Navigation Links
Buckling up to turn
Date:7/8/2013

ention of buckling to avoid failure in structures.

'Controlled failure'

"The bacteria have evolved to exploit this structural failure as a strategy," says lead author Roman Stocker, an associate professor in MIT's Department of Civil and Environmental Engineering, whose research focuses on the ecology and biophysics of ocean microbes. "E. coli and other multiflagellated microbes have to synthesize and maintain all those flagella. But marine bacteria are able to achieve the same functionality with just one flagellum by turning physics on its head. It's controlled failure."

Stocker's co-authors on the paper are graduate student Kwangmin Son and postdoc Jeffrey Guasto. Their research was funded by the National Science Foundation.

Understanding how marine microbes use controlled failure to change swimming direction is useful in its own right: Despite their small size, marine microorganisms are at the base of the ocean food chain, and can cause red tides, decimate coral reefs or clean up oil spills. But this work also may have future applications in soft robotics or bioengineered systems for drug delivery.

"A single actuator, the flagellum, enables both propulsion and turning in these bacteria," Guasto says. "This is a well-known principle in robotics called 'underactuation,' but it is rarely considered at the micrometer scale."

Stocker attributes the insight that buckling is the mechanism responsible for the flick to the "engineering bias" stemming from the team's knowledge of mechanics: "When our high-speed imaging showed that flicks only occurred during forward motion, we intuited that this implied compression, and thus the potential for buckling." But the key to discovering the mechanism was in the high spatial and temporal resolution of the imaging technology, he says.

Bacterial three-point turn

The researchers studied the swimming patterns of the bacterium Vibrio alginolyti
'/>"/>

Contact: Denise Brehm
brehm@MIT.EDU
617-253-8069
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2 3 4

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... into a chili pepper causes a burning spiciness that ... exploring the chili pepper,s effect are using their findings ... of pain, which can be caused by inflammation or ... which is being tested in clinical trials, in ACS, ... and colleagues explain that decades ago, scientists had pegged ...
(Date:8/20/2014)... who are poor experience higher cortisol levels in pregnancy ... the stress hormone, putting them at greater risk ... new research from the University of Colorado Denver. , ... Journal of Human Biology , is the first to ... the socioeconomic status of their mothers during pregnancy. , ...
(Date:8/20/2014)... State University researchers have developed methods for electronically manipulating ... electrical signals moths use to control those muscles. The ... moths, or "biobots," for use in emergency response. , ... we can control the movement of moths for use ... Dr. Alper Bozkurt, an assistant professor of electrical and ...
Breaking Biology News(10 mins):CU Denver researcher shows economic disparities impact infant health 2Research paves way for development of cyborg moth 'biobots' 2
... Autologous (self-donated) mononuclear cells derived from bone marrow (BMMNCs) ... transplanted into patients with diabetes who are suffering from ... a complication of diabetes. The team of researchers in ... results in a recent issue of Cell Transplantation ...
... Jellyfish are increasing in the majority of the world,s ... jellyfish abundance by University of British Columbia researchers. ... the journal Hydrobiologia , UBC scientists examined data ... world,s 66 Large Marine Ecosystems. They found increasing jellyfish ...
... to punish others who lie, cheat, steal or violate other ... to benefit personally, is a distinctly human behavior. There is ... this "I punish you because you harmed him" fashion. Although ... institutionalized in human legal systems and economists have identified it ...
Cached Biology News:Autologous bone marrow-derived mononuclear cell transplants can reduce diabetic amputations 2Jellyfish on the rise: UBC study 2Crime and punishment: The neurobiological roots of modern justice 2Crime and punishment: The neurobiological roots of modern justice 3Crime and punishment: The neurobiological roots of modern justice 4Crime and punishment: The neurobiological roots of modern justice 5
(Date:8/20/2014)... 20, 2014 GraphDB™ 6.0 ... including improvements to the enterprise replication cluster, faster ... Lucene, SOLR and Elasticsearch. This release happens to ... performance triplestore – GraphDB™ was formerly known as ... the only mature enterprise resilient RDF triplestore will ...
(Date:8/19/2014)... Md. (PRWEB) August 19, 2014 ... liquid chromatography systems, Prominence-i and Nexera-i, adding to ... systems. Combining excellent functionality, an intuitive operating environment, ... and a more efficient workflow for conventional to ... feature innovative, intuitive and intelligent design so users ...
(Date:8/19/2014)... Aug. 19, 2014 A Geisinger researcher on ... for a Centers for Disease Control and Prevention (CDC) ... public health concern. Joseph Boscarino , ... of a team of researchers nominated for the Centers ... Science Award for Data Methods and Study Design. ...
(Date:8/19/2014)... Research and Markets  has announced the addition of the ... report to their offering. This report ... in US$ Thousands. The report provides separate comprehensive analytics for ... , Asia-Pacific , and Rest of ... 2012 through 2020. Market data and analytics are derived from ...
Breaking Biology Technology:Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 3Geisinger investigator nominated for federal award 2Geisinger investigator nominated for federal award 3Global Solid Oxide Fuel Cells (SOFCs) - Strategic Business Report 2014 2
... ... to cap the well that is leaking vast quantities of oil into ... cleaning up the oil that is slowly creeping ashore and affecting sensitive ... end, however, significant obstacles prevent current methods of bioremediation from being effective. ...
... June 3 Anthera Pharmaceuticals, Inc. (Nasdaq: ANTH ), a ... autoimmune disorders, today announced Colin Hislop , M.D. has been promoted ... James E. Pennington , M.D., who will continue to serve as ... , ...
... June 3 Alexandria Real Estate Equities, Inc. (NYSE: ... Science Industry®, today announced that the Cambridge Planning Board has ... known as the Binney Street Project.  This development, with its ... East Cambridge, is positioned to be the epicenter of Cambridge,s ...
Cached Biology Technology:Evolugate Launches Bioremediation Project To Mitigate The Gulf Oil Spill 2Evolugate Launches Bioremediation Project To Mitigate The Gulf Oil Spill 3Anthera Pharmaceuticals Promotes Colin Hislop, M.D., to Chief Medical Officer 2Anthera Pharmaceuticals Promotes Colin Hislop, M.D., to Chief Medical Officer 3Anthera Pharmaceuticals Promotes Colin Hislop, M.D., to Chief Medical Officer 4Alexandria Real Estate Equities, Inc. Receives Final Approval From City of Cambridge to Develop Its East Cambridge State-of-the-Art Life Science Community 2Alexandria Real Estate Equities, Inc. Receives Final Approval From City of Cambridge to Develop Its East Cambridge State-of-the-Art Life Science Community 3
... CLS number is a new ... match Cornings product number. If ... order under the old Sigma-Aldrich ... service for assistance. ID clarifier: ...
ID clarifier: With ethidium bromide (50 μg/ml)...
... Pre-tested for optimal colony ... the growth of anchorage-dependent ... methylcellulose colony-forming assays of ... cells. Not suitable for ...
... simultaneous dual parameter assay for mitochondrial ... activity. Active caspases are detected by ... which are cell-permeable, non-cytotoxic and bind ... the cells. At the same time ...
Biology Products: