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Nanoscopy

Prof. Dr. Volker Deckert

Nanoscopy
Biopolymers

Dr. Tanja Deckert-Gaudig

Biopolymers

The focus of this departments research lies in the investigation of nanoscale phenomena. Therefore, applications in the following areas are of special interest

  • Photocatalysis of single molecules1,
  • Structural composition of nanoscale structures (proteins, nanoparticles)2.

The basic oriented research focuses on 

  • experimental frontiers of the spatial resolution3, 4, 5,
  • theoretical basics of plasmon-based near-field optical methods6, 7, 8.

Therefore, novel technologies are investigated, in particular 

  • coupling of near-field optics with time resolution,
  • substrate based enhancement of near-field signals9, 10.

Both work groups, Biopolymers and Nanoscopy, work closely together in order to ensure the basic and application oriented research.

Schematic TERS measurements on protein fibrils
Nearfield interaction between silver atom and adenine molecule
Contacted atomically flat gold cristals

 

[1] Zhang et al., Plasmon induced polymerization using a TERS approach: a platform for nanostructured 2D/1D material production. Faraday Disc. 498, 82 (2017).
[2] Helbing et al. Protein Handshake on the Nanoscale: How Albumin and Hemoglobin Self-Assemble into Nanohybrid Fibers. ACS Nano acsnano.7b07196 (2018). doi:10.1021/acsnano.7b07196
[3] Deckert-Gaudig et al., Tip-enhanced Raman spectroscopy - from early developments to recent advances. Chem. Soc. Rev. 46, 4077–4110 (2017).
[4] Deckert-Gaudig et al., Tracking of nanoscale structural variations on a single amyloid fibril with tip-enhanced Raman scattering. J. Biophoton. 5, 215–219 (2012).
[5] Singh et al. Differences in single and aggregated nanoparticle plasmon spectroscopy. Phys Chem Chem Phys 17, 2991–2995 (2015).
[6] Latorre, F. et al. Spatial resolution of tip-enhanced Raman spectroscopy - DFT assessment of the chemical effect. Nanoscale 8, 10229–10239 (2016).
[7] Trautmann, S. et al. A classical description of subnanometer resolution by atomic features in metallic structures. Nanoscale 9, 391–401 (2017).
[8] Richard-Lacroix et al.,Mastering high resolution tip-enhanced Raman spectroscopy: towards a shift of perception. Chem. Soc. Rev. 46, 3922–3944 (2017).
[9] Deckert-Gaudig et al., Ultraflat transparent gold nanoplates--ideal substrates for tip-enhanced Raman scattering experiments. Small 5, 432–436 (2009).
[10] Deckert-Gaudig et al., Transparent silver microcrystals: synthesis and application for nanoscale analysis. Langmuir 25, 6032–6034 (2009).

 

 

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