Sökning: "X-ray diffraction pattern"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden X-ray diffraction pattern.

1. 1. Structural analysis of HZO thin film and electrode using X-ray diffraction

   Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Författare :Elliot Winsnes; [2024]
   Nyckelord :HZO; hafnia; hafnium dioxide; zirconium dioxide; ferroelectricity; ferroelectric; synchrotron radiation; X-ray diffraction; Physics and Astronomy;

   Sammanfattning : Since its discovery in 2011, the ferroelectricity of thin films based on HfO2 has been studied intensively. In particular, thin films with a 1:1 ratio of HfO2 and ZrO2 (HZO) has been of great interest. The ferroelectricity arises from a non-centrosymmetric orthorhombic (o) phase of HZO whose prevalence is dependent on the processing conditions. LÄS MER

3. 2. Theoretical investigation of α-iron chromium carbide (α-Fe/Cr7C3) interfaces

   Master-uppsats, Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

   Författare :Hussein Al-Hussein; [2023]
   Nyckelord :Alpha-iron; Chromium carbide; Cr7C3; Fe; Theoretical investigation; Orthorhombic; X-ray diffraction pattern; XRD; VASP; VESTA; Body-centered-cubic; Ferrite; Density functional theory; DFT; Surface relaxation; Simulation; Calculation; Energy relaxation; Slab models; Coherency; Surface energy; Interfacial energy; Alfa-järn; Kromkarbid; Cr7C3; Fe; Teoretisk undersökning; Ortorombisk; Röntgendiffraktion; XRD; VASP; VESTA; Ytenergi; Koherent; Simulering; Beräkning; Järnkarbid; DFT; Täthetsfunktionalanalys;

   Sammanfattning : This master thesis presents a theoretical investigation of the energy and stability of interfaces in iron-carbide compounds, specifically focusing on the α-Fe/Cr7C3 system. The study aims to fill the gap in knowledge regarding the surface energetics of these interfaces using Density Functional Theory (DFT). LÄS MER

4. 3. Structure-based design of new antiviral substances against the Venezuelan equine encephalitis virus

   Master-uppsats, Lunds universitet/Tillämpad biokemi; Lunds universitet/Beräkningskemi

   Författare :Elin Öberg; [2022]
   Nyckelord :x-ray crystallography; protein crystallization; Venezuelan equine encephalitis virus; structure-based drug design; applied biochemistry; Technology and Engineering;

   Sammanfattning : The Venezuelan equine encephalitis virus (VEEV) is a highly infectious alphavirus responsible for severe outbreaks and epidemics in the Americas. The nonstructural protein 2 (nsP2) cysteine protease plays a fundamental role in the VEEV replication process, and is therefore, an attractive drug target for structure-based drug design using x-ray crystallography. LÄS MER

5. 4. Chemical modification of regenerated-cellulose films with determined patterns and different regeneration mediums to achieve superhydrophobic properties

   Kandidat-uppsats, Mittuniversitetet/Institutionen för kemiteknik

   Författare :Pornpan Kongthong; [2021]
   Nyckelord :Surface roughness; regeneration of cellulose; Regenerated-cellulose; superhydrophobic surfaces; Alkyl Ketene Dimer AKD ; Scanning Electron Microscope SEM and X-Ray diffraction XRD ;

   Sammanfattning : In our modern society there is a need to find a material that is biodegradable to reduce the use of plastic for a greener society. By means of superhydrophobic surfaces there is a possibility to replace plastic with cellulose and use Alkyl Ketene Dimer (AKD) as a sizing agent to make the surface hydrophobic. LÄS MER

7. 5. Establishing simulations of shockwaves in InSb using molecular dynamics

   Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Erik Löfquist; [2021]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Laser induced shockwaves have previously been shown to prompt structural changes in germanium. Similar experiments have now been performed in InSb, with powder diffraction patterns displaying a peak at 2.3Å indicating the formation of an unknown structure. LÄS MER