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:4/15/2014)... (KNAW) has announced the names of five internationally renowned ... million US dollars prize money in total). The laureates ... science. , This year marks the 50th anniversary of ... Erwin Chargaff in 1964. , KNAW juries have ... , Christopher M. Dobson, John Humphrey Plummer ...
(Date:4/15/2014)... 2050, deforestation could cause temperatures in the Congo ... would intensify warming caused by greenhouse gases by ... the University of Leuven, Belgium. , Explosive population ... destruction of tropical rainforests in Central Africa. A ... examined how these practices will affect longer-term temperatures ...
(Date:4/15/2014)... cuttlefish, squid and octopus has uncovered details of ... they may help in investigating populations of their ... 10 new parasite species− dicyemid mesozoans −, which ... and octopus). They are the very first ... , "Although dicyemid parasites have been studied ...
Breaking Biology News(10 mins):Five scientists awarded prestigious Heineken Prizes 2Study: Deforestation could intensify climate change in Congo Basin by half 2Bizarre parasite may provide cuttlefish clues 2
... This press release is available in Spanish . ... radiotherapy to the lymph nodes located behind the breast bone ... breast conserving surgery, a radiation oncologist will tell delegates at ... March). Women at a high risk of developing breast cancer ...
... may shed light on how climate over millions of years ... that will discuss the findings and recommendations of the National ... Several members of the committee that wrote the report will ... next 10 to 20 years and answer audience questions. ...
... (LF) and the Nanyang Technological University (NTU) today announced ... to poor communities in the region with fresh funds, ... programme. The Lien Foundation is injecting a ... (Endeavour). Started in 2006, the Endeavour seeks to improve ...
Cached Biology News:Specific lymph node radiotherapy is well-tolerated after surgery in early breast cancer patients 2NTU and Lien Foundation launch second second wave of Environmental Endeavor 2NTU and Lien Foundation launch second second wave of Environmental Endeavor 3
(Date:1/15/2014)... January 15, 2014 This webinar ... on nonclinical and clinical safety assessment in biosimilars. ... guide a path for biosimilar drug development, however ... of biosimilarity with regards to quality, safety and ... of biosimilar drug development and registration, development strategies ...
(Date:1/15/2014)... NC (PRWEB) January 15, 2014 ... an enhancement to its Online Web Portal for Life ... now have the ability to specify the subject matter ... nearly 50 life science sub-domains. This will help reduce ... and scientific fields, and decrease the likelihood of error. ...
(Date:1/14/2014)... Doylestown, PA (PRWEB) January 14, 2014 ... – 11 p.m. , Location: Warrington Country Club, 1360 ... Hepatitis B Foundation, the only national nonprofit organization solely ... improving the quality of life for those affected worldwide, ... 11 at Warrington Country Club in Warrington, Pa. ...
(Date:1/14/2014)... York, NY (PRWEB) January 14, 2014 ... initiated coverage of Alliqua, Inc. (OTCQB: ALQA). Alliqua ... and marketing proprietary products to serve the wound ... , In late 2012, Alliqua was restructured ... launched the company’s new strategy to become a ...
Breaking Biology Technology:Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2DTS Improves Efficiency for Life Science Document Translations 2Hepatitis B Foundation to Host Annual Crystal Ball Gala 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... (OTCBB: GNLK, "the Company," or "GeneLink"), a leading consumer ... year ended December 31, 2010. Financial Highlights: ... 2009 to $4,997,367 in 2010; Annual net sales ... 2009; Operating losses in 2010 decreased to $2,169,898, a ...
... SEATTLE, April 4, 2011 Omeros Corporation (NASDAQ: ... developing and commercializing products focused on inflammation, bleeding and ... Gregory A. Demopulos, M.D., chairman and chief executive officer, ... Healthcare Conference taking place in New York City this ...
... proteins, polymers, minerals, and engineered materials will be published ... Nature Materials . The discovery by two Penn State ... the structure of materials, which the researchers say greatly ... desired properties. The research is expected to have broad ...
Cached Biology Technology:GeneLink Reports 2010 Results 2Search for advanced materials aided by discovery of hidden symmetries in nature 2Search for advanced materials aided by discovery of hidden symmetries in nature 3
... Combining linear motor and ballscrew ... pre-engineered Cartesian solutions that include ... management, and motors., , ... Pass through high-flex cabling for ...
UGT1A6 (D-20)...
... T Squareds patented high efficiency dynamic valve ... With the most compact, lightweight package in ... use in portable air and gas applications., ... high efficiency. , Includes DC Motor. ...
... designed for moving loads quickly and accurately. ... output while limiting overall size. The P5S-P ... ball bearings guided on two rails., ... provide energy absorption and controlled deceleration , ...
Biology Products: