Development of Self-Assembled Micro-Nano-Switch Systems

• Main Authors: Yi-Ning Chen, 陳宜寧
• Other Authors: Hsin-Yi Lai
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/45601492244151266853

碩士 === 國立成功大學 === 機械工程學系碩博士班 === 92 === 　　Nano-devices are building blocks for creating new technology. Nano-devices possess many distinct characteristics including high sensitivity, high speed, easy accommodation and great capacity. These characters make them very popular and so as to be adopted in various medical, communication and transportation areas. At present, either the lithographic process of MEMS technology, or atoms/molecules manipulations using the STM (scanning tunneling microscope) are used to build devices in nano-scale. Dedicated equipments for processes at quantum level are usually highly expensive. Thus, the fabrication of a device with size smaller than 100nm is complicated and costly. However, in recent years a new approach, named DDI, has emerged as a good alternative. In this new approach, scientists employed adhesive media to form nano-scale target devices of specific shapes. Although this new technique looks very promising, it has not been ready for standardization. The lack of a complete process model is the major obstacle. 　　To alleviate the problem, this project proposes a self-assembled switching model derived by using the concepts of quantum mechanics and the theory of molecular dynamics. The process to self-assemble nano-probes into a nano-switch is characterized by using the simulation tool of molecular dynamics. The quantum theory is used to study the electron quantum-transmission effect on the nano-switch. By calculating the transmission probability of electrons through the potential barrier, the associated conductance and relation between voltage and current can be estimated. Once the self-assembled switch and electronic transmission models are established, the structure of nano-switch and the transmission rate of electrons can be investigated. 　　A prototype experimental model is constructed to verify the proposed modeling procedure via numerical simulation. The results are used to come up with design guidelines for various nano-switch applications. The numerical experiments presented in the thesis indicate that the proposed method and associated modeling procedure are feasible, efficient and accurate for design and analysis of general-purpose nano-switches.