title: Optical planar waveguide for cell counting.
abstract: Low cost counting of cells has medical applications in screening, military medicine, disaster medicine, and rural healthcare. In this report, we present a shallow, buried, planar waveguide fabricated by potassium ion exchange in glass that enables low-cost and rapid counting of metal-tagged objects that lie in the evanescent field of the waveguide. Laser light transmitted through the waveguide was attenuated proportionately to the presence of metal-coated microstructures fabricated from photoresist. This technology enables the low-cost enumeration of cells from blood, urine, or other biofluids.
authors.forename: John
authors.initials: J
authors.lastname: Leblanc
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Mueller
authors.forename: Adrian
authors.initials: A
authors.lastname: Prinz
authors.forename: Manish J
authors.initials: MJ
authors.lastname: Butte