@inproceedings{8af616fea18044ef95caedb3e2851b22,
title = "Shaping Si, NiCo, and glass substrates via stresses in the coatings",
abstract = "Here we report progress toward the fabrication of adaptive or active Si X-ray mirrors via a two step process. The first step is to curve a Si flat and then coat it with Terfenol-D that will allow the shape control via the application of a magnetic field. The goal is to create a mirror whose local (a few mm-length scale) slope can be changed and left for several hours or more. The current work described here was done in on Si to demonstrate the ability to produce the initial curvature, and in parallel, work to on magnetically hard NiCo 5 cm x 5 cm square plus on a glass sample. The glass sample was used a proto-type to model making changes in two different locations on a mirror. The NiCo sample was used to show that a magnetic field can be retained in a magnetically hard substrate such that the magnetically induced stress in the Terfenol-D was able to maintain a deformation for as long as time permitted to make the measurement which was 71 hours.",
keywords = "X-ray optics, active or adaptive optics, coating processes, magnetic smart materials",
author = "Xiaoli Wang and Youwei Yao and Shi Ye and Tianchen Liu and Lahsen Assoufid and Jian Cao and Ulmer, {M. P.}",
note = "Funding Information: This work made use of Central Facilities at Northwestern University: Electron Probe Instrumentation Center and Optical Microscopy & Metallography facility (DMR-1121262) supported by the National Science Foundation at Northwestern University Materials Research Science and Engineering Center. We also thank the ISEN center at Northwestern University for providing funds for purchasing additional sputtering guns that were used for a portion of the coating work done here. Work done by Argonne National Laboratory was supported by US Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No.DE-AC02-06CH11357. Publisher Copyright: {\textcopyright} 2016 SPIE.; Adaptive X-Ray Optics IV ; Conference date: 28-08-2016 Through 29-08-2016",
year = "2016",
doi = "10.1117/12.2237785",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "O'Dell, {Stephen L.} and Khounsary, {Ali M.}",
booktitle = "Adaptive X-Ray Optics IV",
}