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Static magnetic field concentration and enhancement using magnetic materials with positive permeability
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.ORCID iD: 0000-0002-3401-1125
2013 (English)In: Progress In Electromagnetics Research, ISSN 1070-4698, E-ISSN 1559-8985, Vol. 142, 579-590 p.Article in journal (Refereed) Published
Abstract [en]

In this paper a novel compressor for static magnetic fields is proposed based on finite embedded transformation optics. When the DC magnetic field passes through the designed device, the magnetic field can be compressed inside the device. After it passes through the device, one can obtain an enhanced static magnetic field behind the output surface of the device (in a free space region). We can also combine our compressor with some other structures to get a higher static magnetic field enhancement in a free space region. In contrast with other devices based on transformation optics for enhancing static magnetic fields, our device is not a closed structure and thus has some special applications (e.g., for controlling magnetic nano-particles for gene and drug delivery). The designed compressor can be constructed by using currently available materials or DC meta-materials with positive permeability. Numerical simulation verifies good performance of our device.

Place, publisher, year, edition, pages
2013. Vol. 142, 579-590 p.
Keyword [en]
Closed structures, DC magnetic field, Free spaces, Magnetic nano-particles, Special applications, Static magnetic fields, Transformation optics
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-133246DOI: 10.2528/PIER13082102ISI: 000327478000034Scopus ID: 2-s2.0-84884574406OAI: oai:DiVA.org:kth-133246DiVA: diva2:660495
Funder
Swedish Research Council, 621-2011-4620
Note

QC 20131030

Available from: 2013-10-30 Created: 2013-10-29 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Transformation Optics for Controlling DC Magnetic Field
Open this publication in new window or tab >>Transformation Optics for Controlling DC Magnetic Field
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Based on the form-invariant of Maxwell’s equations under coordinate transformations, we extend the theoryof transformation optics to transformation magneto-statics, which can design magnets through coordinatetransformations. Some novel DC magnetic field illusions created by magnets (e.g. rescaling magnets,cancelling magnets and overlapping magnets) are designed and verified by numerical simulations. Ourresearch will open a new door to designing magnets and controlling DC magnetic fields.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. xiv, 81 p.
Series
TRITA-EE, ISSN 1653-5146 ; 2014:051
Keyword
Transformation magneto-statics, magnets, DC magnetic field
National Category
Materials Engineering Electrical Engineering, Electronic Engineering, Information Engineering Other Physics Topics
Research subject
Electrical Engineering; Materials Science and Engineering
Identifiers
urn:nbn:se:kth:diva-155326 (URN)978-91-7595-328-1 (ISBN)
Public defence
2014-12-01, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20141105

Available from: 2014-11-05 Created: 2014-11-04 Last updated: 2014-11-05Bibliographically approved

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He, Sailing

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