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.
Results
Showing 1 to 20 of 22 for “"Qpi"”.
-
High-sensitivity Full-field Quantitative Phase Imaging Based on Wavelength Shifting Interferometry
Quantitative phase imaging (QPI) is a category of imaging techniques that can retrieve the phase information of the sample quantitatively. QPI features label-free contrast and non-contact detection. It has thus gained rapidly growing attention in biomedical imaging. Capable of resolving biological …
-
High throughput platform for multiscale quantitative phase imaging
Quantitative phase imaging (QPI) yields the spatial phase map of the object’s scattering potential. QPI has enabled unprecedented label-free studies in biomedicine, ranging from cell dynamics and growth to cancer diagnosis and prognosis. The field is currently transitioning from technology-driven …
-
Quantitative phase imaging : a study from 2D to 3D
In this thesis, quantitative phase imaging (QPI) techniques including 2D and 3D versions are investigated and presented. With QPI, biophysical and biochemical information of transparent biological micro-specimens can be measured and quantified. 2D quantitative phase maps of cell samples on the one …
-
Phase imaging with computational specificity for cell biology applications
… advancements in quantitative phase imaging (QPI) and deep learning have opened up an exciting frontier. It has been shown that deep learning methods, with their ability to extract intricate structures from massive raw datasets, can be applied to both interpreting QPI measurements of …
-
Computational high-throughput phase imaging
Quantitative phase imaging (QPI) is a remarkable modality for its wide range of potentials in studying biological structures without exogenous labeling. QPI utilizes the optical phase delay across the sample, instead of the image intensity, as the image contrast mechanism to provide highly …
-
Quantitative phase imaging for cellular biology
… number of cells. Quantitative phase imaging (QPI) is an emerging field that addresses this need. New quantitative phase imaging modalities have emerged that provide highly sensitive information on cellular growth, motility, dynamics and spatial organization. These parameters can be measured …
-
Applications of quantitative phase imaging for pathology
… screening program. Quantitative phase imaging (QPI) of unstained tissue provides information on the refractive index distribution, or tissue morphology, with nanometer level sensitivity. Subtle morphological changes in both the epithelial and stromal regions of tissue, which are not visible in …
-
Neural Networks For Phase Demodulation In Optical Interferometry
… for the purpose of quantitative phase imaging (QPI). We show that NNs are capable of quantifying the optical pathlength difference in an interferogram with sensitivities that achieve the fundamental limit given by the Cramér-Rao bound (CRB). As an application, we consider a particular QPI …
-
High Resolution Phase Imaging using Transport of Intensity Equation
Quantitative phase Imaging(QPI) has emerged as a valuable tool for imaging specimens with weak scattering and absorbing abilities such as cells and tissues. It is complementary to fluorescence microscopy, as such, it can be applied to unlabelled specimens without the need for fluorescent tagging. …
-
Label-free breast histopathology using quantitative phase imaging
… by using quantitative phase imaging (QPI). QPI is a label-free microscopy technique where image contrast is generated by measuring the optical path-length difference (OPD) across the specimen. OPD refers to the product of the refractive index and thickness at a point in the field of …
-
Quantitative phase imaging: advances to 3D imaging and applications to neuroscience
… a brief overview of quantitative phase imaging (QPI) methods along with applications and advances made on them. First, spatial light interference microscopy (SLIM) is introduced as a QPI method extensively used in this thesis. Using this setup, an application of QPI in neuroscience is …
-
Diffraction phase microscopy for applications in materials science
Quantitative phase imaging (QPI) is a flourishing new field which has recently found tremendous success in the life sciences. QPI utilizes not only the amplitude of the imaging field, but also its phase, in order to provide quantitative topographical and/or refractive index data. As fields from the …
-
Scanning tunneling microscopy and spectroscopy study of phase transitions and topology in layered transition metal dichalcogenides
… analysis of our Quasi-Particle Interference (QPI) study of MoTe$_2$ is provided. QPI allows one to probe the band structure of the materials below and above Fermi energy, therefore it is a powerful tool to investigate the existence of surface states such as Fermi arcs. Our experimental results …
-
Real-time quantitative phase imaging for cell studies
… passes through them. Quantitative phase imaging (QPI) has recently emerged as an effective imaging tool which provides not only better image contrast but also cell-induced phase shifts in the optical pathlength, thus allowing nanometer-scale measurements of structures and dynamics of the cells. …
-
Computational phase imaging for biomedical applications
… conversion, quantitative phase imaging (QPI) has recently gained tremendous success in material and life sciences. The first topic of this dissertation describes our effort to develop a new QPI setup, named transmission Spatial Light Interference Microscopy (tSLIM), that uses the twisted …
-
Studies on quinoa (Chenopodium quinoa) for novel food and beverage applications
… further studied using a quinoa protein isolate (QPI) extracted from an embryoenriched milling fraction. QPI required a heat-denaturation step to form gel structures. The heating pH influenced the properties drastically: heating at pH 10.5 led to a dramatic increase in solubility, emulsifying …
-
The electronic structure of the pair-density-wave (PDW) superconductor in the cuprates
… brief discussion of quasiparticle interference (QPI) and its role in modulating the dynamic charge-density. The cuprate phenomenology suggests that the PDW order coexists with a uniform d-wave superconductor, which is ordinarily dominate. Building on the analysis of the isolated PDW phase the …
-
Permeability, Pore Body, and Pore Throat Size Distributions from 2D Image Analysis: Comparison with Results from 3D Imaging and Laboratory Measurements
… UH’s Quantitative Petrographic Interpretation (QPI) software also provides accurate estimates of pore throat size distributions when compared to Mercury Injected Capillary Pressure (MICP) pore throat size measurements. Characteristics of the pore system quantified utilizing 2D-image …
-
Interferometric light microscopy for wafer defect inspection and three-dimensional object reconstruction
… reconstruction in quantitative phase imaging (QPI). Three-dimensional optical reconstruction typically uses a laser light source, suffering from speckle noise, and the measurements are usually done in the far zone by scanning the laser angles. Building on the ideas of laser diffraction …
-
Prostate tissue diagnosis using quantitative phase imaging techniques
Restriction data tranferred 2014-07-01T11:20:34-05:00 Original Data Group with Access UIUC Users [automated] Release Date: 2015-08-22 11:49:27 UTC Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system
Page 1 of 2