Sökning: "dark field microscopy"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden dark field microscopy.

1. 1. Particle Detection in Bone Marrow Using CNNs and Transformer Networks

   Master-uppsats, Lunds universitet/Matematik LTH

   Författare :Anna Källén; Marcus Williams; [2023]
   Nyckelord :Bone Marrow; Dark Field Microscopy; Fourier Ptychography; Machine Learning; Convolutional Neural Networks; Transformer Networks; Quantisation; Technology and Engineering;

   Sammanfattning : The critical role of hematological stem cells, concentrated in bone marrow, in disease diagnosis makes the detection of these cells an imperative task. The current process, however, is slow and heavily reliant on expert interpretation, underscoring the need for automation. LÄS MER

3. 2. Deep learning for nanofluidic scattering microscopy

   H-uppsats,

   Författare :Gustaf Sjösten; [2021-06-09]
   Nyckelord :data analysis; machine learning; deep convolutional neural networks; nanofluidic scattering spectroscopy; biomolecules; physical chemistry; dark-field microscopy;

   Sammanfattning : A novel technique for label-free, real-time characterization of single biomolecules called Nanofluidic Scatter Microscopy (NSM) has recently been developed by a the Langhammer research group at Chalmers. We have created a machine learning (ML) framework consisting of deep convolutional neural networks such as U-nets, FCNNs, and YOLO in order to characterize single biomolecules through kymographs collected through NSM, as an alternative approach to a standard data analysis method (SA). LÄS MER

4. 3. Optical Characterization of Lignin Nanoparticles

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Kristoffer Linder; [2020]
   Nyckelord :lignin; nanoparticles; nanoparticle; optical characterization; optical properties; surface plasmon resonance;

   Sammanfattning : Lignin is one of the main components of wood and plants that acts as a kind of glue providing mechanical strength. It is a main polymer component composed from three phenolic structures, i.e. p-hydroxyphenyl (H), guaiacyl (G) and syringyl (S) units. LÄS MER

5. 4. Chemical Vapor Deposition Growth and Density Functional Theory Calculations of Trilayer Graphene

   Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Författare :Mohamed Atwa; [2016]
   Nyckelord :;

   Sammanfattning : Density functional theory was employed to investigate the energetics of ABA, ABC, and intermediary stacked phases for both pristine and s-triazine functionalized graphene trilayers. The energy of the ABC-stacked phase relative to the pristine ABA-stacked ground state showed a 94% increase when s-triazine was adsorbed to the graphene surface, confirming previous studies of the ability of s-triazine to facilitate the ABC to ABA phase-transition. LÄS MER

7. 5. Detection of electron vortex beams : Using a scanning transmission electron microscope

   Kandidat-uppsats, Uppsala universitet/Materialteori

   Författare :André Löfgren; [2015]
   Nyckelord :microscopy; electron; vortex; beam; microscope; detection; detecting; doughnuts; microscopy; STEM; scanning; transsmision; mikroskopi; elektronvirvelstråle; elektronvirvelstrålar; elektron; stråle; virvel; munk; munkar; elektrontransmissionsmikroskop; elektronmikroskop; transmissionsmikroskop; detektera; detektering;

   Sammanfattning : Electron vortex beams (EVBs) are electron beams with a doughnut-like intensity profile, carrying orbital angular momentum due to their helical phase shift distribution. When employed in an electron microscope, they are expected to be efficient for the detection of magnetic signals. LÄS MER