Magnetic smart material application to synchrotron X-ray optics: prospects and current progress

Melville P. Ulmer*, Daniel Quispe, Donald B. Buchholz, Yip Wah Chung, Jian Cao, Konstantina Kritikos

*Corresponding author for this work

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

1 Scopus citations


Magnetic smart materials (MSMs) offer an alternative to the typical piezo-electric actuators that are currently being used to control X-ray optics on beam lines. MSMs combined with an overcoating of a magnetic hard material means a deformable mirror whose non-reflecting side is coated with a MSM plus magnetic hard overcoat can work in a power-off mode. The process works by using an electromagnet (EM) to impose a magnetic field in the bilayer of MSM and magnetic hard overcoat. Once the EM is turned off, the mirror settles to a new shape within minutes. The new shape can then remain intact for days. Since the EM is not fixed to the mirror, the exact placement of the magnetic field can be adjusted by relocating the EM. This feature allows for fine-scale adjustments and avoids the "dead pixel" replacement problem common with piezo patches that are attached to the mirror. We will give an overview and a progress report.

Original languageEnglish (US)
Title of host publicationAdvances in X-Ray/EUV Optics and Components XVII
EditorsAli M. Khounsary, Hidekazu Mimura, Christian Morawe
ISBN (Electronic)9781510654648
StatePublished - 2022
EventAdvances in X-Ray/EUV Optics and Components XVII 2022 - San Diego, United States
Duration: Aug 22 2022Aug 23 2022

Publication series

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


ConferenceAdvances in X-Ray/EUV Optics and Components XVII 2022
Country/TerritoryUnited States
CitySan Diego


  • Active X-ray optics
  • Terfenol-D
  • deformable mirrors
  • magentostriction

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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