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Showing results 11-21 of 66 for 'Chemistry'

  • gold-nanoparticles-tn
    Tiny “Flasks” Speed Up Chemical Reactions

    Dr. Rafael Klajn and his team found that when spherical nanoparticles self-assembled into a cluster, empty spaces formed between them, as between oranges packed in a case. They put molecules in these “Flasks” for chemical reactions – a process that turned out to be highly efficient, with wide-ranging potential applications such as drug delivery.

  • Sweet Smell

    Scientists from the Weizmann Institute and the University of California at Berkeley discovered that the molecular structure of a substance can help predict how we will perceive its smell.  

  • bacterial-growth-rates-tn
    Science Tips, September 2015

    Three updates from the Weizmann Institute: discovering how the tiny, beautiful sea sapphire changes color – and even becomes invisible; using light to get nanoparticles to self-assemble could lead to rewritable paper, contaminant removal, and drug delivery; measuring how fast bacteria grow sheds new light on how our microbiome is tied to our health.

  • longhorn-crazy-ants-tn
    Ants in the Lead

    As the old song says, ""oops, there goes another rubber tree plant."" People have always been in awe of ants' ability to work together to get the seemingly impossible done – but how, exactly, do they do it? Now we know, thanks to a Weizmann team that created a physics-based model showing how groups of ants cooperate to carry large pieces of food to the nest.

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    Crystallization Made Crystal Clear

    Crystallization is a well-observed process; we all watch it every winter when ice crystals form on our windows. But no one had ever seen the process on a molecular level: the point at which the liquid changes states. Until now, that is. Prof. Ronny Neumann and colleagues developed a way to watch crystallization happen, verifying long-held theories.

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  • black-hole-tn
    Science Tips, August 2014

    Three updates from the labs of the Weizmann Institute: a new technique identifies the exact DNA sequences involved in regulating the fate of blood stem cells; theorizing that tiny black holes ate their way to becoming massive quasars; nanocubes can self-assemble into beautiful, complex structures.

  • green-rust_comp2d598adac497647cb66dff00005fc039_51ae2276-c747-4186-b604-18a0ef1acbe7
    A Rusty Green Early Ocean?

    How were the Earth's solid deposits of iron ore created? While researching possible conditions on Mars, Dr. Itay Halevy discovered “green rust“ - rare today, but apparently common billions of years ago. While this would have been just one of several means of iron deposition, green rust seems to have delivered a large proportion of iron to our early ocean.

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