-transparent.png){kind=logo}
We show hierarchical assembly of plasmonic toroidal metamolecules that exhibit tailored optical activity in the visible spectral range. Each metamolecule consists of four identical origami-templated helical building blocks. Such toroidal metamolecules show a stronger chiroptical response than monomers and dimers of the helical building blocks. Enantiomers of the plasmonic structures yield opposite circular dichroism spectra. Experimental results agree well with the theoretical simulations. We also show that given the circular symmetry of the structures s distinct chiroptical response along their axial orientation can be uncovered via simple spin-coating of the metamolecules on substrates. Our work provides a new strategy to create plasmonic chiral platforms with sophisticated nanoscale architectures for potential applications such as chiral sensing using chemically based assembly systems.
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
December 2019,
ACS nano,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
March 2019,
Journal of visualized experiments : JoVE,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
October 2017,
Chemistry (Weinheim an der Bergstrasse, Germany),
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
May 2013,
Nano letters,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
January 2015,
Nanoscale,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
May 2020,
Nano letters,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
September 2014,
Nature materials,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
March 2021,
The journal of physical chemistry. C, Nanomaterials and interfaces,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
September 2019,
Science advances,
Maximilian J Urban, and
Palash K Dutta, and
Pengfei Wang, and
Xiaoyang Duan, and
Xibo Shen, and
Baoquan Ding, and
Yonggang Ke, and
Na Liu
April 2021,
Nano letters,
