The design, development and manufacturing of revolutionary products such as the automobile, airplane and computer owe a great deal of their success to the large-scale material testing systems (MTS) that have provided engineers and designers with a fundamental understanding of the mechanical behavior of various materials and structures.
In the world of nanotechnology, however, where the mechanical characterization of materials and structures takes place on the scale of atoms and molecules, the existing material testing systems are useless. The development of a universal nanoscale material testing system (n-MTS), which could fit in existing electron microscopes (instruments that can magnify images approximately one million times) and possess the resolution and accuracy needed to mechanically test nanoscale objects, has been a major challenge within the scientific community.
Now researchers at Northwestern University have designed and built the first complete micromachine that makes possible the investigation of nanomechanics phenomena in real time. The findings are published online this week by the Proceedings of the National Academy of Sciences (PNAS). The machine, which can fit in tiny spaces as required by in situ transmission electron microscopy (TEM), successfully characterized the mechanical properties of nanowires and carbon nanotubes.
Megan Fellman | EurekAlert!
Scientists have a new way to gauge the growth of nanowires
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For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.
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Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
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At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
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