Search for dissertations about: "Artificial Light"

Showing result 1 - 5 of 108 swedish dissertations containing the words Artificial Light.

  1. 1. On the operation of light-emitting electrochemical cells

    University dissertation from Umeå : Umeå Universitet

    Author : E. Mattias Lindh; Umeå universitet.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Artificial Light; Organic Electronics; Light-emitting Electrochemical Cells; Electrochemical Doping; Thin-film Optical Model; Optical Modes;

    Abstract : We are in the midst of a technological revolution that permeates nearly all human activities; artificial light is one of the most visible contributors in this societal change. If more efficient, green, and versatile light sources can be developed, they might improve the life of millions of people around the world while causing minimal damage to our climate and environment. READ MORE

  2. 2. Quantum Coherence for Light Harvesting

    University dissertation from Chemical Physics, Lund University

    Author : David Palecek; Lund University.; Lunds universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coherent two-dimensional spectroscopy; Quantum coherence; Light harvesting; Photosynthetic reaction center; Energy transfer;

    Abstract : Almost all life on Earth depends on the products of photosynthesis — the biochemical process whereby solar energy is stored as chemical-rich compounds. The energy of captured photons is transferred through a network of pigment-protein complexes towards the reaction center. READ MORE

  3. 3. Non-image-forming effects of light Implications for the design of living and working environments

    University dissertation from Lund : Department of Architecture and Built Environment, Faculty of Engineering, Lund University

    Author : Mathias Adamsson; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; circadian rhythms; circannual; light exposure; melatonin; cortisol; sleep-wake behavior; perception; mood; spectral composition; measurement;

    Abstract : Seasonal variation in mood and subjective well-being are common at geographical locations further away from the equator. The 24-h light-dark cycle is the main time cue for synchronizing the human circadian clock to the external day and night. READ MORE

  4. 4. Functional and Flexible Light-Emitting Electrochemical Cells

    University dissertation from Umeå : Umeå University

    Author : Amir Asadpoordarvish; Umeå universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; all-ambient fabrication; ambient-air lifetime; encapsulation; flexible; light-emitting electrochemical cells; light-emitting paper; fysik; Physics;

    Abstract : The introduction of artificial illumination has brought extensive benefits to mankind, and during the last years we have seen a tremendous progress in this field with the introduction of the energy-efficient light-emitting diode (LED) and the high-contrast organic LED display. These high-end technologies are, however, produced using costly and complex processes, and it is anticipated that the next big thing in the field will be the advent of a low-cost and “green” illumination technology, which can be fabricated in a cost- and material-efficient manner using non-toxic and abundant raw materials, and which features attractive form factors such as flexibility, robustness and light-weight. READ MORE

  5. 5. Ruthenium(II) Polypyridyl Complexes Applications in Artificial Photosynthesis

    University dissertation from Stockholm : Institutionen för organisk kemi

    Author : Olof Johansson; Stockholms universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi;

    Abstract : Molecular mimics of PS II, which consist of a photosensitizer linked to electron acceptors/donors, are attractive candidates for the conversion of solar energy into chemical energy. Several different classes of sensitizers have been studied and among these, ruthenium(II) polypyridyl complexes continue to attract major attention. READ MORE