Porphyrin-based photocatalytic lithography.
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.
Bearinger
Jane P
JP
Physical Sciences Directorate, AP Division, Lawrence Livermore National Laboratory, L-211, 7000 East Avenue, Livermore, California 94550, USA. bearinger1@llnl.gov
Stone
Gary
G
Christian
Allen T
AT
Dugan
Lawrence
L
Hiddessen
Amy L
AL
Wu
Kuang Jen J
KJ
Wu
Ligang
L
Hamilton
Julie
J
Stockton
Cheryl
C
Hubbell
Jeffrey A
JA
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
D017319:Photosensitizing Agents; D011166:Porphyrins