Essays about: "Electron microscopes"

Showing result 1 - 5 of 11 essays containing the words Electron microscopes.

  1. 1. Petrography of impactites from the Dellen impact structure, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Robert Mroczek; [2023]
    Keywords : Dellen; Impact; structure; magnetite; apatite; shock waves; shock-metamorphic; features; Impactite; petrography; scanning electron microscope; SEM; geology; Earth and Environmental Sciences;

    Abstract : Identification and characterization of shock-metamorphic features in hypervelocity impact craters is important for our understanding of how shock waves interact with geologic materials and how impact craters form, which in turn is essential to our understanding of what role impact cratering played in the development of our solar system. Of particular interest are accessory minerals like apatite, which contains various volatiles that can affect the atmosphere of a body, or magnetite whose magnetic properties constitute a remote sensing indicator which allows us to study and understand the internal structures of distant bodies. READ MORE

  3. 2. Machine Learning Methods for Segmentation of Complex Metal Microstructure Features

    University essay from KTH/Materialvetenskap

    Author : Daniel Fredriksson; [2022]
    Keywords : Machine learning; Metallography; Automatic segmentation; Complex microstructures; Random Forest classifier.; Maskininlärning; Metallografi; Automatisk segmentering; Komplex mikrostruktur; Random Forest klassificerare;

    Abstract : Machine learning is a growing topic with possibilities that seems endless with growing areas of applications. The field of metallography today is highly dependent on the operators’ knowledge and technical equipment to perform segmentation and analysis of the microstructure. Having expert dependents is both costly and very time-consuming. READ MORE

  4. 3. Cleaning Research for 18th century Unvarnished Water-sensitive Matte Tempera Paint

    University essay from Göteborgs universitet/Institutionen för kulturvård

    Author : Anastasiya Serdyukova; [2021-11-03]
    Keywords : Conservation; Water-Sensitive; Matte Tempera; Hydrogels;

    Abstract : This master thesis studies various cleaning techniques used to conserve the unvarnished matte tempera painted surfaces of the Per Stålhammar funeral coat of arms for the Kalmar Läns museum (KLM 014946). The polychrome sculpture is dated from 1701 and has never been conserved before. READ MORE

  5. 4. 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

  6. 5. Microscopy techniques for studying polymer-polymer blends

    University essay from Umeå universitet/Institutionen för fysik

    Author : Sandra Mattsson; [2019]
    Keywords : CLEM; correlative light and electron microscopy; correlative microscopy; fluorescence microscopy; scanning electron microscopy; phase contrast microscopy; polymer blend; morphology; super yellow; PEO; poly ethylene oxide ; CLEM; korrelativ ljus- och elektronmikroskopi; korrelativ mikroskopi; fluorescensmikroskopi; svepelektronmikroskopi; faskontrastsmikroskopi; polymerblandning; morfologi; super yellow; PEO; poly etylenoxid ;

    Abstract : Semiconductors are used in many electronic applications, for example diodes, solar cells and transistors. Typically, semiconductors are inorganic materials, such as silicon and gallium arsenide, but lately more research and development has been devoted to organic semiconductors, for example semiconducting polymers. READ MORE