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Accoustic tweezers can grip microparticles

Researchers have discovered that ultrasonic waves can be used to grab several microparticles at a time, effectively creating a pair of invisible 'ultrasonic hands' that can move tiny objects, such as cells, under a microscope.

Posted: May 15th, 2014

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Nanoparticle ink for rapid diagnosis

The incorporation of nanoparticles of gold or silver into conventional ink, the same ink as in our ballpoints or pens, is an advanced solution in identifying molecules in fields such as medical diagnosis, biology, the environment, safety, etc.

Posted: May 15th, 2014

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A new way to identify the atomic origin of molecular valence electrons

Due to the delocalization of molecular orbitals valence shell spectroscopy does not allow distinction between individual atoms. Here, the authors show that for photoionization the difference in mass - and hence recoil momentum - between atoms in a diatomic molecule allows site selective emission to be observed.

Posted: May 15th, 2014

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DNA double helix measurements

Researchers have determined the structure of DNA from measurements on a single molecule using atomic force microscopy, and found significant variations in the well-known double helix.

Posted: May 14th, 2014

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Ultrafast laser technique developed to observe electron action

Physicists have developed a new ultrafast light source for observing electron motion in molecules - made up of nuclei and electrons - at the point before the nuclei start to move. By being able to observe what actually happens, scientists can begin to understand how an electron interacts with other electrons, which may help improve the efficiency of solar cells.

Posted: May 13th, 2014

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