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First 3D nanoscale optical cavities from metamaterials

The world's smallest three-dimensional optical cavities with the potential to generate the world's most intense nanolaser beams have been created. In addition to nanolasers, these unique optical cavities with their extraordinary electromagnetic properties should be applicable to a broad range of other technologies, including LEDs, optical sensing, nonlinear optics, quantum optics and photonic integrated circuits.

Posted: Jun 27th, 2012

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Magnet helps target transplanted iron-loaded cells to key areas of heart

Optimal stem cell therapy delivery to damaged areas of the heart after myocardial infarction has been hampered by inefficient homing of cells to the damaged site. However, using rat models, researchers in France have used a magnet to guide cells loaded with iron oxide nanoparticles to key sites, enhancing the myocardial retention of intravascularly delivered endothelial progenitor cells.

Posted: Jun 26th, 2012

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Structurally flexible silicene integrated with Si wafers

As the Si counterpart of graphene, silicene is an atom-thick, ultimately thin, two-dimensional crystal of silicon. A team of researchers at the Japan Advanced Institute of Science and Technology has succeeded in preparing silicene on Si wafers via a ceramic zirconium diboride buffer layer, paving the way for an integration of silicene with existing Si-based technologies that intrinsically face limits with top-down approaches.

Posted: Jun 26th, 2012

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Speeding up bone growth by manipulating stem cells with nanoparticles

Scientists report that surfaces coated with bionanoparticles could greatly accelerate the early phases of bone growth. Their coatings, based in part on genetically modified Tobacco mosaic virus, reduced the amount of time it took to convert stem cells into bone nodules - from two weeks to just two days.

Posted: Jun 25th, 2012

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