5_photonic microscopy (tools) : Interference contrast dark field and polarizing microscopy

Polarizers

Devices that filter light to only allow oscillation in a certain plane.

Interference Contrast

A microscopy technique that enhances contrast through the interference of polarized light waves that pass through a sample.

Dark-field Microscopy

A technique that makes a dark background and highlights particles in a sample by directing light to scatter off them.

Bright-field Microscopy

A microscopy technique where light passes through the sample, resulting in a bright background.

Analytical Polarizer

A polarizing filter used after a sample to determine changes in the polarization of light caused by the sample.

Nomarski Prism

A device used in interference contrast microscopy that separates polarized light into two different polarization planes.

Birefringence

The optical property of a material that causes light to split into two rays when passing through, resulting in different polarization states.

Diatoms

Single-celled algae with intricate silica shells, often used in microscopy for imaging.

Congoret Stain

A dye used to identify amyloid deposits in tissue samples through fluorescence and polarization.

Wollaston Prism

A device that splits polarized light into two beams by utilizing birefringence.

Critical Fluorescence Technique

A method that enhances image contrast using fluorescent markers to visualize cells under a microscope.

Light Wave Polarization

The orientation of the oscillations of light waves; can be altered by passing through certain materials or filters.

Filopodia

Thin, actin-rich protrusions on the surface of a cell that are critical for cell movement and sensing the environment.

Phase Contrast

A microscopy technique that enhances contrast in transparent samples by converting phase shifts in light into amplitude changes.

Microtubules

Cytoskeletal structures that provide support and shape to cells, involved in cell division.

3D Imaging Effect

An optical illusion created by certain microscopy techniques, leading to a perception of depth and relief in 2D images.

Erythrocytes

Red blood cells that can be visualized using different microscopy techniques.

Silica Glass Box

The structure in which diatoms live, often visualized in microscopy to study their unique morphology.

Metabolic Tracers

Substances used to track metabolic processes in cells, often radiolabeled to enhance visibility under microscopy.

Microscopy Contrast Techniques

Various methods employed in microscopy to enhance differences in light intensity within a sample.