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  • Micro-Nano Electric Materials

    Micro-nano electric materials refer to electronic materials that have at least one dimension in the range of micron-nanometer scale in three-dimensional space, or are composed of micron basic units or nanometer basic units. Due to the composition of different materials, micro-nano electric materials often have very different properties.


    Micro-nano electric materials are widely used in many fields due to their rich and diverse types, different properties and functions. Its application fields mainly include electronic machinery, biological medicine and so on.

    • Electronic machinery: Micro-nano electric materials are widely used in electronic machinery. First, micro-nano electric materials can be used to make capacitors for backup power supply. It can also be used as a solar cell to convert light to electricity. It is also widely used to make special radio equipment, including radios and video cameras. Micro-nano electric materials can be used to make cables with good performance, which can be used to connect nanorods such as electrical circuits and appliances. Because of its good mechanical properties and chemical stability, single carbon nanotubes have become a very important class of micro-nano electric material. It can be used to make the scanning tip of scanning probe microscope, atomic force microscope and scanning tunneling microscope, which enhances the performance of the microscope in imaging, manipulation and nanolithography.

    Micro-Nano Electric MaterialsFigure 1. Micro-nano electric materials for the preparation of solar cells

    • Industry: Micro-nano electric materials are also widely used in industry. For example, concentric electronic touch screens and intelligent detection devices for external stimulus monitoring, such as temperature, humidity and pressure, are made from micro-nano electric materials. Electronic noses and eyes of some multi-functional electronic sensors used in intelligent assembly lines are also made of micro-nano electric materials.
    • Biomedicine: Micro-nano electric materials are widely used in biomedicine. Firstly, micro-nano electric materials can be used to make biomedical sensors. For example, CMOS is the most commonly used micro-nano electric material for sensors. This kind of biomedical sensor can convert the physiological information of life phenomena, properties, states, components and variables contained in human body and organism into electronic information with definite functional relationships. Micro-nano electric materials can also be used to prepare implantable electronic systems, which can be embedded in human or biological bodies to directly measure and control functions or replace organs with defective functions in the natural state of living bodies. Finally, micro-nano electric materials can also be used to make biochips for rapid and parallel analysis and processing of DNA/RNA molecules, living cells, protein molecules and even human soft tissues.

    Micro-Nano Electric MaterialsFigure 2. Micro-nano electric materials for the preparation of biosensors

    • Other areas: In addition to the above areas, micro-nano electric materials are also useful in many other areas. For example, micro-nano electric materials can be used as packaging materials to make integrated circuits and protect IC chips, and provide signaling between the chips and other system components. Micro-nano electric materials also play a role in photoelectronics. Si/GeSi heterojunction structure is a micro-nano electric material. The infrared sensor can be prepared by using the principle of photoexcitation hole emission and subband absorption in heterojunction.

    Micro-Nano Electric MaterialsFigure 3. Micro-nano electric materials for the preparation of sealing film


    1. Xiao, Xiao. (2020). "Synthesis of micro/nanoscaled metal-organic frameworks and their direct electrochemical applications." Chemical Society Reviews 49(1), 301-331.
    2. Liu, Zhengjun. (2019). "Cast monocrystalline silicon: new alternative for micro- and nano-electromechanical systems?" Journal of Microelectromechanical Systems 28(4), 595-599.
    3. Suh, Yo-Han. (2019), "Micro-to-nanometer patterning of solution-based materials for electronics and optoelectronics." RSC Advances 9(65), 2046-2069.

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