Cylindrical channel plasmon resonance for single-molecule sensing

Quasi-3D nanoplasmonic structures are investigated, and the interaction of cavity and surface plasmon modes in Au cylindrical channels is discussed. By fastidious choice of geometrical parameters, it is shown that localized surface plasmon resonances (LSPR) inside the channels are established and are highly sensitive to changes in the local dielectric environment. In this study, cylindrical channels are added to the surface of gold nanopillars whose geometry otherwise permits LSPR. The inclusion of the channels creates a plasmonic waveguide supporting whispering gallery mode (WGM) cylindrical channel plasmons, which result from the coupled hybridized field. FDTD simulations reveal the possibility of single-molecule sensitivity of these cylindrical channel nanopillars (CCNP) by demonstrating near-IR wavelength shifts in the detected reflectance from a modeled array of CCNPs in various dielectric environments. The reported sensitivity of this metamaterial provides a platform for SPR single-molecule studies and exhibits potential for label-free biological and chemical sensing.

[1]  M. C. Hutley,et al.  The use of apodization to reduce stray light from diffraction gratings , 1982 .

[2]  Y. Fainman,et al.  High-resolution surface plasmon resonance sensor based on linewidth-optimized nanohole array transmittance. , 2006, Optics letters.

[3]  U. Fano.  Effects of Configuration Interaction on Intensities and Phase Shifts , 1961 .

[4]  Federico Capasso,et al.  Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability. , 2010, Nano letters.

[5]  P. Nordlander,et al.  A Hybridization Model for the Plasmon Response of Complex Nanostructures , 2003, Science.

[6]  Y. Fainman,et al.  Plasmonic Sensing of Biological Analytes Through Nanoholes , 2008, IEEE Sensors Journal.

[7]  Garnett W. Bryant,et al.  Optical properties of coupled metallic nanorods for field-enhanced spectroscopy , 2005 .

[8]  Romain Quidant,et al.  Plasmon near-field coupling in metal dimers as a step toward single-molecule sensing. , 2009, ACS nano.

[9]  K. Saraswat,et al.  Nanometre-scale germanium photodetector enhanced by a near-infrared dipole antenna , 2008 .

[10]  R. W. Christy,et al.  Optical Constants of the Noble Metals , 1972 .

[11]  G S Kino,et al.  Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas. , 2005, Physical review letters.

[12]  George C. Schatz,et al.  A surface‐enhanced hyper‐Raman and surface‐enhanced Raman scattering study of trans‐1,2‐bis(4‐pyridyl)ethylene adsorbed onto silver film over nanosphere electrodes. Vibrational assignments: Experiment and theory , 1996 .

[13]  A. Haes,et al.  A unified view of propagating and localized surface plasmon resonance biosensors , 2004, Analytical and bioanalytical chemistry.

[14]  E. Palik.  Handbook of Optical Constants of Solids , 1997 .

[15]  O. Martin,et al.  Resonant Optical Antennas , 2005, Science.

[16]  H. Atwater,et al.  Plasmonics for improved photovoltaic devices. , 2010, Nature materials.

[17]  R. Dasari,et al.  Single Molecule Detection Using Surface-Enhanced Raman Scattering (SERS) , 1997 .

[18]  M. Garcia-Parajo,et al.  Optical antennas focus in on biology , 2008 .

[19]  Wei Zhou,et al.  Tunable subradiant lattice plasmons by out-of-plane dipolar interactions. , 2011, Nature nanotechnology.

[20]  Guohui Xiao,et al.  Plasmonic gold mushroom arrays with refractive index sensing figures of merit approaching the theoretical limit , 2013, Nature Communications.

[21]  A. Otto.  Excitation of nonradiative surface plasma waves in silver by the method of frustrated total reflection , 1968 .

[22]  In-Yong Park,et al.  High-harmonic generation by resonant plasmon field enhancement , 2008, Nature.

[23]  Mikael Käll,et al.  Refractometric sensing using propagating versus localized surface plasmons: a direct comparison. , 2009, Nano letters.

[24]  Chongjun Jin,et al.  Tuning Triangular Prism Dimer into Fano Resonance for Plasmonic Sensor , 2013, Plasmonics.

[25]  George C. Schatz,et al.  Spatially resolved surface enhanced second harmonic generation: Theoretical and experimental evidence for electromagnetic enhancement in the near infrared on a laser microfabricated Pt surface , 1989 .

[26]  R. H. Ritchie.  Plasma Losses by Fast Electrons in Thin Films , 1957 .

[27]  Zhaowei Liu,et al.  Plasmonic structured illumination microscopy. , 2010, Nano letters.

[28]  E. Kretschmann,et al.  Decay of non radiative surface plasmons into light on rough silver films. Comparison of experimental and theoretical results , 1972 .

[29]  Ronen Adato,et al.  In-situ ultra-sensitive infrared absorption spectroscopy of biomolecule interactions in real time with plasmonic nanoantennas , 2013, Nature Communications.

[30]  Alexandre G. Brolo,et al.  Plasmonics for future biosensors , 2012, Nature Photonics.

[31]  Zongfu Yu,et al.  Large Single-Molecule Fluorescence Enhancements Produced by a Bowtie Nanoantenna , 2009 .

[32]  Peter Nordlander,et al.  Fano resonances in plasmonic nanoparticle aggregates. , 2009, The journal of physical chemistry. A.

[33]  Younan Xia,et al.  Localized surface plasmon resonance spectroscopy of single silver nanocubes. , 2005, Nano letters.