Science

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Hubble Spotted a Supernova in NGC 5806

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This image is produced from three exposures in visible and infrared light, observed by Hubble’s Advanced Camera for Surveys.

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NASA's GRAIL Moon Twins Begin Extended Mission Science

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Artist concept of GRAIL mission. Grail will fly twin spacecraft in tandem orbits around the moon to measure its gravity field in unprecedented detail.

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Record-Breaking Stellar Explosion Helps Understand Far-Off Galaxy

Nature hath no fury like a dying star – and astronomers couldn’t be happier…

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Iranian Scientists Introduce Nanocomposite for Deactivation of E.Coli Bacterium

Iranian researchers at Islamic Azad University successfully introduced ZnO/SnO2 nanocomposite catalyst with molar ratio of 2:1 with higher performance than single films of ZnO and SnO2 by using drop method to deactivate E.Coli bacterium.

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Researchers Develop New, Less Expensive Nanolithography Technique

Parallel dip-pen nanolithography is used to generate micrometer-scale patterns with protein and lipid dyes on both a glass surface and spore layer. Spore- and colloid-based tips are used to facilitate parallel patterning.

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This technique uses no electronic components to bring the cantilevers into contact with the substrate surface.

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Scientists Question Quake Map Prediction Methodology

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Tokyo University professor Robert Geller points to a poster of a soon-to-be-published document he co-authored asserting characteristic earthquake models developed in the past should be considered dead and buried.

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A breakthrough in Nylon characterization from Malvern Instruments

A novel gel permeation chromatography (GPC) method for characterizing Nylon, developed by researchers at Malvern Instruments, significantly reduces the cost of analysis while simultaneously improving safety, when compared with conventional techniques. The new method uses formic acid as a solvent for Nylon, in place of the traditional choice of hexafluoroisopropanol (HFIPA), a relatively expensive, aggressively corrosive solvent with poor health and safety characteristics. First presented at a recent webinar by Dr Wei Sen Wong, his breakthrough is expected to generate significant industrial interest. Revisit it at www.malvern.com/nylon_characterization

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Nylon molecular model

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Iranian, American Researchers Produce Nano-Cellulose Drug Carriers

Nano-cellulose drug carriers were produced by Iranian researchers from Islamic Azad University in association with their colleagues from Northern Carolina University of the US in a bid to fight various types of illness-causing bacteria such as the ones that are resistant to antiseptics.

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'Nanoresonators' might improve cell phone performance

Resonant nanoelectromechanical systems (NEMS) have the potential to have significant impact in mass sensing, signal processing and field detection applications if the challenges associated with processing, material and geometric variability can be mitigated. The research presented here details a breakthrough in the design and development of resonant NEMS aimed at addressing these challenges. Specifically, the work details the fabrication, characterization and tuning of dual-gate silicon nanoelectromechanical resonators, which are transduced electrostatically and realized with close to 100% yield. These devices are fabricated on a silicon-on-insulator (SOI) substrate using only top-down microfabrication techniques and can be easily integrated with SOI-CMOS transistors, enabling the development of fully integrated CMOS-NEMS with highly-tunable nonlinear frequency response characteristics.

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This image from a scanning electron microscope shows a tiny mechanical device, an electrostatically actuated nanoresonator, that might ease congestion over the airwaves to improve the performance of cell phones and other portable devices.

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NASA's Jupiter-Bound Juno Changes its Orbit

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This artist's concept depicts NASA's Juno spacecraft during a burn of its main engine.