HOME >> BIOLOGY >> NEWS
Atomic force microscope used to measure how well live bacteria stick

(Blacksburg, Va., September 9, 2003) Virginia Tech researchers are using a modified form of atomic force microscopy (AFM) to observe at subatomic levels the efficiency of the attachment of bacteria to silica surfaces.

The geological scientists are simulating environments similar to ground water in sandy soils. Sticking efficiency of bacteria has not been previously measured experimentally using the AFM.

Graduate student Tracy Cail will report the research results at the 226th American Chemical Society National Meeting in New York City September 7-11.

She reported in March on her initial experiments to see if the AFM could be used to measure sticking efficiencies at the nanoscale (www.eurekalert.org/pub_releases/2003-03/vt-afm031703.php) - also the first such experiments. Virginia Tech researchers have developed a cantilever for use in the AFM that allows them to study the attractions between microparticles.

"The same technique can also be applied to natural systems," she says.

Cail is developing a new method for predicting how bacteria and other contaminants can be transported in groundwater. "If we understand how they stick to various surfaces then we can use the information to design filters," she says.

For her research, Cail is using the bacteria, Enterococcus faecalis, because they are easy to model. "They look like the carboxylated polystyrene beads I used to do the initial work with the AFM. They are spherical, hard, and smooth, and are about 1 micron."

The bacteria are also plentiful. "They thrive in the Virginia Tech duck pond. They live naturally in human intestines but are serious hospital pathogens," she says.

"I'm looking at groundwater applications, but there is an area for expansion in terms of controls in hospital environments," she adds.

She found that Enterococcus faecalis are surprisingly robust. "They survived being put in a vacuum, long periods without food, and the imaging p
'"/>

Contact: Susan Trulove
strulove@vt.edu
540-231-5646
Virginia Tech
9-Sep-2003


Page: 1 2

Related biology news :

1. Atomic force microscope powerful new tool for measurement of particle attraction
2. Atomic structure identified for gene-regulating molecule: Broad implications for cancers, autoimmunity, developmental disorders
3. Scientists Determine Atomic Structure Of Lego-Like Molecule That Self-Assembles Into Cells Cargo Capsule
4. Vertex Researchers Report Three-Dimensional Atomic Structure Of JNK3 Enzyme; Report In Structure
5. Breakthrough: Scientists Create 3-D Map Of Cell Membrane Ion Pump At Near Atomic Resolution
6. Harvard Medical School Researchers Present Atomic Structure Of DNA-Replicating Enzyme Widely Used In DNA Sequencing
7. ASU researchers demonstrate new technique that improves the power of atomic force micrscopy
8. Evolvability could be a driving force in drug resistance
9. Workforce achievements celebrated at NASA Marshall Center Awards ceremony
10. Vacuum assisted deliveries are safe alternative to forceps
11. East Asian governments urged to harness market forces to improve environment, save money

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/23/2017)... and ITHACA, N.Y. , June 23, ... University, a leader in dairy research, today announced a ... to help reduce the chances that the global milk ... of this dairy project, Cornell University has become the ... the Food Supply Chain, a food safety initiative that ...
(Date:5/6/2017)... RAM Group , Singaporean based ... in biometric authentication based on a novel  ... to perform biometric authentication. These new sensors are based on ... Ram Group and its partners. This sensor will have ... and security. Ram Group is a next generation ...
(Date:4/13/2017)... UBM,s Advanced Design and Manufacturing event in ... and evolving technology through its 3D Printing and Smart ... the expo portion of the event and feature a ... on trending topics within 3D printing and smart manufacturing. ... will take place June 13-15, 2017 at the Jacob K. ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... SARASOTA, FL (PRWEB) , ... ... ... Inc. (RPS®) today announces publication of a United States multicenter, prospective clinical ... single use, disposable, point-of-care diagnostic test capable of identifying clinically significant acute ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... gene in its endogenous context, enabling overexpression experiments and avoiding the use of ... small RNA guides is transformative for performing systematic gain-of-function studies. , This ...
(Date:10/11/2017)... the Netherlands and LAGUNA HILLS, Calif. ... The Institute of Cancer Research, London ... use MMprofiler™ with SKY92, SkylineDx,s prognostic tool to risk-stratify patients ... trial known as MUK nine . The University of ... trial, which is partly funded by Myeloma UK, and ICR ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed licensing rights that give ... Liposomal Nanoparticle), a technology developed in collaboration with Children’s Hospital Los Angeles ...
Breaking Biology Technology:
Cached News: