Star Trek fans will remember "tractor beams," lasers that allowed the Starship Enterprise to trap and move objects. Tel Aviv University is now turning this science fiction into science fact -- on a nano scale.
General Physics
Jul 6, 2010
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Every single one of our cells contains so-called motor proteins that transport important substances from one location to another. However, very little is known about how exactly these transport processes occur. German biophysicists ...
Cell & Microbiology
May 21, 2010
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(PhysOrg.com) -- University of Michigan researchers have shown that tension on DNA molecules can affect gene expression---the process at the heart of biological function that tells a cell what to do.
General Physics
Feb 2, 2010
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(PhysOrg.com) -- Building the super-fast computers of the future has just become much easier thanks to an advance by Australian researchers that lets them grab hold of tiny electronics components and probe their inner structure ...
Nanophysics
Oct 2, 2009
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(PhysOrg.com) -- Friction limits the speed and efficiency of macroscopic engines. Is this also true for nanomachines? A Dresden research team used laser tweezers to measure the friction between a single motor protein molecule ...
Biotechnology
Aug 14, 2009
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(PhysOrg.com) -- A new type of optical particle trap can be used to manipulate bacteria, viruses and other particles on a chip as part of an integrated optofluidic platform. The optical trap is the latest innovation from ...
Nanophysics
Jun 30, 2009
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Researchers at the University of Gothenburg, Sweden, have developed a new method to study single cells while exposing them to controlled environmental changes. The unique method, where a set of laser tweezers move the cell ...
General Physics
May 15, 2009
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(PhysOrg.com) -- Like tiny Jedi knights, tunable fluidic micro lenses can focus and direct light at will to count cells, evaluate molecules or create on-chip optical tweezers, according to a team of Penn State engineers. ...
General Physics
May 11, 2009
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In a paper published in the Applied Physics Letters journal, a group of scientists demonstrated that under optical excitation, a polariton condensate can simultaneously occupy two closely spaced energy levels, which results ...
Condensed Matter
Jul 9, 2024
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During illness, the stiffness or viscosity of cells can change. Tom Evers demonstrated this by measuring such properties of human immune cells for the first time. "The stiffness of certain cells could be a way to make a diagnosis," ...
Cell & Microbiology
May 16, 2024
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