PD Dr. Tobias Vossmeyer

Foto: UHH-Behrens

Projektleiter

AG Bigall

Anschrift

Universität Hamburg

Fachbereich Chemie

Institut für Physikalische Chemie

AG Bigall

Grindelallee 117

20146 Hamburg

Büro

Raum: 349a

Kontakt

Tel.: +49 40 2395-27069

E-Mail: tobias.vossmeyer"AT"uni-hamburg.de

Schwerpunkte

Sensors and Actuators Based on Self-Assembled Nanomaterials
Nanoparticles for Bioapplications
Nano- and Microparticles for Photonics and Mechanically Strengthened Composites

Curriculum Vitae

Diploma (Chemistry):
Philipps-Universität Marburg, Germany, 1992

Ph.D. (Dr. rer. nat):
Thesis on self-assembled superlattices consisting of semiconductor nanocrystals,
Hahn-Meitner-Institut (Berlin) and Technische Universität Berlin, Germany, 1995

Postdoc:
Research project on lithographically directed self-assembly of nanoparticles,
University of California at Los Angeles (UCLA), US, 1997-98

Manager and Group Leader:
Development of novel sensor devices based on self-assembled nanomaterials,
Materials Science Laboratory, Stuttgart Technology Center, Sony Deutschland GmbH, Germany,
1999-2006

Since 2007:
Senior Scientist, Project Leader and Lecturer at the Institute of Physical Chemistry (IPhCh),
Department of Chemistry, Universität Hamburg, Germany

Publications

https://www.chemie.uni-hamburg.de/institute/pc/publikationen/db/vossmeyer.html

Current Research Activities

Our current research activities focus on the three major areas A, B and C:

A) Sensors and Actuators Based on Self-Assembled Nanomaterials

In this area we explore novel types of chemiresistors and strain gauges based on self-assembled films of gold nanoparticles (AuNP). Currently we are starting activities to evaluate the potential of freestanding nanoparticle-based membranes as actuators and components in microelectromechanical systems (MEMS).
The figure below illustrates some of these activities. For more information click here.

Selected Publications:

[1] Cross-Linked Gold Nanoparticles on Polyethylene: Resistive Responses to Tensile Strain
and Vapors,
N. Olichwer, E. W. Leib, A. H. Halfar, A. Petrov, T. Vossmeyer,
ACS Appl. Mater. Interfaces 4, 6151 (2012), DOI: 10.1021/am301780b

[2] Elastic and Viscoelastic Properties of Cross-Linked Gold Nanoparticles Probed by AFM
Bulge Tests,
H. Schlicke, E. W. Leib, A. Petrov, J. H. Schröder, T. Vossmeyer,
J. Phys. Chem C 118, 4386 (2014), DOI: 10.1021/jp4091969

[3] Freestanding Membranes of Cross-Linked Gold Nanoparticles: Novel Functional Materials for Electrostatic Actuators,
H. Schlicke, D. Battista, S. Kunze, C. J. Schröter, M. Eich, T. Vossmeyer,
ACS Appl. Mater. Interfaces 7, 15123, (2015), DOI: 10.1021/acsami.5b02691

[4] Resistive pressure sensors based on freestanding membranes of gold nanoparticles,
H. Schlicke, M. Rebber, S. Kunze, T. Vossmeyer,
Nanoscale 8, 183 (2016), DOI: 10.1039/c5nr06937h

[5] Electrostatically driven drumhead resonators based on freestanding membranes of cross-
linked gold nanoparticles,
H. Schlicke, C. J. Schröter, T. Vossmeyer,
Nanoscale 8, 15880 (2016), DOI: 10.1039/C6NR02654K

B) Nanoparticles for Bioapplications

Here, we study the synthesis and biofunctionalization of gold nanoparticles (AuNP) and semiconductor nanocrystals, and explore their application as probes for various imaging techniques. Further, in close collaboration with the University Medical Center Hamburg-Eppendorf we use biofunctionalized AuNP as model systems to develop new approaches for the treatment of acute and chronic injuries of the mammalian nervous system. The figure below illustrates some of these activities. For more information click here.

Selected Publications:

[1] Fluorescence Properties of Hydrophilic Semiconductor Nanoparticles with Tridentate Polyethylene Oxide Ligands,
M. Thiry, K. Boldt, M. S. Nikolic, F. Schulz, M. Ijeh, A. Panicker, T. Vossmeyer, H. Weller,
ACS Nano 5, 4965 (2011), DOI:10.1021/nn201065y

[2] Effect of the Spacer Structure on the Stability of Gold Nanoparticles Functionalized with Monodentate Thiolated Poly(ethylene glycol) Ligands,
F. Schulz, T. Vossmeyer, N. G. Bastús, H. Weller,
Langmuir 29, 9897 (2013), DOI: 10.1021/la401956c

[3] Gold Nanoparticles Functionalized with a Fragment of the Neural Cell Adhesion Molecule
L1 Stimulate L1-Mediated Functions, F. Schulz, D. Lutz, N. Rusche, N. G. Bastús,
M. Stieben, M. Höltig, F. Grüner, H. Weller, M. Schachner, T. Vossmeyer, G. Loers,
Nanoscale 5, 10605 (2013), DOI: 10.1039/C3NR02707D

[4] CdSe/CdS-Quantum Rods: Fluorescent Probes for in vivo Two-Photon Laser Scanning Microscopy,
J. Dimitrijevic, L. Krapf, C. Wolter, C. Schmidtke, J.-P. Merkl, T. Jochum,
A. Kornowski, A. Schüth, A. Gebert, G. Hüttmann, T. Vossmeyer, H. Weller,
Nanoscale 6, 10413 (2014), DOI: 10.1039/c4nr02702g

[5] Little Adjustments Significantly Improve the Turkevich Synthesis of Gold Nanoparticles,
F. Schulz, T. Homolka, N. G. Bastús, V. F. Puntes, H. Weller, T. Vossmeyer,
Langmuir 30, 10779 (2014), DOI: 10.1021/la503209b

C) Nano- and Microparticles for Photonics and Mechanically Strengthened Composites

As a member of the Collaborative Research Center “SFB 986 – Tailor-Made Multi-Scale Materials Systems – M3” we recently started activities aiming at the synthesis of nano- and microparticles enabling the assembly of novel direct photonic materials. Special focus is placed on the preparation of high refractive index materials and metallo-dielectric core-shell-shell structures resisting operating temperatures well-above 1000 °C. As theoretically predicted by our partners of the Hamburg University of Technology (TUHH) such photonic materials can afford extremely efficient thermal barrier coatings (TBCs) or absorbers/emitters boosting the efficiency of thermophotovoltaic (TPV) cells.

The figure below illustrates some of these activities. For more information click here.

In another project of the SFB 986 we are aiming at the development of hierarchically ordered composites consisting of inorganic nanoparticles crosslinked by specially designed organic compounds. In such materials the inorganic particles provide hardness and stability, whereas the organic compounds function as built-in shock-absorbers to increase the material's resistance to fracturing. For example, these materials are interesting for the development of lightweight, scratch-resistant coatings for displays of mobile phones and tablet-PCs. Here, our task focuses on the synthesis of inorganic nanoparticles of various compositions, sizes and shapes. These particles are the fundamental building blocks of the intended hierarchically ordered materials.

Selected Publications:

[1] Synthesis and Thermal Stability of Zirconia and Yttria-Stabilized Zirconia Microspheres,
E. W. Leib, U. Vainio, R. M. Pasquarelli, J. Kus, C. Czaschke, N. Walter, R. Janßen, M. Müller,
A. Schreyer, H. Weller, T. Vossmeyer,
J. Colloid Interface Sci. 448, 582 (2015), DOI: 10.1016/j.jcis.2015.02.049

[2] Yttria-stabilized zirconia microspheres: novel building blocks for high-temperature photonics,
E. W. Leib, R. M. Pasquarelli, J. J. do Rosario, P. N. Dyachenko, S. Döring, A. Puchert, A. Yu. Petrov,
M. Eich, G. Schneider, R. Janssen, H. Weller, T. Vossmeyer,
J. Mater. Chem. C 4, 62 (2016), DOI: 10.1039/c5tc03260a

[3] High-Temperature Stable Zirconia Particles Doped with Yttrium, Lanthanum, and Gadolinium,
E. W. Leib, R. M. Pasquarelli, M. Blankenburg, M. Müller, A. Schreyer, R. Janssen, H. Weller, T. Vossmeyer,
Part. Part. Syst. Charact. 33, 645 (2016), DOI: 10.1002/ppsc.201600069

Conference Proceedings

9) Refractory absorber/emitter using monolayer of ceramic microparticles,
P. N. Dyachenko, J. J. do Rosario, E. W. Leib, A. Y. Petrov, M. Störmer, H. Weller, T. Vossmeyer, G. A. Schneider, M. Eich,
Proc. SPIE 9885, Photonic Crystal Materials and Devices XII, 98851K (2016)

8) Highly Stable and Orientationally Coupled Gold Nanoparticle Antibody Conjugates for Sensitivity Improvement of LFIA,
M. Ijeh, T. Vossmeyer, H. Weller,
Nanotech Conference & Expo 2011: An Interdisciplinary Integrative Forum on Nanotechnology, Biotechnology and Microtechnology, Boston, MA, United States, June 13-16, 2011, 3, 197-200 (2011)

7) Tailor-Made Fluorecent Nanocrystals for 2-Photon In Vivo Imaging,
L. Krapf, J. Dimitrijevic, A. Schüth, J. Niehaus, S. Becker, C. Schmidtke, T. Vossmeyer,
G. Hüttmann, A. Gebert, H. Weller,
European Cells and Materials 20, Suppl. 3, 146 (2010)

6) Uptake of 200 nm Latex Particles and 20 nm Quantum Dots by the Small Intestinal Mucosa – An Intravital Two-Photon Microscopy Study in Mice,
A. Schueth, L. Krapf, J. Dimitrijevic, A. Klinger, R. Orzekowsky-Schroeder, T. Vossmeyer,
G. Hüttmann, H. Weller, A. Gebert,
European Cells and Materials, 20. Suppl. 3, 229, (2010)

5) Gold-Nanoparticle/Dithiol Films as Chemical Sensors and First Steps Towards Their Integration on Chip,
T. Vossmeyer, Y. Joseph, I. Besnard, O. Harnack, N. Krasteva, B. Guse, H.-G. Nothofer,
A. Yasuda,
Proc. SPIE 5513, 202 (2004)

4) Gold-Nanoparticle/Organic Linker Films: Self-Assembly, Electronic and Structural Characterisation, Composition and Vapour Sensitivity,
Y. Joseph, N. Krasteva, I. Besnard, B. Guse, M. Rosenberger, U. Wild, A. Knop-Gericke, R. Schlögl, A. Yasuda, T. Vossmeyer,
Faraday Discuss. 125, 77 (2004)

3) V2O5 Nanofiber-Based Chemiresistors for Ammonia Detection,
U. Schlecht, I. Besnard, A. Yasuda, T. Vossmeyer, M. Burgard,
Molecular Nanostructures: XVII Int’l. Winterschool/Euroconference on Electronic Properties of Novel Materials, American Institute of Physics, Melville, NY, 491, (2003)

2) Parallel Processing of Nanocrystal Colloids: Light Directed Assembly and Simple Devices,
J. R. Heath, T. Vossmeyer, E. DeIonno, G. Markovich,
Nanostructured Materials - Clusters, Composites, and Thin Films,
ACS Symposium Series 679, 1 (1997)

1) Nanocrystals of II-VI Semiconductor Materials,
H. Weller, T. Vossmeyer, A. Mews, L. Katsikas, G. Reck,
MRS Proceedings 358, 213 (1995)

Publications

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