Light-Directed Writing of Chemically Tunable Narrow-Band Holographic Sensors (pages 250–254)
Ali K. Yetisen, Haider Butt, Fernando da Cruz Vasconcellos, Yunuen Montelongo, Colin A. B. Davidson, Jeff Blyth, Leon Chan, J. Bryan Carmody, Silvia Vignolini, Ullrich Steiner, Jeremy J. Baumberg, Timothy D. Wilkinson and Christopher R. Lowe
Version of Record online: 2 JAN 2014 | DOI: 10.1002/adom.201300375
This tunable holographic sensor offers interrogation and a reporting transducer as well as an analyte-responsive hydrogel, rendering it label-free and reusable. A single 6 ns laser pulse is used to fabricate holographic sensors consisting of silver nanoparticles arranged periodically within a polymer film. The tunability of the sensor is demonstrated through pH sensing of artificial urine and validated through computational modeling.