Upcoming Events

Magnetic Smart Materials (MS) Applied to X-ray Optics

July 25, 2013 10:00AM to 11:00AM
Presenter 
Melville Ulmer, Northwestern University
Location 
Building 438, Room C010
Type 
Seminar
Series 
XSD/OPT Special Presentation
Abstract:
MSMs can be used to generate strong stresses when a magnetic field is imposed. The stresses can, in principle, be used to actively deform an optic. The current research is supported by NASA with the goal of developing technology capable of replacing classical grinding and polishing to produce [affordable] X-ray telescopes with point spread functions on the oder of 1-10 micro-radians. I will describe potential advantages over piezeo which include simplicity, as rapid as you need (MHz) response times, and the potential to remove mid-frequency ripple from glass substrates.