Grain flash temperatures in diamond wire sawing of silicon

Characterization of the Diamond Wire Sawing Process for Monocrystalline Silicon by Raman Spectroscopy and SIREX Polarimetry

A detailed approach to evaluate the sub-surface damage of diamond wire-sawn monocrystalline silicon wafers relating to the sawing process is presented. Residual stresses, the presence of amorphous silicon and microcracks are considered and related to diamond wire velocity and cutting ability. In particular, the degree of amorphization of the wafer surface is analyzed, as it may affect the etchi...

Revolution in Diamond Cutting: Laser Sawing of Diamond Crystals

Laser sawing of diamonds is beginning to revolutionize the diamond-cutting industry. Not only does the laser saw offer savings in time and money, but it also enables the cutting of material virtually unworkable by conventional methods and makes available an almost limitless assortment of fancy shapes. This article describes the components and operation of the laser saw, as well as the situation...

Measurement and Analysis of Wire Sawing Induced Residual Stress in Photovoltaic Silicon Wafers

Assessing the Quality of X-ray Optic Surfaces of Si Crystals Cut by Diamond-Wire and Rotating-Blade Sawing Techniques

The next generation of X-ray diffraction optics will benefit from crystal surfaces with very high quality (extremely flat and strain-free), but knowledge on how to achieve such surfaces, and how surface imperfections affect the diffraction properties, is sparse in the literature. As a first step toward initializing a systematic study on this topic, we evaluate in this paper the surface quality ...

Mapping temperatures and temperature gradients during flash heating in a diamond-anvil cell.

Here, we couple two-dimensional, 4-color multi-wavelength imaging radiometry with laser flash heating to determine temperature profiles and melting temperatures under high pressures in a diamond-anvil cell. This technique combines the attributes of flash heating (e.g., minimal chemical reactions, thermal runaway, and sample instability), with those of multi-wavelength imaging radiometry (e.g., ...