Spectroscopic visualization of sound-induced liquid vibrations using a supramolecular nanofibre.
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.
Tsuda
Akihiko
A
Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan. tsuda@harbor.kobe-u.ac.jp
Nagamine
Yuka
Y
Watanabe
Reiko
R
Nagatani
Yoshiki
Y
Ishii
Noriyuki
N
Aida
Takuzo
T
D009682:Magnetic Resonance Spectroscopy; D008665:Metalloporphyrins / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers; D013057:Spectrum Analysis / Q000379:methods*; D014732:Vibration
D008665:Metalloporphyrins; C017802:zinc hematoporphyrin