Surface Plasmon Resonance in Thin Films


Plasmonics promise radical breakthroughs in optics and electronics with applications such as optical patterning, wave guiding, microelectronics, sensors and actuators, surface-enhanced Raman scattering, solar energy harvesting and others. Of immense importance in this field are the Plasmonic Nano-Particles (PNPs), nanosized nonpercolating metallic objects that exhibit a Localized Surface Plasmon Resonance (LSPR).

The LSPR optical traits include resonantly enhanced light scattering, absorption and near-fields, all strongly dependent on particle size, shape, distribution, and the refractive index of the surrounding dielectric medium. However, if the promise of plasmonics is to materialise, both the scientific and the industrial community needs processing techniques that allow for an in-depth study and an easy fabrication of such systems. The above mentioned characteristics must be controlled and engineered in a manner that is ultra-fast, high-throughput and low-cost.

The laser processing method invented at NTU and presented in this patent offers control and tunability of the Local Surface Plasmon Resonance presented by nanoparticles that are either on top of or embedded in thin film materials.


  • Ultra-fast, facile, global, versatile, reproducible, writable technology.
  • Compatible with flexible substrates (PET, PEN, BOPP etc)
  • Comparatively low-cost, scalable and robust


  • Light harvesting in photovoltaics
  • Light out-coupling in Light Emitting Diodes (LED & OLED)
  • Product authentication and security (overt & covert coloured images)
  • Surface Enhanced Raman Scattering
  • Photocatalysis, Sensors, Electronics, Optical data storage
  • Battery and super-capacitor technology
  • Hydrophobicity and hydrophilicity

Read more in the Research section.

Contact details

Dr Demosthenes Koutsogeorgis
School of Science and Technology
Nottingham Trent University
Clifton Lane
Nottingham NG11 8NS.
Telephone: +44 (0)115 848 8334