TY - JOUR
T1 - Directed Emission from Self-Assembled Microhelices
AU - Helmbrecht, Lukas
AU - Tan, Melissa
AU - Röhrich, Ruslan
AU - Bistervels, Marloes H.
AU - Kessels, Bruno Ortiz
AU - Koenderink, A. Femius
AU - Kahr, Bart
AU - Noorduin, Willem L.
N1 - Funding Information:
The authors would like to thank Prof. J. M. Garc?a-Ruiz for fruitful discussions. This work was part of the vernieuwingsimpuls Vidi research program ?Shaping up materials? with project number 016.Vidi.189.083, which was partly financed by the Dutch Research Council (NWO). Scanning electron microscopy was partially performed at the fabrication and characterization facilities of the Amsterdam nanoCenter, supported by NWO. This work was supported secondarily by the New York University Materials Research Science and Engineering Center (MRSEC) program (Grant No. DMR-1420073). M.T. acknowledges support from The Margaret and Herman Sokol Fellowship.
Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/6/1
Y1 - 2020/6/1
N2 - Bottom-up assembly can organize simple building blocks into complex architectures for light manipulation. The optical properties of self-assembled polycrystalline barium carbonate/silica double helices are studied using fluorescent Fourier and Mueller matrix microscopy. Helices doped with fluorescein direct light emission along the long axis of the structure. Furthermore, light transmission measured normal and parallel to the long axis exhibits twist sense-specific circular retardance and waveguiding, respectively, although the measurements suffer from depolarization. The helices thus integrate highly directional emission with enantiomorph-specific polarization. This optical response emerges from the arrangement of nanoscopic mineral crystallites in the microscopic helix, and demonstrates how bottom-up assembly can achieve ordering across multiple length scales to form complex functional materials.
AB - Bottom-up assembly can organize simple building blocks into complex architectures for light manipulation. The optical properties of self-assembled polycrystalline barium carbonate/silica double helices are studied using fluorescent Fourier and Mueller matrix microscopy. Helices doped with fluorescein direct light emission along the long axis of the structure. Furthermore, light transmission measured normal and parallel to the long axis exhibits twist sense-specific circular retardance and waveguiding, respectively, although the measurements suffer from depolarization. The helices thus integrate highly directional emission with enantiomorph-specific polarization. This optical response emerges from the arrangement of nanoscopic mineral crystallites in the microscopic helix, and demonstrates how bottom-up assembly can achieve ordering across multiple length scales to form complex functional materials.
KW - bioinspired materials
KW - hierarchical structures
KW - optical microscopy
KW - polarimetry
KW - self-assembly
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U2 - 10.1002/adfm.201908218
DO - 10.1002/adfm.201908218
M3 - Article
AN - SCOPUS:85077152695
VL - 30
JO - Advanced Materials for Optics and Electronics
JF - Advanced Materials for Optics and Electronics
SN - 1057-9257
IS - 26
M1 - 1908218
ER -