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. Carlos Cárdenas-Daw (postdoctoral researcher)
  • Dr. Adam J. Blanch (postdoctoral researcher)
  • Jaekwon Do (PhD candidate)
  • Verena Baumann (PhD candidate)
  • Marlene Lamers (master student)
  • Katja Lyons (Lab technician)

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


  • 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)


  • Dr. María Ana Huergo (visiting researcher - DAAD fellow, Univ. Nacional de la Plata, Argentina) - September 2013-February 2014
  • 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*

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, in press, DOI:10.1039/C3TC32049A (2014)
(Invited contribution to the 2014 Emerging Investigators Themed Issue)

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., in press (2013), DOI: 10.1002/adom.201300214

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

I. Kriegel, C. Jiang, J. Rodríguez-Fernández, R. D. Schaller, D. V. Talapin, E. da Como, J. Feldmann
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.