Journal article

Magneto-electrical orientation of lipid-coated graphitic micro-particles in solution

Abstract:: We demonstrate, for the first time, confinement of the orientation of micron-sized graphitic flakes to a well-defined plane. We orient and rotationally trap lipid-coated highly ordered pyrolytic graphite (HOPG) micro-flakes in aqueous solution using a combination of uniform magnetic and AC electric fields and exploiting the anisotropic diamagnetic and electrical properties of HOPG. Measuring the rotational Brownian fluctuations of individual oriented particles in rotational traps, we quantitatively determine the rotational trap stiffness, maximum applied torque and polarization anisotropy of the micro-flakes, as well as their dependency on the electric field frequency. Additionally, we quantify interactions of the micro-particles with adjacent glass surfaces with various surface treatments. We outline the various applications of this work, including torque sensing in biological systems.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Nguyen, J., Antoranz Contera, S., & Llorente Garcia, I. (2016). Magneto-electrical orientation of lipid-coated graphitic micro-particles in solution. RSC Adv.

MLA Style

Nguyen, J., et al. “Magneto-Electrical Orientation of Lipid-Coated Graphitic Micro-Particles in Solution.” RSC Adv., Royal Society of Chemistry, 2016.

Chicago Style

Nguyen, J, S Antoranz Contera, and I Llorente Garcia. 2016. “Magneto-Electrical Orientation of Lipid-Coated Graphitic Micro-Particles in Solution.” RSC Adv.
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Files:: c6ra07657b.pdf

(Preview, Version of record, pdf, 2.1MB, Terms of use)

Publisher copy:: 10.1039/C6RA07657B

Authors

+ Nguyen, J More by this author

Role:: Author

+ Antoranz Contera, S More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Author

+ Llorente Garcia, I More by this author

Role:: Author

+ Engineering and Physical Sciences Research Council More from this funder

Publisher:: Royal Society of Chemistry
Journal:: RSC Adv. More from this journal
Publication date:: 2016-04-01
Acceptance date:: 2016-04-15
DOI:: 10.1039/C6RA07657B
EISSN:: 2046-2069

Pubs id:: pubs:618040
UUID:: uuid:182e069e-ea06-4cea-a792-464d818c63e3
Local pid:: pubs:618040
Source identifiers:: 618040
Deposit date:: 2016-04-27

Terms of use

Copyright holder:: The Royal Society of Chemistry
Copyright date:: 2016
Notes:: © The Royal Society of Chemistry 2016. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.

Licence:: CC Attribution (CC BY)

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