Journal
LANGMUIR
Volume 28, Issue 36, Pages 13112-13117Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la302353t
Keywords
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Funding
- National Science Foundation of China [21001083]
- Major State Basic Research Development Program of China [2011CB932404]
- Shanghai Pujiang Program [10PJ1409800]
- SRF for ROCS (SEM)
- Fundamental Research Funds for the Central Universities
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Ag nanoplates and Fe3O4 nanoparticle-based ferrofluids were utilized to fabricate a magnetic field controlled optic switch. The changing of light transmittance (LT) is caused by the rotation of Ag nanoplates, whose long axis always follows the orientation of external magnetic field to minimize the potential energy. The sensitivity of switching was optimized by choosing Ag nanoplates with appropriate size and concentration. The switching of transmission is proved to be fast and fully reversible. This phenomenon not only indicates an effective method to adjust the propagation of optical signals, but also reveals the possibility and great potential to develop magnetic controlled functional devices.
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