Navigation Links
Researchers enlist DNA to bring carbon nanotubes' promise closer to reality
Date:7/8/2009

A team of researchers from DuPont and Lehigh University has reported a breakthrough in the quest to produce carbon nanotubes (CNTs) that are suitable for use in electronics, medicine and other applications.

In an article published in the July 9 issue of Nature, the group says it has developed a DNA-based method that sorts and separates specific types of CNTs from a mixture.

CNTs are long, narrow cylinders of graphite with a broad range of electronic, thermal and structural properties that vary according to the tubes' shape and structure. This versatility gives CNTs great promise in electronics, lasers, sensors and biomedicine, and as strengthening elements in composite materials.

Current methods of producing CNTs yield mixtures of tubes with different diameters and symmetry, or "chirality." Before the tubes can be used, however, they must be disentangled from a mixture and "purified" into separate species of CNTs of the same electronic type.

"A systematic method of purifying every single-chirality species of the same electronic type from a synthetic mixture of single-walled nanotubes is highly desirable," the DuPont-Lehigh group wrote in Nature, "but the task has proven to be insurmountable to date."

The Nature article is titled "DNA sequence motifs for structure-specific recognition and separation of carbon nanotubes." Its authors are Ming Zheng, Xiaomin Tu, Anand Jagota and Suresh Manohar. Zheng and Tu are scientists with DuPont Central Research and Development. Jagota is a professor of chemical engineering at Lehigh. Manohar is a graduate student in chemical engineering at Lehigh.

In 2003, a team of scientists from DuPont, MIT and the University of Illinois at Urbana-Champaign developed a new method of separating metallic CNTs from semiconducting CNTs using single-stranded DNA and anion-exchange chromatography. The scientists reported their discovery in Science. The team was led by Zh
'/>"/>

Contact: Kurt Pfitzer
kap4@lehigh.edu
610-758-3017
Lehigh University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Researchers improve ability to write and store information on electronic devices
2. Long-awaited international ethical guidelines for biobank researchers
3. CU researchers shed light on light-emitting nanodevice
4. Stevens researchers provide new information about mass spectrometry
5. Researchers measure carbon nanotube interaction
6. Researchers underscore limitations of genetic ancestry tests
7. ASU researchers improve memory devices using nanotech
8. UD researchers race ahead with latest spintronics achievement
9. Researchers outline structure of largest nonvirus particle ever crystallized
10. Ames Laboratory researchers solve fuel-cell membrane structure conundrum
11. Researchers use magnetism to target cells to animal arteries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/29/2015)... HILL, N.C. , May 29, 2015 /PRNewswire/ ... medical affairs function into roles involving clinical development, ... As its responsibilities have grown, Medical Affairs has ... function as a global group. And while its ... find it challenging to identify strong performance metrics ...
(Date:5/29/2015)... In recent years, the biopharmaceutical industry has ... that can generate valuable insights. Despite this, the inherent ... have caused the biopharmaceutical sector to embrace Big Data ... According to a recent study by benchmarking firm, Best ... Data team or function in place; however, these organizations ...
(Date:5/29/2015)... BerGenBio AS ("BerGenBio" or the ... abstract on the latest data on BGB324, the Company,s ... tyrosine kinase, and BGB10C9, an Axl function-blocking monoclonal antibody ... conjunction with the 2015 American Society of Clinical Oncology ... May 29 - June 2, 2015. The ...
(Date:5/29/2015)... May 29, 2015 GeneWEAVE, ... organisms (MDROs), announced that initial feasibility data supporting ... detection and susceptibility testing from positive blood cultures ... May 31, 2015 in New Orleans, LA. The ... molecular diagnostics that can quickly detect bacteria and ...
Breaking Biology Technology:Creating an Effective Pharmaceutical Medical Affairs Group with Global Capabilities 2New Study Details Current & Future Big Data Trends Across Medical Affairs Functions 2BGB324 and BGB10C9 Show Promise in Models of Pancreatic Cancer 2BGB324 and BGB10C9 Show Promise in Models of Pancreatic Cancer 3Data Highlighting GeneWEAVE’s Smarticles™ Technology to be Presented at the 115th General Meeting of the American Society for Microbiology (asm2015) 2Data Highlighting GeneWEAVE’s Smarticles™ Technology to be Presented at the 115th General Meeting of the American Society for Microbiology (asm2015) 3
... , ... integral to the SPEX FLUOROMAX -P or as an accessory ... information on various systems of chemical and biochemical interest, by revealing data ... <P,>This Application Note describes an example, using the SPEX ...
... , ... DataMax is the software used to display data from all SPEX ... a contour map. A contour map displays multifiles or 3-D data, and ... meteorological plot of barometric pressures. X values are plotted on the horizontal ...
... Introduction , ... 1 O 2 , is of considerable interest in environmental applications, ... been directed towards understanding the biological effects of 1 O 2 ... a dye, oxygen, and light. <P,>An understanding of the mechanisms that produce ...
Cached Biology Technology:Phosphorescence lifetime measured using the SPEX phosphorimeter 2Obtaining a contour map from multifiles or 3D data in DataMax 2Obtaining a contour map from multifiles or 3D data in DataMax 3Singlet Oxygen measurement 2
(Date:5/29/2015)... , May 28, 2015 Research ... addition of the "Facial Recognition Market by ... - Global Forecast to 2020" report to ... have seen facial recognition technology become more efficient ... to gain traction and investment from the commercial ...
(Date:5/28/2015)... 28, 2015 Industry analyst firm n-tech ... report titled "Markets for Self-Healing Materials: 2015-2022." According to ... and vascular systems, biomaterials, relevant shape memory materials ... $2.7 billion by 2020. The report ... of smart materials. Other recent n-tech reports have included ...
(Date:5/27/2015)... 27, 2015   Codonics (codonics.com), ... and image documentation solutions and Omnicell ... automation solutions, is pleased to announce their ... Safe Label System® (SLS), an award-winning FDA ... the Omnicell Anesthesia Workstation, helps prevent medication ...
Breaking Biology News(10 mins):Global advanced Facial Recognition Market Expected to Grow From $2.77 Billion in 2015 to $6.19 Billion in 2020, at an Estimated CAGR of 17.4% 2The Market for Self-Healing Materials to Reach $2.7 Billion by 2020 Says New n-tech Research Study 2The Market for Self-Healing Materials to Reach $2.7 Billion by 2020 Says New n-tech Research Study 3Codonics and Omnicell Expand Partnership 2Codonics and Omnicell Expand Partnership 3Codonics and Omnicell Expand Partnership 4
... MADISON, WI, SEPTEMBER 21, 2009 A new ... , documents the history, science, and applications of tall ... increasing role in protecting soil and water and enhancing ... from around the world who address an array of ...
... after plucking the fossilized tooth of a new human ... team of scientists today (Thursday, Oct. 1) announced their ... Ardipithecus ramidus , which they say revolutionizes our understanding ... female skeleton, nicknamed Ardi, is 4.4 million years old, ...
... African bees were accidentally released in Brazil in 1957. ... at the Smithsonian Tropical Research Institute, began a 17-year ... to native bees than changes in the weather and ... , Scientists feared that dangerous swarms of Africanized bees ...
Cached Biology News:Tall fescue's future in agriculture 2Ardi displaces Lucy as oldest hominid skeleton 2Ardi displaces Lucy as oldest hominid skeleton 3Ardi displaces Lucy as oldest hominid skeleton 4Ardi displaces Lucy as oldest hominid skeleton 5Killer bees may increase food supplies for native bees 2
...
Request Info...
... Pichia Protocols is the first all-inclusive ... the Pichia pastoris Expression System. Methods developed ... provided as detailed, step-by-step protocols. This book ... expression vector, through strain construction and analysis, ...
...
Biology Products: