Spectroscopic visualization of sound-induced liquid vibrations using a supramolecular nanofibre
Author: ["Akihiko Tsuda","Yuka Nagamine","Reiko Watanabe","Yoshiki Nagatani","Noriyuki Ishii","Takuzo Aida"]
Publication: Nature Chemistry
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Abstract
The question of whether sound vibration of a medium can bring about any kind of molecular or macromolecular events is a long-standing scientific controversy. Although it is known that ultrasonic vibrations with frequencies of more than 1 MHz are able to align certain macromolecules in solution, no effect has yet been reported with audible sound, the frequency of which is much lower (20–20,000 Hz). Here, we report on the design of a supramolecular nanofibre that in solution becomes preferentially aligned parallel to the propagation direction of audible sound. This phenomenon can be used to spectroscopically visualize sound-induced vibrations in liquids and may find application in a wide range of vibration sensing technologies. Although ultrasonic vibrations are known to be capable of aligning macromolecules in solution, the question of whether audible sound — which has much lower frequencies — can have such an effect is somewhat controversial. Now, however, it has been shown that supramolecular nanofibres can be preferentially aligned parallel to the propagation direction of audible sound.
Cite this article
Tsuda, A., Nagamine, Y., Watanabe, R. et al. Spectroscopic visualization of sound-induced liquid vibrations using a supramolecular nanofibre. Nature Chem 2, 977–983 (2010). https://doi.org/10.1038/nchem.825
