Effect of annealing on the size dependent deformation behavior of thin cobalt films on flexible substrates

Marx, Vera Maria; Cordill, Megan J.; Többens, Daniel M.; Kirchlechner, Christoph; Dehm, Gerhard

doi:10.1016/j.tsf.2017.01.011

Cited by 7 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparing the height image and profiles, which are rotated 90 degrees in Figure 2b from Figure 2a, it can be clearly seen that there is a higher density of regions of high strain or cracks (red streaks) in the DIC image that correspond to the wave crests compared the troughs. Thicker films fracture before similar thinner films and thicker films have lower average crack densities (larger average crack spacing) [16][17][18][19][20]. A similar result was observed in the wavy lines by the different crack densities.…”

Section: Resultssupporting

confidence: 64%

Crack Initiation of Printed Lines Predicted with Digital Image Correlation

Katsarelis

Глушко

Tonkin

et al. 2018

JOM

View full text Add to dashboard Cite

Printing of metallic films has been preferred over vacuum technologies for roll-to-roll processes because of faster processing times and lower processing costs. Films can be produced by depositing inks containing suspended metallic particles within a solvent and then heating the films to both remove the solvent and sinter the particles. The resulting printed structure and electrical and mechanical behavior of the printed films has been studied to better understand their electro-mechanical response to loading and eventual brittle fracture. This study evaluated the electro-mechanical behavior of 1.25-μm printed Ag films using in situ resistance and in situ imaging methods. Digital image correlation was utilized with confocal laser scanning microscope images to better visualize crack initiation during tensile straining. This technique showed that cracks initiated earlier in the thicker areas of the film (crests) than in lower areas (troughs) because of a higher density of printing defects and the increased thickness.

show abstract

Section: Resultssupporting

confidence: 64%

Crack Initiation of Printed Lines Predicted with Digital Image Correlation

Katsarelis

Глушко

Tonkin

et al. 2018

JOM

View full text Add to dashboard Cite

show abstract

“…In another study, annealing two-phase Co films prior to straining significantly increased the FCC phase. The annealing also led to the higher COS for films between 200 nm and 2 µm thickness, with increased necking deformation before TTC formation for thicker films compared to thinner films [ 121 ]. Therefore, room temperature phase transformations are another efficient way to increase the fracture resistance of metal films.…”

Section: Materials Influencesmentioning

confidence: 99%

Materials Engineering for Flexible Metallic Thin Film Applications

2022

View full text Add to dashboard Cite

More and more flexible, bendable, and stretchable sensors and displays are becoming a reality. While complex engineering and fabrication methods exist to manufacture flexible thin film systems, materials engineering through advanced metallic thin film deposition methods can also be utilized to create robust and long-lasting flexible devices. In this review, materials engineering concepts as well as electro-mechanical testing aspects will be discussed for metallic films. Through the use of residual stress, film thickness, or microstructure tailoring, all controlled by the film deposition parameters, long-lasting flexible film systems in terms of increased fracture or deformation strains, electrical or mechanical reliability, can be generated. These topics, as well as concrete examples, will be discussed. One objective of this work is to provide a toolbox with sustainable and scalable methods to create robust metal thin films for flexible, bendable, and stretchable applications.

show abstract

Micromechanics of substrate-supported thin films

Han

Wang

et al. 2017

Acta Mech. Sin.

View full text Add to dashboard Cite

Effect of annealing on the size dependent deformation behavior of thin cobalt films on flexible substrates

Cited by 7 publications

References 32 publications

Crack Initiation of Printed Lines Predicted with Digital Image Correlation

Crack Initiation of Printed Lines Predicted with Digital Image Correlation

Materials Engineering for Flexible Metallic Thin Film Applications

Micromechanics of substrate-supported thin films

Contact Info

Product

Resources

About