Basic classification
Announce According to functions, information materials mainly fall into the following categories:
1. Information detection materials. Electrical, magnetic, optical, acoustic, thermal radiation, pressure change or chemistry material Sensitive materials belong to this category and can be used to make sensors for various detection systems, such as electromagnetic Sensitive materials Photosensitive materials Piezoelectric material Etc. These materials include ceramics, semiconductors and Organic polymer And so on. two information transmission Materials refer to materials used for various communication devices that can be used to transmit information, such as Communication cables Materials Optical fiber communication Materials microwave communication Materials and GSM Cellular mobile communication Materials, etc Communication network , has become National Information Infrastructure The pillar of. Information transmission materials mainly include light-guide fiber , referred to as optical fiber. It is light in weight, small in space, anti electromagnetic interference and communication Confidentiality Strong, can be made into optical cable to replace cable, is a very promising information transmission material. 3. Information storage materials include: Magnetic storage material , mainly Metal magnetic powder And barium ferrite magnetic particles for Computer storage ； Optical storage material , Yes Magneto-optical recording Materials, phase-change optical disc materials, etc., for External storage ； iron dielectric Storage materials for Dynamic random access memory ； semiconductor Dynamic storage Material, mainly silicon, used for memory. Electronic information materials refer to microelectronics 、 Optoelectronic Technology And materials used in the field of basic products of new components, mainly including monocrystalline silicon Representative semiconductor Microelectronic materials ； laser crystal Represented by Optoelectronic material ； Dielectric ceramics and Thermosensitive ceramics Represented by ceramic material ； NdFeB （NdFeB） Permanent magnetic material Represented by magnetic material ； Optical fiber communication Material Science; Magnetic storage and CD storage Dominant data storage Material Science; Piezoelectric crystal And Film material ； Hydrogen storage material and Lithium ion Embedded materials are representative Green battery Materials, etc. These basic materials and products support communication, computer Information appliances And network technique Eternal modernity IT industry Development of. Overall electronic information materials Development trend It is oriented to large size, high uniformity, high integrity, thin-film, multi-function and Integration Direction development. Current research hotspots and technology frontiers include flexibility transistor 、 photonic crystal , SiC, GaN, ZnSe and other broadband semiconductor material Represented by Third generation semiconductor materials , organic display materials and various Nano electronic materials Etc.
