MARC details
| 000 -LEADER |
|---|
| fixed length control field |
02826cam a2200313 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
EG-GiCUC |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
181126s2018 ua d f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
EG-GiCUC |
| Language of cataloging |
eng |
| Transcribing agency |
EG-GiCUC |
| 041 0# - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
eng |
| 049 ## - LOCAL HOLDINGS (OCLC) |
|---|
| Holding library |
Deposite |
| 097 ## - Thesis Degree |
|---|
| Thesis Level |
Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) |
|---|
| Classification number |
Cai01.13.07.Ph.D.2018.Mo.C |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Mohammed Ahmed Elshahat Abosaleh |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Current flow at the interface of copper and polyethylene in high-voltage apparatus / |
| Statement of responsibility, etc. |
Mohammed Ahmed Elshahat Abosaleh ; Supervised Hussein I. Anis , Ahmed A. Huzayyin |
| 246 15 - VARYING FORM OF TITLE |
|---|
| Title proper/short title |
سريان التيار عند إلتقاء النحاس والبولى إيثيلين فى أجهزة الجهد العالى |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Cairo : |
| Name of publisher, distributor, etc. |
Mohammed Ahmed Elshahat Abosaleh , |
| Date of publication, distribution, etc. |
2018 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
83 P. : |
| Other physical details |
charts ; |
| Dimensions |
30cm |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Computational quantum mechanics in the framework of density functional theory (DFT) is used to develop the interface model between Cu (111) and PE (001). The 2bulk plus band line up3 method and the projected density of states (PDOS) analysis are combined to calculate the actual barrier to charge injection. This combination of methods lead to finding new states appearing between the Fermi level of Cu and the conduction band of PE, which lowered the barrier to electrons injection. These states are due to morphological deformation that takes place in both the metal and the polymer at the interface. The most common chemical impurities that are normally found in PE are studied in this thesis to understand their impact on conduction mechanism. These impurities, such as carbonyl, vinyl, and conjugated double bond, produce trap states between the conduction and valence bands of PE, which reduce the barrier height to around the experimental value of 1 eV. The lowered barrier height increases the charge injection, which then facilitates the conduction mechanism. Variations in the dielectric constant at the interface are also a significant factor. The present study investigates the change in dielectric constant of PE at the interface with Cu using the microscopic polarization theory. It is concluded that the calculated current density using Schottky injection mechanism under a certain electric field and temperature does not only depend on the barrier height, but also on the relative dielectric constant at the interface, which in turn changed the current density and the conduction process |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE |
|---|
| Additional physical form available note |
Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Copper |
| 653 #4 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Interface |
| 653 #4 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Polyethylene {u2013} {u2013} |
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Ahmed A. Huzayyin , |
| Relator term |
|
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Hussein I. Anis , |
| Relator term |
|
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| Cataloger |
Nazla |
| Reviser |
Revisor |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| Cataloger |
Shimaa |
| Reviser |
Cataloger |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Koha item type |
Thesis |
