Photonics and Optoelectronics Group

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Functional Nanoparticles & Nanostructures

We use colloidal chemistry approaches for the preparation and surface modification of functional nanoparticles, hybrid nanostructures/nanocomposites and assemblies with appealing optical properties for a wide range of applications, spanning from optics to photocatalysis, photovoltaics or biology.

Our main interest is devoted to the utilization of colloidal nanoparticles of several materials (with a special interest on those holding localized surface plasmons and fluorescent properties) as building-blocks for the creation of complex, self-assembled, nanostructures with new or enhanced properties.


  • Dr. Jessica Rodríguez-Fernández (group leader)
  • Dr. M. A. Habeeb Muhammed (postdoctoral researcher)
  • Dr. Adam J. Blanch (postdoctoral researcher)
  • Dr. María Ana Huergo (visiting researcher, Univ. Nacional de la Plata, Argentina)
  • Verena Baumann (PhD candidate)
  • Marlene Lamers (master student)
  • Katja Lyons (lab technician)
  • Tanja Lüdtke (HiWi)

Research Interests


Functional Nanoparticles  
  • Metal nanoparticles (e.g. Au, Ag)
  • Semiconductor nanoparticles (e.g. Cu2-xS)

Hybrid Nanocomposites & Nanostructures

Hybrid Nanocomposites & Nanostructures  
  • Organic/inorganic (e.g. Au NRs@pNIPAM)
  • Inorganic/inorganic (e.g. CdS/Pt heterostructures)

Self-Assembly &
Functional Assemblies

Self-Assembly & Functional Assemblies
  • Self-assembly of functional colloidal nanoparticles
  • DNA-directed self-assembly & DNA origami

Optical Properties at the Nanoscale

Optical Properties at the Nanoscale
  • Plasmonic
  • Excitonic
  • Tuning optical properties


All-Optical Manipulation
  • Optical trapping
  • Optical printing
  • Optothermal tuning / effects


  • Dr. Carlos Cárdenas-Daw (postdoctoral researcher)
  • Nitin Saxena (master student)
  • Katalin Szendrei (student)
  • Dr. Ilka Kriegel (PhD student)
  • Dr. Aliaksei Dubavik (postdoctoral researcher)
  • Dr. Haojin Ba (PhD student)
  • Frederik Haase (student)
  • Anup Scherchan (student)
  • Anna Helfrich (Lab technician)


  • Wenhua Li (Catalonia Institute for Energy Research – IREC, Barcelona, „Nanocrystals for Photovoltaics“) – March 2011-July 2011
  • Dr. Sameer Sapra (Indian Institute of Technology, Delhi, „Semiconductor Nanocrystals“ ) – May 2011-July 2011
  • Prof. Andrey Rogach (City University of Hong Kong)
  • Aleksandar Vaneski (City University of Hong Kong) – May 2011

Recent Publications and Publications Highlights*

Vacancy-Doped Plasmonic Copper Chalcogenide Nanocrystals with Tunable Optical Properties

I. Kriegel, J. Rodríguez-Fernández, C. Jiang, R. Schaller, E. da Como, D. V. Talapin, J. Feldmann
in "Ultrafast Dynamics in Molecules, Nanostructures and Interfaces: Selected Lectures Presented at Symposium on Ultrafast Dynamics of the 7th Internationa" Series in Optics and Photonics - Vol.8 (ed. by G. G. Gurzadyan, G. Lanzani, C. Soci) Chapt. 15, World Scientific Pub Co (2014)

Cation exchange synthesis and optoelectronic properties of type II CdTe-Cu2-xTe nano-heterostructures

I. Kriegel, A. Wisnet, A.R. Srimath Kandada, F. Scotognella, F. Tassone, C. Scheu, H. Zhang, A.O. Govorov, J. Rodríguez-Fernández, J. Feldmann
J. Mater. Chem. C, 2, 3189 (2014)
(Invited contribution the 2014 Emerging Investigators Themed Issue & Featured at the inside front cover)

Photonic-Crystal Nanocavities Containing Plasmonic-Nanoparticles Assembled Using a Laser-Printing Technique

J. Do, K.N. Sediq, K. Deasy, D.M. Coles, J. Rodríguez-Fernández, J. Feldmann, D.G. Lidzey
Adv. Optical Mater. 1, 946 (2013)
(Featured at the cover of the December issue)

Shedding Light on Vacancy-Doped Copper Chalcogenides: Shape-Controlled Synthesis, Optical Properties, and Modeling of Copper Telluride Nanocrystals with Near-Infrared Plasmon Resonances

I. Kriegel, J. Rodríguez-Fernández, A. Wisnet, H. Zhang, C. Waurisch, A. Eychmüller, A. Dubavik, A. Govorov, J. Feldmann
ACS Nano, 7 (5), 4367-4377 (2013)

Design and Optical Trapping of a Biocompatible Propeller-like Nanoscale Hybrid

J. Do, R. Schreiber, A.A. Lutich, T. Liedl, J. Rodríguez-Fernández, J. Feldmann Nano Letters
Nano Lett. 12 (9), 5008 (2012)

Tuning the Excitonic and Plasmonic Properties of Copper Chalcogenide Nanocrystals

J. Am. Chem. Soc. 134 (3), 1583 (2012

Triggering the volume phase transition of core-shell Au nanorod-microgel nanocomposites with light

J. Rodríguez-Fernández, M. Fedoruk, C. Hrelescu, A. A. Lutich, J. Feldmann
Nanotechnology 22 (24), 245708 (2011)

Hybrid colloidal heterostructures of anisotropic semiconductor nanocrystals decorated with noble metals: synthesis and function

Vaneski, A. S. Susha, J. Rodríguez-Fernández, M. Berr, F. Jäckel, J. Feldmann, A. L. Rogach
Adv. Funct. Mater. 21 (9), 245708 (2011) (Invited Feature Article)

Tuning the light absorption of Cu1.97S nanocrystals in supercrystal structures

Kriegel, J. Rodríguez-Fernández, E. Da Como, A. Lutich, J. Szeifert, J. Feldmann
Chem. Mater. 23 (7), 1830 (2011)

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, 093108 (2010)

Immobilization of Gold Nanoparticles on Living Cell Membranes upon Controlled Lipid Binding

H. Ba, J. Rodríguez-Fernández, F.D. Stefani, J. Feldmann
Nano Letters 10 (8), 3006 (2010)
(Featured at the web portal of Nano Letters and Publication Award 2010 of the Center for Nanoscience (CeNS), Munich)


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