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 12 of 12 for “"Dark-field Microscopy"”.
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A machine vision-based in situ probe for automated on-line measurement of cell density and viability by dark field microscopy, image processing and pattern recognition
… the system complexity, a special probe based on dark field microscopy has been proposed in this work. A reflective condenser has been designed and built to achieve dark field illumination and high contrast images. The imaging system of the probe is also designed and configured in accordance with …
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Deformation and Transformation Mechanisms of Polybutene and Poly(vinylidene Fluoride)
… form. Potassium permanganate etching and dark field microscopy of fresh thick and thin films reveal that the lateral crystal size of the tetragonal form crystals in the fresh film is significantly reduced upon transformation to the hexagonal crystals during aging. Dark field microscopy and …
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Studying DNA-Directed Nanoassembly, Hybridization and Mismatch-Discrimination via Plasmon Scattering of Gold Nanoparticles
… plasmon resonance (LSPR) coupling of nAu via dark field microscopy. The particular role of bulky nAu was exploited for distinguishing target DNA having single-base mismatches. Here, a head-to-tail nAu-DNA alignment was found to confer the head- and tail-probe with distinctly different …
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Electrochemical Oxidation of Individual Silver Nanoparticles: Exploring the Effect of Particle Shape, Capping Ligand, Electrolyte, and Potential on the Signal
… By combining redox magnetohydrodynamics with dark field microscopy, silver and gold coated silica particles were successfully sized from a flowing mixture in both forward and reverse directions. </p>
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Βακτηριακή αποίκηση σε ασθενείς με περιοδοντίτιδα ενηλίκων: μορφολογική μελέτη
… PURPOSE OF THIS STUDY WAS TO IDENTIFY -BY USE OF DARK FIELD MICROSCOPY- MICROBIAL MORPHOTYPES IN DEEP POCKETS OF PATIENTS WITH ADULT PERIODONTITIS AND TO SEEK A PATTERN IN THEIR COLONIZATION SEQUENCE. THE CORRELATION BETWEEN THREE CLINICAL PARAMETERS (EDEMA, ERYTHEMA AND BLEEDING ON PROBING) AND …
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Design and experimental observation of topological states in photonic metasurfaces
… controlling optical coupling and electromagnetic field distributions in nanostructures. Diverse phenomena supported by photonic topological structures include robust scatter-free waveguiding, an extreme confinement of light, lasing and strong coupling with novel low- dimensional materials. A very …
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A morphological and physiological classification of Spirilla
… flagellar tufts visible with living cells by dark field microscopy and in the case of S. volutans also by phase contrast. Coccoid bodies were present in 4 week cultures in the case of most marine strains; only 3 fresh-water species exhibited these forms, Several physiological characteristics …
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Novel methods for recording and reconstructing images in digital holographic microscopy
… unstained biological cells using brightfield microscopy has resulted in the development of several specialized imaging techniques that can enhance the contrast of subcellular features without the need for labeling. Examples include phase contrast, differential interference microscopy, …
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Polymers as directing agents for motions of chemical and biological species
… has been examined by both fluorescence and dark field microscopy. The polymer brushes were formed through microcontact printing of an initiator, followed by surface-initiated Atom Transfer Radical Polymerization (SI-ATRP). SI-ATRP enables both 2-D patterning with a resolution of about 1 …
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Mirror-Coupled Nanoantennas with Hexagonal-Boron Nitride Spacers
… confined by the nanoparticle. Comparing dark-field scattering with reflection spectroscopies shows plasmonic and Fabry-Perot-like enhancements magnify subtle interference contributions, which lead to unexpected redshifts in the dark-field spectra, explained by the presence of these new …
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Characterization of swimming motility in a marine unicellular cyanobacterium
… preparations examined by transmission electron microscopy (TEM), or by high-intensity dark field microscopy. The possibility that a structure might be present that eluded visualization was eliminated by the lack of motility-dependent amplitude spectra, the absence of discrete circulation of …
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Soft Self-assembly and Densest Packings in Colloidal Models
… and dynamically. Three major challenges in this field are: a) given a set of conditions and parameters of the system, what is the equilibrium assembly structure? b) given a predetermined structure, how should we design particles to self-assemble it? c) how to avoid possible kinetic barriers to …