Navigation Links
Atomic force microscopy reveals liquids adjust viscosity when confined, shaken
Date:4/30/2008

Getting ketchup out of the bottle isnt always easy. However, shaking the bottle before trying to pour allows the thick, gooey ketchup to flow more freely because it becomes more fluid when agitated. The opposite is not typically true a liquid such as water does not become a gel when shaken.

However, new research published in the March 14 issue of the journal Physical Review Letters shows that when fluids like water and silicon oil are confined to a nanometer-sized space, they behave more like ketchup or toothpaste. Then, if these confined liquids are shaken, they become fluidic and exhibit the same structural and mechanical properties as those in thicker layers.

The study the first to use an atomic force microscope to measure the viscosity of confined fluids revealed that these liquids can respond and modify their viscosity based on environmental changes.

Knowing this could be very important, said Elisa Riedo, an assistant professor in the Georgia Tech School of Physics. If a lubricant used in a piece of machinery becomes thick and gelatinous when squeezed between two solid surfaces, serious problems could occur. However, if the machine vibrated, the liquid could become fluidized.

With funding from the National Science Foundation and the U.S. Department of Energy, Riedo and graduate student Tai-De Li used atomic force microscopy (AFM) to measure the behavior of thin and thick layers of liquids while they were vibrated. A nanometer-size spherical silicon tip was used to approach a mica surface immersed in water or silicon oil, while small lateral oscillations were applied to the cantilever support.

Some researchers have measured the force it takes to squeeze out a fluid, but we took a different approach, explained Riedo. We are the first group to use AFM to study the viscosity of confined fluids from direct high-resolution lateral force measurements.

The normal and lateral forces acting on the tip we
'/>"/>

Contact: Abby Vogel
avogel@gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Attraction at the atomic level
2. IMPAC Medical Systems and Aperio to Develop Integrated Solution for Anatomic Pathology
3. Maryland Science Center Unveils Anatomical Exhibition, Body Worlds 2, on Saturday, February 2
4. Heavier hydrogen on the atomic scale reduces friction
5. International Atomic Energy Agency and National Foundation for Cancer Research Launch Major Initiative to Improve Cancer Prevention and Treatments in Developing Countries
6. Australia Chooses Cardiac Science to Equip Its Defence Force
7. Ohio Task Force Begins Mission of Creating a New 21st Century Industry
8. Kosan Restructures Workforce to Focus Resources on Lead Clinical Programs
9. DMetrix and the Armed Forces Radiobiology Research Institute Announce Cooperative Research and Development Agreement
10. Major EPA enforcement effort on nano-pesticide applauded
11. Nastech Pharmaceutical Company Implements Additional Workforce Reduction as Part of Previously Announced Corporate Restructuring
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Atomic force microscopy reveals liquids adjust viscosity when confined, shaken
(Date:8/19/2014)... Aug. 19, 2014 Research and Markets  has announced ... Global Strategic Business Report" report to their offering. ... Culture Supplies in US$ Thousands by the following Product Segments: Media, ... for the US, Canada , Japan ... , and Latin America . Annual estimates and ...
(Date:8/19/2014)... 19, 2014 Research and Markets  has announced ... - Global Strategic Business Report" report to their offering. ... Solid Oxide Fuel Cells (SOFCs) in US$ Thousands. The report ... , Europe , Asia-Pacific ... are provided for the period 2012 through 2020. Market data ...
(Date:8/19/2014)... Research and Markets ... "Spectroscopy Equipment and Accessories - Global Strategic ... This report analyzes the ... in US$ Thousands by the following Product ... NMR-EPR Spectrometers, Near Infrared (NIR) Spectrometers, IR ...
(Date:8/19/2014)... Md. , Aug. 19, 2014   ... biotechnology company developing novel anti-infective biologic and drug ... and diseases, announced today that its novel ... at the 54 th Interscience Conference on ... Washington D.C. ...
Breaking Biology Technology:Global Cell and Tissue Culture Supplies - Strategic Business Report 2014 2Global Solid Oxide Fuel Cells (SOFCs) - Strategic Business Report 2014 2Global Spectroscopy Equipment and Accessories - Strategic Business Report 2014 2Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 2Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 4
... Calif., Oct. 12, 2011 Life Technologies ... announced the Applied Biosystems QuantStudio™ 12K Flex ... that enables cost-effective and efficient interrogation of hundreds of ... run. The growing demand of biomarker screening ...
... The National Science Foundation (NSF) has selected a University ... class of NSF Innovation Corps awards. The I-Corps Awards ... and connects scientists to entrepreneurial resources. "The idea ... intellectual property from the lab into the commercial world," ...
... 11, 2011 ThermoGenesis Corp. (NASDAQ: KOOL ... that process and store adult stem cells, said today ... (AXP) which is used to concentrate stem cells from ... & Drug Administration (SFDA) in China. This represents the ...
Cached Biology Technology:Life Technologies Announces Flagship PCR Instrument that Enables Cost-Effective, High-Throughput Screening Applications 2Life Technologies Announces Flagship PCR Instrument that Enables Cost-Effective, High-Throughput Screening Applications 3Life Technologies Announces Flagship PCR Instrument that Enables Cost-Effective, High-Throughput Screening Applications 4Penn team wins entrepreneurial innovation award 2ThermoGenesis Announces Acceptance of AXP® Submission by Regulatory Body in China 2ThermoGenesis Announces Acceptance of AXP® Submission by Regulatory Body in China 3
(Date:8/20/2014)... scientists have discovered that acral melanomas the rare type ... are genetically distinct from other more common types of ... in the journal Pigment Cell & Melanoma Research . ... hands, soles of the feet, nail-beds and other hairless parts ... it,s not caused by UV damage from the sun. , ...
(Date:8/20/2014)... plastic bags could one day be made out of ... are now reporting. The novel process they developed and ... its agricultural and plastic waste problems, appear in the ... S. Bayer and colleagues at the Italian Institute of ... In 2012, its production reached 288 million tons worldwide, ...
(Date:8/20/2014)... 1 (PS1) absorbs light and its energy is ... to biomass. Photovoltaic devices, mostly build from silicon ... electricity. One approach for the development of cheaper ... with the isolated membrane protein complexes of photosynthesis. ... stable PS1 from thermophilic cyanobacteria that live in ...
Breaking Biology News(10 mins):Scientists learn more about rare skin cancer that killed Bob Marley 2A semi-artificial leaf faster than 'natural' photosynthesis 2
... Journal of Experimental Biology are pleased to announce ... is the winner of this year,s JEB Outstanding Paper ... in The Journal of Experimental Biology at ... of an outstanding young scientist to an exceptional research ...
... A new and insidious environmental threat has been ... Queen,s and York universities. Along with scientists ... documented biological damage caused by declining levels of ... the phenomenon "aquatic osteoporosis," Queen,s PhD candidate Adam ...
... Cameroon, and other partners have collaborated to create a ... endangered great ape: the Cross River gorilla. The ... area with Nigeria,s Cross River National Park, safeguarding an ... populationalong with other rare species. Trans-boundary protected areas allow ...
Cached Biology News:French scientist wins the Journal of Experimental Biology Outstanding Paper Prize 2French scientist wins the Journal of Experimental Biology Outstanding Paper Prize 3Queen's University biologists find new environmental threat in North American lakes 2New national park protects world's rarest gorilla 2New national park protects world's rarest gorilla 3
4',6-Diamidino-2-phenylindole dihydrochloride...
...
Normal Bovine Serum; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin lev...
12(S)-HETE-d8 is used as an internal standard for the quantification of 12(S)-HETE by stable isotope dilution mass spectrometry....
Biology Products: