Effects of elastic waves at several frequencies on biofilm formation in circulating types of laboratory biofilm reactors

Hideyuki Kanematsu, Shogo Maeda, Dana M. Barry, Senshin Umeki, Kazuyuki Tohji, Nobumitsu Hirai, Akiko Ogawa, Takeshi Kogo, Hajime Ikegai, Yoshimitsu Mizunoe

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Bacteria generally form biofilms on materials’ surfaces. These biofilms cause a variety of negative effects and need to be suppressed. The main purpose of this study is to suppress the formation of biofilm. For this work, we focused on the correlation between applied elastic waves (ultrasonic and audio ones) and biofilm formation in a circulating type of laboratory biofilm reactor (LBR). Several metallic specimens were inserted into the LBR and elastic waves were applied to them for a certain period of time. Then the specimens were removed from the system and their surfaces were observed by using an optical microscope and a staining test. In both cases (for ultrasonic and audio waves), biofilm formation could be suppressed. However, the results of the ultrasonic case were more remarkable than those of the audio waves. The mechanism to suppress biofilms is different and unique for each case.

Original languageEnglish
Pages (from-to)43-51
Number of pages9
JournalCeramic Transactions
Volume265
DOIs
Publication statusPublished - 2018

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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