Single half-wavelength ultrasonic particle filter: predictions of the transfer matrix multilayer resonator model and experimental filtration results

The Journal of the Acoustical Society of America
Jeremy J HawkesHelmut Nowotny

Abstract

The quantitative performance of a "single half-wavelength" acoustic resonator operated at frequencies around 3 MHz as a continuous flow microparticle filter has been investigated. Standing wave acoustic radiation pressure on suspended particles (5-microm latex) drives them towards the center of the half-wavelength separation channel. Clarified suspending phase from the region closest to the filter wall is drawn away through a downstream outlet. The filtration efficiency of the device was established from continuous turbidity measurements at the filter outlet. The frequency dependence of the acoustic energy density in the aqueous particle suspension layer of the filter system was obtained by application of the transfer matrix model [H. Nowotny and E. Benes, J. Acoust. Soc. Am. 82, 513-521 (1987)]. Both the measured clearances and the calculated energy density distributions showed a maximum at the fundamental of the piezoceramic transducer and a second, significantly larger, maximum at another system's resonance not coinciding with any of the transducer or empty chamber resonances. The calculated frequency of this principal energy density maximum was in excellent agreement with the optimal clearance frequency for the four tested ...Continue Reading

References

Jul 1, 1994·Biotechnology Progress·O Doblhoff-DierE Benes
Jan 1, 1996·Biotechnology Progress·T GaidaE Benes
Aug 5, 1989·Biotechnology and Bioengineering·D G KilburnD W Bardsley

❮ Previous
Next ❯

Citations

May 17, 2008·Biomedical Microdevices·Raymond Mariella
Mar 17, 2004·Biosensors & Bioelectronics·Jeremy J HawkesMartin B McDonnell
Oct 26, 2005·Biosensors & Bioelectronics·Stacey P MartinW Terence Coakley
Feb 15, 2005·Ultrasound in Medicine & Biology·Lisa GherardiniAiden J McLoughlin
Mar 8, 2005·Ultrasound in Medicine & Biology·Despina BazouW Terence Coakley
Nov 5, 2003·Ultrasound in Medicine & Biology·Sanjay KhannaW Terence Coakley
Feb 18, 2010·Lab on a Chip·Rune BarnkobHenrik Bruus
Oct 21, 2011·Lab on a Chip·Henrik Bruus
Jan 8, 2013·Lab on a Chip·Jeremy J Hawkes, Stefan Radel
Oct 26, 2010·The Journal of the Acoustical Society of America·C R P CourtneyM Hill
Apr 8, 2010·The Journal of the Acoustical Society of America·David KarpulGregory Cohen
Mar 12, 2013·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Hans Cappon, Karel J Keesman
Mar 2, 2005·Ultrasonics·Tobias LilliehornStefan Johansson
Dec 14, 2004·Journal of Microbiological Methods·K A J BorthwickM Gröschl
Nov 1, 2005·Biosensors & Bioelectronics·Larisa A KuznetsovaW Terence Coakley
Mar 31, 2004·Lab on a Chip·Andreas NilssonThomas Laurell
Jul 27, 2018·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Andrew D LedbetterJ Mark Meacham
Aug 13, 2005·Molecular Membrane Biology·Despina BazouW Terence Coakley
Dec 3, 2003·The Journal of the Acoustical Society of America·Martyn Hill
Feb 9, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Larisa A KuznetsovaW Terence Coakley

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.