Improved stability of free-standing lipid bilayers based on nanoporous alumina films

Ayumi Hirano-Iwata; Tasuku Taira; Azusa Oshima; Yasuo Kimura; Michio Niwano

doi:10.1063/1.3441298

Improved stability of free-standing lipid bilayers based on nanoporous alumina films

Ayumi Hirano-Iwata, Tasuku Taira, Azusa Oshima, Yasuo Kimura, Michio Niwano

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

In this study, we propose a method for improving the stability of free-standing bilayer lipid membranes (BLMs) by preparing BLMs across nanoporous alumina films. The use of porous alumina reduced individual membrane size to improve the BLM stability. The BLMs were stable under an applied voltage of ±1 V. The lifetime of the BLMs was 16-30 h with and without incorporated gramicidin channels. Electric properties of the BLMs as a platform for channel-current recordings are also discussed. Since the total area of the BLMs is still large to facilitate protein incorporation, our approach is useful for designing highly sensitive biosensors based on channel proteins.

Original language	English
Article number	213706
Journal	Applied Physics Letters
Volume	96
Issue number	21
DOIs	https://doi.org/10.1063/1.3441298
Publication status	Published - 2010 May 24

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3441298

Cite this

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abstract = "In this study, we propose a method for improving the stability of free-standing bilayer lipid membranes (BLMs) by preparing BLMs across nanoporous alumina films. The use of porous alumina reduced individual membrane size to improve the BLM stability. The BLMs were stable under an applied voltage of ±1 V. The lifetime of the BLMs was 16-30 h with and without incorporated gramicidin channels. Electric properties of the BLMs as a platform for channel-current recordings are also discussed. Since the total area of the BLMs is still large to facilitate protein incorporation, our approach is useful for designing highly sensitive biosensors based on channel proteins.",

author = "Ayumi Hirano-Iwata and Tasuku Taira and Azusa Oshima and Yasuo Kimura and Michio Niwano",

note = "Funding Information: This work was supported by Grant-in-Aids from Japan Society for the Promotion of Science (Grant Nos. 21350038 and 20246008) and by JST PRESTO program. Financial supports from Takeda Science Foundation and The Asahi Glass Foundation are also acknowledged.",

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AU - Hirano-Iwata, Ayumi

AU - Taira, Tasuku

AU - Oshima, Azusa

AU - Kimura, Yasuo

AU - Niwano, Michio

N1 - Funding Information: This work was supported by Grant-in-Aids from Japan Society for the Promotion of Science (Grant Nos. 21350038 and 20246008) and by JST PRESTO program. Financial supports from Takeda Science Foundation and The Asahi Glass Foundation are also acknowledged.

PY - 2010/5/24

Y1 - 2010/5/24

N2 - In this study, we propose a method for improving the stability of free-standing bilayer lipid membranes (BLMs) by preparing BLMs across nanoporous alumina films. The use of porous alumina reduced individual membrane size to improve the BLM stability. The BLMs were stable under an applied voltage of ±1 V. The lifetime of the BLMs was 16-30 h with and without incorporated gramicidin channels. Electric properties of the BLMs as a platform for channel-current recordings are also discussed. Since the total area of the BLMs is still large to facilitate protein incorporation, our approach is useful for designing highly sensitive biosensors based on channel proteins.

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Improved stability of free-standing lipid bilayers based on nanoporous alumina films

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