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Latest Optical tweezers Stories

Researchers Detect Smallest Force Ever Measured
2014-06-27 03:21:50

By Lynn Yarris, Berkeley Lab What is believed to be the smallest force ever measured has been detected by researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley. Using a combination of lasers and a unique optical trapping system that provides a cloud of ultracold atoms, the researchers measured a force of approximately 42 yoctonewtons. A yoctonewton is one septillionth of a newton and there are approximately 3 x 1023...

2013-10-29 11:06:53

Jet measures 20 to 150 nanometers in diameter — just a few hundred water molecules across Fluid jets are all around us: from inkjet printing, to the “Old Faithful” geyser in Yellowstone National Park, to cosmological jets several thousand light years long. A Northwestern University researcher with collaborators from Cambridge University, Oxford University, and Centro Nacional de Biotecnología have recently verified the classical Landau-Squire theory in the tiniest submerged jet....

DNA Inserted 'Gently' Into Living Cells Using New High-tech Laser Method
2013-08-08 09:51:43

The Optical Society Technique offers greater-than-ever control of essential gene therapy and genetic engineering method The applications of gene therapy and genetic engineering are broad: everything from pet fish that glow red to increased crop yields worldwide to cures for many of the diseases that plague humankind. But realizing them always starts with solving the same basic scientific question -- how to "transfect" a cell by inserting foreign DNA into it. Many methods already exist...

Toolbox For Nanoparticle Manipulation Expanded With New Microfluidic Method
2013-06-06 14:03:40

University of Illinois at Urbana-Champaign Researchers at the University of Illinois at Urbana-Champaign have developed a new flow-based method for manipulating and confining single particles in free solution, a process that will help address current challenges faced by nanoscientists and engineers. “This method is a first-of-its-kind tool for manipulation and trapping of small nanoparticles in solution,” explained Charles M. Schroeder, an assistant professor in the...

New Twist On Microscopic Manipulation From World's Smallest Wrench
2012-12-03 16:34:48

Optical Society of America [ Watch The Video ] New tool for controlling particles promises to advance biological research, healthcare, and more Harnessing laser light's ability to gently push and pull microscopic particles, researchers have created the fiber-optic equivalent of the world's smallest wrench. This virtual tool can precisely twist and turn the tiniest of particles, from living cells and DNA to microscopic motors and dynamos used in biological and physical research....

Lung Mucus Gel Prevents Nanoparticles From Getting Through
2012-10-23 10:54:10

Joint press release by the Saarland University and the Helmholtz Centre for Infection Research Mucus coats our airways' internal surfaces. The viscous gel humidifies the lungs and prevents viruses and other small particles like diesel soot from entering the body unchecked. Previously unclear was the extent to which such nanoparticles are able to move through the lungs' mucus. Here, the research evidence was contradictory. Scientists could not explain why, in inhaled medication development,...

Optical Vortex Beams Placed On Chip
2012-10-19 13:46:28

Lee Rannals for redOrbit.com — Your Universe Online Scientists have demonstrated integrated arrays of emitters of "optical vortex beams" onto a silicon chip for the first time. Light in these beams, as reported to the journal Science, does not propagate in straight rays, but instead travels in a spiral fashion in a hollow conical beam shape. The beams look like a vortex or cyclone, with its light rays "twisted" either left-handed or right-handed. The researchers wrote that...

Low-powered Nanotweezers May Benefit Cellular-level Studies By Demonstrating New Capabilities
2012-09-17 17:08:19

Using ultra-low input power densities, researchers at the University of Illinois at Urbana-Champaign have demonstrated for the first time how low-power “optical nanotweezers” can be used to trap, manipulate, and probe nanoparticles, including fragile biological samples. “We already know that plasmonic nanoantennas enhance local fields by up to several orders of magnitude, and thus, previously showed that we can use these structures with a regular CW laser source to make...

Tiny Creatures Captured With Ultrasound Using Acoustic Tweezers
2012-06-29 11:44:26

A device about the size of a dime can manipulate living materials such as blood cells and entire small organisms, using sound waves, according to a team of bioengineers and biochemists from Penn State. The device, called acoustic tweezers, is the first technology capable of touchlessly trapping and manipulating Caenorhabditis elegans (C. elegans), a one millimeter long roundworm that is an important model system for studying diseases and development in humans. Acoustic tweezers are also...


Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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