Articles tagged with Color
The Kobe University team demonstrates glossy, non-iridescent, and protection-coated structural color coatings for 3D objects, reducing diffuse reflectance and increasing color brightness. The coatings are lightweight, making them ideal for aircraft and other applications where weight reduction is crucial.
Researchers propose a new theory explaining why humans perceive colors as combinations of red, yellow, green, and blue. They suggest that our brain simplifies the natural world's color palette to encode the range of colors, capturing the idea of opponency in color vision.
Researchers found that hot temperatures during development reduced the brightness of Morpho butterfly iridescence, making them duller and more susceptible to predation. The effects of this color change on predators or possible mates remain unknown.
Damselflies break optical barriers to produce vivid, angle-independent colors using structural dispersion and pigment loading. This discovery provides a blueprint for creating sustainable, highly saturated photonic materials that could replace toxic synthetic pigments.
Researchers at Kobe University have developed a method to print structural color using an inkjet printer, enabling the creation of vibrant colors without pigments or dyes. The new technology has potential applications in display and anti-counterfeiting technologies.
L. Jay Guo, University of Michigan professor, recognized for scalable nanopatterning technology enabling next-gen flexible electronics and structural color applications. His work has attracted interest from major companies like Samsung and Toyota.
Researchers at Cornell University have developed a method to produce the darkest fabric currently reported, with no angle dependency. The team used polydopamine and etching in a plasma chamber to create nanofibrils that mimic the light-trapping capabilities of the riflebird's ultrablack feathers.
Biologists have discovered that shiny colours serve as signals for pollinators and mates, but compromise colour perception at close range. This study found that dynamic, shiny colours are more conspicuous from afar, but harder to discern in detail.
Researchers demonstrate that bacteria can produce fabric and dye it in every color of the rainbow using a single vat. The approach uses bacterial cellulose as a potential alternative to petroleum-based fibers, reducing greenhouse gas emissions and environmental harm. The developed method yields vibrant colors that survive washing and h...
Researchers discovered a unique nanostructure in blue shark skin that produces their iconic blue coloration, which also suggests a potential capacity for color change. Tiny changes in guanine crystal spacing can alter the shark's body color to suit its environment.
Researchers at Kobe University discovered that red algae use structural color to communicate with each other. The discovery was made in the European Journal of Phycology and suggests that these colors may serve as a warning signal to algae-eating fish.
The study provides a new look at the galactic region surrounding our solar system, revealing a roughly uniform background Lyman alpha sky brightness. The findings suggest hot interstellar gas bubbles may be regions of enhanced hydrogen gas emissions at a wavelength called Lyman alpha.
Researchers at UC Berkeley created a platform called Oz that controls up to 1,000 photoreceptors in the eye at once, enabling the perception of a blue-green color named 'olo'. This breakthrough could provide new insights into human sight and vision loss, as well as answer basic questions about color vision.
Researchers have developed a blue cosmetic color additive that gives foundations the warmth and depth they currently lack, resulting in improved shades for darker skin tones. The new formulation uses ultramarine blue to reduce gray cast and create warmer hues.
A study published in PNAS found that young children perceive colors similarly to adults, with consistent structure across age groups and cultures. The researchers developed a touch panel interface to evaluate conscious experiences, revealing robustness in their approach.
Researchers investigated genetic and sensory mechanisms behind mate preferences in Heliconius cydno butterflies with yellow or white wing patches. They found that males prefer females with matching wing colors due to differences in how sensory information is processed.
The study introduces a game-changing concept in dual-mode display design by uniting luminescence and coloration within a single device. The device leverages smectite clay to stabilize europium(III) complexes for vibrant luminescence and heptyl viologen derivatives for striking color changes.
Researchers developed a novel coating material that captures the brilliance of structural colors using melanin particles, producing non-iridescent color even when viewed from different angles. The coatings displayed a contact angle of over 160 degrees, monochromatic hues, and a self-cleaning surface.
Researchers discovered that plants in shaded conditions receive a larger proportion of green and far-red light, which contributes to photosynthesis. This finding may help growers develop new methods for supplementing natural sunlight with colored light.
Kobe University has developed a new way to produce colors using nanospheres, which could reduce the environmental impact of paints and cosmetics. The technology uses silicon spheres to scatter light, creating bright and brilliant colors that do not fade or change with viewing angle.
Around 450,000 UK children with color blindness are being failed by the education system due to a lack of recognition and support from schools. Colour blindness affects how people see the entire visible colour spectrum, not just red and green.
A recent study found that color vision evolved in animals over 100 million years ago, with a dramatic increase in colorful signals, including warning and sexual signals. The study suggests that warning signals are more widespread among animals than sexual signals.
Researchers at Pusan National University developed a fast-responding colorimetric sensor with an expanded color gamut, capable of detecting humidity and other environmental changes in real-time. The sensor outperforms previous designs with a wide color representation and rapid responsiveness.
Researchers developed a new spectroscopy method using tunable lasers, enabling precise tracking of the laser's color at every point in time. The technique offers higher power and spectral stability compared to existing methods, making it suitable for various applications including LIDAR and spectroscopy.
A recent study published in iScience found that newborn chicks are predisposed to learn quicker based on the colour of their mother. The research team discovered a colour-dependent bias in learning speed, with chicks exposed to a deep blue mother learning faster than those raised by mothers with other colours.
Scientists at Kyushu University created QDyeFinder, an AI pipeline that untangles the dense neuronal networks in the brain. The system uses a super-multicolor labeling protocol to tag neurons and then automatically identifies their structure by matching similar color combinations.
Researchers found that early exposure to limited color information helps the brain develop robust object recognition skills. Children born blind who have their sight restored later in life struggle with identifying objects in black-and-white images due to overreliance on color cues. The study suggests that early visual experience plays...
Kobe University researchers have discovered that the shimmering effect in some brown algae is due to the presence of tiny, uniform-sized spheres within cells called iridescent bodies. These microspheres reflect green light more than other colors, resulting in the alga's characteristic shine.
Columbia University neuroscientists have identified brain-cell circuitry in fruit flies that converts raw sensory signals into color perceptions, which could underlie how creatures large and small see wavelengths of light as information-rich hues. The discovery reveals a complex neural mechanism responsible for hue selectivity, allowin...
A team of researchers from the University of Rochester used adaptive optics to identify rare retinal ganglion cells that could help explain how humans perceive color. These non-cardinal RGCs may work in tandem with cardinal RGCs to create more complex color perceptions.
Researchers developed a new tool to improve the accuracy of electronic devices that measure plant leaf color to assess health. The software uses polarization to account for variations in light and reduce errors caused by glare.
Researchers found that a language's past color vocabulary influences its ability to evolve, with constraints on vocabulary growth and changes in meaning. The study used the World Color Survey dataset to explore how new terms are introduced and their meanings change as vocabulary size increases.
Researchers developed a sustainable technique to 3D print multiple dynamic colors from a single ink using UV-assisted direct-ink-write printing. The new method produces structural colors in the visible wavelength spectrum, offering vibrant and potentially more sustainable alternatives.
A new study finds that red-colored agricultural nets are more effective at deterring onion thrips than traditional black or white nets. The use of red nets resulted in a 25-50% reduction in insecticide applications, making them a promising solution for sustainable agriculture.
Researchers at Kobe University developed a new approach to producing colors using the scattering of light from tiny silicon crystals. The material enables non-fading structural colors that do not depend on the viewing angle and can be printed, promising significant weight improvements over conventional paints.
A new camera system records natural animal-view videos with high accuracy, enabling scientists to study animal behavior and navigation. The system uses four color channels, including UV light, to produce accurate video of how animals perceive colors.
A new study published in Nature Human Behaviour found that the colour of light has a limited impact on the human internal clock and sleep. The researchers exposed volunteers to different coloured lights, including blueish and yellowish lights, to determine their effect on the body.
Researchers develop a versatile imaging system for targeted spectroscopy in the eye fundus, allowing for continuous color imaging and spectral measurements. The system enables users to select targets and move them to any location within the eye fundus region without realignment or fixation changes.
ChromoSense uses a translucent rubber cylinder with colored sections to detect changes in bending, stretching, compression, and temperature. The device has potential applications in wearable technologies and soft robots, offering a more targeted and information-dense sensing solution than traditional camera-based systems.
New research from the University of South Australia found that images are more effective at signaling product variety than colors, with only 56% of color choices matching customer expectations. The study analyzed consumer perceptions of 576 products and recommended using images to convey variety and protecting master brand colors.
A study from MIT found that Tsimane' speakers who learned Spanish as a second language began to use separate words for blue and green, which are not typically used in their native language. The researchers also found that the bilingual group became more precise in describing colors such as yellow and red.
Researchers found that participants chose different grey colours when exposed to various scents, such as coffee and caramel. The study suggests that our sense of smell can influence how we perceive colour, with the presence of certain odours leading to anticipated correspondences in colour perception.
A study in Frontiers in Psychology found that unconscious 'crossmodal' associations with our sense of smell can distort perception of colors. Participants adjusted sliders to change the color of a square, but their choices were influenced by the odor they smelled, such as perceiving coffee as a reddish-brown color instead of neutral grey.
Contrary to long-held assumptions, primate species with better color vision do not necessarily exhibit more colorful traits like red skin or fur. Instead, these traits may be used for social communication, such as signaling fertility or rank in the dominance hierarchy.
A study of nearly 20,000 patients found that the color of their phlegm can indicate the degree of inflammation in their lungs and predict future outcomes. Patients with darker green or brown-colored sputum were at a higher risk of exacerbations, hospitalizations, and death.
Researchers at The Hebrew University of Jerusalem developed an innovative system of 'artificial molecules' made from two coupled semiconductor nanocrystals, achieving fast and instantaneous color switching. This breakthrough enables new possibilities in displays, lighting, and nanoscale optoelectronic devices with adjustable colors.
De-Stijl, a machine learning-based tool, suggests color palettes and demonstrates their impact in different distributions. It removes tedious guesswork from graphic design, facilitating creativity.
A recent study found significant changes in ocean color over the past two decades, affecting 56% of the world's oceans. The shift in color indicates changes in marine ecosystems, with tropical regions becoming greener due to human-induced climate change.
A new study suggests that simple limitations in neural responses explain visual illusions, rather than deeper psychological processes. Researchers developed a model that combines information on neural firing speeds, pattern perception, and natural scene assumptions to predict how animals see colour and understand visual illusions.
Paderborn researchers develop innovative approach to generating higher harmonics in silicon metasurfaces, increasing efficiency through the Fano effect. The study enables third harmonics to be generated much more efficiently than with previous known structures.
Researchers discovered that a certain short-wave or blue sensitive cone circuit is absent in marmosets and differs from the macaque monkey's circuit. This finding suggests that humans have unique neural wiring for color vision that may be linked to recent evolutionary adaptations.
Scientists create a simple approach to fabricating highly precise 3D aperiodic photonic volume elements (APVEs) for various applications. The method uses direct laser writing to arrange voxels of specific refractive indices in glass, enabling the precise control of light flow and achieving record-high diffraction efficiency.
Researchers have developed a new type of OLED display that uses strong coupling of light and matter to improve color saturation and brightness. The displays, known as polariton-based OLEDs, achieve this without compromising efficiency or viewing angle dependency.
Researchers from Xi'an Jiaotong-Liverpool University identify vital differences between the plants, including pollinators and lifespan, confirming their classification. The study highlights the importance of recognizing every species for conservation programs.
Researchers found that increasing melanin levels in human skin reduces Cherenkov emission intensity, while blood concentration affects different color channels. The study suggests using multispectral signatures to correct attenuated signals based on patient's blood volume or skin color.
A UCF researcher has developed the first environmentally friendly, multicolor alternative to pigment-based colorants using structural colors from butterflies. The new plasmonic paint is lightweight, non-toxic, and reflects the entire infrared spectrum, promising significant energy savings and reduced global warming.
Researchers from City University of Hong Kong developed a unified colour system based on prime numbers, called C<sub>235</sub>, which can represent various colours more efficiently than existing systems like RGB and CMYK. The new colour system has potential applications in designing energy-saving LCD systems and colourizing DNA codons.
Scientists discovered a Pink-throated Brilliant hummingbird with gold throat feathers, which is actually a hybrid of two pink-throated species. The hybrid's unique coloration is explained by the complex interaction of genetic and structural factors that determine feather colors.
Researchers from Saarland University have developed a method to create complex, structurally colored 3D objects using core-shell particles. These materials can be used in anti-counterfeiting technology and versatile measurement sensors.
Researchers developed a new encryption method that encodes secret messages using brilliant colors created by silver nanostructures reacting to polarized light. The method's unique chiral response makes it more secure than traditional binary codes.