Nanoplasmonics/-photonics

The Nanoplasmonics/-photonics group studies the optical and plasmonic properties of metal nanoparticles as well as hybrid nanosystems containing metal nanoparticles, organic molecules and/or semiconducting nanocrystals. Our fundamental investigations are performed both on the ensemble and the single-object level. Hybrid materials are of particular interest since they allow for enhancing and modifying the properties of the single components or can even induce behavior that neither of the components exhibits on its own. These properties include Raman scattering, fluorescence, photoluminescence, kinetic properties, photocatalytic activities and many more.

Raman Spectroscopy of organic-metal hybrid systems

Plasmonic properties of novel metal nanoparticles

We are interested in studying novel materials and their combination in hybrid systems and aim at a fundamental understanding of their properties and interactions. Understanding interactions between different materials at the nanoscale is of paramount importance for future applications in fields such as (bio)sensing, interconnects between optical and conventional semiconductor circuits and alternative energy.

Among the experimental techniques employed, we most frequently use Dark-field Rayleigh-Scattering, Raman and fluorescence microscopy and spectroscopy as well as Scanning Force Microscopy.

Metal-decorated semiconductor nanocrystals for photocatalytic hydrogen production

Spectroscopy of single semiconductor nanowires/quantum dot solids

Team

• Dr. Frank Jäckel
  (group leader, since June 2008)
• Dr. Nicolas Bouchonville
  (hybrid materials for photocatalysis)
• Dr. Wei Li
  (nanocrystal synthesis)
• Dr. Sol Carretero Palacios
  (theoretical analysis of nanoplasmonic systems)
• Dipl.-Phys. Maximilian Berr
  (metal decorated semiconductor nanocrystals)
• Lidiya Osinkina, M.Sc.
  (hybrid metal-organic nanostructures)
• Dipl.-Phys. Spas Nedev
  (optical trapping of plasmonic particles)

Publications since 2009*

Hole scavenger redox potentials determine quantum efficiency and stability of Pt-decorated CdS nanorods for photocatalytic hydrogen generation

M.J. Berr, P. Wagner, S. Fischbach, A. Vaneski, J. Schneider, A.S. Susha, A.L. Rogach, F. Jäckel, J. Feldmann
Appl. Phys. Lett. (2012), accepted for publication.

Delayed Photoelectron Transfer in Pt-Decorated CdS Nanorods under Hydrogen Generation Conditions

M.J. Berr, A. Vaneski, C. Mauser, S. Fischbach, A.S. Susha, A.L. Rogach, F. Jäckel, J. Feldmann
Small 8(2), 291-297 (2012)

Pyrite nanocrystals: Shape-controlled synthesis and tunable optical properties via reversible self-assembly

W. Li, M. Döblinger, A. Vaneski, A.L. Rogach, F. Jäckel, J. Feldmann
J. Mater. Chem. 21 (44), 17946 - 17952 (2011)

Accelerating fluorescence resonance energy transfer with plasmonic nanoresonators

V. Faessler, C. Hrelescu, A.A. Lutich, L. Osinkina, S. Mayilo, F. Jäckel, J. Feldmann
Chem. Phys. Lett. 508, 67-70 (2011).

Selective excitation of individual plasmonic hotspots at the tips of single gold nanostars

C. Hrelescu, T.K. Sau, A.L. Rogach, F. Jäckel, L. Guillaume, L. Douillard, F. Charra
Nano Letters 11(2), 402-407 (2011)

Hybrid Colloidal Heterostructures of Anisotropic Semiconductor Nanocrystals Decorated with Noble Metals: Synthesis to Function

A. Vaneski, A.S. Susha, J. Rodriguez-Fernandez, M. Berr, F. Jäckel, J. Feldmann, A.L. Rogach,
Adv. Funct. Mater. 21(9), 1547-1556 (2011).

Single-mode waveguiding in bundles of self-assembled semiconductor nanowires

J. Zhang, A.A. Lutich, A. S. Susha, A.L. Rogach, F. Jäckel, J. Feldmann,
Appl. Phys. Lett. 97 (2010) 221915.
Highlighted in the Virtual Journal of Nanoscale Science and Technology (volume 22, issue 25, December 13 2010)

Optical anisotropy of semiconductor nanowires beyond the electrostatic limit

J. Zhang, A.A. Lutich, J. Rodríguez-Fernández, A.S. Susha, A.L. Rogach, F. Jäckel, J. Feldmann
Phys. Rev. B . 82 (2010) 155301.
Highlighted in the Virtual Journal of Nanoscale Science and Technology (volume 22, issue 16, October 11 2010)

Colloidal CdS nanorods decorated with sub-nanometer sized Pt clusters for photocatalytic hydrogen generation

M. Berr, A. Vaneski, A. S. Susha, J. Rodríguez-Fernández, M. Döblinger, F. Jäckel, A. L. Rogach, J Feldmann,
Appl. Phys. Lett. 97 (2010) 093108.

Thermomechanical control of electronic coupling in quantum dot solids

J. Zhang, A.A. Lutich, A.S. Susha, M. Döblinger, C. Mauser, A.O. Govorov, A.L. Rogach, F. Jäckel, J.Feldmann
J. Appl. Phys. 107 (2010) 123516.

Properties and Applications of Nonspherical Colloidal Noble Metal Nanoparticles

T.K. Sau, A.L. Rogach, F. Jäckel, T.A. Klar, J. Feldmann
Adv. Mater. 22 (2010) 1805-1825.

Single gold nanostars enhance Raman scattering

C. Hrelescu, T.K. Sau, A.L. Rogach, F. Jäckel, J. Feldmann
Appl. Phys. Lett., 94, 153113 (2009)
Highlighted in the Virtual Journal of Nanoscale Science and Technology (volume 19, issue 17, April 27 2009)

* For a full publication list of the team members please visit their respective personal homepages linked above.

Alumni

• Johannes Breimeier, B. Sc.
• Dr. Weihai Ni
• Thomas Simon, B. Sc.
• Dipl.-Phys. Stefan Fischbach
• Dr. Calin Hrelescu
• Peter Wagner, B. Sc.
• Dr. Jianhong Zhang
• Stephanie Stohl, B. Sc.
• Eduardo Perassi
• Dipl.-Phys. Siji Wu
• Dipl.-Phys. Valerie Faessler
• Severin Habisreutinger, B.Sc.
• Prof. Tapan K. Sau