Aberration-corrected of central dark line defect in human tooth enamel crystals by transmission electron microscopy technology (CAT#: STEM-MIT-0027-LJX)

Introduction

Enamel, the white, translucent tissue that is the outermost layer of teeth, is the most calcified and hard tissue in mammals. In addition to crushing food, it protects the underlying dentin.
Angstro-resolution images of human enamel (HTE) microcrystals were obtained using aberration-corrected high resolution transmission electron microscope and atomic resolution scanning transmission electron microscope in open field, ring dark field and high Angle ring dark field modes.

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Principle Applications Procedure Materials Notes Related Products

Principle

Transmission electron microscopy (TEM) is to project the accelerated and concentrated electron beam onto a very thin sample, and the electron collides with the atoms in the sample and changes the direction, thus generating the stereo scattering Angle. The size of the scattering Angle is related to the density and thickness of the sample, so the image can be formed with different shades. The image can be enlarged, focused and displayed on imaging devices such as fluorescent screens, film and photosensitive coupling components. The resolution of transmission electron microscope is much higher than that of optical microscope, can reach 0.1~0.3nm, magnification of tens of thousands to millions of times. Therefore, transmission electron microscopy can be used to observe the fine structure of the sample.

Applications

Microscopic imaging in materials science or biology.

Procedure

1. Sampling
2. Preparation of slices
3. Staining (Select according to the specific experimental situation)
4. Observation

Materials

• Sample Type:
Human tooth enamel crystals

Notes

Pay attention to air humidity
Voltage needs to be stabilized

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