TitleThe Effect of Sonication on Acoustic Propertiesof Biogenic Ferroparticle Suspension
Journal titleArchives of Acoustics
Keywordsmagnetosomes; sonication; ultrasonic properties
Divisions of PASNauki Techniczne
Archives of Acoustics is an English-language peer-reviewed quarterly journal publishing original research papers from all areas of acoustics and abstracts from some specialised acoustical conferences. It gives free internet access to its full content (abstracts of research papers) to current issues.
Archives of Acoustics, the peer-reviewed quarterly journal publishes original research papers from all areas of acoustics like:
- acoustical measurements and instrumentation,
- acoustics of musics,
- architectural, building and environmental acoustics,
- linear and nonlinear acoustics,
- noise and vibration,
- physical and chemical effects of sound,
- physiological acoustics,
- quantum acoustics,
- speech processing and communication systems,
- speech production and perception,
- underwater acoustics.
Earlier issues are available on the old website http://acoustics.ippt.gov.pl/index.php/aa/issue/archive
AbstractSuperparamagnetic iron oxide nanoparticles (SPION) synthesised chemically usually need the modification of the particle surface. Other natural sources of magnetic particles are various magnetotactic bacteria. Magnetosomes isolated from magnetotactic bacteria are organelles consisting of magnetite (Fe3O4) or greigite (Fe3S4) crystals enclosed by a biological membrane. Magnetotactic bacteria produce their magnetic particles in chains. The process of isolation of magnetosome chains from the body of bacteria consists of a series of cycles of centrifugation and magnetic decantation. Using a high-energy ultrasound it is possible to break the magnetosome chains into individual nanoparticles – magnetosomes. This study presents the effect of sonication of magnetosome suspension on their acoustic properties, that is speed and attenuation of the sound. Acoustic propagation parameters are measured using ultrasonic spectroscopy based on FFT spectral analysis of the received pulses. The speed and attenuation of ultrasonic waves in magnetosome suspensions are analysed as a function of frequency, temperature, magnetic field intensity, and the angle between the direction of the wave and the direction of the field.
PublisherCommittee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society
IdentifierISSN 0137-5075 ; eISSN 2300-262X