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Audible Sound Controlled Blue Bottle Experiment

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Title
Audible Sound Controlled Blue Bottle Experiment
Author(s)
Lee, Ilbong; Ilha Hwang; Mukhopadhyay, Rahul Dev; Kimoon Kim
Publication Date
2022-03
Journal
Journal of Chemical Education, v.99, no.3, pp.1539 - 1544
Publisher
American Chemical Society
Abstract
© 2022 American Chemical Society and Division of Chemical Education, Inc.The formation of chemical patterns is in general difficult to control due to the random diffusive motions of the reacting chemical species in solution. In this paper, we present a new method using audible sound to control the formation of chemical patterns obtained in blue bottle experiments. The waves generated on the surface of the solution by applying audible sound result in the nonuniform dissolution of atmospheric gases such as oxygen at the nodal and antinodal positions. On the basis of this phenomenon, the shapes of the patterns could be tuned according to the characteristics of the applied sound input, such as frequency and amplitude. This is an easy way for students to follow and control redox-responsive and pH-responsive chemical reactions in solution. The experiments involve chemicals that are mostly nontoxic and are easy to demonstrate since they involve common electronic gadgets (e.g., smartphones, Bluetooth speakers, etc.). These experiments provide interesting demonstration activities as well as a new understanding of utilizing audible sound for controlling chemical reactions.
URI
https://pr.ibs.re.kr/handle/8788114/11586
DOI
10.1021/acs.jchemed.1c01146
ISSN
0021-9584
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > 1. Journal Papers (저널논문)
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