Physics Department Projects (2019-2020)
- Title of Project.
- INVESTIGATION OF THERMAL CHARACTERISTICS OF CARBON NANOTUBES MEASUREMENT AND DEPENDENCE
- PREPARED BY:
Basira Haydar Hama. - SUPERVISED BY:
Prof. Dr Azeez Abdullah Barzinjy - ABSTRACT
The present article outlines the latest research on high carbon nanotubes (CNTs)
thermal conductivities and their nanofluids. Because of their brilliant structure and small
size, carbon nanotubes have thermal properties enabling them to be an ideal material in the
investigation of thermal controlling, both on the micro- and the macro-scales and lowdimensional phonon physics researches. Depending on the process parameters used in
CNTs synthesis, the thermal conduction properties are notably affected by the alteration of
the diameter, the chirality, the length, and the quality of CNTs. This review elucidates in
details the necessity of thermal conductivity on several factors including the aspect of
tubes, number of defects, morphology, atomic arrangement and the occurrence of
impurities. Besides these factors, the dependence of thermal conductivity on chirality and
temperature is also discussed. Several experimental investigations and theoretical models
to estimate the thermal conductivity of CNTs and their nanomaterial are also reviewed.
This review also elucidates different models suggested by researchers for estimating
properties of CNT-based nanofluids.
Key Words: Carbon nanotubes, Thermal conductivity, CNT-nanofluids, Thermal
conductivity measurement, Theoretical models.
- Title of Project.
CHARACTERIZATION TECHNIQUES OF
NANOPARTICLES
- PREPARED BY:
Lana Sarkawt
Chnar Sedeeq - SUPERVISED BY:
Prof. Dr Azeez Abdullah Barzinjy - ABSTRACT
Nano formations have pulled a mega interest as a swiftly growing class of materials for
many applications. Assorted techniques have been utilized to characterize the size, crystal
formation, elemental constitution and a diversity of other physical characteristics of
nanoparticles. In assorted cases, there are physical characteristics that can be measured by
more than one technique. Various sturdiness’s and limitations of each technique complicate
the select of the most acceptable technique, although many times a combinatorial
characterization technique is necessitated. In addition, granted that the significance of
nanoparticles in fundamental research and applications is always increasing, it is
indispensable that researchers from unconnected domains overcome the dares in the
reproducible and credible characterization of the nanomaterials, afterward their synthesis
and further processed. The main goul of this entertain is to summarize the available
knowledge on the utilize, the developments, the benefits and the foibles of a big number of
experimental techniques that are attainable for the characterization of nanoparticles.
Various characterization techniques are categorized according to the concept team of the
technique operated, the information they can prepare, or the materials that they are destined
for. Here described the main five characteristics techniques of nanoparticles, their
operation principles and given examples on their use, presenting them in a comparative
mode, when possible, in relation to the property studied in each case.
Key words: Nano formations, nanoparticles, characterization, synthesis.