Liquid crystals and soft matter

Publications

Publication list and cover pictures of our group

Publications

Shear alignment and 2D charge transport of tilted smectic liquid crystalline phases – XRD and FET studies
I. Wurzbach, C. Rothe, K. Bruchlos, S. Ludwigs, F. Giesselmann
Journal of Materials Chemistry C 7, 2615‑2624 (2019) DOI:10.1039/C8TC04536D
 
Molecular Electron Density Distribution and X-Ray Diffraction Patterns of Smectic A Liquid Crystals – A Simulation Study
C. Haege, S. Jagiella, F. Giesselmann
ChemPhysChem 20, 2466-2472 (2019) DOI: 10.1002/cphc.201900538
 
On the orientational distribution functions in de Vries-type smectic liquid crystals
P. Rudquist, M.A. Osipov, F. Giesselmann
Liquid Crystals 45, 2097-2108 (2018) DOI:10.1080/02678292.2018.1489985
 
The Influence of Carbosilane Nanosegregation on the Dynamics in "de Vries-type' Liquid Crystals
C. Müller, C.P.J. Schubert, R.P. Lemieux, F. Giesselmann
ChemPhysChem 19, 2703-2708 (2018) DOI:10.1002/cphc.201800537
 
Large Electro-Optic Kerr Effect in Ionic Liquid Crystals: Connecting Features of Liquid Crystals and Polyelectrolytes
M.C. Schlick, N. Kapernaum, M.M. Neidhardt, T. Wöhrle, Y. Stöckl, S. Laschat, F. Giesselmann
ChemPhysChem 19, 2305-2312 (2018) DOI:10.1002/cphc.201800347
 
Actuating thermo- and photo-responsive tubes from liquid crystalline elastomers
L.B. Braun, T. Hessberger, E. Pütz, C. Müller, F. Giesselmann, C.A. Serra, R. Zentel
Journal of Materials Chemistry C 6, 9093-9101 (2018) DOI:10.1039/c8tc02873g
 
Electroclinic effect in the chiral lamellar alpha phase of a lyotropic liquid crystal
M.D. Harjung, F. Giesselmann
Physical Review E 97, 032705 (2018) DOI:10.1103/PHYSREVE.97.032705
 
Controlled preparation of amphiphilic triblock-copolyether in a metal- and solvent-free approach for tailored structure-directing agents
A. Balint, M. Papendick, M. Clauss, C. Müller, F. Giesselmann, S. Naumann
Chemical Communications 54, 2220-2223 (2018) DOI:10.1039/C7CC09031E
 
Hunting for smectic C in calamitic azobenzene ionic liquid crystals with different cationic head groups
N. Kapernaum, E. Wuckert, W. Frey, S. Marino, M. Wahl, F. Giesselmann, S. Lascshat
Journal of Physical Organic Chemistry 31, e3779 (2018) DOI:10.1002/POC.3779
 
Ultra-broadband EPR spectroscopy in field and frequency domains
P. Neugebauer, D. Bloos, R. Marx, P. Lutz, M. Kern, D. Aguila, J. Vaverka, O. Laguta, C. Dietrich, R. Clerac, J. van Slageren
Physical Chemistry Chemical Physics 20, 15528-15534 (2018) DOI:10.1039/C7CP07443C
 
The design of smectic liquid crystals with an axially chiral biphenyl core: in search of a proper ferroelectric liquid crystal phase
Z. Ahmed, C. Müller, M. Holzwarth, C. Haege, F. Giesselmann, R.P. Lemieux
Journal of Materials Chemistry C 6, 1562-1566 (2018) DOI:10.1039/C7TC05426B
 
Mesomorphic properties of cyanobiphenyl dimers with a central malonate unit
M.A. Grunwald, J.C. Haenle, K.C. Kress, R. Forschner, T. Wöhrle, W. Frey, F. Giesselmann, S. Laschat
Liquid Crystals 45, 1626-1636 (2018) DOI:10.1080/02678292.2018.1468500
 
Amino acid/crown ether hybrid materials: how charge affects liquid crystalline self-assembly
K. Bader, M.M. Neidhardt, T. Wöhrle, R. Forschner, A. Baro, F. Giesselmann, S. Laschat
Soft Matter 13, 8379-8391 (2017)DOI:10.1039/c7sm01484h
 
New amphiphilic materials showing the lyotropic analogue to the thermotropic smectic C* liquid crystal phase
M.D. Harjung, C.P.J. Schubert, F. Knecht, J.H. Porada, R.P. Lemieux, F. Giesselmann
Journal of Materials Chemistry C 5, 7452-7457 (2017) DOI:10.1039/C7TC02030A
 
Ordering of ferromagnetic nanoparticles in nematic liquid crystals
I. Dierking, M. Heberle, M.A. Osipov, F. Giesselmann
Soft Matter 13, 4636-4643 (2017) DOI:10.1039/C7SM01029J
 
Chiral structures from achiral micellar lyotropic liquid crystals under capillary confinement
C.F. Dietrich, P. Rudquist, K. Lorenz, F. Giesselmann
Langmuir 33, 5852-5862 (2017) DOI:10.1021/acs.langmuir.7b01074
 
Design of liquid crystals with ‘de Vries-like’ properties: structural variants of carbosilane-terminated 5-phenylpyrimidine mesogens
C.P.J. Schubert, C. Müller, A. Bogner, F. Giesselmann, R.P. Lemieux
Soft Matter 13, 3307-3313 (2017) DOI:10.1039/C7SM00355B
 
Tuning liquid crystalline phase behaviour in columnar crown ethers by sulfur substituents
J. Kirres, K. Schmitt, I. Wurzbach, F. Giesselmann, S. Ludwigs, M. Ringenberg, A. Ruff, A. Baro, S. Laschat
Organic Chemistry Frontiers 4, 790-803 (2017) DOI:10.1039/C7QO00077D
 
First Examples of de Vries-like Smectic A to Smectic C Phase Transitions in Ionic Liquid Crystals
N. Kapernaum, C. Müller, S. Moors, M.C. Schlick, E. Wuckert, S. Laschat, F. Giesselmann
ChemPhysChem 17, 4116-4123 (2016) DOI:10.1002/cphc.201600829
 
δ-Methyl Branching in the Side Chain Makes the Difference: Access to Room-Temperature Discotics
J. Kirres, F. Knecht, P. Seubert, A. Baro, S. Laschat
ChemPhysChem 17, 1159-1165 (2016) DOI:10.1002/cphc.201501166
 
Tyrosine-Based Ionic Liquid Crystals: Switching from a Smectic A to a Columnar Mesophase by Exchange of the Spherical Counterion
M.M. Neidhardt, M. Wolfrum, S. Beardsworth, T. Woehrle, W. Frey, A. Baro, C. Stubenrauch, F. Giesselmann, S. Laschat
Chemistry a European Journal 22, 16494-16504 (2016) DOI:10.1002/chem.201602937
 
Orientational distribution functions and order parameters in "de Vries"-type smectics: A simulation study
F. Jenz, M.A. Osipov, S. Jagiella, F. Giesselmann
Journal of Chemical Physics 145, 134901 (2016) DOI:10.1063/1.4963660
 
Co-flow microfluidic synthesis of liquid crystalline actuating Janus particles
T. Hessberger, L.B. Braun, F. Henrich, C. Müller, F. Giesselmann, C. Serra, R. Zentel
Journal of Materials Chemistry C 4, 8778-8786 (2016) DOI:10.1039/c6tc03378d
 
Manipulating the twist sense of helical nanofilaments of bent-core liquid crystals using rod-shaped, chiral mesogenic dopants
M.R. Tuchband, D. Chen, B. Horanyi, M. Shuai, Y.Q. Shen, E. Korblova, D.M. Walba, N. Kapernaum, F. Giesselmann, M.A. Glaser, J.E. Maclennan, N.A. Clark
Liquid Crystals 43, 1083-1091 (2016) DOI:10.1080/02678292.2016.1159345
 
Columnar propeller-like 1,3,5-triphenylbenzenes: the missing link of shape-persistent hekates
T. Woehrle, S.J. Beardsworth, C. Schilling, A. Baro, F. Giesselmann, S. Laschat
Soft Matter 12, 3730-3736 (2016) DOI: 10.1039/c5sm02489g
 
Reliability of Orientational Order Parameters Determined from Two-dimensional X-ray Diffraction Patterns: A Simulation Study
F. Jenz, S. Jagiella, M.A. Glaser, F. Giesselmann
ChemPhysChem 17, 1568-1572 (2016) DOI:10.1002/cphc.201600050
 
Chiral 5-phenylpyrimidine liquid crystals with ‘de Vries-like’ properties: dependence of electroclinic effect and ferroelectric properties on carbosilane nanosegregation
C.P.J. Schubert, C. Müller, F. Giesselmann, R.P. Lemieux
Journal of Materials Chemistry C 4, 8483-8489 (2016) DOI:10.1039/C6TC03120J
 
Chirality Detection Using Nematic Liquid Crystal Droplets on Anisotropic Surfaces
P. Rudquist, C.F. Dietrich, A.G. Mark, F. Giesselmann
Langmuir 32, 6140-6147 (2016) DOI:10.1021/acs.langmuir.6b00382
 
Structured light enables biomimetic swimming and versatile locomotion of photoresponsive soft microrobots
S. Palagi, A.G. Mark, S.Y. Reigh, K. Melde, T. Qiu, H. Zeng, C. Parmeggiani, D. Martella, A. Sanchez-Castillo, N. Kapernaum, F. Giesselmann, D.S. Wiersma, E. Lauga, P. Fischer
Nature Materials 15, 647-653 (2016) DOI:10.1038/nmat4569
 
Gelled complex fluids: Combining unique structures with mechanical stability
C. Stubenrauch, F. Giesselmann
Angewandte Chemie International Edition
55, 3268-3275 (2016) DOI: 10.1002/anie.201506603
and Angewandte Chemie 128, 3324-3332 (2016) DOI: 10.1002/ange.201506603
 
Discotic liquid crystals
T. Wöhrle, I. Wurzbach, J. Kirres, A. Kostidou, N. Kapernaum, J. Litterscheidt, J. C. Haenle, P. Staffeld, A. Baro, F. Giesselmann, S. Laschat
Chemical Reviews 116, 1139-1241 (2016) DOI:10.1021/acs.chemrev.5b00190
 
Amphotropic azobenzene derivatives with oligooxyethylene and glycerol based polar groups
X. P. Tan, R. L. Zhang, C. X. Guo, X. H. Cheng, H. F. Gao, F. Liu, J. R. Bruckner, F. Giesselmann, M. Prehm, C. Tschierske
Journal of Materials Chemistry C 3, 11202-11211 (2015) DOI:10.1039/c5tc02583d
 
Electroclinic effect in a chiral carbosilane-terminated 5-phenylpyrimidine liquid crystal with 'de Vries-like' properties
C. P. J. Schubert, C. Mueller, M. D. Wand, F. Giesselmann, R. P. Lemieux
Chemical Communications 51, 12601-12604 (2015) DOI:10.1039/c5cc05212b
 
Tuning the mesomorphic properties of phenoxy-terminated smectic liquid crystals: the effect of fluoro substitution
M. Thompson, C. Carkner, N. J. Mosey, N. Kapernaum, R. P. Lemieux
Soft Matter 11, 3860-3868 (2015) DOI: 10.1039/C5SM00473J
 
Photoresponsive ionic liquid crystals based on azobenzene guanidinium salts
E. Wuckert, M. D. Harjung, N. Kapernaum, C. Mueller, W. G. Frey, A. Baro, F. Giesselmann, S. Laschat
Physical Chemistry Chemical Physics 17, 8382-8392 (2015) DOI: 10.1039/C4CP04783D
 
Circular polarization interferometry: circularly polarized modes of cholesteric liquid crystals
A. Sanchez-Castillo, S. Eslami, F. Giesselmann, P. Fischer
Optics Express 22 , 31227-31236 (2014) DOI: 10.1364/OE.22.031227
 
Interpretation of different molecular packing in the micelles of lyotropic nematic and cholesteric phases via mass density measurements
E. Akpinar, F. Giesselmann, M. Acimis
Journal of Molecular Liquids 200, 354-360 (2014) DOI: 10.1016/j.molliq.2014.11.009
 
Design of liquid crystals with 'de Vries' properties: the effect of carbosilane nanosegregation in 5-phenyl-1,3,4-thiadiazole mesogens
K. Mulligan, A. Bogner, Q. Song, C. Schubert, F. Giesselmann, R. P. Lemieux
Journal of Materials Chemistry C 2 , 8270-8276 (2014) DOI: 10.1039/C4TC01364F
 
Tuning the mesogenic properties of 5-alkoxy-2-(4-alkoxyphenyl)pyrimidine liquid crystals: the effect of a phenoxy end-group in two isometric series
M. Thompson, C. Carkner, A. Bailey, N. J. Mosey, N. Kapernaum, R. P. Lemieux
Liquid Crystals 41 (9), 1246-1260 (2014) DOI: 10.1080/02678292.2014.913721
 
Headgroups versus symmetry in congruent ion pairs: which one does the job in mesomorphic aryl guanidinium and aryl imidazolium sulphonates?
M. Butschies, M. Mansueto, J. Haenle, C. Schneck, S. Tussetschlaeger, F. Giesselmann, S. Laschat
Liquid Crystals 41 (6), 821-838 (2014) DOI: 10.1080/02678292.2014.885600
   
Sign inversion of the spontaneous polarization in a 'de Vries'-type ferroelectric liquid crystal
D. Nonnenmacher, R. Lemieux, M. Osipov, F. Giesselmann
ChemPhysChem 15, 1368-1375 (2014) DOI: 10.1002/cphc.201301154
   
Chiral isotropic sponge phase of hexatic smectic layers of achiral molecules
D. Chen, Y. Shen, J. Aguero, E. Korblova, D. Walba, N. Kapernaum F. Giesselmann, J. Watanabe, J. Maclennan, M. Glaser, N. Clark
ChemPhysChem 15, 1502-1507 (2014) DOI: 10.1002/cphc.201300912
   
Design of liquid crystals with 'de Vries' properties: carbosilane-terminated 5-phenylpyrimidine mesogens suitable for chevron-free FLC Formulations
C. Schubert, A. Bogner, J. Porada, K. Ayub, T. Andrea, F. Giesselmann, R. Lemieux
Journal of Materials Chemistry C 2, 4581-4589 (2014) DOI: 10.1039/C4TC00393D
   
Dispersion of multi-wall carbon nanotubes in ferroelectric liquid crystals
M. Yakemseva, I. Dierking, N. Kapernaum, N. Usoltseva, F. Giesselmann
The European Physical Journal E 37, 7 (2014) DOI: 10.1140/epje/i2014-14007-4
   
Contributions of intermicellar distance, micelle volume and screw angle to the temperature dependence of helical pitch in the intrinsic lyotropic cholesteric phases
E. Akpinar, F. Giesselmann, M. Acimis
Journal of Molecular Liquids 191, 20-28 (2014) DOI: 10.1016/j.molliq.2013.11.024
   
Orientational fluctuations near the smectic A to smectic C phase transition in two “de Vries”-type liquid crystals
D. Nonnenmacher, S. Jagiella,Q. X. Song, R. P. Lemieux, F. Giesselmann
ChemPhysChem 14, 2990-2995 (2013) DOI: 10.1002/cphc.201300358
   
Microactuators from a main-chain liquid crystalline elastomer via thiol-ene "click" chemistry
E. K. Fleischmann, F. R. Forst, K. Köder, N. Kapernaum, R. Zentel
Journal of Materials Chemistry C 1, 5885 (2013) DOI: 10.1039/C3TC30272E
 
A lyotropic chiral smectic C liquid crystal with polar electrooptic switching
J. R. Bruckner, J. H. Porada, C. F. Dietrich, I. Dierking, F. Giesselmann
Angewandte Chemie International Edition 52, 8934-8937 (2013) DOI:10.1002/anie.201303344
and Angewandte Chemie 125, 9102-9105 (2013) DOI: 10.1002/ange.201303344
   
Tuning 'de Vries-like' properties in binary mixtures of liquid crystals with different molecular lengths
Q. X. Song, A. Bogner, F. Giesselmann, R. P. Lemieux
Chemical Communications 49, 8202-8204 (2013) DOI:10.1039/C3CC45207G
   
Effect of micelle size and intermicellar distance on the chirality transfer in the intrinsic lyotropic cholesteric phases
E. Akpinar, F. Giesselmann, M. Acimis
Liquid Crystals 40 (9), 1183-1194 (2013) DOI: 10.1080/02678292.2013.807941
 
Elucidating the smectic A-promoting effect of halogen end-groups in calamitic liquid crystals
I. Rupar, K. M. Mulligan, J. C. Roberts, D. Nonnenmacher, F. Giesselmann, R. P. Lemieux
Journal of Materials Chemistry C 1, 3729-3735 (2013) DOI: 10.1039/C3TC30534A
 
Design of conductive crown ether based columnar liquid crystals: impact of molecular flexibility and geometry
P. Staffeld, M. Kaller, S. J. Beardsworth, K. Tremel, S. Ludwigs, S. Laschat, F. Giesselmann
Journal of Materials Chemistry C 1, 892-901 (2013) DOI: 10.1039/C2TC00284A
 
Thermotropic and lyotropic behaviour of new liquid-crystalline materials with different hydrophilic groups: synthesis and mesomorphic properties
A. Bubnov, M. Kaspar, V. Hamplova, U. Dawin, F. Giesselmann
Beilstein Journal of Organic Chemistry  9, 425-436 (2013) DOI:10.3762/bjoc.9.45
 
Tuning 'de Vries-like' properties in siloxane- and carbosilane-terminated smectic liquid crystals
Q. X. Song, D. Nonnenmacher, F. Giesselmann, R. P. Lemieux
Journal of Materials Chemistry C 1, 343-350 (2013) DOI: 10.1039/C2TC00338D
 
One-piece micropumps from liquid crystalline core-shell particles
E. K. Fleischmann, H. L. Liang, N. Kapernaum, F. Giesselmann, J. Lagerwall, R. Zentel
Nature Communications 3, 1178 (2012) DOI: 10.1038/ncomms2193
 
The 2D-correlated structures of a lyotropic liquid crystalline diol with a phenylpyrimidine core
J. R. Bruckner, D. Krueerke, J. H. Porada, S. Jagiella, D. Blunk, F. Giesselmann
Journal of Materials Chemistry 22, 18198-18203 (2012) DOI: 10.1039/c2jm32868b
 
Formation of smectic phases in binary liquid crystal mixtures with a huge length ratio
N. Kapernaum, F. Knecht, C. S. Hartley, J. Roberts, R. P. Lemieux, F. Giesselmann
Beilstein Journal of Organic Chemistry  8, 1118-1125 (2012) DOI: 10.3762/bjoc.8.124
 
Orientational order parameters of a de Vries-type ferroelectric liquid crystal obtained by polarized Raman spectroscopy and x-ray diffraction
A. Sanchez-Castillo, M. A. Osipov, S. Jagiella, Z. H. Nguyen, M. Kaspar, V. Hamplova, J. Maclennan, F. Giesselmann
Physical Review E 85, 061703 (2012) DOI: 10.1103/PhysRevE.85.061703
 
Increased mesophase range in liquid crystalline crown ethers via lower molecular symmetry
M. Kaller, S. J. Beardsworth, P. Staffeld, S. Tussetschlaeger, F. Giesselmann, S. Laschat
Liquid Crystals 39 (5), 607-618 (2012) DOI: 10.1080/02678292.2012.668720
 
Molecular theory of smectic ordering in liquid crystals with nanoscale segregation of different molecular fragments
M. V. Gorkunov, M. A. Osipov, N. Kapernaum, D. Nonnenmacher, F. Giesselmann
Physical Review E 84, 051704 (2011) DOI: 10.1103/PhysRevE.84.051704
 
Synthesis of novel phasmidic, gemini-type bisimidazolium salts
J. Porada, M. Mansueto, S. Laschat, C. Stubenrauch, F. Giesselmann
Synthesis-Stuttgart 18, 3032 (2011)
 
Substituted crown ethers as central units in discotic liquid crystals: effects of crown size and cation uptake
M. Kaller, P. Staffeld, R. Haug, W. Frey, F. Giesselmann, S. Laschat
Liquid Crystals 38 (5), 531-553 (2011) DOI: 10.1080/02678292.2011.558215
 
The effect of lactate unit number in compounds with azo group in the molecular core
V. Novotna, V. Hamplova, M. Kaspar, N. Podoliak, A. Bubnov, M. Glogarova, D. Nonnenmacher, F. Giesselmann
Liquid Crystals 38 (5), 649-655 (2011) DOI: 10.1080/02678292.2011.565426
 
Antiferroelectric phase in liquid crystalline compounds containing an azo group in their molecular core
M. Kaspar, V. Novotna, V. Hamplova, N. Podoliak, D. Nonnenmacher, F. Giesselmann, M. Glogarova
Liquid Crystals 38 (3), 309-315 (2011) DOI: 10.1080/02678292.2010.546532
 
Tuning the frustration between SmA- and SmC-promoting elements in liquid crystals with 'de Vries-like' properties
Q. Song, D. Nonnenmacher, F. Giesselmann, R. P. Lemieux
Chemical Communications 47, 4781-4783 (2011) DOI: 10.1039/C1CC10344J
 
Microfluidic Synthesis of Highly Shape-Anisotropic Particles from Liquid Crystalline Elastomers with Defined Director Field Configurations
C. Ohm, N. Kapernaum, D. Nonnenmacher, F. Giesselmann, C. Serra, R. Zentel
Journal of the American Chemical Society 133, 5305-5311 (2011) DOI: 10.1021/ja1095254
 
Conference Report: 38th German Topical Meeting on Liquid Crystals
D. Nonnenmacher, F. Schoerg, N. Kapernaum, D. Krueerke
Liquid Crystals Today 20, 22-24 (2011) DOI: 10.1080/1358314X.2011.549200
 
Study of de Vries behaviour of the smectic A* - smectic C* phase transition
N. Podoliak, V. Novotna, M. Glogarova, V. Hamplova, M. Kaspar, A. Bubnov, N. Kapernaum, F. Giesselmann
Phase Transitions 83, 1026-1036 (2010) DOI: 10.1080/01411594.2010.509615
 
Towards Efficient Dispersion of Carbon Nanotubes in Thermotropic Liquid Crystals
S. Schymura, M. Kühnast, V. Lutz, S. Jagiella, U. Dettlaff-Weglikowska, S. Roth, F. Giesselmann, C. Tschierske, G. Scalia, J. Lagerwall
Advanced Functional Materials 19, 3350 (2010) DOI: 10.1002/adfm.201000539
 
Unconventional ferroelectric behavior in nanosegregating liquid crystals with de Vries-like behavior
D. Nonnenmacher, M. A. Osipov, J. C. Roberts, R. P. Lemieux, F. Giesselmann
Physical Review E 82, 031703 (2010) DOI: 10.1103/PhysRevE.82.031703
 
Electrolyte Effects on the Chiral Induction and on Its Temperature Dependence in a Chiral Nematic Lyotropic Liquid Crystal
U. C. Dawin, M. A. Osipov, F. Giesselmann
Journal of Physical Chemistry B 114, 10327-10336 (2010) DOI: 10.1021/jp102547p
 
Systematic Variation of Length Ratio and the Formation of Smectic A and Smectic C Phases
N. Kapernaum, C. S. Hartley, J. C. Roberts, F. Schoerg, D. Krueerke, R. P. Lemieux, F. Giesselmann
ChemPhysChem 11, 2099-2107 (2010) DOI: 10.1002/cphc.201000243
 
Complex Chirality at the Nanoscale
J. P. F. Lagerwall, F. Giesselmann
ChemPhysChem 11, 975-977 (2010) DOI: 10.1002/cphc.200000055
 
Correlation between the molecular chirality index and the spontaneous polarisation in series of smectic C* liquid crystals
S. Becke, S. Haller, M. A. Osipov, F. Giesselmann
Molecular Physics 108, 573-582 (2010) DOI: 10.1080/00268971003623385
 
Chiral Induction in Lyotropic Liquid Crystals: Insights into the Role of Dopant Location and Dopant Dynamics
U. C. Dawin, H. Dilger, E. Roduner, R. Scheuermann, A. Stoykov, F. Giesselmann
Angewandte Chemie International Edition
49, 2427-2430 (2010) DOI: 10.1002/anie.200904107
and Angewandte Chemie 122, 2477-2480 (2010)
 
Orientational order parameters in liquid crystals: A comparative study of x-ray diffraction and polarized Raman spectroscopy results
A. Sanchez-Castillo, M. A. Osipov, F. Giesselmann
Physical Review E 81, 021707 (2010) DOI: 10.1103/PhysRevE.81.021707
 
Design of Liquid Crystals with "de Vries-like" Properties: Frustration between SmA- and SmC-Promoting Elements
J. C. Roberts, N. Kapernaum, Q. Song, D. Nonnenmacher, K. Ayub, F. Giesselmann, R. P. Lemieux
Journal of the American Chemical Society 132, 364-370 (2010)
 
Molecular length distribution and the formation of smectic phases
N. Kapernaum, C. S. Hartley, J. C. Roberts, R. P. Lemieux, F. Giesselmann
Beilstein Journal of Organic Chemistry  5, 65 (2009) DOI: 10.3762/bjoc.5.65
 
Saddle-shaped tetraphenylenes with peripheral gallic esters displaying columnar mesophases
E. Wuckert, C. Hägele, F. Giesselmann, A. Baro, S. Laschat
Beilstein Journal of Organic Chemistry  5, 57 (2009) DOI: 10.3762/bjoc.5.57
 
Influence of spacer chain lengths and polar terminal groups on the mesomorphic properties of tethered 5-phenylpyrimidines
G. F. Starkulla, E. Kapatsina, A. Baro, F. Giesselmann, S. Tussetschläger, M. Kaller, S. Laschat
Beilstein Journal of Organic Chemistry  5, 63 (2009)
 
The Orientational Order in So-Called de Vries Materials
S. T. Lagerwall, P. Rudquist, F. Giesselmann
Molecular Crystals and Liquid Crystals  510, 1282 - 1291 (2009)
 
Columnar Mesophases Controlled by Counterions in Potassium Complexes of Dibenzo[18]crown-6 Derivatives
M. Kaller, S. Tussetschläger, P. Fischer, C. Deck, A. Baro, F. Giesselmann, S. Laschat
Chemistry a European Journal 15, 9530-9542 (2009)
 
Electrolyte Effects on the Stability of Nematic and Lamellar Lyotropic Liquid Crystal Phases: Colligative and Ion-Specific Aspects
U. Dawin, J. Lagerwall, F. Giesselmann
Journal of Physical Chemistry B 113, 11414-11420 (2009)
 
First photoresponsive liquid-crystalline materials with small layer shrinkage at the transition to the ferroelectric phase
V. Novotna, V. Hamplova, A. Bubnov, M. Kaspar, M. Glogarova, N. Kapernaum, S. Bezner, F. Giesselmann
Journal of Materials Chemistry 19, 3992-3997 (2009)
 
Anomalous Odd-Even Effects in Columnar and Smectic Phases of Discotic Tetraphenylenes
C. Hägele, E. Wuckert, S. Laschat, F. Giesselmann
ChemPhysChem 10, 1291-1298 (2009)
 
p-Alkoxybiphenyls with guanidinium head groups displaying smectic mesophases
S. Sauer, S. Saliba, S. Tussetschläger, A. Baro, W. Frey, F. Giesselmann, S. Laschat, W. Kantlehner
Liquid Crystals 36 (3), 275-299 (2009)
 
On the balance between syn- and anticlinicity in smectic phases formed by achiral hockey-stick mesogens with and without chiral dopants
E. Enz, S. Findeisen-Tandel, R. Dabrowski, F. Giesselmann, W. Weissflog, U. Baumeister, J. Lagerwall
Journal of Materials Chemistry 19, 2950-2957 (2009)
 
On the Origin of the 'Giant' Electroclinic Effect in a 'De Vries'-Type Ferroelectric Liquid Crystal Material for Chirality Sensing Applications
N. Kapernaum, D. M. Walba, E. Korblova, C. Zhu, C. Jones, Y. Shen, N. A. Clark, F. Giesselmann
ChemPhysChem
10, 890-892 (2009) DOI: 10.1002/cphc.200900065
 
Chiral tetraphenylethenes as novel dopants for calamitic and discotic liquid crystals
A. Schreivogel, U. Dawin, A. Baro, F. Giesselmann, S. Laschat
Journal of Physical Organic Chemistry 22, 484-494 (2009)
 
Simple experimental assessment of smectic translational order parameters
N. Kapernaum, F. Giesselmann
Physical Review E 78, 062701 (2008) DOI: 10.1103/PhysRevE.78.062701
 
Effect of lateral methoxy substitution on mesomorphic and structural properties of ferroelectric liquid crystals
A. Bubnov, M. Kaspar, V. Novotna, V. Hamplova, M. Glogarova, N. Kapernaum, F. Giesselmann
Liquid Crystals 35 (11), 1329-1337 (2008)
 
Design of Liquid Crystals with "de Vries-Like" Properties: Organosiloxane Mesogen with a 5-Phenylpyrimidine Core
J. C. Roberts, N. Kapernaum, F. Giesselmann, R. P. Lemieux
Journal of the American Chemical Society 130, 13842-13843 (2008)
 
Fast switching organosiloxane ferroelectric liquid crystals
J. C. Roberts, N. Kapernaum, F. Giesselmann, M. D. Wand, R. P. Lemieux
Journal of Materials Chemistry 18, 5301-5306 (2008)
 
Guanidinium chlorides with triphenylene moieties displaying columnar mesophases
S. Sauer, N. Steinke, A. Baro, S. Laschat, F. Giesselmann, W. Kantlehner
Chemistry of Materials 20, 1909-1915 (2008)
 
Spontaneous macroscopic carbon nanotube alignment via colloidal suspension in hexagonal columnar lyotropic liquid crystals
G. Scalia, C. von Bühler, C. Hägele, S. Roth, F. Giesselmann, J.P.F. Lagerwall
Soft Matter 4, 570-576 (2008)
 
Carbon nanotubes in liquid crystals as versatile functional materials
G. Scalia, J. P. F. Lagerwall, S. Schymura, M. Haluska, F. Giesselmann, S. Roth
Physica Status Solidi B 244 (11), 4212-4217 (2007)
 
Antiferroelectric liquid crystals with induced intermediate polar phases and the effects of doping with carbon nanotubes
J. P. F. Lagerwall, R. Dabrowski, G. Scalia
Journal of Non-Crystalline Solids 353, 4411-4417 (2007)
 
Order-disorder molecular model of the smectic-A-smectic-C phase transition in materials with conventional and anomalously weak layer contraction
M. V. Gorkunov, M. A. Osipov, J. P. F. Lagerwall and F. Giesselmann
Physical Review E
76, 051706 (2007) DOI: 10.1103/PhysRevE.76.051706

Molecular model for de Vries type smectic-A-smectic-C phase transition in liquid crystals
M. V. Gorkunov, F. Giesselmann, J. P. F. Lagerwall, T. J. Sluckin, and M. A. Osipov
Physical Review E
75, 060701 (R) (2007)

Smectic E Mesophases in a Series of 2-(4-n-Alkylphenyl)indenes
S. Schultz, G. Kehr, R. Fröhlich, G. Erker, N. Kapernaum, C. Hägele, F. Giesselmann, S. Laschat, R. Judele, and A. Baro
Liquid Crystals
34 (8), 919-926 (2007)

Discotic Liquid Crystals: From Tailor-Made Synthesis to Plastic Electronics
S. Laschat, A. Baro, N. Steinke, F. Giesselmann, C. Hägele, G. Scalia, R. Judele, E. Kapatsina, S. Sauer, A. Schreivogel, and M. Tosoni
Angewandte Chemie International Edition
46, 4832-4887 (2007)
and Angewandte Chemie 119, 4916-4973 (2007)

Experimental evidence of the electric-field induced critical behaviour of the smectic C*-alpha phase
J. Hoffmann, F. Giesselmann, and W. Kuczynski
Phase Transitions
80, 841-849 (2007)

Laser-light diffraction studies on the electric-field response of the helical director configuration in smectic-C* liquid crystals
M. Krueger, and F. Giesselmann
Journal of Applied Physics
101, 094102 (2007) DOI: 10.1063/1.2717609

Photoresponsive ferroelectric liquid-crystalline polymers
P. Beyer, M. Krueger, F. Giesselmann, and R. Zentel
Advanced Functional Materials
17, 109 (2007)
 
Nature of smectic A*-C* phase transitions in a series of ferroelectric liquid crystals
S. Bezner, M. Krueger, V. Hamplova, M. Glogarova, and F. Giesselmann
Journal of Chemical Physics
126, 054902 (2007)
 
Nanotube alignment using lyotropic liquid crystals
J. Lagerwall, G. Scalia, M. Haluska, U. Dettlaff-Weglikowska, F. Giesselmann, and S. Roth
Advanced Materials
19, 359-364 (2007) DOI: 10.1002/adma.200600889
 
The intrinsic photoferroelectric effect in the smectic C* phase of a chiral azobenzene
A. Saipa, M. A. Osipov, K. W. Lanham, C. H. Chang, D. M. Walba, and F. Giesselmann,
Journal of Materials Chemistry,
16, 4170-4177 (2006)
 
Effect of phenyl rings in liquid crystal molecules on SWCNTs studied by Raman spectroscopy
G. Scalia, J. P. F. Lagerwall, M. Haluska, U. Dettlaff-Weglikowska, F. Giesselmann, and S. Roth
Physica Status Solidi B
243, 3238-3241 (2006)
 
Simultaneous alignment and dispersion of carbon nanotubes with lyotropic liquid crystals
J. P. F. Lagerwall, G. Scalia, M. Haluska, U. Dettlaff-Weglikowska, F. Giesselmann, and S. Roth
Physica Status Solidi B
243, 3046-3049 (2006)
 
Electroclinic effect in chiral SmA* liquid crystals induced by atropisomeric biphenyl dopants: amplification of the electroclinic coefficient using achiral additives
C. S. Hartley, N. Kapernaum, J. C. Roberts, F. Giesselmann and R. P. Lemieux
Journal of Materials Chemistry
16, 2329-2337 (2006)
 
Columnar and Smectic Liquid Crystals Based On Crown Ethers
N. Steinke, W. Frey, A. Baro, S. Laschat, C. Drees, M. Nimtz, C. Hägele and F. Giesselmann
Chemistry European Journal
12, 1026-1035 (2006)
 
Current topics in smectic liquid crystals (Invited Review)
J. P. F. Lagerwall and F. Giesselmann
ChemPhysChem
7, 20-45 (2006) DOI: 10.1002/cphc.200500472
 
On the change in helix handedness at transitions between the SmC* and SmCa* phases in chiral smectic liquid crystals
J. P. F. Lagerwall, M. A. Osipov, and F. Giesselmann
Liquid Crystals 33, 625-633 (2006)
 
The peculiar optic, dielectric and x-ray diffraction properties of a fluorinated de Vries asymmetric-diffuse-cone-model ferroelectric liquid crystal
J. P. F. Lagerwall, F. Giesselmann, E. Korblova, D. M. Walba, J. M. Oton, D. Coleman, R. Shao, and N. A.Clark
Liquid Crystals 33, 17-23 (2006)
 
Columnar liquid crystals derived from ester-substituted tetraphenylenes
E. Wuckert, S. Laschat, A. Baro, C. Hägele, F. Giesselmann, and H. Luftmann
Liquid Crystals 33, 103-107 (2006)
 
Electrolyte effects on the nematic-isotropic phase transition in lyotropic liquid crystals
P. K. Mukherjee, J. P. F. Lagerwall, and F. Giesselmann
Liquid Crystals 32, 1301-1306 (2005)
 
Frustration between syn- and anticlinicity in mixtures of chiral and non-chiral tilted smectic-Ctype liquid crystals
J. P. F. Lagerwall, G. Heppke, and F. Giesselmann
European Physical Journal E 18, 113 - 121 (2005)
 
Chiral smectic C subphases induced by mixing a bistereogenic antiferroelectric liquid crystal with a non-chiral liquid crystal
J. P. F. Lagerwall, F. Giesselmann, S. Rauch, G. Heppke, P. Rudquist, and S. T. Lagerwall
Ferroelectrics 315, 221 - 230 (2005)
 
Orientational order in smectic liquid-crystalline phases of amphiphilic diols
F. Giesselmann, R. Germer and A. Saipa
Journal of Chemical Physics 123, 034906 (2005) DOI: 10.1063/1.1943972

and Virtual Journal of Biological Physics Research 10, 034906 (2005)
 

Demonstration of the antiferroelectric aspect of the helical  superstructures in Sm-C*, Sm-C*α, and Sm-C*a liquid crystals
J. P. F. Lagerwall
Physical Review E 71, 051703 (2005)
 
Generation of frustrated liquid crystal phases by mixing an achiral nematic-smectic-C mesogen with an antiferroelectric chiral smectic liquid crystal
J. P. F. Lagerwall, F. Giesselmann, C. Selbmann, S. Rauch, G. Heppke
Journal of Chemical Physics 122, 144906 (2005)
 
Dielectric spectroscopy of 'de Vries' type smectic A* - C* transitions
M. Krueger and F. Giesselmann
Physical Review E 71, 041704 (2005) DOI: 10.1103/PhysRevE.71.041704
 
Differences between smectic homo- and copolysiloxanes as a consequence of microphase separation
M. Rössle, D. Schollmeyer, R. Zentel, J.P.F. Lagerwall, F. Giesselmann and R. Stannarius
Liquid Crystals 32, 533 (2005)
 
Landau model of the direct isotropic to smectic CA* phase transition in antiferroelectric liquid crystals
P. K. Mukherjee and F. Giesselmann
Journal of Chemical Physics 121(23), 12038 (2004)
 
Tetraphenylenes as novel saddle-shaped building blocks of columnar and smectic liquid crystals
E. Wuckert, M. Dix, S. Laschat, A. Baro, J. L. Schulte, C. Hägele and F. Giesselmann
Liquid Crystals 31(10), 1305-1309 (2004)
 
On the origin of high optical director tilt in a partially fluorinated orthoconic antiferroelectric liquid crystal mixture
J. P. F. Lagerwall, A. Saipa, F. Giesselmann and R. Dabrowsky
Liquid Crystals 31(9), 1175-1184 (2004)
 
A chameleon chiral polar liquid crystal: rod-shaped when nematic, bent-shaped when smectic
J. P. F. Lagerwall, F. Giesselmann, M. D. Wand and D. M. Walba
Chemistry of Materials 16, 3606-3615 (2004)
 
Ferroelectric polysiloxane liquid crystals with "de Vries"-type smectic A* - smectic C* transitions
M. Rössle, R. Zentel, J. P. F. Lagerwall and F. Giesselmann
Liquid Crystals 31(6), 883-887 (2004)
 
Columnar liquid crystals with a central crown ether unit
A. Schultz, S. Laschat, A. Saipa, F. Giesselmann, M. Nimtz, J. L. Schulte, A. Baro and B. Miehlich
Advanced Functional Materials 14(2), 163-168 (2004)
 
Flüssigkristalle: Funktionsmaterialien aus "weicher Materie"
S. Laschat and F. Giesselmann
Stuttgarter unikurier 91(1), 56-57 (2003)
 
On the phase sequence of antiferroelectric liquid crystals and its relation to orientational and translational order
J. P. F. Lagerwall*, P. Rudquist, S. T. Lagerwall, and F. Giesselmann
Liquid Crystals 30(4), 399 - 414 (2003) DOI: 10.1080/0267829031000069683
 
Antiferroelectric liquid-crystal mixture without smectic layer shrinkage at the direct Sm-A* - Sm-C* transition
F. Giesselmann*, J. P. F. Lagerwall, G. Andersson, and M. D. Radcliffe
Physical Review E 66, 051704 (2002)
 
Optical and x-ray evidence of the "de Vries" Sm-A* - SmC* transition in a non-layer-shrinkage ferroelectric liquid crystal with very weak interlayer tilt correlation
J. P. F. Lagerwall, F. Giesselmann*, and M. D. Radcliffe
Physical Review E 66, 031703 (2002) DOI: 10.1103/PhysRevE.66.031703
 
Thermodynamics of the photoferroelectric effect in smectic-C* liquid crystals
A. Langhoff and F. Giesselmann*
Journal of Chemical Physics 117(5), 2232 - 2237 (2002)
 
Kinetics of the photoferroelectric effect in chiral smectic-C liquid crystals studied by time-resolved measurements of spontaneous electric polarization and director tilt angle
A. Langhoff and F. Giesselmann*
ChemPhysChem 3, 424 -432 (2002)
 
A high resolution temperature scanning technique for optical studies of liquid crystal phase transitions
A. Saipa and F. Giesselmann*
Liquid Crystals 29(3), 347 - 353 (2002)
 
Photoferroelectric smectic-C* liquid crystal mixtures
A. Langhoff and F. Giesselmann*
Ferroelectrics 244, 283 - 293 (2000)
 
Anomalous electric conductivity in amphiphilic smectic liquid crystals with terminal diol-groups
R. Germer, F. Giesselmann*, P. Zugenmaier, and C. Tschierske
Molecular Crystals and Liquid Crystals 331, 643 - 650 (1999)
 
Smectic-A* - smectic-C* transition in a ferroelectric liquid crystal without smectic layer shrinkage
F. Giesselmann*, P. Zugenmaier, I. Dierking, S. T. Lagerwall, B. Stebler, M. Kaspar, V. Hamplova, and M. Glogarova
Physical Review E 60(1), 598 - 602 (1999)
 
Mesogenic behavior of optically active allenes - a new class of FLC
R. Lunkwitz, C. Tschierske*, F. Giesselmann, and H. Kruth
Ferroelectrics 212, 265 - 272 (1998)
 
Dielectric studies of the bias field effect on the soft mode of a ferroelectric liquid crystal
J. Schacht, F. Giesselmann, P. Zugenmaier, and W. Kuczynski
Ferroelectrics 209, 483-504 (1998)
 
Tilt-polarization coupling in a homologous series of ferroelectric liquid crystals
J. Schacht, H. Baethge, F. Giesselmann, and P. Zugenmaier
Journal of Materials Chemistry 8, 603-612 (1998).
 
Dispersion of the optical axes in smectic C* liquid crystals
F. Giesselmann, A. Langhoff, and P. Zugenmaier
Liquid Crystals 23, 927-931 (1997)
 
Experimental determination of Landau expansion coefficients in ferroelectric liquid crystals
F. Giesselmann, A. Heimann, and P. Zugenmaier
Ferroelectrics 200, 237-256 (1997)
 
Axial chiral allenylacetates as novel ferroelectric liquid crystals
R. Lunkwitz, C. Tschierske, A. Langhoff, F. Giesselmann, and P. Zugenmaier
Journal of Materials Chemistry 7, 1713-1721 (1997)
 
Polarization reversal current characteristics of horizontal chevron ferroelectric liquid crystal cells
I. Dierking, F. Giesselmann, and P. Zugenmaier
Ferroelectrics 198, 41-47 (1997)
 
Collective director modes at the transition to hexatic ferroelectric liquid crystalline phases
J. Schacht, F. Giesselmann, P. Zugenmaier, and W. Kuczynski
Physical Review E 55, 5633-5640 (1997)
 
Molecular-statistical description of the smectic-A - smectic-C phase transition
F. Giesselmann and P. Zugenmaier
Physical Review E 55, 5613-5622 (1997)
 
Temperature and bias-field dependences of dielectric behaviour in the antiferroelectric liquid crystal, (R)-MHPOBC
J. Hou, J. Schacht, F. Giesselmann, and P. Zugenmaier
Liquid Crystals 22, 409-417 (1997)
 
Investigations on the field-induced switching behaviour in an antiferroelectric liquid crystal
J. Hou, J. Schacht, F. Giesselmann, and P. Zugenmaier
Liquid Crystals 22, 401-407 (1997)
 
Induced polarization in the SmA* phase: A comparison of theoretical models and experimental methods
D. Hermann, L. Komitov, S.T. Lagerwall, B. Stebler, R. Shashidar, J. V. Selinger, and F. Giesselmann
Ferroelectrics 181, 371-378 (1996)
 
Additive partial chiral properties of a thermotropic liquid crystal with two chiral centers"
I. Dierking, F. Giesselmann, P. Zugenmaier
Molecular Crystals and Liquid Crystals 281, 79-90 (1996)
 
Coupling of liquid crystalline and polymer network properties in LC-elastomers
M. Brehmer, R. Zentel, F. Giesselmann, R. Germer, and P. Zugenmaier
Liquid Crystals 21, 589-596 (1996)
 
Dielectric properties of a ferroelectric liquid crystal in surface stabilized cells of various thickness
J. Schacht, F. Giesselmann, P. Zugenmaier, and W. Kuczynski
Ferroelectrics 173, 157-170 (1995)
 
Horizontal chevron configurations in ferroelectric liquid crystal cells induced by high electric fields
I. Dierking, F. Giesselmann, J. Schacht, and P. Zugenmaier
Liquid Crystals 19, 179-187 (1995)
 
Mesomorphic properties of a homologous series of chiral liquid crystals containing the a-chloroester group"
J. Schacht, I. Dierking, F. Giesselmann, K. Mohr, H. Zaschke, W. Kuczynski, and P. Zugenmaier
Liquid Crystals 19, 151-157 (1995)
 
Mean-field coefficients and electroclinic effect of a ferroelectric liquid crystal
F. Giesselmann and P. Zugenmaier
Physical Review E 52, 1762-1772 (1995) DOI: 10.1103/PhysRevE.52.1762
 
New diasterreomeric compound with cholesteric twist inversion
I. Dierking, F. Giesselmann, P. Zugenmaier, K. Mohr, H. Zaschke, and W. Kuczynski
Liquid Crystals 18, 443-449 (1995)
 
An optical method for the determination of the cholesteric pitch in liquid crystals"
I. Dierking, F. Giesselmann, and P. Zugenmaier
Zeitschrift für Naturforschung A 50a, 589-594 (1994)
 
The origin of the helical twist inversion in single component cholesteric liquid crystals
I. Dierking, F. Giesselmann, P. Zugenmaier, K. Mohr, H. Zaschke, and W. Kuczynski
Zeitschrift für Naturforschung A 49a, 1081-1086 (1994)
 
Properties of higher-ordered ferroelectric liquid crystal phases of a homologous series
I. Dierking, F. Giesselmann, J. Kusserow, and P. Zugenmaier
Liquid Crystals 17, 243-261 (1994)
 
TGBA* state in a homologous series of diarylethane a-chloroester ferroelectric liquid crystals
I. Dierking, F. Giesselmann, J. Kusserow, and P. Zugenmaier
Liquid Crystals 17, 17-22 (1994)
 
Electric field induced domain formation in surface stabilized ferroelectric liquid crystal cells
I. Dierking, F. Giesselmann, J. Schacht, and P. Zugenmaier
Materials Science Forum 157-162, 1393-1404 (1994)
 
Untersuchungen zum Mechanismus und zur Modellierung elektrooptischer Schaltvorgänge in ferroelektrischen Flüssigkristallphasen
F. Giesselmann
Mitteilungsblatt der TU Clausthal 77, 52-53 (1994)
 
Coupled director and layer reorientation in layer tilted ferroelectric smectic liquid crystal cells
F. Giesselmann and P. Zugenmaier
Molecular Crystals and Liquid Crystals 237, 121-143 (1993)
 
Ferroelectric liquid crystalline side group polymers: spacerlength variation and comparison to the monomers
K. Kühnpast, J. Springer, G. Scherowsky, F. Giesselmann, and P. Zugenmaier
Liquid Crystals 14, 861-869 (1993)
 
Computer simulation of the electrooptical switching process in ferroelectric liquid crystal cells with bookshelf geometry'
F. Giesselmann and P. Zugenmaier
Liquid Crystals 14, 389-404 (1993)
 
Investigations on the structure of a cholesteric phase with a temperature induced helix inversion and of the succeeding SC* phase in thin liquid crystal cells''
I. Dierking, F. Giesselmann, P. Zugenmaier, W. Kuczynski, S. T. Lagerwall, and B. Stebler
Liquid Crystals 13, 45-55 (1993)
 
Electrooptical investigations on the three switching states of a chiral side group polymer'
F. Giesselmann, P. Zugenmaier, G. Scherowsky, K. Kühnpast, and J. Springer
Makromolekulare Chemie Rapid Communications 13, 489 - 497 (1992)
 
Strong electroacoustic effect in ferroelectric liquid crystal cells'
F. Giesselmann, I. Dierking, and P. Zugenmaier
Molecular Crystals and Liquid Crystals Letters 8, 105-110 (1992)
 
Determination of the rotational viscosity and the elastic constant from measurement of switching time and threshold voltage on planar oriented SC* phases in thin liquid crystal cells
I. Dierking, F. Giesselmann, P. Zugenmaier, G. Pelzl, and P. Schiller
Crystal Research and Technology 27, 727 - 739 (1992)
 
Director movement and potential function of surface stabilized ferroelectric liquid crystal cells by electrooptical investigations'
F. Giesselmann and P. Zugenmaier
Liquid Crystals 8, 361-373 (1990)
 
Synthesis and characterization of liquid crystalline side group polymers with benzylideneaniline as mesogenic moiety'
F. Giesselmann and P. Zugenmaier
Liquid Crystals 5, 1567-1581 (1989)
 

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Frank Gießelmann
Prof. Dr.

Frank Gießelmann

Professor

Nadia Kapernaum
Dr.

Nadia Kapernaum

Senior Scientist

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