31-03-2010, 05:21 PM
Nanotechnology “
an overview
Presented By:
PL. Arunachalam,
Diploma in Computer Engineering
Thiagarajar polytechnic college
Salem.
Synopsis
Introduction
Applications
Automotive industry
Engineering
Medicine
Cosmetics
Textile
Sports
Chemical industry
Electronic industry
Synthesis of nanomaterials
Characterization and detection techniques
Concluding remarks
DEFINITION OF NANOTECHNOLOGY
Nanotechnology is the creation of functional materials, devices, and systems through control of matter on an atomic or molecular scale.
The creation and use of structures, devices and systems that have novel properties and functions because of their small and/or intermediate size.
NANOMATERIALS “ DEFN. &
CLASSIFICATION
Atomic domains (grains, layers or phases) spatially confined to 100nm in at least one dimension
Zero dimension “ clusters of aspect ratio 1 to infinity “ Quantum dots
One dimension “ Multilayers “ Nanowires, CNT (Carbon nano tubes)
Two dimension “ Ultrafine-grained over layers (coatings)
Three dimension “ Nanophase materials
UNIQUENESS OF NANOMATERIALS
Grains, pores, interface thickness and defects are of similar dimensions.
Nanomaterials have a large surface area but their volume is very small.
Improve mechanical properties (increased strength, toughness etc.,)
High melting point compounds.
INTERDISCIPLINARY APPROACH REQUIRED
FIELDS OF NANOTECHNOLOGY
Applications of Nanomaterial
Based Products
PEACOCK FEATHER
NANO MATERIAL - OPTICAL PROPERTIES
Synthesis of Nanomaterials
SYNTHESIS
OF NANOMATERIALS
CHARACTERIZATION AND DETECTION TECHNIQUES
Essential requirements for the development, manufacturing and commercialization of nanomaterials is their physical, chemical and biological properties on a nanoscale level
For determination of atomic structure and chemical composition of solid or liquid nanomaterials “ spectroscopic methods, X-ray and Neutron diffraction
For determination of size and shape “ Electron microcopies (SEM or TEM)
CONCLUDING REMARKS
Choice of nanocrystalline or nanostrucured material
Application
Final property requirement
Grain sizes
Density
Porosity
Choice of a suitable process
Top down or bottom up approach
Economics or viability
Nano resisters are like papers.
an overview
Presented By:
PL. Arunachalam,
Diploma in Computer Engineering
Thiagarajar polytechnic college
Salem.
Synopsis
Introduction
Applications
Automotive industry
Engineering
Medicine
Cosmetics
Textile
Sports
Chemical industry
Electronic industry
Synthesis of nanomaterials
Characterization and detection techniques
Concluding remarks
DEFINITION OF NANOTECHNOLOGY
Nanotechnology is the creation of functional materials, devices, and systems through control of matter on an atomic or molecular scale.
The creation and use of structures, devices and systems that have novel properties and functions because of their small and/or intermediate size.
NANOMATERIALS “ DEFN. &
CLASSIFICATION
Atomic domains (grains, layers or phases) spatially confined to 100nm in at least one dimension
Zero dimension “ clusters of aspect ratio 1 to infinity “ Quantum dots
One dimension “ Multilayers “ Nanowires, CNT (Carbon nano tubes)
Two dimension “ Ultrafine-grained over layers (coatings)
Three dimension “ Nanophase materials
UNIQUENESS OF NANOMATERIALS
Grains, pores, interface thickness and defects are of similar dimensions.
Nanomaterials have a large surface area but their volume is very small.
Improve mechanical properties (increased strength, toughness etc.,)
High melting point compounds.
INTERDISCIPLINARY APPROACH REQUIRED
FIELDS OF NANOTECHNOLOGY
Applications of Nanomaterial
Based Products
PEACOCK FEATHER
NANO MATERIAL - OPTICAL PROPERTIES
Synthesis of Nanomaterials
SYNTHESIS
OF NANOMATERIALS
CHARACTERIZATION AND DETECTION TECHNIQUES
Essential requirements for the development, manufacturing and commercialization of nanomaterials is their physical, chemical and biological properties on a nanoscale level
For determination of atomic structure and chemical composition of solid or liquid nanomaterials “ spectroscopic methods, X-ray and Neutron diffraction
For determination of size and shape “ Electron microcopies (SEM or TEM)
CONCLUDING REMARKS
Choice of nanocrystalline or nanostrucured material
Application
Final property requirement
Grain sizes
Density
Porosity
Choice of a suitable process
Top down or bottom up approach
Economics or viability
Nano resisters are like papers.
