Investigation of magnetically smart films applied to correct the surface profile of light weight X-ray optics in two directions

Xiaoli Wang, Youwei Yao, Jian Cao, Semyon Vaynman, Michael E. Graham, Tianchen Liu, M. P. Ulmer*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


Our goal is to improve initially fabricated X-ray optics figures by applying a magnetic field to drive a magnetic smart material (MSM) coating on the non-reflecting side of the mirror. The consequent deformation of the surface should be three-dimensional. Here we will report on the results of working with a glass sample of 50x50x0.2 mm that has been coated with MSMs. The coated glass can be deformed in 3 dimensions and its surface profile was measured under our Zygo New View white light interferometer (WLI). The driving magnetic field was produced via a pseudo-magnetic write head made up of two permanent magnet posts. The magnet posts were moved about the bottom of the glass sample with a 3-d computer controlled translation stage. The system allowed four degrees of freedom of motion, i.e., up and down, side to side, back and forth, and rotation of the posts (3.175 mm diameter) about the vertical axis to allow us to change the orientation of the magnetic field in the (horizontal) plane of the sample. We established a finite element analysis (FEA) model to predict deformations and compare with the observed results in order to guide the application of the magnetically controlled MSMs to improve the future X-ray optics figures.

Original languageEnglish (US)
Title of host publicationOptics for EUV, X-Ray, and Gamma-Ray Astronomy VII
EditorsGiovanni Pareschi, Stephen L. O'Dell, Giovanni Pareschi, Stephen L. O'Dell
ISBN (Electronic)9781628417692, 9781628417692
StatePublished - 2015
EventOptics for EUV, X-Ray, and Gamma-Ray Astronomy VII - San Diego, United States
Duration: Aug 10 2015Aug 13 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOptics for EUV, X-Ray, and Gamma-Ray Astronomy VII
Country/TerritoryUnited States
CitySan Diego


  • Active or adaptive Optics
  • Magnetically smart material
  • Thin film
  • X-ray optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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