Dongliang Tian, Zhiyuan Wang, Bin Han, Jie Song, Chunying Liu, Zhihui Chen, Yang Wang
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Study on the fluorescence enhancement characteristics of double-layer dislocated metal gratings
In this paper, a double-layer dislocated metal grating hybrid structure is proposed, which is composed of a dislocated metal grating and an inclined dielectric grating. By locating the fluorescent material in the polymethyl methacrylate (PMMA) region of the hybrid structure, the structure achieves a remarkable far-field fluorescence directional emission enhancement. The effects of polarization state, metal grating period, and other parameters on directional fluorescence emission enhancement are studied by the finite-difference time-domain method. After optimizing the parameters, the fluorescence enhancement factor is as high as 1560-fold, of which the emission enhancement is 39-fold and the excitation enhancement is 40-fold. The far-field radiation angle is less than 18°, and the far-field radiation characteristics are improved. This work has application potential in fluorescence detection, imaging, and other luminescence devices.
期刊介绍:
The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study:
Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability.
Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine.
Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices.
Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive.
Bioelectronics
Conductors
Detectors
Dielectrics
Displays
Ferroelectrics
Lasers
LEDs
Lighting
Liquid crystals
Memory
Metamaterials
Multiferroics
Photonics
Photovoltaics
Semiconductors
Sensors
Single molecule conductors
Spintronics
Superconductors
Thermoelectrics
Topological insulators
Transistors