The thermostability and elasticity of spider dragline studied by synchrotron X-ray diffraction

Deformation in Metallic Glasses Studied by Synchrotron X-Ray Diffraction

High mechanical strength is one of the superior properties of metallic glasses which render them promising as a structural material. However, understanding the process of mechanical deformation in strongly disordered matter, such as metallic glass, is exceedingly difficult because even an effort to describe the structure qualitatively is hampered by the absence of crystalline periodicity. In sp...

Structural hysteresis in dragline spider silks induced by supercontraction: An x-ray fiber micro-diffraction study.

Interaction with water causes shrinkage and significant changes in the structure of spider dragline silks, which has been referred to as supercontraction in the literature. Preferred orientation or alignment of protein chains with respect to the fiber axis is extensively changed during this supercontraction process. Synchrotron x-ray micro-fiber diffraction experiments have been performed on Ne...

High-pressure phases of uranium monophosphide studied by synchrotron x-ray diffraction.

Reaction of CuO with hydrogen studied by using synchrotron-based x-ray diffraction

CuO and Cu2O powders were reacted by hydrogen to study the reduction mechanism and the ionic states of Cu (Cu2+, Cu and Cu). The reduction behaviour and the existence of an intermediate state were investigated by using synchrotron-based high-resolution in situ x-ray diffraction (S-XRD) techniques. The results revealed that CuO directly reduces to metallic Cu (Cu → Cu), under a normal flow of hy...

Tin whiskers studied by synchrotron radiation scanning X-ray micro-diffraction

A large number of Sn whiskers have been found on the Pb-free solder finish on leadframes used in consumer electronic products. Some of the whiskers on eutectic SnCu finishes are long enough to short the neighboring legs of the leadframe. Tin whisker growth is known to be a stress relief phenomenon. We have performed synchrotron radiation X-ray micro-diffraction analysis to measure the local str...