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- W2074030763 abstract "Recently, a bio-inspired, synthetic membrane-based hair cell sensor was fabricated and characterized. This sensorgenerates current in response to mechanical stimuli, such as airflow or free vibration, which perturb the sensor’s hair.Vibration transferred from the hair to a lipid membrane (lipid bilayer) causes a voltage-dependent time rate of change inelectrical capacitance of the membrane, which produces measurable current. Studies to date have been performed onsystems containing only two droplets and a single bilayer, even though an array of multiple bilayers can be formed withmore than 2 droplets. Thus, it is yet to be determined how multiple lipid bilayers affect the sensing response of amembrane-based hair cell sensor. In this work, we assemble serial droplet arrays with more than 1 bilayer toexperimentally study the current generated by each membrane in response to perturbation of a single hair element. Twoserial array configurations are studied: The first consists of a serial array of 3 bilayers formed using 4 droplets with thehair positioned in an end droplet. The second configuration consists of 3 droplets and 2 bilayers in series with the hairpositioned in the central droplet. In serial arrays of up to four droplets, we observe that mechanotransduction of thehair’s motion into a capacitive current occurs at every membrane, with bilayers positioned adjacent to the dropletcontaining the hair generating the largest sensing current. The measured currents suggest the total current generated byall bilayers in a 4-droplet, 3-bilaye array is greater than the current produced by a single-membrane sensor and similar inmagnitude to the sum of currents output by 3, single-bilayer sensors operated independently. Moreover, we learned thatbilayers positioned on the same side of the hair produce sensing currents that are in-phase, whereas bilayers positionedon opposite sides of the droplet containing the hair generate out-of-phase responses." @default.
- W2074030763 created "2016-06-24" @default.
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- W2074030763 date "2014-03-25" @default.
- W2074030763 modified "2023-09-23" @default.
- W2074030763 title "Role of the array geometry in multi-bilayer hair cell sensors" @default.
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- W2074030763 doi "https://doi.org/10.1117/12.2045377" @default.
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