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 “"SNOM"”.
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Příprava a testování SNOM sond speciálních vlastností
Fotonická krystalická vlákna (PCF) představují slibný nástroj pro spojení technik známých z mikroskopie rastrovací sondou, elektronové mikroskopie a systémů pro vstřikování plynu. Přivedení světla a přenos pracovního plynu současně do blízkosti vzorku umístěného uvnitř elektronového mikroskopu …
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Measurement of the local optical phase and amplitude in photonic devices using scanning near-field microscopy
… devices using scanning near-field microscopy (SNOM). The SNOM technique has a unique capability of achieving a resolution beyond the diffraction limit. Placing the SNOM into the arm of a heterodyne interferometer also enables the measurement of both the optical phase and amplitude in the near …
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Selective non-operative management of abdominal gunshot wounds at Groote Schuur Hospital : a cohort study of clinical outcomes and financial costs
[Background] Selective non-operative management (SNOM) of abdominal gunshot wounds is a practice that is becoming more common in major urban trauma centres. With increasing levels of violence, SNOM offers a useful method for managing injured patients. Historically, operative management of blunt and …
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Characterising nonlinear waveguides by scanning near-field optical microscopy
Scanning near-field optical microscopy (SNOM) has been applied to investigate the dispersion and nonlinear phenomena in a multimode Ta2O5 rectangular waveguide. Unlike the conventional approach of observing only the output spectra, the SNOM technique can collect the localised spectra from the …
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Outcomes of failure of selective non-operative management of penetrating abdominal trauma
Background: Selective nonoperative management (SNOM) of penetrating abdominal trauma (PAT) is routine at our centre. The aim of this observational study is to report the outcomes of patients who have failed SNOM. Methods: All patients for the period (May 2015 – January 2018) who presented with …
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Building practical apertureless scanning near-field microscopy
… the illuminating light. On the other hand, the a-SNOM system enables achieving non-propagating components of the field, which provides more details about the sample’s features. It is really difficult to measure because the amplitude of this field decays exponentially when the tip is moved away …
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Efectos de confinamiento por nanoestructuración en láminas magnéticas con anisotropía perpendicular
… cercano con capacidades magneto-ópticas (MO-SNOM) y su implementación. Por último, se ha desarrollado un código para la simulación de la interacción Radiación - Materia (FDTD) con el fin de servir como herramienta teórica para ayudar a la interpretación de los resultados obtenidos mediante el …
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Penetrating Abdominal Trauma: Spectrum of disease in a Level 1 Trauma Centre
… practices selective non-operative management (SNOM). Methods: This was a retrospective descriptive audit of prospectively collected data. The Setting was Groote Schuur Hospital Trauma Centre, Cape Town, South Africa over 24 months (1 May 2015 to 30 April 2017). All patients presenting to the …
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An investigation of phase-mask diffraction patterns and fibre Bragg gratings with scanning near-field optical microscopy
… Here, a Scanning Near-field Optical Microscope (SNOM) has been designed and constructed in order to expand this work into an analysis of the optical and structural properties of fibre Bragg gratings, which are used throughout the optical fibre telecommunications network. By imaging the evanescent …
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Development of Active Terahertz Modulators for use with Quantum Cascade Lasers and Near-Field Imaging of their Individual Resonators
… scanning near-field optical microscopes (SNOM), which can provide subwavelength resolution. Furthermore, they showed the bonding and anti-bonding modes of the sub-wavelength features. For future direct integration of metasurfaces with the QCL facet inside the cryostat, the development of a …
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Biospectroscopy investigations Into cervical cytology
… in combination with an IR free electron laser (SNOM-IR-FEL), in determining the biophysical properties of abnormal cervical cells. SNOM-IR-FEL is able to distinguish between normal and various grades of cervical abnormalities at designated wavelengths associated with DNA, amides I and II and …
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Novel Applications of Terahertz Quantum Cascade Lasers: Gas Spectroscopy, Active Control & Nearfield Imaging
… A scattering type nearfield microscope (s-SNOM) with a better than λ/1000 resolution has been demonstrated with a tuning fork based atomic force microscope (AFM) and a partially suppressed THz QCL. The detection scheme is also harnessing the self-mixing effect. Compared with conventional …
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Development of a multipurpose near-field imaging platform
… scanning near-field optical microscopy (s-SNOM) functionalities - all compatible with cryogenic operation. As a result of the simplicity and modular design, the system can be readily reconfigured to fulfill the requirements of different samples or to accommodate other material analysis …
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Electronic properties and microstructure of nanoparticulate silicon systems for diode applications
… scanning near-field optical microscopy (IR s-SNOM) were employed to investigate the micro-scale as well as the meso-scale structure of the printed particle networks and, more importantly the structure of the interface between particles. A close contact between lattice planes of different …
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Label-free DNA Sequence Detection Using Oligonucleotide Functionalized Fiber Probe with a Miniature Protrusion
… in scanning near-field optical microscopy (SNOM), intracellular surgery in cell sensing, manipulation, and injection.
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Optische Strukturierung ultradünner funktioneller Polymerfilme
… mit dem AFM gemessen werden. Mit dem SNOM konnten diese Modifikationen bereits während der Belichtung direkt analysiert werden. Die getesteten Methoden der Raman-Spektroskopie und der Metallisierung mit anschließender Röntgen-Photoelektronenspektroskopie zeigten weder die benötigte …
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Interface engineering and multi-modal characterization of co-evaporated metal halide perovskite films for efficient perovskite-silicon tandem solar cells
… scanning near-field optical microscopy (IR s-SNOM) and, for the first time, demonstrating nanoscale X-ray photoemission electron microscopy (XPEEM) on ultra-thin (5–20 nm) MHP films and buried interfaces, we reveal that insufficient MeO-2PACz coverage hinders organic precursor incorporation …
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Using structural and semantic methodologies to enhance biomedical terminologies
… is on how to enhance the conceptual content of SNOMED CT by methods of semantic harmonization. By 2015, SNOMED will become the standard terminology for EH R encoding of diagnoses and problem lists. In order to enrich the semantics and coverage of SNOMED CT for clinical and research applications, …
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Nanoscale investigation of silk proteins using near-field optics
Recent developments in nanotechnology have led to renewed interest and breakthroughs in structural biopolymers, specifically silk protein, as functional materials. The exceptional mechanical properties and the bio-compatibility of silk has enabled wide range of applications from biomedical devices, …
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Scattering Scanning Near-Field Optical Microscopy on Anisotropic Dielectrics
Near-field optical microscopy allows the nondestructive examination of surfaces with a spatial resolution far below the diffraction limit of Abbe. In fact, the resolution of this kind of microscope is not at all dependent on the wavelength, but is typically in the range of 10 to 100 nanometers. On …