Phase Microscopy
Phase Microscopy - Related Videos
06:49
Phase Contrast and Differential Interference Contrast (DIC) Microscopy
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Cited by 25 •
2008
This protocol highlights the principles and practical applications of Phase and Differential Interference Contrast (DIC)...
02:44
Phase-Contrast Microscopy for Evaluating Developmental Mutants in Streptomyces
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2025
Source: Bennett, J. A. et al. Visual and Microscopic Evaluation of Streptomyces Developmental Mutants. J. Vis. Exp. (2018)This video demonstrates the use of phase-contrast microscopy to examine phenotypic differences between wild-type and mutant Streptomyces coelicolor. It outlines the steps involved in preparing and imaging aerial filaments to detect developmental defects in spore formation.
01:26
Phase Contrast and Differential Interference Contrast Microscopy
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2023
Phase-Contrast Microscopes In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
10:08
Phase Behavior of Charged Vesicles Under Symmetric and Asymmetric Solution Conditions Monitored with Fluorescence Microscopy
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Cited by 20 •
2017
Experiments on phase separated giant unilamellar vesicles (GUVs) frequently neglect physiological solution conditions. This work presents approaches to study the effect of high-salinity buffer on liquid-liquid phase separation in charged multicomponent GUVs as a function of trans-membrane solution asymmetry and temperature.
09:49
In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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Cited by 3 •
2020
Presented here is a protocol for analyzing nanostructural changes during in situ biasing with transmission electron microscopy (TEM) for a stacked metal-insulator-metal structure. It has significant applications in resistive switching crossbars for the next generation of programmable logic circuits and neuromimicking hardware, to reveal their underlying operation mechanisms and practical applicability.
FAQs
Image contrast depends on how the specimen changes transmitted light. Regions with different refractive index or thickness impose different phase shifts on that light, so the microscope’s optical arrangement converts those shifts into visible intensity differences. This relationship lets investigators distinguish structural variation within otherwise transparent biological material and interpret image changes as differences in specimen properties.
Specialized optical components are essential because phase changes are not directly visible as ordinary brightness differences. In phase-contrast microscopy, these components transform phase shifts in transmitted light into image contrast. Their role links the specimen’s optical properties to the final view, making subtle variations in transparent cells observable without relying on stains that would add preparation requirements.
Phase microscopy is especially useful when preserving the specimen matters. Avoiding staining and limiting preparation supports observation of living cells while they remain viable, rather than restricting analysis to a prepared endpoint. This makes the approach suitable for following biological behavior over time and for evaluating how cells respond to experimental conditions during observation.
An observation workflow can begin with a transparent biological specimen and minimal preparation, followed by illumination with transmitted light and image formation through the relevant phase-optical components. The resulting contrast can then be recorded or examined repeatedly. Because the method reduces preparation demands, it supports direct viewing of cell shape, growth, movement, and division.
Cell culture studies benefit from phase microscopy when researchers need to monitor living cells without interrupting their condition through staining. Repeated observations can reveal changes in cell shape, growth, movement, or division. This makes the technique useful for assessing how a culture develops and how its visible behavior changes under experimental conditions.
Time-lapse analysis extends the method from individual images to dynamic biological processes. By observing the same living system across successive time points, investigators can examine patterns of growth, movement, and division rather than only a single cellular state. In biology, this supports developmental studies and experiments focused on responses that unfold during changing experimental conditions.