II. İLERİ TEKNOLOJİLER ÇALIŞTAYI (İTÇ 2011) - Bilgesam

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Spectral relations between an idealized selective absorber, solar energy (AM 1.5) and blackbody
spectra
The ideal values of absorptivity and emissivity are respectively 100% and 0%.
However, in practice these values cannot be reached. Therefore, it is in the best
interest to get closest possible values to the ideal ones.
Classification of Nanostructured Materials
Atom clusters and filaments are defined
as zero modulation dimensionality and
can have any aspect ratio from 1 to ∞
Layers in the nanometer thickness
range consisting of ultra fine grains are
two-dimensionally modulated
Multilayered materials with layer thickness
in the nanometer range are classified as
one-dimensionally modulated
The last class is that consisting of threedimensionally
modulated microstructures
or nanophase materials
Methods to Synthesize Nano Layer Materials-Electrodeposition
3D nanostructure crystallites can be prepared using electrodeposition method by
utilizing the interference of one ion with the deposition of the other.
Electrodeposition yields grain sizes in the nanometer range when the electrodeposition
variables (e.g., bath composition, pH, temperature, current density, etc.) are