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).
No comments:
Post a Comment