Field electron emission from carbon fiber microemitters coated with dielectric epoxy

العناوين الأخرى

الانبعاثات الإلكترونية من ألياف الكربون المطلية بمادة الايبوكسي العازلة

مقدم أطروحة جامعية

al-Misri, Ayman Muhammad

مشرف أطروحة جامعية

Fischer, Andreas
al-Musa, Marwan Sulayman

أعضاء اللجنة

al-Tarawinah, Muadh Muhammad
al-Dumur, Hammud Abd al-Hamid
Tilfah, Ahmad Dayf Allah

الجامعة

جامعة مؤتة

الكلية

كلية العلوم

القسم الأكاديمي

قسم الفيزياء

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2017

الملخص الإنجليزي

This thesis deals with the process of field-induced electron emission from the surfaces of metals into vacuum, before and after coating by a dielectric material.

This process induced by an intense external electrostatic field and usually called cold field electron emission (CFE) is technically important due to its large number of applications, such as electron sources for microscopes and field emission displays.

The research described in the thesis addresses the effect of an insulating layer (epoxylite resin) on the field emission characteristics of clean carbon fiber.

Several tips, with different apex radii, have been prepared, and then examined in a standard Field ElectronMicroscope (FEM).

Various field electron emission characteristics have been measured under ultra-high vacuum(UHV) conditions, before and after coating by dielectric materials.

The measurements recorded include current-voltage (I V) characteristics presented as Fowler-Nordheim (FN) plots, scanning electron micrographs and spatial current distributions (electron emission images).

In order to study the effects of the dielectric coating on field emission

التخصصات الرئيسية

الفيزياء

الموضوعات

عدد الصفحات

101

قائمة المحتويات

Table of contents.

Abstract.

Abstract in Arabic.

Chapter One : Theoretical background.

Chapter Two : Review of literature.

Chapter Three : Design and methodology.

Chapter Four : Findings, discussions and recommendations.

References.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

al-Misri, Ayman Muhammad. (2017). Field electron emission from carbon fiber microemitters coated with dielectric epoxy. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-749462

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

al-Misri, Ayman Muhammad. Field electron emission from carbon fiber microemitters coated with dielectric epoxy. (Master's theses Theses and Dissertations Master). Mutah University. (2017).
https://search.emarefa.net/detail/BIM-749462

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

al-Misri, Ayman Muhammad. (2017). Field electron emission from carbon fiber microemitters coated with dielectric epoxy. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-749462

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-749462