Reminder: Seminar Jan. 24 at 4pm: Surface Metrology Using Peelable Polymer Coatings

> Interested?
> Come to Varian Building (second floor) Rm #208 on Thursday January 24,
> 2008 at 4:00 p.m. Professor Hamilton of University of
> Wisconsin-Platteville will present a seminar on peelable polymer
> coatings - abstract attached.
>
> Diamonds in Washington, Volcanic Dust in Hawaii and Dark Matter:
> Surface Metrology Using First Contact Polymers
>
> Professor James P. Hamilton1,2
> 1Department of Chemistry and Engineering Physics, University of
> Wisconsin-Platteville, 1 University Plaza, Platteville, WI 53818
> 2Photonic Cleaning Technologies, PO Box 435, Platteville, WI 53818
>
>
>
> Nanotube doped, ESD free, peelable polymer coatings for surface
> protection, nanoreplication, cleaning and dust mitigation have been
> developed and successfully used on diverse surfaces. Some of the
> exciting metrology we have performed will be discussed using these
> designer polymers on high power laser optics; the Hope Diamond in
> Washington; the W.M. Keck telescope on Mauna Kea in Hawaii; mirrors
> for Hubble; CCD's for the 520 megapixel Dark Energy Survey Camera
> being built at Fermilab and CDMS ZIP detector surfaces.
> Research in our labs has resulted in novel polymeric stripcoatings
> that are applied as a liquid and subsequently peeled off the substrate
> as a solid film. These polymer blend solutions safely clean and
> protect a wide variety of nanostructured surfaces and leave the
> surface almost atomically clean and "space ready"(NASA). Contaminant
> removal was monitored by a variety of techniques including Nomarski,
> Atomic Force and Scanning Electron Microscopy as well as XPS. In
> addition, our data demonstrates that the material safely removes
> particulate contamination and finger oils from microstructures such as
> the 300nm wide lines on diffraction gratings and similar submicron
> features on Si wafers. These nanosurfaces are also replicated with
> high fidelity down to well below 50nm. Recent results also
> demonstrate YAG laser damage thresholds after cleaning on coated BK7
> of 15J/cm2 at 20ns and 20Hz (i.e. good as new).
>
> <Stanford CDMS abstract.doc>
>
>
>
>
> _____-----_____-----_____
> Astrid Tomada
> Department of Physics
> Stanford University
> atomada@stanford.edu
> _____-----_____-----_____