O59 Low power visible and polychromatic (visible + near IR) light enhances sensitivity of tumor cells to cytolytic activity of natural killers

Abstract

This chapter discusses the as-quenched microstructures in Fe–25Cr–20Ni-based melt-spun and sputtered alloys. The microstructure morphology and the phase type encountered in the as-quenched Fe–25Cr–20Ni steels are liable to contain high segregation coefficients elements such as sulfur, carbon, or boron. These steels are prepared by melt spinning or sputtering. The sputtering targets are massive or compacted powder mixtures; the sputtered films obtained have approximately the chemical composition of the targets. As opposed to ribbons, sputtered films crystalline structure is composed, at room temperature, of a great amount of b.c.c. metastable ferrite. The microstructure is characterized by very fine regular grains with a 10 nm average size, in agreement with the calculated value from Scherrer's law relative to the half-intensity width of X-ray lines. This chapter also discusses the effects of sulfur, carbon, and boron addition on microstructures.