Fabricating Nanostructures on Au Surface by Scanning Tunneling Microscopy

• Main Authors: Bing-Wei Wu, 吳柄緯
• Other Authors: Rong-Li Lo
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/61911455385141577154

碩士 === 國立清華大學 === 物理學系 === 92 === By applying pulse voltage with STM, nanostructures can be fabricated on Au(111) surface on the Au ball. Various parameters were applied to fabricate different structures. Also, the influence of different kinds of tips and environments were discussed in our studies. From the STM result, we confirmed that the amplitude and the polarity of the pulse voltages are the dominant factors in fabricating nanostructures. Mounds and pits can be made when applying positive pulse on the sample, while only mounds appear when applying negative pulse. The probability of producing nanostructures is proportional to the magnitude and the duration of the pulse voltages. The size of the structure is also proportional to the pulse duration.