Navigation Links
UNC study on properties of carbon nanotubes, water could have wide-ranging implications
Date:10/2/2008

CHAPEL HILL A fresh discovery about the way water behaves inside carbon nanotubes could have implications in fields ranging from the function of ultra-tiny high-tech devices to scientists' understanding of biological processes, according to researchers from the University of North Carolina at Chapel Hill.

The findings, published in the Oct. 3, 2008, issue of the journal Science, relate to a property of so-called "nano-confined" water specifically, whether hollow carbon nanotubes take in the liquid easily or reluctantly, depending on their temperature.

As well as shedding light on the characteristics of human-made nanomaterials, researchers note that such properties are relevant to the workings of biological structures and phenomena which also function at nano-scales.

The team of scientists, led by Yue Wu, Ph.D., professor of physics in the UNC College of Arts and Sciences, examined carbon nanotubes measuring just 1.4 nanometers in diameter (one nanometer is a billionth of a meter). The seamless cylinders were made from rolled up graphene sheets, the exfoliated layer of graphite.

"Normally, graphene is hydrophobic, or 'water hating' it repels water in the same way that drops of dew will roll off a lotus leaf," said Wu. "But we found that in the extremely limited space inside these tubes, the structure of water changes, and that it's possible to change the relationship between the graphene and the liquid to hydrophilic or 'water-liking'."

The UNC team did this by making the tubes colder. Using nuclear magnetic resonance similar to the technology used in advanced medical MRI scanners they found that at about room temperature (22 degrees centigrade), the interiors of carbon nanotubes take in water only reluctantly.

However, when the tubes were cooled to 8 degrees, water easily went inside. Wu said this shows that it is possible for water in nano-confined regions either human-made or natural to tak
'/>"/>

Contact: Patric Lane
patric_lane@unc.edu
919-962-8596
University of North Carolina at Chapel Hill
Source:Eurekalert

Page: 1 2

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... screening outcomes of approximately 3 million infants, a team ... the University of Massachusetts Medical School, have shown that ... successfully implemented across public health newborn screening programs. Data ... 20 issue of the Journal of the American ... of SCID in newborns is higher than previously thought ...
(Date:8/20/2014)... that acral melanomas the rare type of skin cancer ... distinct from other more common types of skin cancer, according ... Pigment Cell & Melanoma Research . , Acral melanoma ... the feet, nail-beds and other hairless parts of the skin. ... by UV damage from the sun. , The team, from ...
(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 ...
Breaking Biology News(10 mins):Newborn screening expansion offers early diagnosis and treatment to infants with SCID 2Newborn screening expansion offers early diagnosis and treatment to infants with SCID 3Scientists learn more about rare skin cancer that killed Bob Marley 2
... after the world,s first ultrasonic detection device invented ... Virginia Tech Carilion Research Institute scientists have ... have long suspected: ultrasound applied to the periphery, such ... to the brain. And that,s just the ...
... ship is at anchor for longer periods algae, shells and ... economic losses of billions of Dollar. Biological growth on the ... the hull below the waterline which has a braking effect ... basified bio layer, the consumption of fuel can increase by ...
... a simple "drag-and-drop" computer interface and DNA self-assembly ... drug development that could drastically reduce the time ... work supported by a National Science Foundation (NSF) ... NanoLabs of Reston, Va., recently developed and began ...
Cached Biology News:Neuroscientists prove ultrasound can be tweaked to stimulate different sensations 2Neuroscientists prove ultrasound can be tweaked to stimulate different sensations 3Keeping ship hulls free of marine organisms 2Drag-and-drop DNA 2Drag-and-drop DNA 3Drag-and-drop DNA 4
(Date:8/19/2014)... BURNIE, Md. , Aug. 19, 2014 ... clinical research industry, recently announced the formation of the ... pleased to announce the addition of Dr. William ... Photo - http://photos.prnewswire.com/prnh/20140818/136957 The ... across a variety of therapeutic areas and set strategic ...
(Date:8/19/2014)... , Aug. 19, 2014   Synthetic Biologics, ... developing novel anti-infective biologic and drug programs targeting ... announced today that its novel C. difficile ... 54 th Interscience Conference on Antimicrobial Agents ... Washington D.C. Synthetic Biologics, ...
(Date:8/19/2014)... August 19, 2014 Sales Horizons, a ... its online sales skills training course to ... , MedTech clinical staff spend the majority of their ... standalone medical center, or physician practice – providing support ... why stop there? Sales Horizons believes clinical staff are ...
(Date:8/18/2014)... new therapy developed by researchers at the University ... and Columbia University Medical Center (CUMC) may help ... treatment. , The researchers demonstrated in a ... selectively inhibit blood vessel re-narrowing and simultaneously promote ... balloon catheter to open narrowed or blocked arteries. ...
Breaking Biology Technology:CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 2CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 3Synthetic 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 4Sales Horizons Launches a New Online Sales Training Course for MedTech Clinical Staff to Develop Their Sales Skills 2Sales Horizons Launches a New Online Sales Training Course for MedTech Clinical Staff to Develop Their Sales Skills 3Selective therapy may improve artery repair after interventional cardiovascular procedures 2Selective therapy may improve artery repair after interventional cardiovascular procedures 3
... Kathleen A. Maguire-Zeiss, Brandon K. Harv e y, Rita E. Giuliano and,H ... , Introduction , ... number of factors, including , method ... transfection of mammalian cells has proven to yield ...
... Menu B. Leddy, Biotechnology Research Department,Orange County ... , Introduction ... of bacterial species from membrane , ... of bacterial cells from membrane biofilms cannot be ...
... , Introduction , ... use as primers , or probes in genetic ... traditionally been done by slab gel electrophoresis or HPLC, but these , ... not provide desired quantitative precision or automation. Capillary ...
Cached Biology Technology:Commercial Plasmid Preparation Methods Yield DNA With Different Transfection Capabilities 2Commercial Plasmid Preparation Methods Yield DNA With Different Transfection Capabilities 3Commercial Plasmid Preparation Methods Yield DNA With Different Transfection Capabilities 4Commercial Plasmid Preparation Methods Yield DNA With Different Transfection Capabilities 5Commercial Plasmid Preparation Methods Yield DNA With Different Transfection Capabilities 6Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A 2Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A 3Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A 4Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A 5Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A 6Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A 7Oligonucleotide Purity Analysis by Capillary Electrophoresis 2Oligonucleotide Purity Analysis by Capillary Electrophoresis 3
... This DuoSet ELISA Development kit contains the ... sandwich ELISAs to measure natural and recombinant ... and serum. Each kit contains sufficient materials ... plates, provided that the following conditions are ...
Blimp-1 (H-150)...
Mouse Galectin-1 Affinity Purified Polyclonal Ab...
PSGL-1 (215)...
Biology Products: