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Search results for “Nanotechnology”

1,000+ results for "Nanotechnology"

Safety of nanoparticles in food crops is still unclear

A recent literature review analyzed nearly 100 scientific articles on the effects of nanoparticles on edible plants. The study found that nanoparticle uptake and build-up vary depending on plant type, nanoparticle size, and chemical composition, highlighting a need for further research in nanoecotoxicology.

SourceAmerican Chemical Society·JournalJournal of Agricultural and Food Chemistry·DateJun 1, 2011

Exotic behavior when mechanical devices reach the nanoscale

A groundbreaking study by Prof. Adrian Bachtold's team has discovered nonlinear damping behavior in nanoscale mechanical devices, which facilitates amplification of signals and dramatic improvements in sensitivity. The findings have profound consequences for the physics of nanoelectromechanical resonators and will enable significant ad...

Limit to nanotechnology mass-production?

A leading nanotechnology scientist proposes a 3nm diameter threshold for mass-produced structures, citing unpredictability in bottom-up manufacturing. This challenge raises concerns about the billions invested in nanotechnology research and development.

SourceIOP Publishing·JournalNanotechnology·DateApr 20, 2011

The world's smallest wedding rings

Researchers at Goethe University Frankfurt have created two interlocking rings of DNA, measuring 18 nanometers in size, which are suitable as components of molecular machines. The catenan structure is freely pivotable and can be used to arrange and study proteins or other molecules that are too small for direct manipulation.

SourceGoethe University Frankfurt·JournalNano Letters·DateApr 11, 2011

Quartz crystal microbalances enable new microscale analytic technique

A new chemical analysis technique developed by NIST uses quartz crystal microbalances to test the purity of small material samples. This technique measures reaction energy needed to decompose or oxidize a sample with heat, offering a more sensitive approach than conventional methods, enabling analysis of nanoparticles and thin films.

Out-sniffing bomb-sniffing dogs

A Tel Aviv University scientist has developed a small, portable sensor that can detect multiple kinds of explosives with unprecedented reliability and efficiency. The sensor, which uses nanotechnology advances, is more sensitive and reliable than any sniffer dog and can detect explosives at a distance.

SourceAmerican Friends of Tel Aviv University·JournalAngewandte Chemie·DateNov 10, 2010

Colonic navigation

Researchers have developed a method to control drug delivery using nanoparticles, which can improve the therapeutic effects of colon cancer treatments. The new approach targets the lower intestine, overcoming existing barriers such as stomach acidity and rapid clearance.

SourceInderscience Publishers·JournalInternational Journal of Nanotechnology·DateNov 4, 2010