In situ x-ray diffraction analysis of 2D crack patterning in thin films

Nanoscale Metafoils with Enhanced Mechano-Optical Properties for Solar Radiation Isolation

“…At higher strain, necks gradually transform into through-thickness cracks. The evolution of tensile-induced deformation can be evaluated using in situ atomic force microscopy (AFM), SEM, X-ray diffraction, or electrical resistance measurements. ,− Here, as the patterned area compared to the total gauge length is small, relating the resistance change to the patterned area of interest is challenging, and the highly textured Al films are not suitable for XRD and sin 2 Ψ analysis. Thus, for recording the evolution of tensile-induced deformations/cracks in the unpatterned Al foils, we perform in situ AFM measurements during tensile straining.…”

Study of uniaxial deformation behavior of 50 nm-thick thin film of gold single crystal using in situ X-ray pole figure measurements

“…Cracking happens during tensile testing for metallic thin films on polymer substrates at relatively low deformation of about 3% for Ni [38] or Cu [39]. Even if cracks may be difficult to observe, no significant crack evidence has been reported for deformation up to 15% in very ductile materials such as gold [40].…”

Role of layer order on the equi-biaxial behavior of Al/Mo bilayers

“…While uniaxial testing does have significant merit, biaxial straining is more suited to the material system's application load. Furthermore, when combined with insitu X-ray diffraction (XRD) [1][2][3] multilayer film architectures can be examined more thoroughly by providing vital information about the mechanical behavior of different metals in multilayer nanolaminates [4,5]. Of further interest is to examine how the layer order of a simple bilayer system affects the mechanical behavior.…”

“…It has already been demonstrated that the addition of brittle adhesion or protective films generally leads to an embrittlement of a normally ductile film compared to single ductile films under uniaxial loading [6][7][8][9]. However, only few studies investigated the mechanical behavior of material systems, such as Au, Ni, and W/Cu, under biaxial loading conditions [2,3,10,11].…”

“…Thus, it is likely that the order of deposition between a rigid/brittle layer and a less rigid and ductile layer will affect the strain distribution. Both phenomena can be probed by the in-situ study of X-ray stress and full width at half-maximum FWHM (see references [23] and [3], respectively).…”