Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Excitation Transfer"”.
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Branded entertainment in emotional scenes: excitation transfer or direct affect transfer?
… scenes in which the brands are placed. Utilizing excitation transfer theory and direct affect transfer as theoretical foundations to explore how arousal and valence levels may impact brand placements, a series of studies were conducted. First, a content analysis was conducted to examine the level …
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Exploring possible coupling between phonons and internal nuclear states
… phonons and internal nuclear states, leading to excitation transfer between nuclei. The aim of this Ph.D. thesis is to experimentally test Hagelstein's theory. In this research, we used Co-57 as the sample to investigate the nuclear excited states. Unexpected non-exponential decay was seen in the …
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Quantum Physics of Photosynthetic Light -Harvesting
… of light by light harvesting complexes and transfer of electronic excitation to the photosynthetic reaction center (RC) constitutes the primary step of photosynthesis, i.e., the light harvesting process. A model for an atomic level structure of a so-called photosynthetic unit of the …
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Quantum physics of photosynthetic light-harvesting
… of light by light harvesting complexes and transfer of electronic excitation to the photosynthetic reaction center (RC) constitutes the primary step of photosynthesis, i.e., the light harvesting process. A model for an atomic level structure of a so-called photosynthetic unit of the …
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Pulsed plasma microjets: a new tool for the investigation of plasma kinetics and molecular spectroscopy
… having lifetimes shorter than 40 ns and excitation (internal) energies ≳ 11 eV. Additionally, final temperatures ranging from 90 K to 900 K for a set of nested electronic states were observed in the He2 excimer, and a highly non-equilibrium rotational distribution was recorded for the …
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Experiments to investigate phonon-nuclear interactions
… coupling interaction and an associated nuclear excitation transfer mechanism. Electric and magnetic interactions of phonons with atomic nuclei have been studied for several decades. However, such second-order interactions are too weak to induce nuclear state changes. Hagelstein and Chaudhary …
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Quantum-coupled single-electron thermal to electric conversion scheme
… to electric conversion scheme based on an excitation transfer and tunneling mechanism is studied theoretically. Coulomb coupling dominates when the hot side and the cold side are very close. Two important concepts went into the device scheme: (1) Coulomb coupling, to try to increase …
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Affective Disposition Theory in Suspense: Elucidating the Roles of Morality and Character Liking in Creating Suspenseful Affect
… all associated with more suspense and, through excitation transfer, more enjoyment. The first study also found threat to be positively associated with identification, liking, and transportation. Study 2 demonstrated that valence of a midpoint narrative outcome does not necessarily matter for …
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Engineering the Synthesis and Properties of Two-Dimensional Colloidal Perovskite Nanoplatelets
… the stability of the nanoplatelets under UV excitation, which mimics the condition of hot-carrier injection into an operating device. It is shown that the freshness of the perovskite precursor solution is crucial in maintaining the stability and efficient luminescence. Then I show that the …
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Ultrafast Vibrational Dynamics of Water and Confined Water in Reverse Micelles
A fast vibrational energy transfer across the surfactant layer of AOT reverse micelles has been measured in small AOT reverse micelles (AOT/water/CCl 4). Most of the vibrational energy from nanodroplet water is transferred to the AOT head group and then out to the CCl4 within 10 picoseconds. The …
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Kinetic processes in a high pressure laser generated plasma
… state populations are determined by energy transfer collisions between two laser-excited 3p atoms while the ion/electron density is controlled by super elastic heating of "seed electrons" in collision with 3p atoms followed by electron impact ionization of excited atoms. Excitation transfer …
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Geometry and Light in Quantum Optical Systems
… through site-specific randomness. We find high transfer efficiencies when coupled with a photon due to the geometry of the system transferring the excitation through a dark-state mechanism. Additionally, we find ways to mitigate the effect of negative the disorder of the photon-donor coupling …
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Computational investigation of light harvesting in purple photosynthetic bacteria
… energy in the form of short-lived electronic excitation called excitons. Rapid long-range exciton transport is key to the high light harvesting efficiency associated with purple bacteria. The light harvesting system of purple bacteria consists of light harvesting complex 2 (LH2), light …
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Excitation evolution and self-regulation ability of photosynthetic light-harvesting systems /
In this dissertation, excitation energy transfer in photosynthetic light-harvesting systems is studied together with the self-regulatory molecular mechanisms utilized by plants to quickly adopt to the varying environment conditions. These mechanisms, known as non-photochemical quenching, allow …
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Sužadinimo evoliucija ir savireguliacijos geba fotosintetinėse šviesą surenkančiose sistemose /
In this dissertation, excitation energy transfer in photosynthetic light-harvesting systems is studied together with the self-regulatory molecular mechanisms utilized by plants to quickly adopt to the varying environment conditions. These mechanisms, known as non-photochemical quenching, allow …
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Photocatalysis in a New Light: A Biohybrid Approach for Improved Reactivity with Tunable, Low-Energy Light Excitation
… dominant process by which absorbed sunlight is transferred between these sites is through resonance energy transfer, which is highly efficient over long distances. This work highlights that light capture and energy transfer are crucial steps for the design of highly efficient photocatalysts in …
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Effects of Masculine Gender Role Stress and Pre-arousal on Men's Cognitive, Affective, and Physiological Responses to Intimate Conflict Situations
… masculine gender roles. Furthermore, Zillmann's excitation-transfer theory has proposed that elevated levels of physiological reactivity may interfere with men's appraisal processes and ability to control their emotions and behavior. Therefore, the primary purpose of this study was to examine the …
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The role of video game violence in hostile affect, cognitions and attributional style among adolescent players: Volume 1
… findings implicated the usefulness of Zillmann's excitation-transfer theory for understanding video game effects. Ultimately, the results were conceptualised using Anderson's General Affective Aggression model. Overall, the research was fairly successful in highlighting a number of short-term …
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Developing Novel Nanoparticulated Imaging System using Luminescence Enhancement of Eu(III) and TB(III) by Single-Strand DNA Encapsulation
… found the best ratio for effective energy transfer, and developing nanoparticles to deliver the biosensor into the cells.</p> <p>It is well known that Eu (III) and Tb (III) exhibit very distinctive photo-characteristics. The luminescence of these two lanthanides is weak due to low …