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Characteristics and uses of nanomaterials

wallpapers News 2021-07-13
Introduction to Nanoparticles
Nanoparticles refer to particles with a particle size between 1-100nm (nanoparticles are also called ultrafine particles). It belongs to the category of colloidal particle size. Nanoparticles are located in the transition zone between atomic clusters and macroscopic objects, between the microscopic system and the macroscopic system, and are a group composed of a small number of atoms or molecules, so they are neither typical microscopic systems nor typical macroscopic systems. Nanoparticles have important scientific research value. They build bridges between bulk matter and atoms and molecules.
What are the main characteristics of nanoparticles
As the particles decrease, more atoms are distributed to the surface. It is estimated that when the diameter of the particle is 10 nanometers, about 20% of the atoms are exposed on the surface. On the surface of the objects we usually touch, the proportion of atoms is less than one ten thousandth. When the particle diameter continues to decrease, the fraction of surface atoms will continue to increase. In this way, nanoparticles really open their minds, unlike the macroscopic objects we see, which enclose most of the atoms inside. It is precisely because nanoparticles have opened their minds that they have a variety of special properties.
The fusion of nanomaterials and in vitro diagnostic technology is expected to have the characteristics of lower detection limit, higher sensitivity, and stronger selectivity. The combination of nanomaterials and clinical diagnostic analysis technology will also push the clinical in vitro diagnostic discipline to a new growth point. . This article introduces the performance characteristics of several typical nanomaterials, and reviews recent research progress in the application of nanomaterials with different properties to in vitro diagnostics.
Typical nano materials and their performance characteristics

Typical nanomaterials
1. Semiconductor quantum dots
2.Gold nanoparticles
3.Magnetic Nanomaterials

Application of different signal modes of nanomaterials in in vitro diagnosis
1.Nano in vitro detection based on fluorescence signal
2.Nano in vitro detection based on Raman signal
3. Nano in vitro detection applications based on magnetic properties
4.Nano in vitro detection applications based on electrochemical signals
5. Nano in vitro detection application based on color change
6. Nano in vitro detection application based on thermal signal
Nanomaterials have been successfully used in recent years to improve the sensitivity of in vitro detection, provide different readout signals, and can simultaneously detect multiple targets and simplify the detection process. In vitro detection based on nanomaterials can be designed to display color, thermal, fluorescent, magnetic, electrochemical, and Raman signals, which is beneficial to provide a variety of functional options in the detection system. Obviously, nano-in vitro diagnostic technology has shown great potential in many application fields, especially in rapid detection. However, there are still many barriers to overcome in order to realize the clinical transformation of nano-in vitro diagnostic technology in the field of in vitro diagnostics.
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