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Found 5 swedish dissertations matching the above criteria.

  2. 1. Resonant switching and vortex dynamics in spin-flop bi-layers

    Author : Sergiy Cherepov; Vladislav Korenivski; Thomas Silva; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; spin-dynamics; MRAM; vortex; switching; Condensed matter physics; Kondenserade materiens fysik; Magnetism; Magnetism; Mesoscopic physics; Mesoskopisk fysik;

    Abstract : This thesis is a study of the static and dynamic behavior of the magne-tization in spin-flop bi-layers, which consist of two soft ferromagnetic layerscoupled by dipolar forces through a thin nonmagnetic spacer. The focus ofthe work is three fold: collective spin dynamics in the anti-parallel groundstate; resonant switching in the presence of thermal agitation; and static anddynamic behavior of the system in the vortex-pair state, with a particularemphasis on the interlayer core-core interaction. READ MORE

  4. 2. Porous Silicon Microbioreactors - Applications and Technology

    Author : Martin Bengtsson; Avdelningen för Biomedicinsk teknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; Electrical engineering; immobilised cells; enzyme reactor; micro fluidics; Microreactor; porous silicon;

    Abstract : Microfluidic systems have become one of the most interesting fields in the research of chemical analysis. Miniaturized systems exhibit numerous practical advantages when compared with traditional batch-scale synthesis such as lower sample volumes, increased control of the reactions and higher sample throughput. READ MORE

  5. 3. Microfluidic Preparation and Transport of Long DNA using Pillar Arrays

    Author : Oskar Ström; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Microfluidics; Deterministic Lateral Displacement; DNA Separation; Elastic Turbulence; Micro-pillar arrays; DNA Sample Preparation; Lab-on-a chip; elastic waves; Sample Preparation; DNA Isolation; bumper array; Fysicumarkivet A:2023:Ström;

    Abstract : This thesis presents a set of microfluidic tools and experimental studies for preparing (> 20 kbp) for genetic analysisas well as the transport of high-concentration, long-DNA solutions in pillar arrays.Long-DNA sample preparation with conventional gel-based techniques is slow (tens of hours to days) and laborious. READ MORE

  6. 4. Modeling and Control of Air-based Actuated Robots

    Author : Andreas Papadimitriou; George Nikolakopoulos; Matteo Fumagalli; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Robotics and Artificial Intelligence; Robotik och artificiell intelligens;

    Abstract : The aim of this thesis is to advance and increase the quality of the field of maintenance and exploration with the use of air-based robotic platforms. The fields that will be addressed are focusing on: a) Identification of adhesion system of climbing robots, b) the control of adhesion level and motion of climbing robots, c) the path planning based on constraints posed from platforms’ mobility characteristics and sensor requirements and d) The attitude control of a morphing Micro Aerial Vehicle (MAV) during in-flight structural re-configurations. READ MORE

  7. 5. On Control and Deployment of Autonomous Service Robots

    Author : Andreas Papadimitriou; George Nikolakopoulos; Christoforos Kanellakis; Martin Saska; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Robotics and Artificial Intelligence; Robotik och artificiell intelligens;

    Abstract : This thesis investigates the control, modeling, and localization of unmanned service robots to enable their autonomous operation in real-world applications. Recent developments in electronics and computational capability have enabled the inspection and maintenance via aerial and ground robotic platforms, thus creating novel research opportunities in the area of control frameworks of such robotics setups. READ MORE