title: Porphyrin-based photocatalytic lithography.
abstract: Photocatalytic lithography couples light with photoreactive coated mask materials to pattern surface chemistry. We excite porphyrins to create radical species that photocatalytically oxidize, and thereby pattern, chemistries in the local vicinity. The technique advantageously is suited for use with a wide variety of substrates. It is fast and robust, and the wavelength of light does not limit the resolution of patterned features. We have patterned proteins and cells to demonstrate the utility of photocatalytic lithography in life science applications.
authors.affiliation: Physical Sciences Directorate, AP Division, Lawrence Livermore National Laboratory, L-211, 7000 East Avenue, Livermore, California 94550, USA. bearinger1@llnl.gov
authors.forename: Jane P
authors.initials: JP
authors.lastname: Bearinger
authors.forename: Gary
authors.initials: G
authors.lastname: Stone
authors.forename: Allen T
authors.initials: AT
authors.lastname: Christian
authors.forename: Lawrence
authors.initials: L
authors.lastname: Dugan
authors.forename: Amy L
authors.initials: AL
authors.lastname: Hiddessen
authors.forename: Kuang Jen J
authors.initials: KJ
authors.lastname: Wu
authors.forename: Ligang
authors.initials: L
authors.lastname: Wu
authors.forename: Julie
authors.initials: J
authors.lastname: Hamilton
authors.forename: Cheryl
authors.initials: C
authors.lastname: Stockton
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Hubbell
mesh_terms: D000327:Adsorption; D001690:Biological Science Disciplines / Q000379:methods; D002384:Catalysis; D013058:Mass Spectrometry; D018625:Microscopy, Atomic Force; D010777:Photochemistry / Q000379:methods*; D017319:Photosensitizing Agents / Q000737:chemistry; D011166:Porphyrins / Q000737:chemistry*; D013053:Spectrophotometry; D013499:Surface Properties
chemical_list: D017319:Photosensitizing Agents; D011166:Porphyrins