Here we report a new paradigm that enhances adhesion of films on substrates via designing rational kirigami cuts in the films without changing the thickness, rigidity or adhesiveness of the films. We find that the effective enhancement of adhesion by kirigami is due to (i) the shear-lag effect of the film segments; (ii) partial debonding at the film segments’ edges; and (iii) compatibility of kirigami films with.
Kirigami enhances film adhesion† Ruike Zhao, a Shaoting Lin,a Hyunwoo Yuka and Xuanhe Zhao *ab Structures of thin films bonded on substrates have been used in technologies as diverse as flexible electronics, soft robotics, bio-inspired adhesives, thermal-barrier coatings, medical bandages, wearable devices and living devices.
We find that the effective enhancement of adhesion by kirigami is due to i) shear-lag effect of the film segments; ii) partial debonding at the film segments’ edges; and iii) compatibility of …
3/28/2018 · We find that the effective enhancement of adhesion by kirigami is due to (i) the shear-lag effect of the film segments; (ii) partial debonding at the film segments’ edges; and (iii) compatibility of kirigami films with inhomogeneous deformation of substrates.
This new mechanism on enhancing film adhesion by kirigami has been validated by numerical simulation and experiments (Fig. 2-4), and its application has been demonstrated by the example of kirigami bandage that achieve much enhanced adhesion on skin without changing thickness or rigidity of films or film-substrate interfaces (Fig. 4). In particular, we find that the kirigami film, Electronic Supplementary Information for Kirigami Enhances Film Adhesion Ruike Zhaoa, Shaoting Lina, Hyunwoo Yuka, and Xuanhe Zhao*ab a Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, E-mail: zhaox@mit.edu b Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, …
3/27/2018 · Through these experiments, Ruike identified three main parameters that give kirigami films their adhesive properties: shear-lag, in which shear deformation of film can reduce the strain on other …
Spatially controlled layouts of elasticity can provide enhanced adhesion over homogeneous systems. Emerging techniques in kirigami , where designed cuts in materials impart highly tunable stiffness and geometry, offer an intriguing approach to create well-defined layouts of prescribed elastic regions. Here, we show that kirigami -inspired structures at interfaces provide a new mechanism to …
3/27/2018 · Through these experiments, Ruike identified three main parameters that give kirigami films their adhesive properties: shear-lag, in which shear deformation of film can reduce the strain on other parts of the film; partial debonding, in which the film segments around an open slit maintain a partial bond to the underlying surface; and inhomogenous deformation, in which a film can maintain its overall.
3/30/2018 · Zhao identified the three main parameters that give kirigami films their adhesive properties: shear-lag, in which shear deformation reduces the strain on other parts of the film; partial debonding…
