Membrane admittance measurements under computer control |
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Authors: | Robert de Levie John W. Thomas Kathleen M. Abbey |
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Affiliation: | Department of Chemistry, Georgetown University, Washington D.C. 20057 U.S.A. |
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Abstract: | The application of the elegant Fourier transform method of Smith et al.3,4 to measurements on ultrathin, “black” lipid membrane is described. A digital computer generates a waveform containing many frequencies, applies it to the measurement cell containing an artificial, ultrathin membrane, collects the resulting electrical response, extracts the cell admittance by a substitution method, and facilitates subsequent numerical data analysis. The performance of the instrument is illustrated. |
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