Search Results - "Ahluwalia, Balpreet"
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Chip-based wide field-of-view nanoscopy
Published in Nature photonics (01-05-2017)“…Present optical nanoscopy techniques use a complex microscope for imaging and a simple glass slide to hold the sample. Here, we demonstrate the inverse: the…”
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Two-dimensional TIRF-SIM–traction force microscopy (2D TIRF-SIM-TFM)
Published in Nature communications (12-04-2021)“…Quantifying small, rapidly evolving forces generated by cells is a major challenge for the understanding of biomechanics and mechanobiology in health and…”
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Automatic fringe pattern enhancement using truly adaptive period-guided bidimensional empirical mode decomposition
Published in Optics express (02-03-2020)“…Fringe patterns encode the information about the result of a measurement performed via widely used optical full-field testing methods, e.g., interferometry,…”
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4
High space–time bandwidth product imaging in low coherence quantitative phase microscopy
Published in Scientific reports (22-04-2024)“…Current low coherence quantitative phase microscopy (LC-QPM) systems suffer from either reduced field of view (FoV) or reduced temporal resolution due to the…”
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5
Nanoscopy on-a-chip: super-resolution imaging on the millimeter scale
Published in Optics express (04-03-2019)“…Optical nanoscopy techniques can image intracellular structures with high specificity at sub-diffraction limited resolution, bridging the resolution gap…”
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Chip-Based Resonance Raman Spectroscopy Using Tantalum Pentoxide Waveguides
Published in IEEE photonics technology letters (15-07-2019)“…Blood analysis is an important diagnostic tool, as it provides a wealth of information about the patient's health. Raman spectroscopy is a promising tool for…”
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Liver sinusoidal endothelial cells contribute to the uptake and degradation of entero bacterial viruses
Published in Scientific reports (21-01-2020)“…The liver is constantly exposed to dietary antigens, viruses, and bacterial products with inflammatory potential. For decades cellular uptake of virus has been…”
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8
Object detection neural network improves Fourier ptychography reconstruction
Published in Optics express (07-12-2020)“…High resolution microscopy is heavily dependent on superb optical elements and superresolution microscopy even more so. Correcting unavoidable optical…”
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Label-free superior contrast with c-band ultra-violet extinction microscopy
Published in Light, science & applications (03-03-2023)“…In 1934, Frits Zernike demonstrated that it is possible to exploit the sample’s refractive index to obtain superior contrast images of biological cells. The…”
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10
Super-condenser enables labelfree nanoscopy
Published in Optics express (02-09-2019)“…Labelfree nanoscopy encompasses optical imaging with resolution in the 100 nm range using visible wavelengths. Here, we present a labelfree nanoscopy method…”
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Single-shot fringe pattern phase retrieval using improved period-guided bidimensional empirical mode decomposition and Hilbert transform
Published in Optics express (27-09-2021)“…Fringe pattern analysis is the central aspect of numerous optical measurement methods, e.g., interferometry, fringe projection, digital holography,…”
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12
Quantification of the NA dependent change of shape in the image formation of a z‐polarized fluorescent molecule using vectorial diffraction simulations
Published in Microscopy research and technique (01-05-2022)“…The point spread function of a fixed fluorophore with its dipole axis colinear to the optical axis appears donut‐shaped when seen through a microscope, and its…”
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13
Visualizing ultrastructural details of placental tissue with super-resolution structured illumination microscopy
Published in Placenta (Eastbourne) (01-08-2020)“…Super-resolution fluorescence microscopy is a widely employed technique in cell biology research, yet remains relatively unexplored in the field of…”
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14
Fluorescence fluctuation-based super-resolution microscopy using multimodal waveguided illumination
Published in Optics express (19-07-2021)“…Photonic chip-based total internal reflection fluorescence microscopy (c-TIRFM) is an emerging technology enabling a large TIRF excitation area decoupled from…”
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15
Partially spatially coherent digital holographic microscopy and machine learning for quantitative analysis of human spermatozoa under oxidative stress condition
Published in Scientific reports (05-03-2019)“…Semen quality assessed by sperm count and sperm cell characteristics such as morphology and motility, is considered to be the main determinant of men’s…”
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16
Study of waveguide background at visible wavelengths for on-chip nanoscopy
Published in Optics express (21-06-2021)“…On-chip super-resolution optical microscopy is an emerging field relying on waveguide excitation with visible light. Here, we investigate two commonly used…”
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Towards ultrafast quantitative phase imaging via differentiable microscopy [Invited]
Published in Biomedical optics express (01-03-2024)“…With applications ranging from metabolomics to histopathology, quantitative phase microscopy (QPM) is a powerful label-free imaging modality. Despite…”
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A waveguide imaging platform for live‐cell TIRF imaging of neurons over large fields of view
Published in Journal of biophotonics (01-06-2020)“…Large fields of view (FOVs) in total internal reflection fluorescence microscopy (TIRFM) via waveguides have been shown to be highly beneficial for single…”
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3D imaging shows nano- and microparticles are internalized by salmon skin and corneal epithelial cells
Published in Frontiers in Marine Science (18-07-2024)“…The rising problem of plastic pollution is becoming one of the major environmental issues for the world. In the ocean, plastics undergo degradation into…”
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New ways of looking at very small holes – using optical nanoscopy to visualize liver sinusoidal endothelial cell fenestrations
Published in Nanophotonics (Berlin, Germany) (2018)“…Super-resolution fluorescence microscopy, also known as nanoscopy, has provided us with a glimpse of future impacts on cell biology. Far-field optical…”
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