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Thema der Arbeit ist ein alternatives Anregungskonzept für organische Leuchtdioden, bei dem elektrische Leistung über isolierte Elektroden zugeführt wird. Dabei können Verlustprozesse vermieden werden, die der Entwicklung einer organischen Laserdiode bisher im Weg stehen. Untersucht werden die Ladungsträgerdynamik und die optischen Eigenschaften der Strukturen. Eine praktische Anwendung des Konzepts stellt die transparente organische Leuchtdiode mit kapazitiver Anregung (KapOLED) dar.
Organische Halbleiter --- Kapazitive Anregung --- Laserdiode --- Optische Verstärkung --- Organische Leuchtdiode
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Conventional MRI has several limitations such as long scan durations, motion artifacts, very loud acoustic noise, signal loss due to short relaxation times, and RF induced heating of electrically conducting objects. The goals of this work are to evaluate and improve the state-of-the-art methods for MRI of tissue with short T?, to prove the feasibility of in vivo Concurrent Excitation and Acquisition, and to introduce simultaneous electroglottography measurement during functional lung MRI.
HF Resonatoren --- T2 Relaxationszeit --- VollduplexMagnetic Resonance Imaging --- simultane Anregung und Auslese --- Magnetresonanztomographie --- Full Duplex --- T2 Relaxation --- RF Resonators --- Concurrent Excitation and Acquisition --- Magnetic Resonance Imaging. --- Diagnosis. --- Diseases --- Examinations, Medical (Diagnosis) --- Medical diagnosis --- Medical examinations (Diagnosis) --- Medical tests (Diagnosis) --- Clinical medicine --- Prognosis --- Symptoms --- Clinical magnetic resonance imaging --- Diagnostic magnetic resonance imaging --- Functional magnetic resonance imaging --- Imaging, Magnetic resonance --- Medical magnetic resonance imaging --- MR imaging --- MRI (Magnetic resonance imaging) --- NMR imaging --- Nuclear magnetic resonance --- Nuclear magnetic resonance imaging --- Cross-sectional imaging --- Diagnostic imaging --- Diagnosis --- Testing --- Diagnostic use
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