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Friction-induced nanofabrication method to produce protrusive nanostructures on quartz.

Song C, Li X, Yu B, Dong H, Qian L, Zhou Z - Nanoscale Res Lett (2011)

Bottom Line: The height of these nanostructures increases with the increase of the number of scratching cycles or the normal load.Further analysis reveals that during scratching, a contact pressure ranged from 0.4Py to Py (Py is the critical yield pressure of quartz) is apt to produce protuberant nanostructures on quartz under the given experimental conditions.Finally, it is of great interest to find that the protrusive nanostructures can be selectively dissolved in 20% KOH solution.

View Article: PubMed Central - HTML - PubMed

Affiliation: Tribology Research Institute, National Traction Power Laboratory, Southwest Jiaotong University, Chengdu, Sichuan Province 610031, People's Republic of China. linmao@swjtu.edu.cn.

ABSTRACT
In this paper, a new friction-induced nanofabrication method is presented to fabricate protrusive nanostructures on quartz surfaces through scratching a diamond tip under given normal loads. The nanostructures, such as nanodots, nanolines, surface mesas and nanowords, can be produced on the target surface by programming the tip traces according to the demanded patterns. The height of these nanostructures increases with the increase of the number of scratching cycles or the normal load. Transmission electron microscope observations indicated that the lattice distortion and dislocations induced by the mechanical interaction may have played a dominating role in the formation of the protrusive nanostructures on quartz surfaces. Further analysis reveals that during scratching, a contact pressure ranged from 0.4Py to Py (Py is the critical yield pressure of quartz) is apt to produce protuberant nanostructures on quartz under the given experimental conditions. Finally, it is of great interest to find that the protrusive nanostructures can be selectively dissolved in 20% KOH solution. Since the nanowords can be easily 'written' by friction-induced fabrication and 'erased' through selective etching on a quartz surface, this friction-induced method opens up new opportunities for future nanofabrication.

No MeSH data available.


Related in: MedlinePlus

Effect of the number of scratching cycles and normal load on the nanofabrication. The effect of (a) the number of scratching cycles N and (b) normal load Fn on the height and volume of the friction-induced nanolines on quartz surface.
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Figure 3: Effect of the number of scratching cycles and normal load on the nanofabrication. The effect of (a) the number of scratching cycles N and (b) normal load Fn on the height and volume of the friction-induced nanolines on quartz surface.

Mentions: To investigate the effect of line-scratching cycles N and normal load Fn on the fabrication, both the height and volume of the nanolines were calculated with the original quartz surface as the base level. As shown in Figure 3a, under a normal load of 5 μN, the height of nanolines increases quickly in the initial scratching cycles and attains 2.8 nm after 150 line-scratch cycles. After 100 line-scratch cycles, the height of nanolines increases rapidly under low loads then reaches 4.0 nm under Fn= 26 μN (Figure 3b).


Friction-induced nanofabrication method to produce protrusive nanostructures on quartz.

Song C, Li X, Yu B, Dong H, Qian L, Zhou Z - Nanoscale Res Lett (2011)

Effect of the number of scratching cycles and normal load on the nanofabrication. The effect of (a) the number of scratching cycles N and (b) normal load Fn on the height and volume of the friction-induced nanolines on quartz surface.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211397&req=5

Figure 3: Effect of the number of scratching cycles and normal load on the nanofabrication. The effect of (a) the number of scratching cycles N and (b) normal load Fn on the height and volume of the friction-induced nanolines on quartz surface.
Mentions: To investigate the effect of line-scratching cycles N and normal load Fn on the fabrication, both the height and volume of the nanolines were calculated with the original quartz surface as the base level. As shown in Figure 3a, under a normal load of 5 μN, the height of nanolines increases quickly in the initial scratching cycles and attains 2.8 nm after 150 line-scratch cycles. After 100 line-scratch cycles, the height of nanolines increases rapidly under low loads then reaches 4.0 nm under Fn= 26 μN (Figure 3b).

Bottom Line: The height of these nanostructures increases with the increase of the number of scratching cycles or the normal load.Further analysis reveals that during scratching, a contact pressure ranged from 0.4Py to Py (Py is the critical yield pressure of quartz) is apt to produce protuberant nanostructures on quartz under the given experimental conditions.Finally, it is of great interest to find that the protrusive nanostructures can be selectively dissolved in 20% KOH solution.

View Article: PubMed Central - HTML - PubMed

Affiliation: Tribology Research Institute, National Traction Power Laboratory, Southwest Jiaotong University, Chengdu, Sichuan Province 610031, People's Republic of China. linmao@swjtu.edu.cn.

ABSTRACT
In this paper, a new friction-induced nanofabrication method is presented to fabricate protrusive nanostructures on quartz surfaces through scratching a diamond tip under given normal loads. The nanostructures, such as nanodots, nanolines, surface mesas and nanowords, can be produced on the target surface by programming the tip traces according to the demanded patterns. The height of these nanostructures increases with the increase of the number of scratching cycles or the normal load. Transmission electron microscope observations indicated that the lattice distortion and dislocations induced by the mechanical interaction may have played a dominating role in the formation of the protrusive nanostructures on quartz surfaces. Further analysis reveals that during scratching, a contact pressure ranged from 0.4Py to Py (Py is the critical yield pressure of quartz) is apt to produce protuberant nanostructures on quartz under the given experimental conditions. Finally, it is of great interest to find that the protrusive nanostructures can be selectively dissolved in 20% KOH solution. Since the nanowords can be easily 'written' by friction-induced fabrication and 'erased' through selective etching on a quartz surface, this friction-induced method opens up new opportunities for future nanofabrication.

No MeSH data available.


Related in: MedlinePlus