Nondestructive Adhesion Measurement for Thin Films.

Novel Adhesion Test for Environmentally Assisted Fracture in Thin Films

Thin films, used in various applications and devices, must strongly adhere to their substrates. Due to various processing and storage environments that devices can be exposed to, water may be introduced into the system. If residual stresses are present in a thin film, delamination propagation can be driven by water without the assistance of an externally applied mechanical force. It is extremel...

Nondestructive Readout Scheme for Thin Film Memories

If a magnetic bit in a thin film memory array is driven in the hard direction, the changing flux produces eddy currents in the surrounding conducting surfaces. It has been pointed out by Pohm and others that the eddy field produced by these currents always tends to restore the bit magnetization to its original direction. If this eddy field were strong enough at the end of the word drive pulse, ...

Double Laser for Depth Measurement of Thin Films of Ice

The use of thin films is extensive in both science and industry. We have created an experimental system that allows us to measure the thicknesses of thin films (with typical thicknesses of around 1 µm) in real time without the need for any prior knowledge or parameters. Using the proposed system, we can also measure the refractive index of the thin film material exactly under the same experimen...

Al capping layers for nondestructive x-ray photoelectron spectroscopy analyses of transition-metal nitride thin films

Contact instability in adhesion and debonding of thin elastic films.

Based on experiments and 3D simulations, we show that a soft elastic film during adhesion and debonding from a rigid flat surface undergoes morphological transitions to pillars, labyrinths, and cavities, all of which have the same lateral pattern length scale, lambda close to lambda/H approximately 3 for thick films, H > 1 microm . The linear stability analysis and experiments show a new thin f...