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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

Nanofabrication in air and in vacuum. AFM images of nanolines on quartz surface created (a) in air and (b) in vacuum, (c) comparison of the height of nanolines on quartz fabricated in air and in vacuum.
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Figure 5: Nanofabrication in air and in vacuum. AFM images of nanolines on quartz surface created (a) in air and (b) in vacuum, (c) comparison of the height of nanolines on quartz fabricated in air and in vacuum.

Mentions: In order to elucidate the effect of the oxidation and the oxygen atmosphere on the formation of hillock-like nanostructures on quartz surface, nanolines have been fabricated both in air and in vacuum with a pressure lower than 2.7 × 10-4 Pa. As shown in Figure 5, after 100 line-scratch cycles under Fn = 5 μN, the height of the nanolines created in vacuum is almost the same as those created in air. Clearly, the oxygen atmosphere shows a neglectable effect on the friction-induced nanofabrication on quartz surface. Similar to the formation of hillocks on silicon surfaces, the mechanical interaction may be the essential factor for the generation of protrusive nanostructures on quartz surfaces.


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)

Nanofabrication in air and in vacuum. AFM images of nanolines on quartz surface created (a) in air and (b) in vacuum, (c) comparison of the height of nanolines on quartz fabricated in air and in vacuum.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 5: Nanofabrication in air and in vacuum. AFM images of nanolines on quartz surface created (a) in air and (b) in vacuum, (c) comparison of the height of nanolines on quartz fabricated in air and in vacuum.
Mentions: In order to elucidate the effect of the oxidation and the oxygen atmosphere on the formation of hillock-like nanostructures on quartz surface, nanolines have been fabricated both in air and in vacuum with a pressure lower than 2.7 × 10-4 Pa. As shown in Figure 5, after 100 line-scratch cycles under Fn = 5 μN, the height of the nanolines created in vacuum is almost the same as those created in air. Clearly, the oxygen atmosphere shows a neglectable effect on the friction-induced nanofabrication on quartz surface. Similar to the formation of hillocks on silicon surfaces, the mechanical interaction may be the essential factor for the generation of protrusive nanostructures on quartz surfaces.

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