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More Efficient Plant Growth with Quantum Dots by Nanoco Lighting - trigogog - 12-27-2021
More Efficient Plant Growth with Quantum Dots by Nanoco Lighting
Using LEDs for plant growth lights is nothing new, nor is the use of QDs in LED lighting. While it is already proven that LED systems have big advantages over conventional plant lighting technologies, it is not common knowledge that Cd-free QDs are ideal candidates for optimizing the light spectrum for plant growth systems. Dale Needham, Business Development Director-Lighting at Nanoco Lighting, explains the opportunities and advantages based on Nanoco’s proprietary and patentprotected CFQD cadmium-free quantum dot LED grow lighting systems.
For plants to thrive, they require the full-spectrum light of the sun; chlorophyll in the foliage absorbs sunlight to provide energy for all of the plant’s needs, while photosynthesis - using wavelengths between 400 and 700 nanometers (nm) - is the plant’s process of converting light energy from the sun. Most plants do not need all of the color bands in the visible spectrum. For instance, flowering plants use the full spectrum of visible light, but some wavelengths are more important than others. Red light is crucial for hormone activation, which powers the flowering and fruiting processes, while blue light encourages the compact “bushy” appearance of healthy plant growth. For this reason, growers relying on artificial plant lighting such as LEDs concentrate on the blue and red parts of the spectrum.
Precise spectrum light, along with the intensity and duration of that light, simultaneously triggers plant flowering, growth, and reproduction, yet plants are quite selective in the light they use. Generally, their requirements are limited to small, specific bands of light, and they reject any additional light that’s not needed. This might suggest that sunlight is rather inefficient as a plant’s energy source, but, due to its abundance of light energy, wastage is hardly noticed. In grow lighting environments, however, the exact amount of lighting that’s needed for plant growth must be provided artificially, while too much lighting can be harmful to plants, inefficient, and quite costly for vertical system farmers. The product wasquantum growth lightand it was a meaningful
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Benefits of LED Lighting
LEDs provide particular benefits to the grow light and horticulture industries because, unlike traditional sources such as incandescent, fluorescent, halogen, or high intensity discharge lamps, they can be customized to encourage chlorophyll absorption in plants. By promoting healthy development through wavelength specificity and linear photon output, consuming far less energy, and casting less heat, LEDs are not only a cost-effective solution, but also improve the agriculturist’s ability to control their growing environment. However, challenges exist in easily tailoring existing LED fixtures to meet direct specifications in color for plant variation and different stages of growth.
A new technology with unique optical qualities is poised to take on this challenge. Cadmium-free quantum dots enable emission wavelength precision that consistently produces the clear and concentrated color essential for vertical grow systems. Tuning the size of these brilliant nanoparticles makes it possible to tweak the light emitted from an LED system to any color in the spectrum, while maintaining the energy efficiency of the LED.
Development of LED Grow Lighting
If growing potatoes to survive on Mars sounds like a science fiction plot, consider that much of the early research into LED grow lighting was conducted by scientists affiliated with the National Aeronautics and Space Administration (NASA). As early as the 1980s, researchers began to evaluate how LED lighting systems might ensure healthy plant growth in hostile conditions, and the impact this new technology could have on serious concerns such as drought, pestilence, and world hunger.
Since blue-emitting LEDs were not yet available, the earliest experiments were limited to arrays of red LEDs. Research into industrial applications for LEDs accelerated during the 1990s, resulting in a stream of technological innovations that boosted luminous efficacy and increased the range of available colors to include blue, green, white, and more.
These developments are of tremendous benefit to scientists working in horticultural lighting, for whom LEDs represent “the first light source to have the capability of true spectral control, allowing wavelengths to be matched to plant photoreceptors to provide more optimal production and to influence plant morphology and composition.”
Greater spectral control is one of several advantages that LEDs maintain over traditional grow lighting systems. To achieve the ultimate spectrum for grow lighting, color temperature, measured using the Kelvin scale at a given wavelength, is one of the most important considerations. As a standard definition, the color temperature of a light source is the temperature of an ideal blackbody radiator that radiates light of comparable hue to that of the light source. The sun closely represents a blackbody radiator with a color temperature of about 5,900 K. Respectively, when discussing LEDs, colors above 5,000 K are known as cool blues and closely resemble natural sunlight, whereas colors below 3,000 K are known as warm reds.
In search of this ideal spectrum and most sufficient and efficient light source for indoor agriculture, the lighting market has evolved with various solutions triggering different responses from the plants - blue light inducing vegetative growth and red light inducing flowering. Some of these traditional grow lighting systems specialize in certain parts of the spectrum, while others span multiple wavelengths.
The Best Reading Lights
A reading light is one that can be used for reading, writing, sketching, working on a computer, craftwork, and other detail-oriented activities. Reading lights illuminate a small area over a close distance so that you can get a better focus on your activity.
Picking the right light for reading can be tricky, as reading lights vary vastly in their designs, functions, and features.
You surely don’t have to be an expert or a lighting engineer to be able to buy a good reading light, but some basic knowledge wouldn’t hurt.
For a set of lamps that shine efficiently on your book, and convey a high taste of decors, we recommend these Regency Hills.
Each of the lamps comes in a curvy body with decorative carved leaves in wood finish, creating a bold, traditional feel. Its deep bronze color and a brownish, ivory shade match beautifully with other wooden furniture in your bedroom.
Each lamp has a shade to direct the light to more focused areas above and under it. The creme shade, meanwhile, creates a soft romantic glow. Lit together on both sides of the bed, you will feel like the entire room is full of moonlight.
As the lamp is high (30″ or 76cm), you can now enjoy your book in bed in the most comfortable position. The light is always sufficient regardless of you sitting upright or reclining, or lying straight down. No need to adjust your position all the time to catch a beam like when you’re with smaller lamps.
Despite being tall, the lamp stays sturdy on your table without taking much space. That is thanks to its considerate design with a thin profile on both the body and the shade.
Your small bedside tables or petite nightstands can easily accommodate the lamp, together with your books and a chocolate cup.
Each lamp comes with a metal body engraved with nature patterns, nicely covered in a bronze finish. Its graceful arm is adjustable, reaching out and sliding back to where you please to ensure sufficient space and light focus for your bedtime activities.
Joining the lamp to finish the traditional French country look is a faux leather shade. The shade is slightly brownish in color, promising to deliver a warm, pleasant light. The shade pairs perfectly with the metal parts to create an intimate, but classic and luxurious feeling in the room.
The best reading light on your headboard is one that is portable, produces warm gentle light, but at the same time has a focused area so you don’t have to widen your eyes to be able to read. This Newhouse is such one.
At 300 lm, the light is sufficient for reading in a dimmer lit environment. As it is very soft, your eyes do not have to adjust themselves between pauses of your read, when they drift off the lit pages into darker areas in the room.
Designed for “stress-free productivity and enjoyment”, the Newhouse produces an adequate glow at 3000K. It is pleasant to the eye, warm enough to not mess with your melatonin (the sleep hormone), but bright enough to not lure you to sleep 3 minutes into your book.
The light comes with a sturdy clamp that opens to approximately 2 inches. To protect the gripped surface from the strong grip, 6 suction cups are added inside it. If you have had table reading light that scratch or peel off the paint on your reading table or headboard, you’re gonna appreciate this.
In terms of design, the cutie has a sleek, shiny appearance. It comes in 3 colors: black, purple, and bright blue. Personally, I can see it matching better with modern designs and decors.
The light would be perfect if it had a dimmable function for those who want a fast read to lure themselves to sleep.
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RE: More Efficient Plant Growth with Quantum Dots by Nanoco Lighting - wherewolf - 11-04-2022
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RE: More Efficient Plant Growth with Quantum Dots by Nanoco Lighting - wherewolf - 10-11-2023
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RE: More Efficient Plant Growth with Quantum Dots by Nanoco Lighting - wherewolf - 11-11-2024
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