Laser-Induced Patterned Photonic Crystal Heterostructure for Multimetal Ion Recognition
- 27 December 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 13 (3), 4330-4339
- https://doi.org/10.1021/acsami.0c18500
Abstract
In this work, a new method of direct laser writing patterned photonic crystal heterostructure on a glass surface is proposed. A multi-heterostructure photonic crystal (MHPC) is predeposited on the glass surface and then the laser spot is focused on it and moves according to the set program, leading to the formation of patterned MHPC. Scanning electron microscopy (SEM) and finite element simulation show that the patterning is caused by the local thermal annealing of the polymer colloidal spheres through the thermal conduction effect of the substrate on the laser energy. The patterned area presents a function of the water confinement effect and can be used as a high-performance droplet analysis chip. By integrating the patterned MHPC array and seven fluorescent dyes, nine metal ions can be successfully recognized and discriminated. This approach is quite facile and fast for designing colloidal photonic crystals with controllable patterns. Moreover, it is of considerable significance for the practical application of photonic crystal heterostructure in the detection, sensing, anti-counterfeiting, and display fields.Funding Information
- Ministry of Education of the People's Republic of China (DUT20GJ208, DUT20LK40)
- China Postdoctoral Science Foundation (2019T120203)
- Doctoral Start-up Foundation of Liaoning Province (2020-BS-058)
- Natural Science Foundation of Liaoning Province (2020-MS-112)
- National Natural Science Foundation of China (21872018, 21902020, 22072011, 51703017)
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