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Nanoscale imaging of the growth and division of bacterial cells on planar substrates by atomic force microscopy (CAT#: STEM-SMMT-0007-LJX)

Introduction

The growth and reproduction of bacteria include the regular growth of each component and the increase of the number of bacteria.<br />Bacteria generally reproduce asexually by a simple dimitosis, with some bacteria such as mycobacterium tuberculosis occasionally branching. Under suitable conditions, most bacteria multiply very fast, and it only takes 20 ~ 30 minutes to divide once.




Principle

Atomic force microscope (AFM) is a new type of surface analysis instrument based on the principles of physics and imaging through the interaction of scanning probe and sample surface atoms. It belongs to the third generation of microscopes after optical microscopes and electron microscopes.
AFM usually uses a sharp probe to scan the sample, which is fixed on a microcantilever that is extremely sensitive to the surface force between the probe and the sample. The deflection of the cantilever under force can cause the laser beam emitted by the laser source to shift after being reflected by the cantilever. The detector receives reflected light, and finally receives signals that are collected, processed, and formed into surface morphology images of the sample through a computer system.

Applications

Imaging of micro and nanoscale features on the surface of the sample
Suitable for research in fields such as materials science, biology, and chemistry

Procedure

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

Materials

• Sample Type:
Bacterial cells

Notes

Operate in strict accordance with the operating procedures, and shall not arbitrarily change the operating procedures