News tagged with optical tweezers
We need to talk: How cells communicate to activate notch
During formation of multi-cellular organisms, cells need to talk to each other to make critical decisions as to what kind of cell to become, as well as when and where to become that cell type. The Notch signaling system allows ...
May 31, 2012 |
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Light touch keeps a grip on delicate nanoparticles
(Phys.org) -- Using a refined technique for trapping and manipulating nanoparticles, researchers at the National Institute of Standards and Technology (NIST) have extended the trapped particles' useful life ...
Nanotechnology / Bio & Medicine
May 03, 2012 |
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Tailored optical material from DNA: Nano spiral staircases modify light
In the human body genetic information is encoded in double-stranded deoxyribonucleic acid building blocks, the so-called DNA. Using artificial DNA molecules, an international team of scientists headed by the ...
Nanotechnology / Nanomaterials
Mar 14, 2012 |
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Optical nanoantennas enable efficient multipurpose particle manipulation
University of Illinois researchers have shown that by tuning the properties of laser light illuminating arrays of metal nanoantennas, these nano-scale structures allow for dexterous optical tweezing as well ...
Jan 12, 2012 |
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Manipulating single molecules to unravel secrets of protein folding
Physicists at the Technische Universitaet Muenchen (TUM) are opening a new window into the life of biological cells, using a technique that lets them grab the ends of a single protein molecule and pull, making ...
Oct 27, 2011 |
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'Next-generation' optical tweezers trap tightly without overheating (w/ video)
(PhysOrg.com) -- Engineers at Harvard have created a device that may make it easier to isolate and study tiny particles such as viruses.
Sep 26, 2011 |
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Previously unaccounted mechanism proposed for cell phone radiation damage
(PhysOrg.com) -- The long running debate on whether cell phones are capable of damaging human tissue and causing health problems received new fuel from a paper published at arXiv by theoretical biologist Bill Bruno from Los Alamos National Laborato ...
Apr 29, 2011 |
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Want to silence a gene? Pull here
(PhysOrg.com) -- Simply stretching DNA can silence a gene, scientists at the UA have discovered. The finding could point to a previously unknown gene control mechanism.
Mar 21, 2011 |
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Optical tweezers software now available for the iPad
Optics researchers from the Universities of Glasgow and Bristol have developed an iPad application for accurate, easy and intuitive use of optical tweezers.
Mar 04, 2011 |
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Dynamic systems in living cells break the rules
There is considerable interest in understanding transport and information pathways in living cells. It is crucial for both the transport of, for example, medicine into cells, the regulation of cell life processes ...
Jan 25, 2011 |
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Controlled heating of gold nanoparticles
Tiny gold particles are good for transferring heat and could be a promising tool for creating localized heating in, for example, a living cell. In new experiments, German researchers at the Niels Bohr Institute ...
Nanotechnology / Nanomaterials
Jan 17, 2011 |
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Scientists isolate, hold, photograph individual Rubidium 85 atom
(PhysOrg.com) -- In a major physics breakthrough, University of Otago scientists have developed a technique to consistently isolate and capture a fast-moving neutral atom - and have also seen and photographed ...
Oct 01, 2010 |
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Tractor beams come to life
Tractor beams, energy rays that can move objects, are a science fiction mainstay. But now they are becoming a reality -- at least for moving very tiny objects.
Sep 08, 2010 |
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A pinch of light: Laser 'tweezers' for medicine, communications and harvesting energy
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.
Jul 06, 2010 |
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Intracellular express -- why transport protein molecules have brakes
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. ...
May 21, 2010 |
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