Researchers developed a technique using single-stranded DNA to separate and sort metallic and semiconducting carbon nanotubes, enabling uniform conductivity and advancing nanoelectronic applications. The discovery in the journal Science has significant implications for developing sensitive medical diagnostic devices and mini-transistors.
Researchers at the University of Pennsylvania found that a readily available chemical called sodium dodecylbenzene sulfonate (NaDDBS) can disperse nanotubes in water with remarkable efficiency. This discovery represents an important step towards wider applications of nanotubes.
SourceUniversity of Pennsylvania·JournalNano Letters·DateJan 29, 2003
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Researchers have successfully generated intense electron beams from carbon nanotubes to produce high-quality X-rays. The technology offers advantages such as reduced heat generation, increased resolution and cost-effectiveness.
SourceUniversity of North Carolina at Chapel Hill·JournalApplied Physics Letters·DateJul 2, 2002
Researchers from the University of Pennsylvania discovered that carbon nanotubes can conduct heat exceptionally well, potentially addressing overheating issues in microchips. The discovery could lead to applications in various fields, including electric motors and aircraft components.
SourceUniversity of Pennsylvania·JournalScience·DateSep 7, 2000
Researchers at UNC-CH develop new technique to measure electronic properties of single-walled carbon nanotubes using C-13 nuclear magnetic resonance. The study finds that the mass ratios of metallic and semiconducting tubes can be controlled, enabling the production of materials with tunable structures.
SourceUniversity of North Carolina at Chapel Hill·JournalScience·DateApr 24, 2000
Researchers have reported the highest and most stable electron emission densities observed to date, desirable for flat-panel displays and microwave amplifiers. The carbon nanotubes' sharp tip and chemical robustness contribute to their superior stability and uniform emission.
SourceOffice of Naval Research·JournalApplied Physics Letters·DateOct 6, 1999
A new study reveals that carbon nanotubes are more energetic to roll across surfaces compared to sliding, defying conventional wisdom on friction reduction. Researchers discovered this phenomenon using the nanoManipulator device and attributed it to electron surface interactions.
SourceUniversity of North Carolina at Chapel Hill·JournalNature·DateJan 20, 1999
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Researchers at UB have successfully developed perfectly aligned carbon nanotubes, bringing researchers closer to developing flat panel displays with excellent viewing angles and high resolution. The technical advances made by the team will help make flat panel displays made with carbon nanotubes affordable, using glass as a substrate.
SourceUniversity at Buffalo·JournalScience·DateNov 5, 1998