Nanoscale welding by AFM tip induced electric field

Yu, Haibo; Jiao, Niandong; Dong, Zaili; Qu, Yanli; Li, Wen J.; Wang, Yuechao

doi:10.1109/nems.2009.5068539

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…The fabrication process is described in [13]. The height of the gold electrodes is ~50 nm and the gap width is ~1 m.…”

Section: A Assembly Of Mwcntsmentioning

confidence: 99%

Nanoscale welding of MWCNTs for nanodevice applications

Dong

2010

2010 IEEE Nanotechnology Materials and Devices Conference

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This paper describes a process to perform nanoscale welding of multi-walled carbon nanotubes (MWCNTs) using a conductive atomic force microscopy (AFM) tip. An AFM tip can be used not only to apply a mechanical force to push, drag or scratch a sample, but also to exert an electrostatic force between the conductive tip and a sample substrate by applying a bias voltage. This electrostatic field will be extremely high, due to the phenomenon of local field enhancement. Such a high electric field will provide enough energy for the metal atoms to evaporate from the conductive tip. In this paper, a model is developed to simulate the electrostatic field by adjusting the distance and the bias voltage between the conductive tip and substrate. The simulation results show that the radius of the conductive tip, the bias voltage and the gap distance will all affect the electric field intensity. In our experiments, MWCNTs are first assembled between a pair of electrodes using a dielectrophoresis (DEP) technique. Then, an electrostatic field is applied to weld MWCNTs onto the surface of microelectrodes. The experimental results show that MWCNTs can effectively be welded and the electronics performance can also be greatly improved.

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“…The fabrication process is described in [13]. The height of the gold electrodes is ~50 nm and the gap width is ~1 m.…”

Section: A Assembly Of Mwcntsmentioning

confidence: 99%

Nanoscale welding of MWCNTs for nanodevice applications

Dong

2010

2010 IEEE Nanotechnology Materials and Devices Conference

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“…It has potential applications in nanosoldering [1,2] and nanostructure fabricating [3]. Thus AFM Deposition has drawn great interest.…”

Section: Introductionmentioning

confidence: 99%

A current assisted deposition method based on contact mode atomic force microscope

Liu

Jiao

Liu

et al. 2013

2013 IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems

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Abstract-This paper introduces a novel AFM deposition method. In contrast to traditional method, the method in this paper has two differences. Firstly in our method AFM works in contact mode. AFM tip presses on substrate slightly in contact mode and it does not need to control AFM tip-substrate separation precisely, which makes AFM deposition easy to carry out. Secondly current is applied to AFM tip to induce deposition instead of voltage. By applying current, uniform nanodots can be fabricated repeatedly. Furthermore, nanolines can be fabricated directly in a single action with the method. The method is potential to be used for soldering nanowires or fabricating nanostructures.

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“…AFM deposition method is an important method for nanofabrication [1,2,3]. It has potentials to improve electrical properties of nanodevices by soldering nano components together [4,5]. Also it has potentials to be used for fabrications of metal-oxide-semiconductors by depositing metal to an insulating substrate [6].…”

Section: Introductionmentioning

confidence: 99%

Atomic Force Microscope Deposition Assisted by Electric Field

Liu

Jiao

王

et al. 2013

AMR

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This paper introduces atomic force microscope (AFM) deposition method to fabricate nanostructures and nanodevices. Field emission theory is introduced in this paper, which provides theoretical explanation for AFM deposition. Dot matrixes are fabricated by AFM deposition on three different substrates, Si, Au and GaAs. Differences of deposition on the three substrates are discussed. AFM deposition has many practical applications. For example, AFM deposition can be used to solder nano components together to improve electrical properties of nanodevices. Besides nanosoldering, AFM deposition can also be used in fabrication of nanodevices. Thus AFM deposition is a valuable research field for future massive applications of nanodevices.

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Nanoscale welding by AFM tip induced electric field

Cited by 5 publications

References 13 publications

Nanoscale welding of MWCNTs for nanodevice applications

Nanoscale welding of MWCNTs for nanodevice applications

A current assisted deposition method based on contact mode atomic force microscope

Atomic Force Microscope Deposition Assisted by Electric Field

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