Characterizatio @nanoscale

Characterization -to understand the material.

Observation -to look

Brief history of material sc.

600bc to 1500 ad

1600 to 1800 ad -elements chemixal reaction

1800 ad molecules periodic table

1900 atoms quantum theory

2000 age of impurities.

Why nanoscale characterization

Everything made by elements

Wide variety of new material

Properties

Mechanidal, Electrical, Thermal, Chemical, Magnetic, Optical, Acoustic, radiological.

Material properties is depend on material

In periodic table about 100 elements . Not include the composite oxide alloy.

Approach

Bottom up, vice versa ( top down)

Om -sem-tem

Influence of process on the properties and microstructure connect how its related.

 

Structures types

Electronics – electron , bonding

Atomic

Crystal single cryst

micro and

makro-bulk

Nano and pico is the keyword for the 21 century.

Impurity and defects

Real live no perfect material

Impurity effect the properties

 

Time

Aging effect

Longer period degrade properties.

Corrosion oxidation

 

Temperature

Properties Strong depend on temp.

Time

Kredit to

Prof Kenji Kaneko

Kyushu University Japan