Theoretical study of electrical energy generation and its dependence on temperature variation and geometrical shape properties

العناوين الأخرى

دراسة نظرية لتوليد الطاقة الكهربائية و تأثرها باختلاف درجة الحرارة و خصائص الشكل الهندسي

الجامعة

جامعة البصرة

الكلية

كلية التربية للعلوم الصرفة

القسم الأكاديمي

قسم الفيزياء

دولة الجامعة

العراق

الدرجة العلمية

دكتوراه

تاريخ الدرجة العلمية

2013

الملخص الإنجليزي

In this thesis a theoretical study of the electrical energy harvesting is made as a result of bending nanowires consisting of a number of substances.

Detailed theoretical models are derived to calculate the electrical energy harvested from a number of materials viz ZnO, GaN, BaTiO3, PZT, ZnMgO and GaAlN NWs having a number of geometrical structures viz rectangular, circular, hexagonal and tapered cross – sections.

Theoretical expressions for calculating the total charge that can be collected by the two side surfaces and the capacitance of the NW for each shape are derived too.

The amount of electrical energy generated depends on many properties of each substance such as Young's modulus, stiffness coefficient, piezoelectric coefficient, dielectric constant, moment of inertia and Poisson's ratio.

All these coefficients and constants are temperature dependent, so theoretical relations are used to calculate the effect of temperature on all of them hence on the generated electrical energy.

Nanowire length and width or diameter and applied force to the NW have a clear effect on the generated electrical energy too.

Variations of the generated electrical energy within the temperature range (0-100) oC have been calculated through the evaluation of the variation of Young's modulus, stiffness coefficient, etc.

through the same range of temperature the effect of pyroelectric effect are calculated too.

A comparison between the result of the generated electrical energy is in the cases: (i) no effect of temperature is taken into account (ii) the effect of temperature only on the pyroelectric coefficient is taken into account and (iii) the effect of temperature on the properties of the NW is taken into account without the effect of pyroelectric coefficient.

the results obtained are compared with the work of other researches.

The charges collected on the surfaces of the NW and its capacitances are calculated under the effect of applied force, length and width or diameter of the NW, and all the mentioned properties of each NW.

التخصصات الرئيسية

الفيزياء

عدد الصفحات

145

قائمة المحتويات

Table of contents.

Abstract.

Abstract in Arabic.

Chapter One : Introduction.

Chapter Two : Temperature dependence of properties of the used materials.

Chapter Three : Energy harvesting from piezoelectric materials.

Chapter Four : Results and discussion.

Chapter Five : Conclusions and future directions.

References.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Attab, Rasul Ramadan. (2013). Theoretical study of electrical energy generation and its dependence on temperature variation and geometrical shape properties. (Doctoral dissertations Theses and Dissertations Master). University of Basrah, Iraq
https://search.emarefa.net/detail/BIM-744095

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Attab, Rasul Ramadan. Theoretical study of electrical energy generation and its dependence on temperature variation and geometrical shape properties. (Doctoral dissertations Theses and Dissertations Master). University of Basrah. (2013).
https://search.emarefa.net/detail/BIM-744095

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-744095

حفظتم الحفظ طباعة

قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"

أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي

مرصد "معرفة"
لقياس الإنتاج العلمي العربي

تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر