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 117 for “"total internal reflection"”.
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Development of single molecule total internal reflection fluorescence microscope
… hidden in ensemble experiments. I have built a total internal reflection fluorescence (TIRF) microscope with single-molecule sensitivity to study fluorescent molecules. The microscope is modular and multifunctional with capabilities including a wide excitation wavelength range (400-2000 nm) both …
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Amplified Total Internal Reflection at the Surface of Gain Medium
Total Internal Reflection (TIR) is the phenomenon whereby a light wave incidenton a boundary is completely reflected when the wave’s incidence angle exceeds a crit-ical angle. For decades there has been debate about whether amplified TIR froma medium exhibiting optical gain is possible, and desire …
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Investigation and application of the Frustrated-Total-Internal-Reflection phenomenon in optical fibers
… for many practical applications. Frustrated Total Internal Reflection (FTIR) is a phenomenon that shows a great potential to be used as a transduction mechanism in this type of sensors. Although physical interpretation of the phenomenon itself is rather complicated, it can be mathematically …
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Quantifying the Release of Protein Substrates from AAA+ ATPase ClpX by Single Molecule Total Internal Reflection Fluorescence Microscopy
… ATPase ClpXP. We present a new assay based on Total-Internal-Reflection Fluorescence (TIRF) microscopy that measures the lifetime of the ClpX-substrate complex. We demonstrate that the technique has the potential to identify factors that affect the mean lifetime of the ClpX-substrate complex. …
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Embedded Multilayer Thin Film Stacks as Polarizing Beam Splitters and Wave Retarders Operating under Condition of Frustrated Total Internal Reflection
… multilayer stacks under conditions of frustrated total internal reflection (FTIR) are considered. The centro-symmetric multilayer stack consists of a high-index center layer sandwiched between two identical low-index films and high-index – low-index bilayers repeated on both sides of the central …
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Adsorption of Surfactants and Mixed Surfactants at the Hydrophilic Silica/Water Interface Studied Using Total Internal Reflection Raman Spectroscopy and Target Factor Analysis
… silica/water interface has been studied using total internal reflection (TIR) Raman spectroscopy and target factor analysis (TFA). The use of a vibrational spectroscopic technique gives rise to information about the adsorbed layer at the molecular level. The combination of a linear technique …
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Measurement of light capture in solar cells from silver- and tin-plated patterned bus bars
… can reflect light back onto the silicon using total internal reflection. These patterned bus bars are tin plated and produce 1-2.5% improvement in module efficiency [6]. There is a potential for even greater improvement by using higher reflectivity metal plating on the bus bars. Silver is the …
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Microstructuring and domain-engineering of lithium niobate using combinations of light, etching and poling
… electro-optically controlled domain-engineered total internal reflection switch and beam deflector is also reported. Device construction uses electric field poling of lithium niobate to create two parallel but oppositely oriented domains. When an electric field is applied across the interface …
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Scanning angle Raman spectroscopy in polymer thin film characterization
… angle (SA) Raman spectroscopy, a variant of total internal reflection Raman spectroscopy, allows Raman spectra collection simultaneously with incident angle change. The technique is capable of obtaining chemical information, measuring submicron thickness, and detecting buried thin polymer …
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Development of a TIRF Microscope for Single Molecule Binding Studies
A single-molecule total internal reflection fluorescence microscope (TIRFM) is necessary to study the crucial interaction between PCNA and CAF-1 in replication-coupled nucleosome assembly to contribute to epigenetic inheritance. The microscope measures fluorescence following total internal …
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The Design and Analysis of Several Configurations for a Two Channel, Three Mirror X-Ray Telescope.
… of glass, 89 degrees 49 minutes of arc—for reflection of x-rays of 1.27Ã… wavelength. Such reflection of x-rays is called glancing incidence reflection. The phenomenon of glancing incidence reflection is analogous to total internal reflection of visible light. The index of refraction of most …
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An Investigation into full color Edge-lit Holographic Optical Elements
… for comparison of edge-illuminated or TIR (total internal reflection) holographic HOE performance. Material design and processing chemistries have been investigated to identify optimal conditions for high diffraction efficiency for these materials in both off-axis as well as TIR recording …
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Super-Resolution Fluorescence Microscopy using Transparent Waveguide Chips
… In order to achieve axial super-resolution, Total internal reflection fluorescence (TIRF) is often used. Total internal reflection (TIR) of light reflected at the boundary to the sample medium creates an evanescent field in the sample. This sheet-like illumination only reaches a few hundred …
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A novel ultra-low refractive index nanoporous dielectric based aqueous core waveguide system
… aqueous solutions. The waveguide relies on total internal reflection for light propagation wherein the core of the waveguide consists of the aqueous solution. The relatively low refractive index of aqueous solutions places a serious constraint on the choice of the cladding materials. …
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Divergence Model for Measurement of Goos-Hanchen Shift
… effect occurs near critical angle for total internal reflection. Image processing techniques are applied to measure the intensity distribution transfer function of a new divergence model of the Goos-Hanchen phenomena providing verification of the model. This effort includes mathematical …
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Elastomeric contact printing for sub-micron patterning of organic films
… Emitting Diodes on a wavelength scale to reduce total internal reflection and thereby enhance the outcoupling of light from the device.
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Polarizing Optical Devices Based on Embedded One-Dimensional Subwavelength-Structured Photonic-Crystal Layers
Quarter-wave retarders (QWR) that employ total internal reflection (TIR) and interference of light in a transparent thin-film coating at the base of a prism are presented. Explicit equations that guide the optimal design are provided. The optimal refractive index and normalized thickness of QWR …
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The influence of vapor pressure on droplet contact dynamics on smooth surfaces.
… were performed with different fluids using Total Internal Reflection Microscopy (TIRM) on a smooth surface to gain insight into the mechanism for the air film failure of volatile liquids. Several parameters were varied including the impact velocity and droplet volatilities to understand the …
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Parametric Design, Modeling, and Optical Evaluation of Retroreflective Prismatic Structures
… called inverted cubes (ICs) function through total internal reflection (TIR) and are used in various applications such as measurement tools, traffic signs and automotive rear and side lighting. This thesis aims to model, analyze, fabricate and study a novel type of IC retroreflectors called …
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