Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C)

Materials Science and Technology (ER-C-2)

Raman Imaging and Spectroscopy

Our Research

Characterization by non-destructive Raman imaging and spectroscopy provides new insights into applied physics, chemistry and biology. The obtained spectra contain chemical and structural information with respect to i.e. chemical bonding, composition, phase, strain, defects and temperature of a material.

In addition, micro-Raman spectroscopy and imaging is a sensitive method to detect carbon related compounds and (other) impurities and their distribution down to the sub-micrometer scale. Its use can help in the understanding, observation, development and improvement of novel materials, devices and technologies, contributing to their higher efficiency and to sustainability.

Research Topics:

Tracking of reactions [1][2]

Laser micro-annealing [3][4][5]

Thermal damage threshold [6][7]

Phase transitions [2][8]

Thermography [4][9]

Points of contact

Selected Publications

[1] FZJ-2025-01938

J. Reimers, M. Mikulics, M. Lipinska-Chwalek, B. Zeller-Plumhoff, L. Kibkalo, M. Kruth, R. Willumeit-Römer, J. Mayer, H.H. Hardtdegen, Towards Correlative Raman Spectroscopy–STEM Investigations Performed on a Magnesium–Silver Alloy FIB Lamella, Nanomaterials. 15 (2025) 430. https://doi.org/10.3390/nano15060430

[2] FZJ-2020-04180

M. Mikulics, Z. Sofer, A. Winden, S. Trellenkamp, B. Förster, J. Mayer, H.H. Hardtdegen, Nano-LED induced chemical reactions for structuring processes, Nanoscale Adv. 2 (2020) 5421–5427. https://doi.org/10.1039/D0NA00851F.

[3] FZJ-2025-01776

L. Ahrens, M. Mikulics, S. Schröder, J. Mayer, H.H. Hardtdegen, Laser-Micro-Annealing of Microcrystalline Ni-Rich NCM Oxide: Towards Micro-Cathodes Integrated on Polyethylene Terephthalate Flexible Substrates, Materials (Basel). 18 (2025) 680. https://doi.org/10.3390/ma18030680.

[4] FZJ-2021-00880

M. Mikulics, P. Kordoš, D. Gregušová, Z. Sofer, A. Winden, S. Trellenkamp, J. Moers, J. Mayer, H. Hardtdegen, Conditioning nano-LEDs in arrays by laser-micro-annealing: The key to their performance improvement, Appl. Phys. Lett. 118 (2021) 043101. https://doi.org/10.1063/5.0038070.

[5] FZJ-2020-02184

M. Mikulics, J.G. Lu, L. Huang, P.L. Tse, J.Z. Zhang, J. Mayer, H. Hardtdegen, Laser micro annealing conditioning for the suppression of statistical scatter in freestanding Sb2Te3 nanowire resistance, FlatChem. 21 (2020) 100164. https://doi.org/10.1016/j.flatc.2020.100164.

[6] FZJ-2023-03120

M. Mikulics, R. Adam, G. Chen, D. Chakraborty, J. Cheng, A. Pericolo, I. Komissarov, D.E. Bürgler, S.F. Heidtfeld, J. Serafini, S. Preble, R. Sobolewski, C.M. Schneider, J. Mayer, H.H. Hardtdegen, Determination of Thermal Damage Threshold in THz Photomixers Using Raman Spectroscopy, Crystals. 13 (2023) 1267. https://doi.org/10.3390/cryst13081267.

[7] FZJ-2022-05598

M. Mikulics, R. Adam, Roman Sobolewski, S. Heidtfeld, D. Cao, D.E. Bürgler, C.M. Schneider, J. Mayer, H.H. Hardtdegen, Nano-LED driven phase change evolution of layered chalcogenides for Raman spectroscopy investigations, FlatChem. 36 (2022) 100447. https://doi.org/10.1016/j.flatc.2022.100447.

[8] FZJ-2020-02184

M. Mikulics, H.H. Hardtdegen, Fully photon operated transmistor / all-optical switch based on a layered Ge1Sb2Te4 phase change medium, FlatChem. 23 (2020) 100186. https://doi.org/10.1016/j.flatc.2020.100186

[9] FZJ-2017-02120

M. Mikulics, P. Kordoš, A. Fox, M. Kočan, H. Lüth, Z. Sofer, H. Hardtdegen, Efficient heat dissipation in AlGaN/GaN heterostructure grown on silver substrate, Appl. Mater. Today. 7 (2017) 134–137. https://doi.org/10.1016/j.apmt.2017.02.008.

Last Modified: 12.12.2025

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