A robotic system is developed to automate the packing of polycrystalline silicon nuggets into a fragile fused silica crucible in CZ semiconductor wafer production. The highly irregular shapes of the nuggets make this a difficult and challenging task. In this system, nugget grasping is done with a three-cup suction gripper and nugget manipulation is attained with a 7 DOF SCARA manipulator. An op...

To obtain single crystals by solution growth, an exposed primary solidification surface in the appropriate, but often unknown, equilibrium alloy phase diagram is required. Furthermore, an appropriate crucible material is needed, necessary to hold the molten alloy during growth, without being attacked by it. Recently, we have used the comparison of realistic simulations with experimental differe...

“Experimental mathematics” has emerged in the past 25 years or so to become a competitive paradigm for research in the mathematical sciences. A workshop held at the Institute for Computational and Experimental Research in Mathematics (ICERM), July 21–25, 2014, explored emerging challenges of experimental mathematics in the rapidly changing era of modern computer technology. This report summariz...

A Robotic System is being developed to automate the crucible packing in the CZ semiconductor wafer production. It requires the delicate manipulation and packing of highly irregular shaped polycrystalline silicon nuggets, into a fragile glass crucible. Here an on-line algorithm is presented to plan the packing. It uses a method called Virtual Trial and Error. The on-line algorithm handles large ...

The compatibility of Reduced Activation Ferritic/Martensitic Steel (RAFM) with liquid Li and molten-salt Flibe have been characterized and accessed. Static compatibility tests were carried out in which the specimens were immersed into liquid Li or Flibe in isothermal autoclaves. Also carried out were compatibility tests in flowing liquid Li by thermal convection loops. In the case of liquid Li,...

The melting point of palladium was determined by measuring with an optical P3^rometer the ratio of brightness of the red light (X= 0.6528m) emitted by black bodies at the melting points of palladium and gold, respectively. The crucible method was shown to be more reliable than the wire method. Especial attention was given to the purity of the metals. The result obtained by the crucible method, ...

While sociology has historically not been a good interlocutor of war, this paper argues that the body has always known war, and that it is to the corporeal that we can turn in an attempt to develop a language to better speak of its myriad violences and its socially generative force. It argues that war is a crucible of social change that is prosecuted, lived and reproduced via the occupation and...

Exotic tales and dramatic details about Muslim women’s views of Bosnian society are uncommon. In fact, few Muslim women in Bosnia are overtly Islamic in appearance or action. Rather, they blend into a secularized society in which Islamic heritage provides traditions and values, not dogma. Despite this assimilation, 12 Bosnian women relate 3 different but connected features of their lives: the e...

In this work, we consider the feedback control of flows within the vertical Bridgman crystal growth process. We investigate the use of crucible rotation, via feedback control algorithms, in suppressing oscillatory flows in two prototypical vertical Bridgman crystal growth configurations—a laminar flow regime driven by a time-oscillatory furnace disturbance and a time-varying regime driven by st...