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Light-driven diffusioosmosis (LDDO): Generation of fluid flow by optical stimuli of chemical species at solid-liquid interfaces and manipulation of objects sedimented at a wall.

video by Dr. Joachim Jelken

Selected publications:

  1. Feldmann, D.; Maduar S.R.; Santer, M.; Lomadze, N.; Vinogradova O.I.; Santer, S. «Manipulation of small particles at solid liquid interface: light driven diffusioosmosis» Scientific Reports, 6 (2016) 36443.
  2. Santer, S. «Remote control of soft nano-objects by light using azobenzene containing surfactants» Journal of Physics D: Applied Physics, 51 (2017) 013002.
  3. Arya, P.; Umlandt, M.; Jelken, J.; Feldmann, D.; Lomadze, N.; Asmolov , E. S.; Vinogradova, O. I.; Santer, S. A. «Light-Induced Manipulation of Passive and Active Microparticles» The European Physical Journal E, 44(50) (2021), 1-10.
  4. Bekir, M.; Sharma, A.; Umlandt, M.; Lomadze, N.; Santer, S. «How to make a surface act as a micropump» Advanced Materials Interfaces, (2022), 2102395.

Active colloids: light triggered interaction potential and self-propulsion

video by Dr. Pooja Arya

Selected publications:

  1. Feldmann, D.; Arya, P.; Lomadze, N.; Kopyshev, A.; Santer, S. «Light-driven motion of self-propelled porous Janus particles» Applied Physics Letters 115 (2019), 263701.
  2. Feldmann, D.; Arya, P.; Molotilin, TY.; Lomadze, N.; Kopyshev, A.; Vinogradova, OI.; Santer, S. «Extremely Long-Range Light-Driven Repulsion of Porous Microparticles» Langmuir, 36 (2020) 6994-7004.
  3. Arya, P.; Feldmann, D.; Kopyshev, A.; Lomadze, N. and Santer, S. «Light driven guided and self-organized motion of mesoporous colloidal particles» Soft Matter, 16 (2020), 1148.

Photo-responsive surfactants: photo-isomerization and adsoprtion

video by Maren Umlaudt

Selected publications:

  1. Arya, P.; Jelken, J.; Lomadze, N.; Santer, S.; Bekir, M. «Kinetics of photo-isomerization of azobenzene containing surfactants» Journal of Chemical Physics, 152 (2) (2020).
  2. Umlandt, M.; Feldmann, D.; Schneck, E.; Santer, S. A.; Bekir, M. «Adsorption of Photoresponsive Surfactants at Solid–Liquid Interfaces» Langmuir, (2020), 36, 46, 14009–14018
  3. Bekir, M.; Sharma, A.; Umlandt, M.; Lomadze, N.; Santer, S. «How to make a surface act as a micropump» Advanced Materials Interfaces, (2022), 2102395.

Surface relief grating (SRG) formation: understanding and applications

Scheme by Dr. Alexey Kopyshev

Selected publications:

  1. Yadavalli, N. S.; Linde, F.; Kopyshev, A.; Santer, S. «Soft matter beats hard matter: Rupturing of thin metallic films induced by mass transport in photosensitive polymer films» ACS Applied Materials & Interfaces, 5 (2013) 7743–7747.
  2. Yadavalli, N. S.; Loebner, S.; Papke, Th.; Sava, E.; Hurduc, N.; Santer, S. «A comparative study of photoinduced deformation in azobenzene containing polymer films»  Soft Matter, 12 (2016) 2593-2603.
  3. Loebner, S.; Lomadze, N.; Kopyshev, A.; Koch, M.; Guskova, O.; Grenzer Saphiannikova, M.; Santer, S. A. «Light Induced Deformation of Azobenzene Containing Colloidal Spheres: Calculation and Measurement of Opto-Mechanical Stresses» The Journal of Physical Chemistry B, 122 (2018) 2001-2009.
  4. Jelken, J. and Santer, S. «Light induced reversible structuring of photosensitive polymer films» RSC Advances, 9 (2019) 20295-20305.
  5. Jelken, J.; Henkel, C.; Santer, S.«Polarization controlled fine structure of diffraction spots from an optically induced grating»Applied Physics Letters, 116 (2020), 051601.

Photo-responsive polymer brushes: Light triggered scission of polymer chains and reversible switching of the brush topography

Scheme by Dr. Alexey Kopyshev

Selected publications:

  1. Bekir M.; Loebner S.; Kopyshev A.; Lomadze N.; Santer S. «Photosensitive Spherical Polymer Brushes: Light-Triggered Process of Particle Repulsion» Processes, 11(3) (2023), 773.
  2. Kopyshev, A.; Kanevche, K.; Lomadze, N.; Pfitzner, E.; Loebner, S.; Patil, R.R.; Genzer, J.; Heberle, J. and Santer, S. «Light Induced Structuring of Photosensitive Polymer Brushes» ACS Applied Polymer Materials, 1 (2019), 3017−3026.
  3. Kopyshev, A.; Galvin, C.J.; Patil, R.R.; Genzer, J.; Lomadze, N.; Feldmann, D.; Zakrevski, J.; Santer, S.  «Light-induced reversible change of roughness and thickness of photosensitive polymer brushes» ACS Applied Materials & Interfaces, 8 (2016) 19175–19184.

Surface plasmons: near field intensity distribution as a tool for structuring of polymer films and isomerization of surfactants

Scheme by Thomas Papke

Selected publications:

  1. Papke, Th.; Yadavalli, N.S.; Henkel, C.; Santer, S.  «Mapping a plasmonic hologram with photosensitive polymer films: standing versus propagating waves»  ACS Applied Materials & Interfaces, 6 (2014) 14174–14180.
  2. Lysyakova, L.; Lomadze, N.; Neher, D.; Maximova, K.; Kabashin, A.V.; Santer, S. «Light‑tunable plasmonic nanoarchitectures using gold  nanoparticle‑azobenzene‑containing cationic surfactant complexes» The Journal of Physical Chemistry C, 119 (2015) 3762-3770.
  3. König, T.; Tsukruk V. V.; Santer, S.  «Controlled Topography Change of Subdiffraction Structures Based on Photosensitive Polymer Films Induced by Surface Plasmon Polaritons»  ACS Applied Materials & Interfaces, 5 (2013) 6009–6016.

Prof. Dr. Svetlana Santer

Professur

Promotionsausschuss (Vorsitz - Insititut für Physik und Astronomie)

 

Campus Golm
House 28, Room 2.025

 

consulting hours
Tuesdays 11 a.m. - 12 p.m.
Friday 4 p.m. - 6 p.m.
Please contact Mrs. Derlig to arrange an appointment