Sentences with word «luminescence»
"Luminescence" refers to the emission of light from an object or substance without generating heat. It can be seen in things like glowing stars, glowing animals, or certain materials that produce light when they are exposed to energy or light. Full definition
The researchers say Rising Star Cave was dated using a combination of optically stimulated luminescence of sediments with uranium - thorium dating and paleomagnetic analyses of flowstones to establish how the cave sediments relate to the geological timescale in the Dinaledi Chamber.
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Of luminescence dating techniques.
Optically stimulated luminescence dating of single and multiple grains of quartz from perennially frozen loess in western Yukon Territory, Canada Comparison.
«We've seen an increase in luminescence efficiency from one percent to 89 percent, and we think we could get it all the way to 100 percent, which means we could have no voltage loss — but there's still a lot of work to be done.»
The control panel features switches that are slimmer and neater than previously, with larger lettering, and with surface luminescence for easier use at night.
With a belief that the unconscious activates emotion, Rothko expresses an existential moment of luminescence as if the cognitive function succumbs to the emotive.
This produces luminescence at two separate wavelengths that have lifetimes ranging from 277 millionths of a second to about 100 billionths of a second.
The team also suggests that the bright luminescence of their lanthanide oxybromides might also be used in low - energy lighting applications as an alternative to compact fluorescent bulbs and light emitting diodes (LEDs).
With subject matter ranging from floral still lifes to dramatic landscapes, the works on view use luminescence as a painterly medium to convey attitude, emotion, and atmosphere.
In such cases, Dill's lines of luminescence take over our optical perception and reveal themselves not merely as neon art in the wake of Lucio Fontana, Dan Flavin, and Stephen Antonakos, but as Light and Space art in the spirit of Robert Irwin and James Turrell.
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The centerpiece of the villa is its spectacular pavilion, with its soaring, vaulted ceiling of rustic wood beams and pendant lanterns that cast an enchanting luminescence on your gatherings with loved - ones.
When doped with an appropriate amount of europium, a rare - earth metal, the compound displays intensive luminescence over a very narrow range of frequencies in the red band.
Now, in a first - in - human study, British researchers have provided a possible solution using Cerenkov luminescence imaging (CLI), which combines optical and molecular imaging by detecting light emitted by the PET radiotracer F -18-fluorodeoxyglucose (F -18-FDG).
Plus, for measuring luminescence assays, it is important to ensure that the dynamic range offered by the microplate reader suffices the variety of experiments that will be planned in the future.
When this function is in use, soft luminescence of the screen comfortable for reading in dark rooms is being generated.
Sun Chemical and its parent company, DIC Corporation, have acquired UK - based Luminescence Holdings.
To track the long - term viability of the islet cells, she used cells with a gene that produces a green luminescence when excited by certain wavelengths of light.
«With its unique luminescence properties the new material surpasses all red - emitting phosphors yet employed in LEDs and has great potential for industrial applications» Schnick concludes.
«We believe that the fundamental aspects of these findings — that crystal structures can greatly influence luminescence properties — could allow upconversion nanocrystals to eventually outperform conventional fluorescent biomarkers,» says Liu.
The new devices have luminescence systems that function more like cathode ray tubes, with carbon nanotubes acting as cathodes, and a phosphor screen in a vacuum cavity acting as the anode.
By tailoring of the zeolite host, they demonstrated luminescence efficiencies close to 100 per cent.
White luminescence means that the fluorescence spectrum of [10] CPP - I covers the whole visible light range.
Single - crystal thiophene - phenylene (TPCO) and furan - phenylene co-oligomers (FPCO) have a great potential for the application in optoelectronics and photonic devices, since they combine high luminescence and efficient charge transport.
«Great instrument for various colorimetric and fluorescence / luminescence assays.»
As a result, Amy's skin was flawless and slightly glowing as there is a subtle luminescence in the mixture.
Offering gracious comfort, a fantastic oceanfront view from almost every room and tropical luminescence for a perfect Kauai vacation.
Working with oil paint and cold wax, Sandrine Kern creates works of layered luminescence, deeply informed and influenced by color.
Martin's specific process of using acrylic lends her work a highly - sophisticated tonality; colors absorb and reflect light, adding a particular luminescence that appears to dissolve the painted surface, no matter how textured and corporeal, into atmospheric light.
Each work possessed luminescence born from subtle colors with each painting manifesting a different quality that made the works stand out.
Nanocrystals selectively infused, or «doped», with rare - earth ions have attracted the attention of researchers, because of their low toxicity and ability to convert low - energy laser light into violet - colored luminescence emissions — a process known as photon upconversion.
«The basic point is that if luminescence occurs, something very different is actually happening than what we think is happening,» said Dr. Bernhard Sellner, a PNNL postdoctoral fellow and a theoretical chemist on the study.
Lights shone with other - worldly luminescence and my thought process became increasingly fluid.
The lanthanide ions then emit the energy as luminescence whose color varies depending on the lanthanide used.
Doping terbium MOFs with 5 % europium results in orange luminescence.
They can also be used for biological labeling because of their low toxicity, chemical stability, and intense luminescence when excited by near - IR radiation, which can penetrate tissue much better than higher energy radiation such as ultraviolet, as is often required with quantum dot labels.
For this study, a tumor cell line was transplanted into a rat and imaged with each of the following: conventional MRI, the radiotracer carbon - 13 (C - 13) pyruvate and hyperpolarized MRI at a resolution of 2.5 mm, Medipix positron detector, luminescence sensor and a fluorescence microscope.
«Is there some sort of fluorescence or luminescence involved or is [light] reflected from distant suns?»
This suggests that manmade luminescence (two examples shown above) may have long - lasting impacts on natural ecosystems, changing which species live — and dine — in certain communities and potentially reordering local food webs.
This strategy led to the discovery of NIR luminescence and also paves the way for other types of nanoparticle alloys that are useful not only in imaging, but in applications like catalysis for the industrial - scale conversion of fossil fuels into fine chemicals.
«They're saying, «We understand what's going on inside the bubble,» and if this is what you believe the science is, you should be suspicious of the Taleyarkhan paper,» says Lawrence Crum, an acoustician at the University of Washington, Seattle, and one of the first people to study single - bubble luminescence.
Scientists can then use the lifetime of the resulting luminescence to calculate the temperature of the probe: As the temperature drops, the diamond glows for longer periods of time.
«I learned that the use of europium was intentional,» Meijerink says, «but I am sorry to say that I have no inside information on who, where, and how it was decided to use the europium luminescence.»
This difference makes the nickel - doped diamond luminescence extremely sensitive to fluctuations in temperature.
Most forms of quorum sensing, including V. fischeri's luminescence circuit, act as a private language — that is, each germ speaks only to others of its own kind.