High-Precision MRF Mirror Polishing

A high precision CMOS current mirror/divider

A current mirror topology is proposed that provides very high precision, design insensitive up and down mirrored current, operation over a wide power supply range, straightforward design, and the possibility of conveniently obtaining a wide range of current divisions. This topology is appropriate for those applications in which precise current handling is necessary such as high accuracy A/D and...

Solving MRF Minimization by Mirror Descent

Markov Random Fields (MRF) minimization is a well-known problem in computer vision. We consider the augmented dual of the MRF minimization problem and develop a Mirror Descent algorithm based on weighted Entropy and Euclidean Projection. The augmented dual problem consists of maximizing a non-differentiable objective function subject to simplex and linear constraints. We analyze the convergence...

Ultra-precision Float Polishing of Optical Materials

Chemical mechanical polishing of titanium with colloidal silica containing hydrogen peroxide--mirror polishing and surface properties.

Chemical mechanical polishing (CMP) of cpTi (Ti) was carried out using two types of slurries, acidic and basic colloidal silica containing H2O2 up to 3 wt%, to obtain flat and mirror-polished surfaces without any contaminated and reacted layers. Polishing behavior and surface properties were investigated using AFM, EPMA, and XPS. Weight loss of Ti polished by CMP using the basic slurry was larg...

Stressed mirror polishing . nonaxisymmetric mirrors 1 : A technique for producing

The theoretical basis is developed for a technique to fabricate nonaxisymmetric mirrors. Stresses are applied to a mirror blank that would have the effect of elastically deforming a desired surface into a sphere. A sphere is then polished into the blank, and upon release of the applied stress, the spherical surface deforms into the desired one. The method can be applied iteratively, so arbitrar...