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Showing result 1 - 5 of 6 essays matching the above criteria.

1. 1. The Effect of Electrode Composition on the Composition of Binary Ag/Au Nanoparticles Produced by Spark Ablation

   University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Author : Linnéa Jönsson; [2021]
   Keywords : Nanoparticles; Spark Ablation; Technology and Engineering;

   Abstract : Synthesis of nanoparticles with high control of the particle composition, high purity and high throughput is of great interest for multiple applications such as catalysis, medicine, energy storage, sensoring, and electronics. As an alternative method to the traditionally used chemical synthesis routes, gas-phase methods have gained attention due to the avoidance of solvents resulting in higher purity of the particles, but also due to the more flexible choice of materials. READ MORE

3. 2. Principal Component Analysis for STEM-EDS images: Optimal collection parameters

   University essay from Lunds universitet/Centrum för analys och syntes

   Author : Isac Lazar; [2020]
   Keywords : Principal Component Analysis; PCA; STEM; data analysis; machine learning; metal machining; materials; materials chemistry; materialkemi; Technology and Engineering;

   Abstract : STEM-EDS is a common technique used for compositional mapping in materials. The vasts amounts of raw data produced by STEM EDS is suitable for advanced analysis using methods in unsupervised machine learning. One powerful method is Principal Component Analysis (PCA) which can automatically discover significant chemical correlations in a sample. READ MORE

4. 3. Sn-Pb-mixtures for Perovskite Solar Cells

   University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Author : Fanny Amanda Karolina Baumann; [2020]
   Keywords : Perovskite Solar Cells; PSC; Sn; Tin; Lead; Pb; FAPI; Renewable Energy; Compositional Engineering; Interfaces; Morphology; PL; Photoluminescence; Thin film stability; Technology and Engineering;

   Abstract : Perovskite research has quickly gone from non-existent to one of the biggest reseach areas in Photo- voltaics. There are still many questions to be solved regarding the stability, environmental impact, reproducible large area devices, efficiency and module fabrication cost of Perovskite Solar Cells, PSCs, before commercial up-scaling. READ MORE

5. 4. Generation of Model NiMo Hydrotreating Nano-catalyst via the Spark Discharge Technique

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Hatoon Makhool; [2020]
   Keywords : Model catalyst systems; hydrotreating catalysts; NiMo catalysts; Spark discharge technique; nanoparticles; chemical engineering; kemiteknik; Technology and Engineering;

   Abstract : Establishing a technically practical method to generate representative model catalysts for the use in characterizations and testing prior to catalyst implementation in chemical process units would allow for a more sophisticated understanding of the underlying catalytic mechanisms. As a step towards establishing such a method, generating non-agglomerated, spherical NiMo nanoparticles, with diameters below 25 nm and atomic composition of maximum 30 at% Ni with Mo (maximum 3:7 Ni:Mo atomic ratio), for application as model hydrotreating catalysts, was addressed. READ MORE

6. 5. Reengineering Java Game Variants into a Compositional Product Line

   University essay from Göteborgs universitet/Institutionen för data- och informationsteknik

   Author : Jamel Debbiche; Oskar Lignell; [2019-10-31]
   Keywords : Software Product Line; Reengineering; Migration;

   Abstract : Compositional Software Product Line Engineering is known to be tidious but powerful approach to migrate existing systems into SPL. This paper analyses the pros and cons of compositional SPLE strategies and also attempts to migrate five related Java games into an SPL while outlining the necessary activities to perform such migration. READ MORE