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Issue 3, 2019
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Inherently magnetic hydrogel for data storage based on the magneto-optical Kerr effect

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Abstract

In this data explosion age, a large amount of data is generated every day. Such a fast data growth has aroused great interest in the field of data storage. Conventional data storage materials are mainly composed of hard and brittle materials but they may break in the case of mechanical operations, causing irreversible data loss. In this work, efforts have been devoted to fabricating a flexible and stretchable double network hydrogel for data storage based on the magneto-optical Kerr effect. The hydrogel possesses a storage modulus of over 104 Pa and remains unbroken under a strain of 3000%. The surface of the hydrogel is patterned with diamagnetic parts and paramagnetic parts alternately. When placed under a magnetic field, the surface of the hydrogel reflects the incident laser beam and changes the polarization plane of the reflected light. The outstanding flexibility and inherent magnetic properties of this hydrogel lay the groundwork for data storage and guarantee data safety.

Graphical abstract: Inherently magnetic hydrogel for data storage based on the magneto-optical Kerr effect

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Publication details

The article was received on 01 Nov 2018, accepted on 04 Dec 2018 and first published on 05 Dec 2018


Article type: Paper
DOI: 10.1039/C8SM02234H
Soft Matter, 2019,15, 393-398

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    Inherently magnetic hydrogel for data storage based on the magneto-optical Kerr effect

    Q. Gui, Y. Zhou, S. Liao, Y. He, Y. Tang and Y. Wang, Soft Matter, 2019, 15, 393
    DOI: 10.1039/C8SM02234H

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