Sökning: "Omer Nour"

Visar resultat 1 - 5 av 26 avhandlingar innehållade orden Omer Nour.

1. 1. Development of Zinc Oxide Piezoelectric Nanogenerators for Low Frequency Applications

   Författare :Eiman Satti Nour; Omer Nour; Magnus Willander; Osama O. Awadelkarim; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Zinc oxide ZnO ; hydrothermal growth; piezoelectricity; nanowires NWs ; nanogenerator NG ; energy harvesting; wireless data transmission;

   Sammanfattning : Energy harvesting using piezoelectric nanomaterials provides an opportunity for advancement towards self-powered systems. Self-powered systems are a new emerging technology, which allows the use of a system or a device that perform a function without the need for external power source like for example, a battery or any other type of source. LÄS MER

3. 2. Synthesis and Characterization of Some Nanostructured Materials for Visible Light-driven Photo Processes

   Författare :Rania Elhadi Adam; Omer Nour; Magnus Willander; Nicolas Martin; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ZnO; Nanoparticles; Nanocomposites; Heterostructures; Photocatalysis;

   Sammanfattning : Nanostructured materials for visible light driven photo-processes such as photodegradation of organic pollutants and photoelectrochemical (PEC) water oxidation for hydrogen production are very attractive because of the positive impact on the environment. Metal oxides-based nanostructures are widely used in these photoprocesses due to their unique properties. LÄS MER

4. 3. Fabrication and characterization of ZnO nanostructures for sensing and photonic device applications

   Författare :Syed M. Usman Ali; Magnus Willander; Omer Nour; Frank Bier; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanotechnology; zinc oxide; nanowires nanorods; nanotubes; nanoporous nanoflakes; electrochemical sensor and photonic devices;

   Sammanfattning : Nanotechnology is an emerging inter-disciplinary paradigm which encompasses diverse fields of science and engineering converge at the nanoscale. This nanoscale science and nanostructure engineering have well demonstrated in the fabrication of sensors/transducers devices with faster response time and better sensitivity then the planer version of the sensor’s configurations. LÄS MER

5. 4. Toward the Optimization of Low-temperature Solution-based Synthesis of ZnO Nanostructures for Device Applications

   Författare :Hatim Alnoor; Omer Nour; Magnus Willander; Antonio Ferreira da Silva; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : One-dimensional (1D) nanostructures (NSs) of Zinc Oxide (ZnO) such as nanorods (NRs) have recently attracted considerable research attention due to their potential for the development of optoelectronic devices such as ultraviolet (UV) photodetectors and light-emitting diodes (LEDs). The potential of ZnO NRs in all these applications, however, would require synthesis of high crystal quality ZnO NRs with precise control over the optical and electronic properties. LÄS MER

7. 5. Luminescence Properties of ZnO Nanostructures and Their Implementation as White Light Emitting Diodes (LEDs)

   Författare :Naveed ul Hassan Alvi; Magnus Willander; Omer Nour; Vladimir V. Mitin; Linköpings universitet; []
   Nyckelord :Nanotechnology; Zinc oxide; nanostructures; luminescence; LEDs; color rendering; NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : In this thesis, luminescence properties of ZnO nanostructures (nanorods, nanotubes, nanowalls and nanoflowers) are investigated by different approaches for possible future application of these nanostructures as white light emitting diodes. ZnO nanostructures were grown by different growth techniques on different p-type substrates. LÄS MER