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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.

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Related in: MedlinePlus

Nanolines produced under various normal loads. AFM images (top) and cross-sectional profiles (bottom) of the friction-induced nanolines on quartz surface created by scratching under various normal loads. The number of scratching cycles N = 100.
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Figure 2: Nanolines produced under various normal loads. AFM images (top) and cross-sectional profiles (bottom) of the friction-induced nanolines on quartz surface created by scratching under various normal loads. The number of scratching cycles N = 100.

Mentions: It was observed that both the number of scratching cycles N and the normal load Fn contributed greatly to the creation of nanolines. As shown in Figure 1, the AFM images revealed that after 10 cycles of line-scratch test on quartz under a normal load Fn of 5 μN in atmosphere, a nanoline was generated along the scratching trace. With the increase in the number of line-scratch cycles N from 10 to 150, the height of the nanolines was found to grow from 0.6 to 2.8 nm. After 100 repeated line-scratch tests, the height of the nanolines in Figure 2 increased from 1.6 to 4.0 nm with the increase in Fn from 3 to 26 μN.


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)

Nanolines produced under various normal loads. AFM images (top) and cross-sectional profiles (bottom) of the friction-induced nanolines on quartz surface created by scratching under various normal loads. The number of scratching cycles N = 100.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 2: Nanolines produced under various normal loads. AFM images (top) and cross-sectional profiles (bottom) of the friction-induced nanolines on quartz surface created by scratching under various normal loads. The number of scratching cycles N = 100.
Mentions: It was observed that both the number of scratching cycles N and the normal load Fn contributed greatly to the creation of nanolines. As shown in Figure 1, the AFM images revealed that after 10 cycles of line-scratch test on quartz under a normal load Fn of 5 μN in atmosphere, a nanoline was generated along the scratching trace. With the increase in the number of line-scratch cycles N from 10 to 150, the height of the nanolines was found to grow from 0.6 to 2.8 nm. After 100 repeated line-scratch tests, the height of the nanolines in Figure 2 increased from 1.6 to 4.0 nm with the increase in Fn from 3 to 26 μN.

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