Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2013-01-24 15:50
Characterization of Magnetic Markers for Liquid-Phase Immunoassays Using SQUID
Yuichi Higuchi, Shinobu Uchida, Yuta Ueoka, Takashi Yoshida, Keiji Enpuku (Kyushu Univ.), Akira Tsukamoto, Seiji Adachi, Keiichi Tanabe (SRL) SCE2012-38
Abstract (in Japanese) (See Japanese page) 
(in English) We have been developing a liquid-phase immunoassay technique for the detection of biological targets using SQUID and magnetic markers. The performance of the magnetic detection method depends on the property of the magnetic markers, as well as the sensitivity of the measurement system. At present, however, development of the magnetic markers that are suitable for magnetic immunoassay is not established. Since magnetic markers are usually composed of aggregated magnetic nanoparticles, their properties are significantly affected by the degree of aggregation. Therefore, we obtained the distribution of the magnetic moment m and the Neel relaxation time N of the aggregated particles included in the markers through the analysis of magnetization (M-H) and AC susceptibility measurements. We also determined the relationship between m and N. Using the obtained result, we selected the magnetic marker that is suitable for magnetic immunoassay. We also improved the measurement system using the HTS SQUID, and demonstrated the high sensitive detection of biological targets with the liquid-phase immunoassay.
Keyword (in Japanese) (See Japanese page) 
(in English) SQUID / Magnetic Marker / Magnetic Nanoparticle / Biosensor / Immunoassay / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 408, SCE2012-38, pp. 75-80, Jan. 2013.
Paper # SCE2012-38 
Date of Issue 2013-01-17 (SCE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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)
Download PDF SCE2012-38

Conference Information
Committee SCE  
Conference Date 2013-01-24 - 2013-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Okayama Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Superconducting sensing technologies and their applications, etc. 
Paper Information
Registration To SCE 
Conference Code 2013-01-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Characterization of Magnetic Markers for Liquid-Phase Immunoassays Using SQUID 
Sub Title (in English)  
Keyword(1) SQUID  
Keyword(2) Magnetic Marker  
Keyword(3) Magnetic Nanoparticle  
Keyword(4) Biosensor  
Keyword(5) Immunoassay  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yuichi Higuchi  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Shinobu Uchida  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Yuta Ueoka  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
4th Author's Name Takashi Yoshida  
4th Author's Affiliation Kyushu University (Kyushu Univ.)
5th Author's Name Keiji Enpuku  
5th Author's Affiliation Kyushu University (Kyushu Univ.)
6th Author's Name Akira Tsukamoto  
6th Author's Affiliation Superconductivity Research Laboratory (SRL)
7th Author's Name Seiji Adachi  
7th Author's Affiliation Superconductivity Research Laboratory (SRL)
8th Author's Name Keiichi Tanabe  
8th Author's Affiliation Superconductivity Research Laboratory (SRL)
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2013-01-24 15:50:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2012-38 
Volume (vol) vol.112 
Number (no) no.408 
Page pp.75-80 
#Pages 6 
Date of Issue 2013-01-17 (SCE) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan