期刊
NANO LETTERS
卷 10, 期 4, 页码 1347-1353出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl9042104
关键词
Nanorods; liquid crystals; optical metamaterials; self-assembly; plasmonic nanoparticles
类别
资金
- International Institute for Complex Adaptive Matter [ICAM-I2CAM]
- University of Colorado
- NSF [DMR 0645461, DMR-0820579, DMR-0847782]
- National Basic Research program of China [2004CB719800]
- Direct For Mathematical & Physical Scien [844115] Funding Source: National Science Foundation
- Division Of Materials Research [844115] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0820579] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0847782] Funding Source: National Science Foundation
We demonstrate the bulk self-alignment of dispersed gold nanorods imposed by the intrinsic cylindrical micelle self-assembly in nematic and hexagonal liquid crystalline phases of anisotropic fluids. External magnetic field and shearing allow for alignment and realignment of the liquid crystal matrix with the ensuing long-range orientational order of well-dispersed plasmonic nanorods. This results in a switchable polarization-sensitive plasmon resonance exhibiting stark differences from that of the same nanorods in isotropic fluids. The device-scale bulk nanoparticle alignment may enable optical metamaterial mass production and control of properties arising from combining the switchable nanoscale structure of anisotropic fluids with the surface plasmon resonance properties of the plasmonic nanorods.
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