Navigation Links
All wrapped up: K-State researcher's graphene cloak protects bacteria, leading to better images
Date:3/15/2011

components in their natural state.

But Berry and his team created a solution to the imaging challenge by applying graphene. The graphene acts as an impermeable cloak around the bacteria so that the cells retain water and don't shrink under the high vacuum of electron microscopes. This provides a microscopic image of the cell at its natural size.

The carbon cloaks can be wrapped around the bacteria using two methods. The first method involves putting a sheet of graphene on top of the bacteria, much like covering up with a bed sheet. The other method involves wrapping the bacteria with a graphene solution, where the graphene sheets swaddle the bacteria. In both cases the graphene sheets were functionalized with a protein to enhance binding with the bacterial cell wall.

Under the high vacuum of an electron microscope, the wrapped bacteria did not change in size for 30 minutes, giving scientists enough time to observe them. This is a direct result of the high strength and impermeability of the graphene cloak, Berry said.

Graphene's other extraordinary properties enhance the imaging resolution in microscopy. Its electron-transparency enables a clean imaging of the cells. Since graphene is a good conductor of heat and electricity, the local electronic-charging and heating is conducted off the graphene cloak, giving a clear view of the bacterial cell well. Unwrapped bacterial cells appear dark with an indistinguishable cell wall.

"Uniquely, graphene has all the properties needed to image bacteria at high resolutions," Berry said. "The project provides a very simple route to image samples in their native wet state."

The process has potential to influence future research. Scientists have always had trouble observing liquid samples under electron microscopes, but using carbon cloaks could allow them to image wet samples in a vacuum. Graphene's strong and impermeable characteristics ensure that wrapped cells can be easily
'/>"/>

Contact: Vikas Berry
vberry@k-state.edu
785-532-5519
Kansas State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. K-State research: Freshwater pollution costs US at least $4.3 billion a year
2. Researchers to use K-States BSL-3 Lab for $1 million study of fungus threatening wheat crops
3. K-State biologist collaborating with researchers in Africa on grassland sustainability, biodiversity
4. K-State researchers help Epitopix license the United States first E. coli O157 vaccine for cattle
5. K-State researchers work with university in Ghana to create biofuels from native tree seeds
6. K-State using Second Life island to help high school students learn earth science
7. K-State researcher finds 1918 flu resulted in current lineage of H1N1 swine influenza viruses
8. K-State host to workshop on rapid methods to detect microorganisms in food
9. Researchers from around the globe coming to K-State June 21 for workshop on Fusarium fungus
10. K-State plant pathologists develop online teaching modules used globally
11. K-State researcher, collaborators study virulence of pandemic H1N1 virus
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2014)... the Rim Fire was in full fury, raging swiftly ... entered the backcountry of Yosemite National Park in California,s ... park, the battle began to turn, enacting a case ... combine to fuel large, severe fires. , "When the ... where fire had been used as a management tool, ...
(Date:7/31/2014)... or fat cells, are inherently different. Each of these ... own role in metabolism. In the human body, white ... primary function is energy storage. On the other hand, ... are only found in a few places in the ... type of brown adipocytes, appear mixed with brown adipocytes ...
(Date:7/31/2014)... nuts, cashews, hazelnuts, macadamias, pecans, pine nuts, pistachios and ... British Medical Journal Open (BMJ Open) (i) and ... article looked at the effects of tree nuts ... nut consumption resulted in a significant decrease in triglycerides ... article focused on the effect of tree nuts on ...
Breaking Biology News(10 mins):The Rim Fire 1 year later: A natural experiment in fire ecology and management 2The Rim Fire 1 year later: A natural experiment in fire ecology and management 3The Rim Fire 1 year later: A natural experiment in fire ecology and management 4The Rim Fire 1 year later: A natural experiment in fire ecology and management 5Hope for the overweight 2New international tree nut council study looks at nuts, diabetes and metabolic syndrome 2
... of skin cancer is one step closer, after a ... natural substance that shows exceptional potential to specifically treat ... professor Dennis Hall said after three years of work, ... Palmerolide A. "The potency of palmerolide is exceptional ...
... -- Exposure to lead in early childhood significantly contributes ... minority and low-income children, according to researchers at Duke ... a clear dose-response pattern between lead exposure and test ... move from children at the high end to the ...
... the Smithsonian Tropical Research Institute in Panama has dramatically ... monitor the spread of chytridiomycosisone of the deadliest frog ... Batrachochytrium dendrobatidis , this disease is probably responsible ... the 1970s. During the past decade, the epidemic swept ...
Cached Biology News:Children's blood lead levels linked to lower test scores 2Catching a killer one spore at a time 2
(Date:7/31/2014)... 2014 SoundConnect , an ... is proud to announce the addition of Adobe ... Connect’s elearning tools to quickly deploy and manage ... training tools for desktop and mobile learning solutions. ... the perfect online training solution, enabling organizations to ...
(Date:7/31/2014)... 31, 2014 Boston’s Adult Stem Cell ... with innovative adult stem cell biotechnologies. Currently the ... has three additional patent applications currently under examination by ... inventions address two of the most vexing problems in ... Adult stem cells are difficult to identify; and they ...
(Date:7/30/2014)... Regulus Therapeutics Inc . (NASDAQ: ... and development of innovative medicines targeting microRNAs, today announced ... the quarter ended June 30, 2014 on Wednesday, August ... Regulus will host a conference call and ... Eastern Daylight Time to discuss its second quarter 2014 ...
(Date:7/30/2014)... W. R. Grace & Co. (NYSE: ... REVELERIS® Prep purification system , a dual-mode instrument ... researchers to perform both flash and preparative liquid ... the REVELERIS® Prep purification system, researchers can easily ... a simple touch of the screen, giving them ...
Breaking Biology Technology:SoundConnect Enhances Portfolio with Adobe Connect Learning Management System (LMS) 2The Adult Stem Cell Technology Center, LLC Launches A Marketing Campaign To License Adult Stem Cell Biotechnologies 2The Adult Stem Cell Technology Center, LLC Launches A Marketing Campaign To License Adult Stem Cell Biotechnologies 3Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 3Grace Launches New REVELERIS® Prep Purification System 2
... ... available NCBI resources BioSystems and DCODE enable researchers to quickly and effectively use these ... ... tutorials on BioSystems and DCODE. , , ,The NCBI BioSystems database provides ...
... In research published this week in PLoS Medicine ... a novel automated cluster detection tool, WHONET-SaTScan, made by ... infection clusters. After applying the software to microbiology data ... in the US across four years (2002-2006), the authors ...
... taken major step forward in the development of practical phonon ... optical lasers emit light. The development should lead to new, ... have been incorporated into countless, ubiquitous devices, a phonon laser ... yet unimaginable applications. Two separate research groups, one located ...
Cached Biology Technology:New Online Tutorials for NCBI resources BioSystems and DCODE 2New Online Tutorials for NCBI resources BioSystems and DCODE 3Tool identifies infection clusters; rate of T cell drop not helpful in decision to start treating HIV 2Tool identifies infection clusters; rate of T cell drop not helpful in decision to start treating HIV 3Tool identifies infection clusters; rate of T cell drop not helpful in decision to start treating HIV 4Quantum leap for phonon lasers 2
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Applications: Epitope mapping, Mapping protein-protein contacts, Identification of enzyme substrates/inhibitors, Identification of receptor agonists/antagonists...
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Biology Products: