Research in the group Nanoscale Optical Spectroscopy at Humboldt-Universität zu Berlin combines concepts of modern developments in spectroscopy, nanotechnology, cell biology, and biochemistry to develop new plasmonic materials for different applications of SERS in complex environments. In the past years, the concept of SERS has been expanded to two-photon excitation (SEHRS) also for spectroscopy in complex systems and biological samples. Scientists in the group work in the following fields: (i) Plasmon-supported spectroscopy, (ii) SERS, SEHRS and multimodal optical microscopy, and (iii) application of plasmonic nanostructures for catalysis research. For further information, please contact Prof. Janina Kneipp.
Nanooptical concepts for Chalcopyrite (CIGSe) solar cells are a main focus of the NanoOptiX Group previously led by Prof. Martina Schmid (now University of Duisburg-Essen) at the Helmholtz-Zentrum Berlin and at the Freie Universität Berlin. To enhance CIGSe solar cells with novel light concepts, it is required to obtain an essential understanding of scattering and interaction of layers and particles. In addition to the manufacturing of metal and dielectric nanoparticle and their application in solar cells, the optical measurement techniques and analysis methods are improved with respect to spectral and spatial resolution. For this purpose, in close cooperation with the group of Prof. Paul Fumagalli at the Freie Universität Berlin, the group set up a scanning near-field optical microscope (SNOM) using four different optical modes. Furthermore, near-field simulations are developed, that are strongly needed to verify the experimental data of a SNOM measurement. All this fundamental research will be merged to improve the design and the fabrication of highly efficient thin-film solar cell devices.
The TERS Team of the Semiconductor Physics Group at Chemnitz Technical University works on tip- and surface-enhanced Raman spectroscopy, carbon nanomaterials, two-dimensional materials, scanning probe microscopy, and plasmonics. Fabrication facilities include near-field probes; SERS nanostructures (nanosphere lithography, electrochemical growth), organic molecular beam deposition, and spray coating. Main spectroscopic techniques are micro- and nano-Raman spectroscopy, electron spectroscopy (UPS, IPS, XPS), spectroscopic ellipsometry (with micrometer resolution), magneto-optic Kerr effect, scanning probe microscopy (AFM, KPFM, C-AFM), and FTIR spectroscopy. The group can supply compact metal probes for near-field spectroscopy and electrical AFM applications. For further information, please contact Dr Raul D. Rodriguez (Leader of Nanoscale Characterization) or Prof. Dietrich R.T. Zahn (Head of the Group).
The research of the Nanobiophotonics department (Wolfgang Fritzsche) at the Leibniz Institute of Photonic Technology (IPHT) Jena is focused on the utilization of the potential of plasmonic effects on hybrid metal nanostructures for applications in bioanalytics and nanophotonics. The design and the synthesis of metal nanoparticles with desired optical properties (based on localized surface plasmon resonance LSPR) and molecular components (e.g. nucleic acids such as DNA) represent the technological base and enables the realization of complex hybrid nanostructures with desired properties. An important topic is the comprehensive correlative characterization of topographic and optical properties of individual nanostructures regarding their application potential. These structures can be utilized as sensors for bioanalytics and diagnostics, as optical label, or as nanoantennas for defined molecular manipulations.
The Domke group (Max Planck Institute for Polymer Research, Dep. Molecular Spectroscopy) studies physico-chemical actions and reactions of molecules at complex electrified interfaces. For example, we want to understand the chemical origin of degradation processes that occur at sensitized solar cell interfaces. Also, we are interested in elucidating water transport in fuel cell membranes and the electrochemical growth of metal-organic frameworks. With help of advanced nearfield (TERS) and nonlinear (CARS) Raman spectroscopy approaches, we gain molecular-level understanding of the complex interfacial processes under realistic working conditions.
Please refer to our webpage for further information and contact details.
Ulrich Fischer is a retired physicist in the Interface Physics goup of Harald Fuchs at the University of Münster. His research interests are: New concepts for near field optical microscopy at high lateral resolution; Nanoplasmonic waveguide structures and superfocusing devices; Tip enhanced spectroscopy; Multifunctional chemical nanostructures; near-field photochemistry; subwavelength antennas for magnetic field enhancement (in collaboration with T. Grosjean, FEMTO-ST, Besançon). The laboratory is equipped with SNOM/STM and SNOM/AFM systems with spectroscopic accessory for TERS.
Harald Giessen (*1966) graduated from Kaiserslautern University with a diploma in Physics and obtained his M.S. and Ph.D. in Optical Sciences from the University of Arizona in 1995. After a postdoc at the Max-Planck-Institute for Solid State Research in Stuttgart he moved to Marburg as assistant professor. From 2001-2004, he was associate professor at the University of Bonn. Since 2005, he is full professor and holds the Chair for Ultrafast Nanooptics in the Department of Physics at the University of Stuttgart. He is also co-chair of the Stuttgart Center of Photonics Engineering, SCoPE. He was guest researcher at the University of Cambridge, and guest professor at the University of Innsbruck and the University of Sydney, at A*Star, Singapore, as well as at Beijing University of Technology. He is associated researcher at the Center for Disruptive Photonic Technologies at Nanyang Technical University, Singapore. He received an ERC Advanced Grant in 2012 for his work on complex nanoplasmonics. He is on the advisory board of the journals "Advanced Optical Materials", "Nanophotonics: The Journal", and "ACS Photonics". He is a topical editor for ultrafast nanooptics, plasmonics, and ultrafast lasers and pulse generation of the journal "Light: Science & Applications" of Nature Publishing Group. He is a Fellow of the Optical Society of America.
The Dai Zhang group (Parabolic mirror nanooptics group, Institute of Physical and Theoretical Chemistry, Eberhard Karls University of Tübingen) interests in three directions in the field of nanospectroscopy. 1) Design and construct confocal and scanning near-field optical microscopes for high-resolution optical imaging and spectroscopy. 2) Investigate the plasmonic effects of specially tailored metallic nanostructures. 3) Study the photochemical and photophysical properties of semiconductor organic materials and hybrids, as well as their applications in optoelectronic devices. Main expertise and the contact information of the Zhang group can be found here (PDF, 110 KB) and at the group webpage.