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Home > News > Tags > fluorescence
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Stories about: fluorescence |
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Experts at the Rice University say that imperfect carbon nanotubes are the most likely to exhibit dips in brightness when viewed by external observers. Perfect CNT displays are the brightest, a trait that could be very useful in applications such as advanced sensors.
Length and imperfections were found to be the tw... |
31 January 2012
17:11 GMT |
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University of California in San Diego (UCSD) investigators announce the creation of a living neon sign that is powered up by millions of bacterial cells. Fluorescent proteins attached to the cells' biological clocks allow them to blink in unison, just like LED or light bulbs would in a street ad billboard.
The ... |
20 December 2011
06:31 GMT |
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A system designed to signal the presence of chemicals such as pathogens, explosives, disease-related biomarkers or toxins through a visual glow has been developed by researchers at the Massachusetts Institute of Technology (MIT), in Cambridge.
The instrument has a variety of applications in numerous fields of resea... |
14 December 2011
14:01 GMT |
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Experts at the American space agency have recently revealed an interesting, high-detail map depicting the fluorescence produced by our planet's landmass-based plants. The optical emissions come from plants, and are a byproduct of a natural phenomenon called photosynthesis.Through it, plants convert carbon dioxid... |
7 June 2011
07:39 GMT |
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A group of investigators from the United States announces the development of a new method for boosting the near-infrared fluorescence level of single-walled carbon nanotube, that only involves adding a little bit of ozone to the mix. Just tiny batches of the compound allow for entire groups of carbon nanotubes to be ... |
3 December 2010
09:55 GMT |
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Whenever brain surgeons perform an operation, they rely on data obtained through various medical imaging methods to determine the best course of action. However, in some instances, the resolution of the available data leaves a lot to be desired, as some tumors are not readily visible on scans. In a bid to improve sur... |
30 April 2010
06:53 GMT |
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State-of-the-art in live cell fluorescent imaging is a method for tracking the intricate activities taking place inside living cells, and its results are so clear, that they can set the foundation for new types of treatments for a variety of diseases. But the method could further be enhanced via the addition of new c... |
26 March 2010
03:25 GMT |
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Scientists at the University of California in San Diego (UCSD), and the Moores UCSD Cancer Center, announce the development of a new type of fluorescent probe. The structure is capable of affixing itself to cancer tumors specifically, evidencing them under certain lighting conditions. The new work was constructed on ... |
17 February 2010
06:40 GMT |
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Our cells' ability to move ions through their membranes and to only allow for a certain type of ions either in or out is arguably one of the most important set of traits it has. In charge of letting various chemicals through are structures inside the membrane known as ion channels, which display a property calle... |
27 November 2009
01:51 GMT |
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Detecting extremely small molecules that have no fluorescence is very difficult to accomplish, especially if you don't know what you're looking for. Scientists at the Harvard University have recently managed to break this limitation, when a team led by expert X. Sunney Xie has created a new microscopic tech... |
23 October 2009
04:12 GMT |
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Over the past couple of years, experts have successfully used an innovative, new imaging technique called L.I.F.E. to probe the Antarctic underground for signs of life. Their quests have been successful, and the new technology has been proven to function very accurately. Now, taking that research one step further, sc... |
2 October 2009
05:52 GMT |
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Experts from the Monash Immunology and Stem Cell Laboratories have recently managed to bring the goal of creating fully functional, mature red blood cells from stem cells a bit closer. They designed a line of human embryonic stem cells (hESC) to become fluorescent only when it is differentiated into RBCs, and then wa... |
24 August 2009
10:51 GMT |
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Researchers at the Helmholtz Zentrum München – German Research Center for Environmental Health have taken another step in turning science-fiction into reality, when they have recently announced the creation of a new viewing technique, which is able to combine light with sound to look inside living creature... |
1 July 2009
06:27 GMT |
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An inter-disciplinary team from the University of Pennsylvania and the University of Wisconsin, comprised of chemists and anesthesiologists, has devised a new model of discovering how anesthetics spread through the human body when people “go under.” The new technique makes use of a fluorescent compound, w... |
6 April 2009
08:44 GMT |
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How can one bond two DNA strands without breaking them? Well, by using a micro-sized DNA sewing machine of course! An article published in the Royal Society of Chemistry Journal Lab on a Chip has recently detailed an invention created by Japanese scientists which allows researchers to bond and manipulate individual D... |
14 July 2008
05:28 GMT |
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Most of the modern light sources today are still represented by incandescent light bulbs, which haven't evolved a great deal ever since they were first invented. Basically, typical incandescent light bulbs have a less than 10 percent efficiency, the remaining 90 percent of energy being dissipated in the surround... |
1 July 2008
09:41 GMT |
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Electron guns are devices often used by CRT "cathode ray tube" displays in order to produce light on a phosphorus-coated glass screen. This is how CRTs work. The electron gun generates a beam of electrons which is targeted at the screen. The beam can be deflected on all three axes by the image driver with the help of... |
17 May 2008
06:30 GMT |
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Black lights may occasionally be disguised into traditional lighting sources such as incandescent light bulbs or fluorescent tubes, but they function and have different roles than those of ordinary lighting sources. Black lights are mostly used in order to make certain substances or objects 'glow in the dark... |
16 April 2008
07:49 GMT |
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The beautiful northern lights, or Aurora Borealis as they are commonly known, are usually triggered in the northern regions of the Earth, as electrically charged particles originating in the solar winds are captured by the planet's magnetic field and drawn towards the general regions of the poles. These electric... |
12 December 2007
06:39 GMT |
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When we put together genes from 2-3 species, the results can be astonishing. But fantasist hybrid mutants like the "Ninja Turtles" would be of no use. Instead, this method was employed by a team at Temple University School of Medicine, which has made a new biosensor that finds explosives and could be employed for che... |
9 May 2007
07:09 GMT |
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Every material exposed to high-intensity light will degrade over time. White paper turns yellow, dyes bleach and fade, and molecules that fluoresce when struck by a laser - as the chemical in the present study does - stop fluorescing. Until recently, that degradation in response was thought to be irreversible.Physici... |
10 April 2007
03:38 GMT |
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Fluorescence is a luminescence that is mostly found as an optical phenomenon in cold bodies, in which the molecular absorption of a photon triggers the emission of another photon with a longer wavelength.The energy difference between the absorbed and emitted photons ends up as molecular vibrations or heat. Usually t... |
31 March 2007
04:05 GMT |
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Psychopath minds, give it up!Even the vasectomy or lack of sperm cells won't save your butt from jail now ... A new DNA analysis technique will allow individual detection even in semen samples with no sperm cells, in cases of sexual assault. In fact, the main problem of forensics trying to fingerprint the DNA o... |
8 March 2007
05:50 GMT |
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