Shaping Si, NiCo, and glass substrates via stresses in the coatings

Xiaoli Wang; Youwei Yao; Shi Ye; Tianchen Liu; Lahsen Assoufid; Jian Cao; M. P. Ulmer

doi:10.1117/12.2237785

9 September 2016 Shaping Si, NiCo, and glass substrates via stresses in the coatings

Xiaoli Wang, Youwei Yao, Shi Ye, Tianchen Liu, Lahsen Assoufid, Jian Cao, M. P. Ulmer

Proceedings Volume 9965, Adaptive X-Ray Optics IV; 99650D (2016) https://doi.org/10.1117/12.2237785
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Xiaoli Wang, Youwei Yao, Shi Ye, Tianchen Liu, Lahsen Assoufid, Jian Cao, and M. P. Ulmer "Shaping Si, NiCo, and glass substrates via stresses in the coatings", Proc. SPIE 9965, Adaptive X-Ray Optics IV, 99650D (9 September 2016); https://doi.org/10.1117/12.2237785

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available