of MOS-capacitor on p- and n-type Si
The C-V data depends on the measurement frequency as well.
[Figure 11] Measured C-V characteristics on an P-type, N-type Si
2.4 Graph shifting
In MOS structure, we should consider non ideal effects when measure the capacitance according to applied voltage. They are 'fixed charge', 'mobile charge', and 'surface states'. When the fixed charge exists
of the energy is reflected and very little is transmitted into the test material. The couplant displaces the air and makes it possible to get more sound energy into the test specimen so that a usable ultrasonic signal can be obtained. In contact ultrasonic testing a thin film of oil, glycerin or water is generally used between the transducer and the test surface.
When scanning over the part or m
Sample illumination is transmitted white light and contrast in the sample is caused by absorbance of some of the transmitted light in dense areas of the sample.
2) Dark field microscopy
Dark field microscopy describes microscopy methods, in both light and electron microscopy, which exclude the unscattered beam from the image. As a result, the field around the specimen is generally dark.
and biological properties that differ from those of their larger, or bulk counterparts
Nanotechnology: The National Nanotechnology Initiative(NNI)-> the science of materials and phenomena in the range of 1 to 100nm in diameter
*Features of ‘nanoparticles’
Size
Shape
Surface area
Permeability
ex) liposome, polymer, quantum dot, magnetic particle, carbon nanotube, nanoshell
Significantly higher surface area and much narrower pore size distribution in the mesopore region
A large amount of amine-type CO2 capturing agent into its mesopores in a well dispersed manner
Synthesis of MA
PEI impregnation on MA
Amine grafting on MCM-41
Characterization of the materials prepared
CO2 adsorption-desorption measurement
Al(i-PrO)3 (41.68g)+ Alcohol solvent