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| Presentation | 2023-02-28 15:00 Temperature dependence of specific capacitance extracted from repeated EIS measurements of free-standing DPPC bilayer membranes Shoya Ueda, Yoshihiro Shimada, Daiki Hiramatsu, Masataka Moriya (UEC Tokyo), Daisuke Tadaki, Ayumi Hirano-Iwata (Tohoku Univ.), Yoshinao Mizugaki (UEC Tokyo)  CPM2022-102 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Bilayer lipid membranes (BLMs) formed in micropores are referred to as free-standing BLMs. The folding method is a technique to form a free-standing BLM. Recently, the yield of free-standing BLM formation has been improved by using micropores fabricated in Si/SiNx chips, whereas BLM capacitance should be extracted by means of electrochemical impedance spectroscopy (EIS) with equivalent circuit analysis. Among a lot of phospholipids, DPPC is known to undergo phase transitions at around room temperature, resulting in discontinuous changes of the BLM capacitance. In this study, EIS measurements were performed repeatedly for free-standing DPPC bilayers while changing the temperature. The temperature dependence of the area-specific capacitance was extracted from equivalent circuit analysis of the EIS results. As a result, although no clear discontinuous capacitance changes were observed, inflection points were confirmed around the phase transition temperatures. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | lipid bilayer membrane / folding method / equivalent circuit analysis / phase transition / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 392, CPM2022-102, pp. 62-65, Feb. 2023. | |
| Paper # | CPM2022-102 | |
| Date of Issue | 2023-02-21 (CPM) | |
| ISSN | 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 | CPM2022-102 |
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| Conference Information | |
| Committee | CPM |
| Conference Date | 2023-02-28 - 2023-02-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo University of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | CPM |
| Conference Code | 2023-02-CPM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Temperature dependence of specific capacitance extracted from repeated EIS measurements of free-standing DPPC bilayer membranes |
| Sub Title (in English) | |
| Keyword(1) | lipid bilayer membrane |
| Keyword(2) | folding method |
| Keyword(3) | equivalent circuit analysis |
| Keyword(4) | phase transition |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Shoya Ueda |
| 1st Author's Affiliation | The University of Electro-Communications (UEC Tokyo) |
| 2nd Author's Name | Yoshihiro Shimada |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC Tokyo) |
| 3rd Author's Name | Daiki Hiramatsu |
| 3rd Author's Affiliation | The University of Electro-Communications (UEC Tokyo) |
| 4th Author's Name | Masataka Moriya |
| 4th Author's Affiliation | The University of Electro-Communications (UEC Tokyo) |
| 5th Author's Name | Daisuke Tadaki |
| 5th Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 6th Author's Name | Ayumi Hirano-Iwata |
| 6th Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 7th Author's Name | Yoshinao Mizugaki |
| 7th Author's Affiliation | The University of Electro-Communications (UEC Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2023-02-28 15:00:00 |
| Presentation Time | 15 minutes |
| Registration for | CPM |
| Paper # | CPM2022-102 |
| Volume (vol) | vol.122 |
| Number (no) | no.392 |
| Page | pp.62-65 |
| #Pages | 4 |
| Date of Issue | 2023-02-21 (CPM) |
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