Topological Transition Enabled by Surface Modification of Photonic Crystals

ACS Photonics ◽  
2021 ◽  
Author(s):  
Yanxin Lu ◽  
Qishan Liu ◽  
Yihang Chen ◽  
Zefeng Chen ◽  
Dan-Wei Zhang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Photonic Crystals ◽  
Topological Transition

Improvement on solvent resistance of photonic crystals by surface modification

2012 ◽  
Vol 414 ◽  
pp. 198-203 ◽  
Author(s):  
Bo-Tau Liu ◽  
Ya-Li Lin ◽  
Wen-Chang Liaw ◽  
Rong-Ho Lee ◽  
Sung-Hwa Lin
Keyword(s):  
Surface Modification ◽  
Photonic Crystals ◽  
Solvent Resistance

Tunable and programmable topological valley transport in photonic crystals with liquid crystals

2022 ◽  
Author(s):  
Yulin Zhao ◽  
Feng Liang ◽  
Xiangru Wang ◽  
Deshuang Zhao ◽  
Bing-Zhong Wang
Keyword(s):  
Wave Propagation ◽  
Liquid Crystals ◽  
Photonic Crystals ◽  
Symmetry Breaking ◽  
Relative Permittivity ◽  
Nematic Liquid Crystals ◽  
Inversion Symmetry ◽  
Edge States ◽  
Beam Splitting ◽  
Topological Transition

Abstract Topological valley transport in photonic crystals (PCs) has attracted great attention owing to its edge modes immune to backscattering. However, flexibly dynamically controlling and reconfiguring the pathway of the topological one-way propagation is still challenging. Here, we propose a tunable and programmable valley PC structure based on nematic liquid crystals (LCs). Inversion symmetry breaking and topological transition are implemented through controlling the relative permittivity of the LC cells. Topological protection of valley edge states and valley-locked beam splitting are demonstrated. Moreover, the LC-based PC can be discretized to a number of supercells, each of which can be coded with “0” or “1”. The wave propagation pathway can be dynamically reconfigured by programming different coding patterns.

scholarly journals Boosting visible light harvesting and charge separation in surface modified TiO2 photonic crystal catalysts with CoOx nanoclusters

2020 ◽  
Vol 1 (7) ◽  
pp. 2310-2322 ◽  
Author(s):  
Alexia Toumazatou ◽  
Maria Antoniadou ◽  
Elias Sakellis ◽  
Dimitra Tsoutsou ◽  
Spyros Gardelis ◽  
...  
Keyword(s):  
Surface Modification ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Visible Light ◽  
Charge Separation ◽  
Light Harvesting ◽  
Catalytic Applications ◽  
Surface Modified

Surface modification of co-assembled TiO2 photonic crystals by nanoscale Co-oxides boosts visible light harvesting and charge separation for catalytic applications.

Elusive photonic crystals come a step closer

Nature ◽  
2020 ◽  
Vol 585 (7826) ◽  
pp. 506-507
Author(s):  
John C. Crocker
Keyword(s):  
Photonic Crystals
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