A new magneto-optical phenomenon enhanced by Au nanoparticles on 3D Ni sub-microstructures.
Chenxin ZhouQingtong WangChanglin DongJiajun GuDi ZhangPublished in: RSC advances (2024)
We constructed a bio-structured surface-plasmonic/magneto-optic composite of ferromagnet metal Ni and noble metal Au. It was found that Ni Morpho menelaus (Mm) butterfly wings (BWs) with a natural photonic crystal structure have an apparent enhancement of light reflection under a 0.3 T magnetic field. Additional introduction of discrete Au particles helps further increase this magnetism-induced response. Compared with Mm-Ni-BWs, Mm-Ni-Au30-BWs' reflectance increases 5.3 times at 1944 nm. This investigation helps reveal and understand the effects of new micro-nanostructures on surface plasmon/magneto-optic coupling, benefiting future applications of biology sensors, chemical sensors, photonic chips, electrical communication systems, etc.
Keyphrases
- sensitive detection
- crystal structure
- reduced graphene oxide
- metal organic framework
- high speed
- transition metal
- optical coherence tomography
- visible light
- genome wide
- photodynamic therapy
- gene expression
- magnetic resonance imaging
- computed tomography
- single cell
- single molecule
- diabetic rats
- quantum dots
- gold nanoparticles
- drug induced
- dna methylation
- ionic liquid