单晶金属线材的信号传输特性及其微观机制研究

The effects and mechanism of grain boundary in metal wires on signal transmission are researched in this program. With the number of grain boundary increasing, the resisitivity of metal wire and the fuzzy degree of signal ransmission are growing, which is due to the capacitance characteristic of grain boundary. In the research, the resonance frequency of grain boundary (RFGB) is firstly put forward. The RFGB is in the range of audio frequency, and the RFGB of metal wires is growing with the number of grain boundary increasing. When the RFGB of metal wires is equal to the frequency of transmission signal, the fuzzy degree of signal transmission is minimum, the effect of grain boundary on high and low frequency audio signal is relatively notable in the metal wire. The research results indicate that using the single crystal metal wire as the communication cable will be promising. A new method of manufacturing single crystal metal wire with small diameter and infinite length was brought forward, which combines the principle of continuous casting of single crystal with the zone melting technology. The possibility of the new method has been proved. The production of this research will accelerat the industrialization of manufacturing single crystal wires.

随着半导体技术，集成电路技术和电子元器件质量的提高和突破，作为通讯神经的连接电缆的品质已成为影响整机保真度的不容忽视的突出问题。本项目通过研究晶界对金属导电率和信号传输性能的影响规律及其微观机制，探讨以单晶金属线材制造高保真通讯电缆的必要性及其工程应用价值，为其应用奠定理论基础，促进高保真通讯技术的发展和进步。