Optical Sensing with Simultaneous Electrochemical Control in Metal Nanowire Arrays
AbstractThis work explores the alternative use of noble metal nanowire systems in large-scale array configurations to exploit both the nanowires’ conductive nature and localized surface plasmon resonance (LSPR). The first known nanowire-based system has been constructed, with which optical signals are influenced by the simultaneous application of electrochemical potentials. Optical characterization of nanowire arrays was performed by measuring the bulk refractive index sensitivity and the limit of detection. The formation of an electrical double layer was controlled in NaCl solutions to study the effect of local refractive index changes on the spectral response. Resonance peak shifts of over 4 nm, a bulk refractive index sensitivity up to 115 nm/RIU and a limit of detection as low as 4.5 × 10−4 RIU were obtained for gold nanowire arrays. Simulations with the Multiple Multipole Program (MMP) confirm such bulk refractive index sensitivities. Initial experiments demonstrated successful optical biosensing using a novel form of particle-based nanowire arrays. In addition, the formation of an ionic layer (Stern-layer) upon applying an electrochemical potential was also monitored by the shift of the plasmon resonance. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
MacKenzie, R.; Fraschina, C.; Sannomiya, T.; Auzelyte, V.; Vörös, J. Optical Sensing with Simultaneous Electrochemical Control in Metal Nanowire Arrays. Sensors 2010, 10, 9808-9830.
MacKenzie R, Fraschina C, Sannomiya T, Auzelyte V, Vörös J. Optical Sensing with Simultaneous Electrochemical Control in Metal Nanowire Arrays. Sensors. 2010; 10(11):9808-9830.Chicago/Turabian Style
MacKenzie, Robert; Fraschina, Corrado; Sannomiya, Takumi; Auzelyte, Vaida; Vörös, Janos. 2010. "Optical Sensing with Simultaneous Electrochemical Control in Metal Nanowire Arrays." Sensors 10, no. 11: 9808-9830.