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Generating and measuring the anisotropic elastic behaviour of Co thin films with oriented surface nano-strings on micro-cantilevers.

Madurga V, Vergara J, Favieres C - Nanoscale Res Lett (2011)

Bottom Line: The anisotropic elastic behaviour of these Co films was determined by measuring the changes that took place in the resonant frequency of each micro-cantilever after this process of creating differently oriented plasma coatings had been completed.This differential procedure allowed us to determine the difference between the Young's modulus of the different films based on the different direction of the nano-strings.This difference was determined to be, at least, the 20% of the Young's modulus of the bulk Co.PACS: 62.25.-g; 81.16.Rf; 68.60.Bs; 81.15.Fg; 68.37.Ef; 85.85.+j.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratory of Magnetism, Department of Physics, Public University of Navarre, Campus Arrosadía s/n, Pamplona 31006, Spain. vmadurga@unavarra.es.

ABSTRACT
In this research, the elastic behaviour of two Co thin films simultaneously deposited in an off-normal angle method was studied. Towards this end, two Si micro-cantilevers were simultaneously coated using pulsed laser deposition at an oblique angle, creating a Co nano-string surface morphology with a predetermined orientation. The selected position of each micro-cantilever during the coating process created longitudinal or transverse nano-strings. The anisotropic elastic behaviour of these Co films was determined by measuring the changes that took place in the resonant frequency of each micro-cantilever after this process of creating differently oriented plasma coatings had been completed. This differential procedure allowed us to determine the difference between the Young's modulus of the different films based on the different direction of the nano-strings. This difference was determined to be, at least, the 20% of the Young's modulus of the bulk Co.PACS: 62.25.-g; 81.16.Rf; 68.60.Bs; 81.15.Fg; 68.37.Ef; 85.85.+j.

No MeSH data available.


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Surface nano morphology of two simultaneously Co coated MCLs: different nano-strings were generated. (a) Photo of a Co-coated MCL mounted in the STM sample holder for surface imaging. (b) STM image of the surface morphology of a Co-coated PA-MCL demonstrating the generation of the transverse nano-strings for the off-normal PLD. (c) STM image corresponding to the surface morphology of a Co-coated PE-MCL with the nano-strings in the longitudinal direction. These nano-scale patterns were visible in addition to the special elastic and mechanical properties of the MCLs.
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Figure 3: Surface nano morphology of two simultaneously Co coated MCLs: different nano-strings were generated. (a) Photo of a Co-coated MCL mounted in the STM sample holder for surface imaging. (b) STM image of the surface morphology of a Co-coated PA-MCL demonstrating the generation of the transverse nano-strings for the off-normal PLD. (c) STM image corresponding to the surface morphology of a Co-coated PE-MCL with the nano-strings in the longitudinal direction. These nano-scale patterns were visible in addition to the special elastic and mechanical properties of the MCLs.

Mentions: The results for the off-normal Co-coated MCLs are different to those for the Au -coated MCLs. Figure 3b shows the surface morphology of a Co-coated PA-MCL, demonstrating the generation of the transverse nano-strings. Figure 3c shows the surface morphology of a Co-coated PE-MCL with longitudinal nano-strings. The average width of the nano-strings was 12 nm. This nano-scale patterned was correlated with the elastic and mechanical properties of the MCLs, as shown in the next results.


Generating and measuring the anisotropic elastic behaviour of Co thin films with oriented surface nano-strings on micro-cantilevers.

Madurga V, Vergara J, Favieres C - Nanoscale Res Lett (2011)

Surface nano morphology of two simultaneously Co coated MCLs: different nano-strings were generated. (a) Photo of a Co-coated MCL mounted in the STM sample holder for surface imaging. (b) STM image of the surface morphology of a Co-coated PA-MCL demonstrating the generation of the transverse nano-strings for the off-normal PLD. (c) STM image corresponding to the surface morphology of a Co-coated PE-MCL with the nano-strings in the longitudinal direction. These nano-scale patterns were visible in addition to the special elastic and mechanical properties of the MCLs.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211413&req=5

Figure 3: Surface nano morphology of two simultaneously Co coated MCLs: different nano-strings were generated. (a) Photo of a Co-coated MCL mounted in the STM sample holder for surface imaging. (b) STM image of the surface morphology of a Co-coated PA-MCL demonstrating the generation of the transverse nano-strings for the off-normal PLD. (c) STM image corresponding to the surface morphology of a Co-coated PE-MCL with the nano-strings in the longitudinal direction. These nano-scale patterns were visible in addition to the special elastic and mechanical properties of the MCLs.
Mentions: The results for the off-normal Co-coated MCLs are different to those for the Au -coated MCLs. Figure 3b shows the surface morphology of a Co-coated PA-MCL, demonstrating the generation of the transverse nano-strings. Figure 3c shows the surface morphology of a Co-coated PE-MCL with longitudinal nano-strings. The average width of the nano-strings was 12 nm. This nano-scale patterned was correlated with the elastic and mechanical properties of the MCLs, as shown in the next results.

Bottom Line: The anisotropic elastic behaviour of these Co films was determined by measuring the changes that took place in the resonant frequency of each micro-cantilever after this process of creating differently oriented plasma coatings had been completed.This differential procedure allowed us to determine the difference between the Young's modulus of the different films based on the different direction of the nano-strings.This difference was determined to be, at least, the 20% of the Young's modulus of the bulk Co.PACS: 62.25.-g; 81.16.Rf; 68.60.Bs; 81.15.Fg; 68.37.Ef; 85.85.+j.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratory of Magnetism, Department of Physics, Public University of Navarre, Campus Arrosadía s/n, Pamplona 31006, Spain. vmadurga@unavarra.es.

ABSTRACT
In this research, the elastic behaviour of two Co thin films simultaneously deposited in an off-normal angle method was studied. Towards this end, two Si micro-cantilevers were simultaneously coated using pulsed laser deposition at an oblique angle, creating a Co nano-string surface morphology with a predetermined orientation. The selected position of each micro-cantilever during the coating process created longitudinal or transverse nano-strings. The anisotropic elastic behaviour of these Co films was determined by measuring the changes that took place in the resonant frequency of each micro-cantilever after this process of creating differently oriented plasma coatings had been completed. This differential procedure allowed us to determine the difference between the Young's modulus of the different films based on the different direction of the nano-strings. This difference was determined to be, at least, the 20% of the Young's modulus of the bulk Co.PACS: 62.25.-g; 81.16.Rf; 68.60.Bs; 81.15.Fg; 68.37.Ef; 85.85.+j.

No MeSH data available.


Related in: MedlinePlus