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Wavelength in Biological News

New Report Just Published: World Solid-State, Fiber, Gas and Dye Lasers Market Report

... Select Solid-state Lasers and their Output wavelength II-18 Table 6: Worldwide Solid-State Lasers ... II-23 Select Types of Gas Lasers and Their wavelength II-23 Carbon Dioxide (CO2) Lasers II-23 ... II-26 Select Excimer Lasers and Emission wavelength II-26 History II-26 Applications II-26 ...

Researchers create new class of fluorescent dyes to detect reactive oxygen species in vivo

... reactive oxygen species and by their emission wavelength from 560 to 830 nanometers. Fluorescing at ... the ability of hydro-Cy3, which has an emission wavelength of 560 nanometers, to detect reactive oxygen ... the in vivo tests because of its higher emission wavelength of 760 nanometers. LPS-treated mice showed ...

Argonne scientists peer into heart of compound that may detect chemical, biological weapons

... Kanatzidis said. "The disturbance changes the wavelength of the emitted light and creates two beams: the ... and the second harmonic a beam with half the wavelength and double the frequency." This ... by the best current material. This two-for-one wavelength boost is paired with greater transparency, so the ...

Distinguishing single cells with nothing but light

... IRAM. "Conceptually it's pretty straightforwardyou shine a specified wavelength of light onto your sample and you get back a large number of peaks spread ... does not harm or inhibit normal cell functionality. This is because the wavelength of the light can be precisely calibrated to minimize absorption by the ...

Blue light destroys antibiotic-resistant staph infection

... as MRSA, were virtually eradicated in the laboratory by exposing them to a wavelength of blue light, in a process called photo-irradiation that is described in ... infections. "It is inspiring that an inexpensive naturally visible wavelength of light can eradicate two common strains of MRSA. Developing strategies ...

'Strained' quantum dots show new optical properties

... of zinc and selenium on top of a cadmium and tellurium core increases the wavelength of light produced as fluorescence by the quantum dots, Nie's team shows. As the core becomes smaller, the shift in the fluorescence wavelength produced by the zinc-containing layers becomes larger. Strain-tuned ...

Predatory bacterial swarm uses rippling motion to reach prey

... is directed toward prey. The UI team also showed that the ripple wavelength is adaptable and dependent of how much prey is available. At high prey ... ripples with shorter wavelengths. As prey density decreases, the ripple wavelength gets longer. Eventually, when there is no more prey, the rippling behavior ...

Checking people at airports -- with terahertz radiation

... time determined the spectral responsivities of two THz detectors in the wavelength range from 50 m to 600 m with the aid of cavity radiators. In order to ... for all filter combinations used was accurately determined in the wavelength range from 0.8 m to 1700 m. Due to the calculable radiation of the cavity ...

The photonic beetle

... A human hair is about 100 microns thick. Green light which has a wavelength of about 500 to 550 nanometers, or billionths of a meter cannot penetrate ... a different direction. So each piece reflects a slightly different wavelength or shade of green. Each piece is too small to be seen individually by ...

Restoring sight, advances in fertility treatments and better visibility for pilots at FIO

... When light strikes a metallic array of tiny openings, smaller than the wavelength of the light itself, interesting entities known as plasmons may be ... on a pond surface, plasmons travel in the plane of the metal but with a wavelength smaller, sometimes considerably smaller, than the original light. ...

All-in-1 nanoparticle: A Swiss Army knife for nanomedicine

... for example in solar cells. Quantum dots are fluorescent balls of semiconductor material just a few nanometers across, a small fraction of the wavelength of visible light (a nanometer is 1-millionth of a centimeter). At this tiny scale, quantum dots' unique optical properties cause them to emit light ...

What scientists know about jewel beetle shimmer

... to form the curved structure of its external skeleton. Research shows that when the pitch of the helix of cholesteric liquid crystals is close to the wavelength of visible light, they reflect light with specific wavelengths, leading to brilliant metallic colors. "It's stunning how similar the two things ...

Public lecture at UC Riverside to discuss origin and fate of universe

... using ground based telescopes, as well as space observatories such as the Hubble Space Telescope. He uses redshift, a change in light's visible wavelength caused by the expansion of the universe, to measure distances to galaxies. Mobasher obtained his Ph.D. in observational cosmology from the ...

Photoselective film proves effective for controlling height in potted gardenia plants

... under low tunnels. In both experiments, two types of cover materials were used: a photoselective polyethylene (P-PE), filtering light within the wavelength range 600 to 750 nm and a common polyethylene film (C-PE) routinely used in greenhouse practice. The experiments were carried out in a commercial ...

New aerosol observing technique turns gray skies to blue

... Scanning Polarimeter (RSP), an aircraft-based version of APS, is the first such instrument to measure polarized light at one particularly important wavelength (2.2 micrometers). "The 2.2 micrometer channel is critical because it provides the only passive method we have to retrieve accurate and detailed ...

New 'pollution radar' developed to provide unprecedented picture of urban smog

... by the University of Leicester, in collaboration with partners at Surrey Satellite Technology Ltd. These instruments will operate in the visible wavelength region to enable virtually real-time, 3D maps of atmospheric gases such as nitrogen dioxide to be constructed with five-minute time resolution. This ...

Termite insecticide a potent greenhouse gas

... emitted from about 1 million vehicles. About 60 percent of the world's sulfuryl fluoride use occurs in California. Sulfuryl fluoride blocks a wavelength of heat that otherwise could easily escape the Earth, the scientists said. Carbon dioxide blocks a different wavelength, trapping heat near the ...

Princeton researchers discover new type of laser

... 2007, Franz, Gmachl and others had reported that a quantum cascade laser they had built unexpectedly emitted a second laser beam of slightly smaller wavelength than the main one. Further studies by Menzel and others revealed that the second beam could not be explained by any existing theory of quantum ...

MIT nanotubes sniff out cancer agents in living cells

... with DNA, which binds to DNA-damaging agents present in the cell. That interaction between the DNA and DNA disruptor changes the intensity and/or wavelength of the fluorescent light emitted by the nanotube. The agents produce different signatures that can be used to identify them. "We can differentiate ...

AGU journal highlights: Nov. 11, 2008

... paper 10.1029/2008GL034811, 2008; http://dx.doi.org/10.1029/2008GL034811 4. Surface waves effects in deep ocean Long ocean waves (with wavelength greater than 1 meter (3.3 feet) and period longer than about 1 second) have long been known to excite acoustic waves at twice their frequency that ...

ACS PressPac -- Sept. 17, 2008

... Near-Infrared Spectroscopy (DR-NIR). It involves shooting a beam of infrared light into a sample to determine its chemical composition based on the wavelength of light emitted. The method quickly and accurately determined the chemical content of the samples without any prior sample preparation, the ...

New technique sees into tissue at greater depth, resolution

... nanospheres are relatively safer." "Also, given the wide range of nanoparticle shapes and sizes, coupled with the ability to 'tune" the optical wavelength of the OCT, we can customize our approach to many different target types," Izatt said. Skala plans to expand the use of this approach in animal ...

Remote technology sees through ice, snow and hot air to monitor power plants

... will use thermal infrared imagery to determine the temperature of the discharged hot water and passive microwave remote sensingwhich has a longer wavelength than infraredto determine the thickness of the insulating snow and ice layer and to estimate its insulating capacity. Salvaggio, Arsenovic and ...

Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more

... by a tiny array of infrared quantum cascade lasers on a chip smaller than a dime. The chip holds an array of 32 lasers, each emitting a distinct wavelength and together covering a broad spectral range in the infrared region. The researchers new paper demonstrates that their device could identify common ...

Popcorn-ball design doubles efficiency of dye-sensitized solar cells

... solar cell is the size of the grains. Smaller grains have bigger surface area per volume, and thus absorb more rays. But bigger clumps, closer to the wavelength of visible light, cause light to ricochet within the thin light-absorbing surface so it has a higher chance of being absorbed. "You want to have a ...

Researchers decode genetics of rare photosynthetic bacterium

... the genome of the cyanobacterium, Acaryochloris marina, which through its production of chlorophyll d can absorb red edge, near infrared long wavelength light -- light that is invisible to the naked eye. Acaryochloris marina has a massive genome (8.3 million base pairs) and is among the largest of 55 ...

Researchers decode genetics of rare photosynthetic bacteria

... the genome of the cyanobacterium, Acaryochloris marina, which through its production of chlorophyll d can absorb red edge, near infrared long wavelength light -- light that is invisible to the naked eye. Acaryochloris marina has a massive genome (8.3 million base pairs) and is among the largest of 55 ...

New technology sharpens X-ray vision

... Up until now these images have only been possible using sophisticated crystal optical elements. Crystal optics, however, only work for a single x-ray wavelength and thus are highly inefficient. Our new technique uses novel x-ray optical components, in the form of nanostructured gratings, that permit the use ...

New technique captures chemical reactions in a single living cell at unprecedented resolution

... optical signals of cytochrome c, giving the researchers an easier target. Gold nanoparticles were chosen because they have a plasmon resonance wavelength ranging from 530 to 580 nanometers, corresponding to the absorption peak of cytochrome c. "When the absorption peak of the biomolecule overlaps ...

New insights into how lasers cut flesh

... cauterize the cuts that they make, infrared lasers are used frequently for surgery in areas where there is a lot of bleeding. Shorter wavelength lasers in the near-infrared, visible and ultraviolet range cut by an entirely different mechanism. They create a series of micro-explosions that ...

Story tips from the Department of Energy's Oak Ridge National Laboratory, October 2007

... can be made while protecting people who have to handle the dead. The bag would contain titanium dioxide and, using 300- to 400-nanometer wavelength light, could be decontaminated in place. The bag would also contain a port from which a vacuum could be drawn to significantly slow down the ...

Researchers set new record for brightness of quantum dots

... engineering and corresponding author of a paper published in the August issue of the journal Nature Nanotechnology. We tune them to the specific wavelength of a laser used to stimulate the quantum dots, which couples the energy more efficiently and increases the brightness. A quantum dot is a tiny piece ...

Making mice with enhanced color vision

... "knock-in" mouse that has one copy of its medium wavelength receptor replaced with the human long wavelength receptor, so both were expressed in the retina. ... were set to give equal activation of their middle wavelength receptor. However, mice with both the human ...

New light microscope sharpens scientists' focus

... of conventional optical microscopes, which are inherently limited by the wavelength of light. With these microscopes, objects separated by less than 200 ... optical microscope can be identified with precision far greater than the wavelength of light was once thought to allow. And in 1994, in work that was also ...

Rice scientists unveil 'nanoegg'

... just like waves in the ocean. Light also travels in waves, and when the wavelength of incoming light matches the wavelength of the plasmon, the amplitude of their sloshing gets bigger and bigger, ...

Color perception is not in the eye of the beholder: It's in the brain

... reddish yellow nor greenish yellow. Everyone selected nearly the same wavelength of yellow, showing an obvious consensus over what color they perceived ... the contacts, they all began to select a pure yellow that was a different wavelength than they had before wearing the contacts. "Over time, we were able to ...

Medical molecules designed to respond to visible light that can penetrate tissue

... through, then you have seen light in the therapeutic window ?that magic wavelength that is not absorbed or reflected away by tissue. Scientists believe that they can use light at that wavelength to signal manmade molecules to release drugs at disease sites in the body. ...

Devising Nano Vision for an Optical Microscope

... and measure features smaller than 10 nanometers—a tiny fraction of the wavelength of visible light. In a preliminary test of the embryonic technique, NIST scientists used violet light with a wavelength of 436 nanometers to image features as small as 40 nanometers, about five ...

Applied scientists create wrinkled 'skin' on polymers

... of research from various directions," says Vaziri. "At the moment we are looking at the effect of ion beam energy and have been able to reduce the wavelength of the wrinkles to 50 nanometers. Manipulation at such a small scale makes this method even more attractive. We are also building multifunctional ...
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(Date:7/31/2014)... brown and beige adipocytes, or fat cells, are inherently ... and each plays its own role in metabolism. In ... the most prevalent. Its primary function is energy storage. ... to generate heat but are only found in a ... which represent a special type of brown adipocytes, appear ...
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Breaking Biology News(10 mins):Hope for the overweight 2NXT-ID's Next Generation Biometric Smart Wallet Featured on NewsWatch Consumer Show on the History Channel and FYI Network Today, July 31st 2NXT-ID's Next Generation Biometric Smart Wallet Featured on NewsWatch Consumer Show on the History Channel and FYI Network Today, July 31st 3New international tree nut council study looks at nuts, diabetes and metabolic syndrome 2
(Date:8/1/2014)... AAGL, a premiere professional educational society ... to announce a joint venture with several other ... which strongly recommends every hospital teaching endoscopic surgery ... lab for training in an effort to improve ... Endoscopy is the use of small tubular instruments ...
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Breaking Medicine News(10 mins):Health News:AAGL Announces It Has Joined With Other Medical Societies to Encourage Hospitals Teaching Endoscopic Surgery to Establish Simulator Labs for Training 2Health News:SF Custom Chiropractic Celebrates National Relaxation Day and the Benefits of Massage Therapy for the Month of August 2Health News:Save 25% on the Proposition 65 Handbook - 2013 Edition Through August 31 2Health News:October Events: Regional Conference on Mesothelioma in Chicago 2Health News:October Events: Regional Conference on Mesothelioma in Chicago 3Health News:Snoring: Bad for Relationships, Bad for Health 2Health News:Snoring: Bad for Relationships, Bad for Health 3
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