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Anisotropically Shaped Magnetic/Plasmonic Nanocomposites for Information Encryption and Magnetic-Field-Direction Sensing

Authors :
Xiaojing Wang
Ji Feng
Huakang Yu
Yue Jin
Andrew Davidson
Zhiyuan Li
Yadong Yin
Source :
Research, Vol 2018 (2018)
Publication Year :
2018
Publisher :
American Association for the Advancement of Science (AAAS), 2018.

Abstract

Instantaneous control over the orientation of anisotropically shaped plasmonic nanostructures allows for selective excitation of plasmon modes and enables dynamic tuning of the plasmonic properties. Herein we report the synthesis of rod-shaped magnetic/plasmonic core-shell nanocomposite particles and demonstrate the active tuning of their optical property by manipulating their orientation using an external magnetic field. We further design and construct an IR-photoelectric coupling system, which generates an output voltage depending on the extinction property of the measured nanocomposite sample. We employ the device to demonstrate that the nanocomposite particles can serve as units for information encryption when immobilized in a polymer film and additionally when dispersed in solution can be employed as a new type of magnetic-field-direction sensor.

Subjects

Subjects :
Science

Details

Language :
English
ISSN :
26395274
Volume :
2018
Database :
Directory of Open Access Journals
Journal :
Research
Publication Type :
Academic Journal
Accession number :
edsdoj.798586c9fd64e7ea69f7feed0cb8ad5
Document Type :
article
Full Text :
https://doi.org/10.1155/2018/7527825