Navigation Links
Virus filters for medical diagnosis

This release is available in German.

Providing reliable evidence of viruses in human blood presently requires time- and labor-intensive molecular-biological procedures. Established methods are particularly hard pushed to produce evidence when the viral burden is very low, for example during a phase of therapy. This could soon change. While developing new types of micro-pumps without movable parts, scientists from the Fraunhofer Institute for Biomedical Engineering IBMT came across an unexpected phenomenon: stable turbulence structures formed in the microscale pump channels. The nano- and microparticles actually intended to verify the pump effect accumulated in large quantities in the channels. The vortex patterns completely filled the whole microchannel, creating a virtually 100% trap for the particles that followed the generated flow profile, although there is a very large cross-section to flow through. "The development of flow vortices is nothing unusual on the macroscopic scale. However, in microchannels the flow lines almost run in parallel," explains Richard Stein from the IBMT. "The question, therefore, was, how is it possible for vortices to be formed from this which were sufficiently stable and effective for the concentration of nanoparticles?"

Experiments were not successful in determining the parameters by which the filter effect could be systematically controlled. This is because in the pump mechanism examined, high-frequency electrical traveling waves propel the fluid into the microchannels, superimposing a large number of effects on one another.

"In order to understand the complex procedures, there was a clear need for a theoretical description. My task was to describe the surprising phenomenon and to make it controllable," reflects Richard Stein. In his thesis "Mathematical modeling, analysis and numerical simulation of electrothermally driven micropumps", Richard Stein succeeded in explaining the development of the vortex pattern. To this end, he had to factor in all the relevant processes of an electrical, thermal and hydrodynamic nature in a three-dimensional model. Mr. Stein will receive the 1st Hugo Geiger Prize for this paper. The findings contained in the paper explain the observed effects completely, so that now both effective micropumps and efficient particle filters can be developed and built for many biomedical applications.


Contact: Stephanie Schwarz

Related medicine news :

1. New Vaccine from Intervet/Schering-Plough Animal Health is First for Canine Influenza Virus
2. HIV Atlas Shows Virus Targeting Minorities
3. Hepatitis C Virus Market Will Expand Dramatically From $2 Billion in 2008 to Nearly $7.7 Billion in 2013
4. Lethality of H1N1 Influenza Virus Increasing According to Latest Replikin Analysis of Virus Peptide Genomic Data
5. DEP Asks Pennsylvanians to Help Battle West Nile Virus
6. Aethlon Medical Releases Shareholder Letter to Discuss the Treatment of Hepatitis-C Virus (HCV)
7. CEL-SCI Expands Testing of Its Vaccine to Determine Efficacy Against More Virulent Strain of H1N1 Swine and Other Influenza Viruses
8. Health Department Reports Pennsylvanias First Death Due to 2009 Novel Influenza A/H1N1 Virus
9. Global Testing Shows No Variation in Swine Flu Virus
10. New arenavirus discovered as cause of hemorrhagic fever outbreak in South Africa and Zambia
11. Study to Investigate AHCC and the Swine Flu Virus
Post Your Comments:
Related Image:
Virus filters for medical diagnosis
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... ... hands of philanthropic seniors, is resulting in a way for homeless people to ... in Schaumburg have launched a new initiative whereby they are repurposing plastic bags ...
(Date:11/25/2015)... ... November 25, 2015 , ... Students and parents have ... to winners of the Create Real Impact awards. California Casualty is proud ... stem the tide of distracted and reckless driving, the number one killer of young ...
(Date:11/24/2015)... ... ... Dr. Todd S. Afferica, a noted general dentist in Norcross, GA ... Afferica now uses the BIOLASE WaterLase iPlus 2.0™ in many of his dental procedures. ... traditional cutting tools, such as the scalpel and high-speed drill, which can both cause ...
(Date:11/24/2015)... ... November 24, 2015 , ... ThirdLove, the fast-growing bra company ... early, offering 40% off select bras and underwear styles, now through Saturday, November ... fit technology and the latest fashion, quickly becoming the next generation of luxury ...
(Date:11/24/2015)... ... November 24, 2015 , ... The hospitals and ... several aspects of orthopedic care. They have received recognition for excellence from various ... care. , Becker's Hospital Review selected hospitals for inclusion based on national ...
Breaking Medicine News(10 mins):
(Date:11/25/2015)... 2015 ... the  "Global Drug Device Combination Products ... offering.  --> ) ... "Global Drug Device Combination Products Market ... --> Research and Markets ( ...
(Date:11/24/2015)... CARLOS, Calif. , Nov. 24, 2015 ... a leader in non-invasive genetic testing and ... announced that it will present at the ... in New York on Wednesday, December 2, 2015 at 1:00 p.m. ET.  Matthew ... the Company,s financial results, business activities and ...
(Date:11/24/2015)... Nueva York , 24 de noviembre de ... del Avery Breathing Pacemaker System, se complace anunciar ... Ph.D. como consultor clínico. ... Foto -   ... Jonzon es un fisiólogo y consultor en neonatología ...
Breaking Medicine Technology: