Electronic applications

Zinc oxide is highly sought after for several applications in biology, optoelectronics, electronics, and sensing. Zinc oxide nanorods exhibit a high exciton binding energy and a wide direct band gap, making them an attractive material for ultraviolet optoelectronic devices in the compound semiconductor field.

6p viling 11-10-2024 2 0   Download

The materials with a spinel structure have gotten some attention for their resistance to oxidizing/reducing agents and their application in many fields such as pigments, refractory, electronic engineering, magnetism, and energy storage materials.

8p vifilm 11-10-2024 1 0   Download

In this study, graphene oxide (GO) was prepared by the Hummers method. GO/CS/PVA fibers were prepared by an electrospinning method. The structure, morphology and size of the electrospun materials were characterized by X – ray diffraction (XRD) and a scanning electron microscope (SEM).

7p vikwong 29-09-2024 2 1   Download

This study employs the tight-binding density functional method GFN1-xTB to investigate the structural and electronic properties of TiO2-ZnO and TiO2-ZnO composite materials modified by Li, Na, K, and Fe metals. Computational analyses reveal the formation of weak covalent bonds between the TiO2 and ZnO components within the composite system. Doping TiO2-ZnO with metals induces significant alterations in the electronic structure, particularly in terms of ionization energy and global electrophilic index.

5p vikwong 29-09-2024 2 1   Download

In this study, the Cu-TiO2-SBA-16 photocatalytic materials were successfully prepared by direct hydrothermal synthesis method. The products were characterized by X-ray diffraction (XRD), Ultraviolet– Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), N2 adsorption–desorption isotherms, X-ray photoelectron spectroscopy (XPS) methods.

6p vikwong 29-09-2024 3 1   Download

This work demonstrates an AlGaN/GaN high electron mobility transistor (HEMT) with Cr/Graphene ohmic contacts constructed without heat treatment. The Cr/Graphene ohmic contact was fabricated using a spray-coated graphene nanoflakes solution and electron-beamevaporated Cr. This method does not require a high-temperature annealing step in conventional Ti/Al/Ni/Au ohmic contact. It is suggested that the Cr/graphene combination acts similarly to a doped n-type semiconductor in contact with AlGaN/GaN heterostructures, enabling carrier transport to the AlGaN layer.

8p xuanphongdacy06 18-09-2024 3 1   Download

CuO nanoparticles were synthesized by alcohol-assisted hydrothermal method at various pH values, using sodium hydroxide as a precursor for pH control. The chemical composition, morphological and structural properties of the obtained CuO nanoparticles were investigated by the Raman and energy-dispersive X-ray spectroscopies, the field-emission scanning electron microscopy, and the X-ray diffraction.

12p dianmotminh02 03-05-2024 3 1   Download

This paper reports on the extraction of microcrystal cellulose from cotton fiber and their application as a reinforcing agent in NR matrix. Microcrystalline cellulose was also grafted with maleic anhydride (MA) so that grafted one can improve interfacial interaction between cellulose and natural rubber. Fillers were incorporated to block natural rubber by two-roll mill dry mixing.

8p dianmotminh02 03-05-2024 3 1   Download

Once entirely the domain of space-borne applications, the effects of high energy charged particles on electronics systems is now also a concern for terrestrial devices. Reconfigurable components such as FPGAs are particularly vulnerable to radiation single event effects (SEU) as they carry a large amount of memory within a relatively small amount of circuit area. This thesis presents a Silicon on Insulator (SOI) based configuration memory system in a radiation hard reconfiguration system.

101p runthenight05 01-03-2023 9 3   Download

The aim of this thesis was to investigate and characterise the effect on electron dosimetry that localising different forms of bolus, both approximately tissue equivalent and non tissue equivalent, in a non conventional, although reproducible locations, (ie not on the phantom surface). A series of experiments were derived to compare the differences in beam characteristics between the recognised conventional method of locating bolus on the surface to that of bolus supported by the Low Melting point Attenuator (LMA) Electron insert.

238p runthenight07 01-03-2023 4 4   Download

The aim of this thesis is investigate and design a small antenna which can be embedded onto a Polyethylene substrate (used for making roof tiles). The antenna can be used to harvest ambient energy by connecting it to a rectifier. Due to the dimensional constraints of a roof tile as well as the materials used, there are limitations imposed on the antenna size, and thus the radiation efficiency and bandwidth often become a limiting factor in the overall performance of the system.

93p runthenight04 02-02-2023 11 2   Download

The objective of this project was to develop \(Ti{O_2}\) based multifunctional substrates through silver decoration, while simultaneously enhancing the photocatalytic performance of \(Ti{O_2}\) in the substrate. Employing Ag nanoparticles introduced additional functionality to the system, namely surface-enhanced Raman scattering (SERS), thus enabling the detection of trace amounts of organic molecules prior to their degradation, all with the same substrate.

123p runthenight04 02-02-2023 7 2   Download

This research investigates integrated drive topologies for Switched Reluctance Motors (SRMs). During the research project, three new power electronic topologies are proposed and simulated via extensive simulations in finite element modelling software (Maxwell) and MATLAB/Simulink.

120p runthenight04 02-02-2023 9 3   Download

This thesis presents the following contributions. First, it is identified that disturbance estimation based networks utilised for compensation possess the same polynomial architectures as signal conditioning anti-windup and their equivalents. Next, an appropriate strategy is identified to integrate disturbance compensation for finite-controlset optimisation schemes via the constraint set rather than the cost function to maintain a simple and elegant problem structure.

208p runordie3 06-07-2022 10 2   Download

Lecture Electronic commerce - Chapter 7: E-Supply Chains, Collaborative Commerce, and Corporate Portals learning objectives: Define the e-supply chain and describe its characteristics and components. List supply chain problems and their causes. List solutions to supply chain problems provided by EC. Describe RFID supply chain applications. Define c-commerce and list the major types.

50p caphesuadathemtac 09-11-2021 18 5   Download

Lecture Electronic commerce - Chapter 8: Innovative EC Systems: From E-Government and E-Learning to Consumer-to-Consumer Commerce learning objectives: Describe various e-government initiatives. Describe e-learning, virtual universities, and e-training. Describe online publishing and e-books. Discuss wikis and blogging. Describe knowledge management and dissemination as an e-business. Describe C2C activities. Describe peer-to-peer networks and applications.

47p caphesuadathemtac 09-11-2021 16 4   Download

Lecture Electronic commerce - Chapter 9: Mobile Computing and Commerce and Pervasive learning objectives: Describe the mobile computing environment that supports m-commerce (devices, software, services). Describe the four major types of wireless telecommunications networks. Define mobile commerce and understand its relationship to e-commerce. Discuss the value-added attributes, benefits, and fundamental drivers of m-commerce. Discuss m-commerce applications in finance, shopping, advertising, and provision of content. Describe the application of m-commerce within organizations.

53p caphesuadathemtac 09-11-2021 21 3   Download

Lecture Electronic commerce - Chapter 14: E-Commerce Strategy and Global EC learning objectives: Describe the strategic planning process. Describe the purpose and content of a business plan. Understand how e-commerce impacts the strategic planning process. Understand how to formulate, justify, and prioritize EC applications.

45p caphesuadathemtac 09-11-2021 12 3   Download

Lecture Electronic commerce - Chapter 19: Building E-Commerce Applications and Infrastructure learning objectives: Discuss the major steps in developing an EC application. Describe the major EC applications and list their major functionalities. List the major EC application development options along with their benefits and limitations. Discuss various EC application outsourcing options, including application service providers (ASPs), software as a service (SaaS), and utility computing. Discuss the major EC software packages and EC application suites.

50p caphesuadathemtac 09-11-2021 15 3   Download

Research objectives of the thesis: Clarification influence of the elements Na, Sr and Ba substituting for La/Ca and crystal size on the magnetic properties, phase transition and magnetocaloric effects of La0,7Ca0,3MnO3 materials. Found the materials for significant mmagnetocaloric parameters have potential for applications in magnetic refrigeration.Determine the effect of replacing Sr/Ba for Ca in La0,7Ca0,3MnO3 and Co substituting for Mn in La0,7Sr0,3MnO3 on their critical behavior as well as the ferromagnetic interactions order.

31p extraenglish 24-05-2021 25 4   Download