Science

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Nanoparticles give up forensic secrets

A group of researchers from Switzerland has thrown light on the precise mechanisms responsible for the impressive ability of nanoparticles to detect fingermarks left at crime scenes.

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Nanoparticles Accumulate Quickly in Wetland Sediment: Aquatic food chains might be harmed by molecules "piggybacking" on carbon nanoparticles

A Duke University team has found that nanoparticles called single-walled carbon nanotubes accumulate quickly in the bottom sediments of an experimental wetland setting, an action they say could indirectly damage the aquatic food chain.

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Nanotechnology researcher Lee Ferguson stands amid a collection of simulated wetlands called mescosms at Duke University. Each wetland-in-a-box is used to run the experiment under varying conditions.

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Platinum meets its match in quantum dots from coal: Rice University's cheap hybrid outperforms rare metal as fuel-cell catalyst

Graphene quantum dots created at Rice University grab onto graphene platelets like barnacles attach themselves to the hull of a boat. But these dots enhance the properties of the mothership, making them better than platinum catalysts for certain reactions within fuel cells.

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Rice University scientists combined graphene quantum dots, graphene oxide, nitrogen and boron into a catalyst capable of replacing platinum in fuel cells at a fraction of the cost.

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Ad-REIC vaccine: A magic bullet for cancer treatment

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A "Magic Bullet" for Cancer Gene Therapy

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New Topical Hemostatic Agent: Neutral Self-Assembling Peptide Hydrogel

Self-assembling peptide is characterized by a stable β-sheet structure and known to undergo self-assembly into nanofibers that could further form a hydrogel. Self-assembling peptide hydrogels have already been employed for tissue engineering, drug delivery systems, and wound healing.　In addition, self-assembling peptide hydrogels are effective as topical hemostatic agents. However, their low pH raises the possibility of harmful effects on living tissues.

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Hemostasis in a rat liver laceration model. Incision was made on the left hepatic lobe. Bleeding decreased immediately following application of the 1.5% (w/v) SPG-178 hydrogel to the bleeding surface. Because SPG-178 hydrogel is transparent, the bleeding surface was visible.

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Cold Atom Laboratory Chills Atoms to New Lows

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Artist's concept of an atom chip for use by NASA's Cold Atom Laboratory (CAL) aboard the International Space Station. CAL will use lasers to cool atoms to ultracold temperatures.

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Rosetta to Deploy Lander on November 12

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Image depicts the primary landing site on comet 67P/Churyumov-Gerasimenko chosen for the European Space Agency's Rosetta mission.

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Production of Anticorrosive Chromate Nanocoatings in Iran

Researchers from University of Tehran proposed biocompatible anticorrosive coatings with nanometric thickness to increase corrosion resistance in metallic structures in various fields, including petroleum, gas, petrochemical, automobile fabrication and marine industries.

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Rosetta to deploy lander on 12 November

The European Space Agency’s Rosetta mission will deploy its lander, Philae, to the surface of Comet 67P/Churyumov–Gerasimenko on 12 November.

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World's smallest reference material is big plus for nanotechnology

If it's true that good things come in small packages, then the National Institute of Standards and Technology (NIST) can now make anyone working with nanoparticles very happy. NIST recently issued Reference Material (RM) 8027, the smallest known reference material ever created for validating measurements of these man-made, ultrafine particles between 1 and 100 nanometers (billionths of a meter) in size.

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A structural model of a typical silicon nanocrystal (yellow) was stabilized within an organic shell of cyclohexane (blue).