnology in Medicine Doctors can control some small tumors that can not influence them in the past. Researchers were able to enter the nanoparticles of silver to antibiotics, it is known that silver is able to kill about 650 bacteria without harming the human body.
  • 10. Nanotechnology in the military field Nanotechnology can be used on manufacture of electromagnetic waves that can once contact with the body to hide it like a plane or car and then the radar can not see and therefore disappearance
  • 11. Touch screen With the discovery of many new materials with distinctive characteristics, and become Nanotechnology is used in all industry and technology , we can say now , that touch screens have cahnged the shape of our lives , and now nanotechnology will change it radically more Thanks to many materials with structures and attributes , such as Carbon nanotubes and Graphene , the characteristics and advantages of touch screens will become better , in terms of responding to the touch , and manifesting accuracy , and power consumption , and recently can be manufactured in atransparent manner .
  • 12. OBSTACLES The difficulty of this technique to obtain accurate measurements when you reach the level of the atom. It is difficult to control the atoms formed after the division of materials.
  • 13. Risks to human Despite the useful features of these small particles it is based on the small size, any particle size of 300 nm has the ability to enter the human body smoothly and without any resistance, as it can spread and cause damage in the body, and a particle size of 70 nm can enter in the cell nucleus Some experiments have shown that when the particles enter the human body, they accumulate in the brain and blood cells and nerves, which means that it is possible these particles classified under the destructive substances to the human body.
  • 14. Risks to the environment The most important nanotechnology risks to the environment in two forms, one bio accumulation, which arises from the accumulation of nano-materials unwanted and the other in terms of their small size would be difficult to detect and cleaned and removed from the environment.
  • 15. ConclusionConclusion Some states have begun opening of institutes and centers specialized in the field of nanotechnology and it is wrong to do what many people do to stay away and not to approach this technique fear of not being understood in spite of its simplicity, and like it or not, this technology and its applications will be the focus of our daily lives in the near future

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