News tagged with optical tweezers
Physicists prove Einstein wrong with observation of instantaneous velocity in Brownian particles
A century after Albert Einstein said we would never be able to observe the instantaneous velocity of tiny particles as they randomly shake and shimmy, so called Brownian motion, physicist Mark Raizen and his ...
May 20, 2010 |
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Micro-ear lets scientists eavesdrop on the micro-world
(PhysOrg.com) -- Acting as a microscope for sound, a new device called a micro-ear could make objects on the micro-scale audible. The device could enable scientists to listen to the sounds that cells and bacteria ...
Feb 26, 2010 |
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Mechanical forces could affect gene expression
(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.
Feb 02, 2010 |
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Small optical force can budge nanoscale objects
(PhysOrg.com) -- Engineering researchers have used a very tiny beam of light with as little as 1 milliwatt of power to move a silicon structure up to 12 nanometers.
Nov 17, 2009 |
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Tailoring the optical dipole force for use on molecules
(PhysOrg.com) -- "Scientists have been working with dipole fields for quite some time," Peter Barker tells PhysOrg.com. "However, most of the work is focused on very small particles, like atoms, or on larger particles, such a ...
Oct 29, 2009 |
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Nanotechnology gets a new light touch
(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 ...
Oct 02, 2009 |
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New Nanochemistry Technique Encases Single Molecules in Microdroplets
(PhysOrg.com) -- Inventing a useful new tool for creating chemical reactions between single molecules, scientists at the National Institute of Standards and Technology have employed microfluidics -- the manipulation ...
Sep 22, 2009 |
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Acoustic tweezers can position tiny objects
(PhysOrg.com) -- Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough ...
Nanotechnology / Nanomaterials
Aug 28, 2009 |
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Tiny robots get a grip on nanotubes
(PhysOrg.com) -- How do you handle the tiny components needed for constructing nanoscale devices? A European consortium has built two microrobotic demonstrators that can automatically pick up and install carbon nanotubes ...
Aug 17, 2009 |
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Gene transcribing machine takes halting, backsliding trip along the DNA
(PhysOrg.com) -- The body's nanomachines that read our genes don't run as smoothly as previously thought, according to a new study by University of California, Berkeley, scientists.
Jul 30, 2009 |
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Integrated optical trap holds particles for on-chip analysis
(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 ...
Jun 30, 2009 |
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Liquid lens creates tiny flexible laser on a chip
(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. ...
May 11, 2009 |
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The Power of Light: Moving Macroscopic Amounts of Matter
(PhysOrg.com) -- Since 1970, scientists have been working with “optical tweezers” - lasers that move microscopic amounts of matter using forces originating from the light matter interaction. Now, for the first ...
Jan 29, 2009 |
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