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Paper Abstract and Keywords
Presentation 2025-01-23 14:40
Signal Acquisition of Magnetic Nanoparticles Using Optically Pumped Magnetometer -- Study on Comparison of Signal Strength in Liquid and Solid Phases --
Sota Sato, taue shuji (Kochi Univ Tech.), Sasayama Teruyoshi (Kyusyu Univ.) EMCJ2024-94
Abstract (in Japanese) (See Japanese page) 
(in English) To detect and estimate the position of MNPs accumulated in cancer cells, we acquired magnetic signals using optically pumped magnetometer. Due to the difference in phase, the magnetic relaxation of the MNPs is affected, and the intensity of the signal changes. The excitation magnetic field for magnetizing MNPs was experimented with below the reference level of the guidelines set by the ICNIRP. Since the signal field from the magnetic nanoparticles has a phase delay due to magnetic relaxation relative to the excitation field from the coil, the phase sensitive detection of the lock-in amplifier was used to separate the respective field signals. By changing the frequency of the excitation field, the signal field intensity from the particles in the liquid phase and the solid phase was compared. As a result, the magnetic signal in the solid phase was weaker than in the liquid phase in the frequency range of 130 kHz or higher, and the change in the magnetic signal due to the difference in phase was confirmed.
Keyword (in Japanese) (See Japanese page) 
(in English) Magnetic nanoparticle / Magnetic particle imaging / Optically pumped magnetometeter / Lock-in amplifer / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 343, EMCJ2024-94, pp. 12-16, Jan. 2025.
Paper # EMCJ2024-94 
Date of Issue 2025-01-16 (EMCJ) 
ISSN Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ  
Conference Date 2025-01-23 - 2025-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Kochijo Holl 
Topics (in Japanese) (See Japanese page) 
Topics (in English) EMC 
Paper Information
Registration To EMCJ 
Conference Code 2025-01-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Signal Acquisition of Magnetic Nanoparticles Using Optically Pumped Magnetometer 
Sub Title (in English) Study on Comparison of Signal Strength in Liquid and Solid Phases 
Keyword(1) Magnetic nanoparticle  
Keyword(2) Magnetic particle imaging  
Keyword(3) Optically pumped magnetometeter  
Keyword(4) Lock-in amplifer  
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1st Author's Name Sota Sato  
1st Author's Affiliation Kochi University of Technology (Kochi Univ Tech.)
2nd Author's Name taue shuji  
2nd Author's Affiliation Kochi University of Technology (Kochi Univ Tech.)
3rd Author's Name Sasayama Teruyoshi  
3rd Author's Affiliation Kyusyu University (Kyusyu Univ.)
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Speaker Author-1 
Date Time 2025-01-23 14:40:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2024-94 
Volume (vol) vol.124 
Number (no) no.343 
Page pp.12-16 
#Pages 5 
Date of Issue 2025-01-16 (EMCJ) 

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