Essays about: "barrier properties"
Showing result 21 - 25 of 116 essays containing the words barrier properties.
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21. Thermoelectric measurements on InAs nanowires with a ratchet-barrier
University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysikAbstract : Efficient extraction of thermal energy from electrons at the micro- and nanoscale is a long-standing scientific goal that could enable novel types of heat engines, heat management, and solar cell applications. Semiconductor nanowires are a promising system for investigating such devices for several reasons, such as their thermoelectric properties, and the potential to be grown in heterostructures with high flexibility. READ MORE
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22. Investigation of Methods to Improve PZT Sol-Gel Deposition Process for Energy Harvesting Applications
University essay from KTH/Hälsoinformatik och logistikAbstract : The purpose of this work was to investigate ways to modify Silex sol-gel deposition of PZT (PbZrxTi(1-x)O3, Lead Zirconate Titanate) in order to improve its properties for energy harvesting applications. A number of methods to improve the figure of merit for energy harvesting (FOM= e312/ε), cause self-polarization, increase lifetime, reduce cost, increase throughput or simplify processing were tested. READ MORE
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23. Insights into the burning behaviour of wood in the cone calorimeter
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : Climate change and its accompanying environmental issues have caused the building industry to use more environmentally friendly building materials. Wood have always been a buildingmaterial but due to the renewed interest in imparting sustainability and renewability, its usage has increased over the recent years. READ MORE
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24. An input-sample method for zonotopic obstacle avoidance with discrete-time control barrier functions
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : In this thesis, we consider the motion planning problem for an autonomous vehicle in an obstacle-cluttered environment approximated by zonotopes, and we propose an input sampling algorithm leveraging discrete-time control barrier function conditions (DCBF). Specifically, an optimization-based control barrier function that takes into account the geometric shapes of the vehicle and obstacles is constructed and verified. READ MORE
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25. The impact of interface characteristics on the recyclability and repulpability of packaging material
University essay from Lunds universitet/Kemiteknik (CI)Abstract : The world is slowly moving towards a more environmentally friendly mindset and many companies, such as Tetra Pak® have followed this lead by producing more environmentally friendly products and developing better materials with less environmental impact. To accommodate these requirements, it is important that the package is recyclable. READ MORE