Trichromatic Fluorescent Powder with High Brightness in China
- Ref Price:
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 23 kg
- Supply Capability:
- 100000 kg/month
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Description of LED Fluorescent:
The degradation of electroluminescent devices depends on frequency of driving current, the luminance level, and temperature; moisture impairs phosphor(Fluorescent Powder) lifetime very noticeably as well.
Festures of LED Fluorescent:
Phosphor layers provide most of the light produced by fluorescent lamps, and are also used to improve the balance of light produced by metal halide lamps. Various neon signs use phosphor layers to produce different colors of light. Electroluminescent displays found, for example, in aircraft instrument panels, use a phosphor layer to produce glare-free illumination or as numeric and graphic display devices. White LED lamps consist of a blue or ultra-violet emitter with a phosphor coating that emits at longer wavelengths, giving a full spectrum of visible light.
Specifications of LED Fluorescent:
Appearance: Yellow crystalline powder
Chemical composition: Rare earth aluminate
Physical stability: waterproof and heatproof. No any changes under -50°C to 300°C in the air.
Chemical stability: under 200°C, brightness >90%; within 1000 hours after encapsulation, brightness decay
Safety: Conform to the RoHS {EU (Restriction of Hazardous Substances)} and all security standards. Non-poisonous, non- radioactivity and do no harm to human and environment.
Images of LED Fluorescent:
FAQ:
1.When can i get the price quotation?
We can send you the quotation within 24hours after your inquiry, including the shipping cost if you need.
2.What about payment term?
30% T/T deposit, balance against B/L copy.
Full T/T payment if quantity less than MOQ.
3. What’s your after-sales service?
One-year warranty, and 1% common accessories.
- Q: Please and thank you, it doesn't say so on the website.
- Mac Pigment Ingredients
- Q: can the pigment know as Chinese purple form a matter wave in certain circumstances?
- Scientists explore atomic mysteries of ancient pigment LOS ALAMOS, N.M., Nov. 18, 2004 -- University of California scientists from the National High Magnetic Field Laboratory, Pulsed Field Facility at Los Alamos National Laboratory, working with colleagues from Tokyo Metropolitan University, the University of Buenos Aires in Argentina, the National Institute of Chemical Physics and Biophysics in Estonia, the National High Magnetic Field Laboratory in Tallahassee, Florida and the University of Tokyo, have discovered an ideal candidate for Bose-Einstein condensation in the ancient Chinese pigment, Han Purple. In research featured recently on the cover of Physical Review Letters, the team describes how the application of a strong magnetic field to Han Purple (BaCuSi2O6) creates a gas of bosonic spin triplet excitations. The field acts as a chemical potential causing the weakly interacting bosonic gas to undergo Bose-Einstein condensation (BEC) when the temperature is reduced to minus 453 degrees Fahrenheit, six orders of magnitude higher than the temperature normally required for BEC in atomic gases.
- Q: what is the pigment in hibiscus?
- Hibiscus flowers bear pigments of three types: carotenoids, anthocyanins, and flavonols. The exact pigments (all three of those types are actually sizeable families of similar chemicals) and the exact proportions depend on the color of the particular flower: there are literally several hundred species in the genus Hibiscus, and they come in all shades of red, pink, yellow, and orange. Carotenoids are oil-soluble, fairly stable pigments that come in all shades of red, orange, and yellow. Anthocyanins are water-soluble and significantly less stable: they're responsible for the blues, pinks, purples, and reds, and in high concentrations can produce colors so dark as to look black. Flavonols are the least vivid of the pigments: they produce pale pastel yellows, cream colors, and off-whites. (Plain white flowers usually have no visible pigment at all.) Flavonols actually do most of their color absorption in the UV spectrum: they're the plant equivalent of the melanin in human skin, keeping them from getting sunburnt.
- Q: I hear about it cause my Friend is albino and she was born with no pigments in her hair,skin or eyes
- Melanin is a pigment that is ubiquitous in nature, being found in most organisms (spiders are one of the few groups in which it has not been detected). In animals melanin pigments are derivatives of the amino acid tyrosine. The most common form of biological melanin is eumelanin, a brown-black polymer of dihydroxyindole carboxylic acids, and their reduced forms. All melanins are derivatives of polyacetylene. The most common melanin – dopamelanin – is a mixed copolymer of polyacetylene, polyaniline, and polypyrrole. Another common form of melanin is pheomelanin, a red-brown polymer of benzothiazine units largely responsible for red hair and freckles. The presence of melanin in the archaea and bacteria kingdoms is an issue of ongoing debate among researchers in the field. The increased production of melanin in human skin is called melanogenesis. Production of melanin is stimulated by DNA damage induced by UVB-radiation,[1] and it leads to a delayed development of a tan. This melanogenesis-based tan takes more time to develop, but it is long lasting.[2] The photochemical properties of melanin make it an excellent photoprotectant. It absorbs harmful UV-radiation and transforms the energy into harmless heat through a process called ultrafast internal conversion. This property enables melanin to dissipate more than 99.9% of the absorbed UV radiation as heat[3] (see photoprotection). This prevents the indirect DNA damage that is responsible for the formation of malignant melanoma and other skin cancers. Albinism (from Latin albus, white; see extended etymology, also called achromia, achromasia, or achromatosis) is a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of an enzyme involved in the production of melanin.
- Q: what roles do pigments have in energy transfer?
- Pigments okorder /... When a photon of just the right amount of energy strikes an electron resonating in the pigment, the electron can absorb the photon and get promoted to a higher quantum level. The photon must have just the exact amount of energy to boost the electron from its current level to its new level or it cannot be absorbed. If the incoming photon is just right to promote an electron, in that pigment, the newly energized electron resonates along the bonds at the higher energy level where it can pass to the photosynthetic reaction center from the pigment array, to split water and take back an electron. Meanwhile the chlorophyll's electron passes to the electron transport chain to begin oxidative phophorylation.
- Q: What is pigment?
- Pigment is a substance that gives color to tissue. Pigments are responsible for the color of skin, eyes, and hair. I don't think you can buy pigment unless you're buying a product that changes the look of your pigment such as a self tanner lotion. Or a product may say the pigment is red but the product itself is not pigment. Pigment is a natural exsisting substance within your skin and inside your eyes and hair.
- Q: In photosynthesis whats the difference between primary and accesory pigments?
- Primary pigments are molecules that convert light energy to chemical energy directly; chlorophyll is the primary pigment in all photosynthetic organisms. Accessory pigments are molecules that absorb photons which are not captured by chlorophyll. The presence of accessory pigments (found in the thylakoid membranes of plants) allows phototrophs (plants, algae, and cyanobacteria) to capture energy from the sun that would otherwise go to waste. The two most common types of accessory pigments are carotenoids and phycobilins. Some examples of carotenoids in common plants are: beta-carotein (carrot orange), lutein (marigold yellow), and lycopene (tomato red). Phycobilins are found only in red algae or cyanobacteria. The two most common phycobilins are: phycoerythrin (red), and phycocyanin (blue). The presence of accessory pigments in plants is masked by the presence of chlorophyll during the Spring and Summer seasons; that's why leaves are green most of the time. The color change from green to red, orange, or yellow that we observed during the Fall season is caused by the absence of chlorophyll; the accessory pigments are always present until the leaves fall as the trees go into dormant mode.
- Q: what are accessory pigments?
- Accessory pigments are light-absorbing compounds, found in photosynthetic organisms, that work in conjunction with chlorophyll a. They include other forms of this pigment, such as chlorophyll b in green algal and higher plant , while other algae may contain chlorophyll c or d. In addition, there are many non-chlorophyll accessory pigments, such as carotenoids or phycobiliproteins which also absorb light and transfer that light energy to photosystem chlorophyll. Some of these accessory pigments, particularly the carotenoids, also serve to absorb and dissipate excess light energy, or work as antioxidants. The different chlorophyll and non-chlorophyll pigments associated with the photosystems all have different absorption spectra, either because the spectra of the different chlorophyll pigments are modified by their local protein environment, or because the accessory pigments have intrinsic structural differences. The result is that, in vivo a composite absorption spectrum of all these pigments is broadened and flattened such that a wider range of visible and infrared radiation is absorbed by plants and algae. Most photosynthetic organisms do not absorb green light well, thus most remaining light under leaf canopies in forests or under water with abundant plankton is green, a spectral effect called the green window. Organisms such as some cyanobacteria and red algae contain accessory phycobiliproteins that absorb green light reaching these habitats. For more kindly click on the links below --- en.wikipedia.org/wiki/Accessory_p... en.wikipedia.org/wiki/Photosynthe...
- Q: the absorption spectrum and the range of light reflected by each
- three major pigments are 1.chlorophyll a 2.chlorophyll b 3.carotenoids chlorophyll a is the major pigment,chlorophyll b n carotenoid are the accessory pigments which help in absorption of the incident light of different wavelengths. another pigment xanthopyll-fucoxanthin is also present in some plants
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Trichromatic Fluorescent Powder with High Brightness in China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 23 kg
- Supply Capability:
- 100000 kg/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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