Global ETD Search
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Showing 1 to 13 of 13 for “"fluorescence spectrum"”.
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Morphology Effects on the Optical Properties of Phenylene Vinylenes From Nano-Scale to Bulk
… measurements included UV/Vis absorption and fluorescence measurements, infrared absorption measurements, and time-resolved fluorescence measurements. Physical morphology measurements included AFM, SEM, TEM, and x-ray diffraction. The morphology of the PPV films was varied by using methanol …
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Dynamically motivated spectroscopy of small polyatomic molecules
… the dynamics of bright states observed in the fluorescence spectrum and provide insight for the design of spectroscopic schemes for accessing barrier-proximal vibrational levels. IR-UV double resonance spectroscopy enables characterization of the source of staggering in the antisymmetric …
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The electric dipole moment in the B ³Π₀₊ state of molecular iodine monochloride
The laser-induced fluorescence spectrum in ICl of the electronic system B ³Π₀₊ ← X ¹Σ₀₊ for the (2-0) vibrational band has been measured as a function of the electric field strength up to 32.5 kV/cm. From the Stark shift measurements, the dipole moment in vibrational level v' = 2 of the B ³Π₀₊ …
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High Pressure Study of Viscosity Effects on the Luminescence of Some S-Tetracyanobenzene Eda Complexes
High pressure fluorescence studies from 0 - 10 kilobars have been performed on electron donor-acceptor (EDA) complexes of s-tetracyanobenzene (TCNB) with a series of aromatic hydrocarbons. Four solvents were used, 2,2,4,4,6,8,8-heptamethylnonane (HMN), methylcyclohexane (MCH), …
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Analysis of Soil Lead Levels in an Historic District of a South Central Kentucky City
… in the soil were analyzed using a NITON X-ray Fluorescence Spectrum Analyzer, following EPA Method 6200 and the instrument protocol. Significant differences were found between the soil lead levels and paint loading (fully painted vs. non-painted). Significant differences were also found between …
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High throughput 3D optical microscopy : from image cytometry to endomicroscopy
… on different spectroscopic modalities such as fluorescence spectrum and lifetime, Raman spectrum, optical polarization and phase. Although, optical microscopy can provide superior resolution over many other medical imaging modalities such as MRI, CT or ultrasound, the relatively low throughput …
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Structure-property relationships of dyes as applied to dye-sensitized solar cells
… including ultraviolet-visible spectroscopy, fluorescence spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy are employed to study optical and electrochemical properties of dye molecules. Computational methods, including density functional theory and time-dependent …
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Vacuum-mediated incoherent processes in coherently prepared media
… we discuss <br>the absorption and fluorescence emission properties of the atomic sample <br>which may be used to construct e.g. fast optical switching devices. <br> <br>In part II, we discuss mechanical effects of the matter-light interaction <br>with the emphasis on ground state …
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Synthesis, Purification and Application of Few-Walled Carbon Nanotubes and Inorganic Nanowires
… and well characterized by TEM, Raman and fluorescence spectrum. The optical properties of DWNTs and their application in bio-imaging are primarily investigated. In addition, conducing films are fabricated using highly pure FWNTs and the relationship between the structure and the …
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Two-state systems with non-Markovian thermal and squeezed quantum noise inputs
… most notably line-narrowing in the fluorescence spectrum. The original analyses in this field of research have been based on the assumption of broad bandwidth squeezing, and we review the primary results found in this limit. Also in this limit, we study in more detail the phenomenon …
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Model-based requirement definition for instrument systems
… target asteroid by measuring the solar-induced fluorescence spectrum in the soft x-ray regime (0.5-7.5 keV). A parametric model of the instrument is created to simulate its end-to-end operation, including x-ray propagation and absorption, detector noise processes, pixel read-out, signal …
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Raman and fluorescence spectra of azabenzenes
… largest oscillator strength in the absorption spectrum.</p> <p>In 1974, Brus and coworkers obtained a fluorescence spectrum of s-tetrazine from single-mode laser excitation. This spectrum was uniquely simple since the laser mode was so narrow (~0.0002 cm<sup>-1</sup>) that only 100 transitions …
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Fluorescence lifetime-resolved imaging microscopy studies: quantitative image analysis, spectral-FLIM, and photosynthesis
… and image analysis methods for the fluorescence lifetime-resolved imaging microscopy (FLIM) were carried out in this thesis. With the new instrument setup and imaging processing algorithms, valuable information has been provided for studying in vivo photosynthesis activities. Chapter …