Insects and animals self shine:
Many insects and animals can self shine, which is called bioluminescence. The principle of bioluminescence is that a specific chemical reaction takes place in the organism to release energy, thus stimulating the light-emitting molecules in the fixed structure to generate light radiation. These light-emitting molecules are usually some proteins, called fluorescein. Through a series of enzyme catalysis, fluorescein is converted into excited substances. When these substances lose excitation energy, the released energy forms fluorescence.
Fireflies are one of the most famous terrestrial light-emitting organisms. Their light-emitting ability mainly comes from the specialized light-emitting devices in their abdomen. The light emitter is a silver gray transparent film from the outside, and actually contains a light emitting layer, a transparent layer, and a reflective layer. There are thousands of light-emitting cells in the film, surrounded by many tiny tracheas and delicate nerve branches. Luminescent cells contain luciferin and luciferase. When oxygen enters the cell through the trachea, under the action of luciferase, luciferin will be activated. When combined with oxygen, you can see the light from the belly of fireflies.
Fireflies control the amount of oxygen entering through the respiratory rhythm, and can form flickering flashes. This light is a kind of "cold light", because there is almost no heat generated in the process of luminescence, and the energy efficiency is extremely high.
In addition to fireflies, many creatures in the deep sea can also emit light, such as some fish, jellyfish, corals, shellfish and worms. The colors of these bioluminescence are different. Most of them emit blue or green light, and a few emit yellow or red light. Bioluminescence has many biological meanings in the biological world, including but not limited to:
1. Courtship signal: Many species attract the opposite sex through specific light emission mode to complete reproduction.
2. Alert and defense: some creatures warn potential predators by emitting light, or confuse predators by imitating the light patterns of other species.
3. Predation: Some creatures use light to attract prey, or provide illumination when they prey.
4. Communication: some organisms conduct intraspecific communication and transmit information through luminescence.
Bioluminescence is not only a natural phenomenon, but also widely used in scientific research and medical fields, such as cancer research, gene expression analysis, protein interaction research and other fields.
Mammalian Self Illumination:
In mammals, the phenomenon of self luminescence is not as common as in insects or deep-sea organisms, but there are some exceptions. Mammalian fur can emit light under certain conditions, which is called photoluminescence. Photoluminescence is a physical process. When materials (such as mammalian fur) are exposed to light (usually ultraviolet), they will absorb light energy and re emit it in the form of visible light later.
Although all mammalian fur may have a low level of photoluminescence due to the presence of keratin, if the fur contains a high concentration of tryptophan metabolites or porphyrins, the luminescence of the fur will be more obvious under ultraviolet radiation. This phenomenon may be more common in some nocturnal mammals, because their living habits make them more exposed to the night environment, which may contain more ultraviolet light sources.
In addition, some mammals may emit light through symbiosis. For example, some deep-sea fish use symbiotic bacteria to generate light to attract prey or perform other bioluminescence behaviors. Although this is not the bioluminescence of mammals themselves, it shows an adaptability of bioluminescence in different organisms.
In general, there are relatively few self luminescence phenomena in mammals, but under certain conditions or through symbiosis, some mammals can indeed emit light. This phenomenon has potential application value in scientific research. For example, in biomedical research, bioluminescence can be used to track cancer cells or study the interaction of biomolecules.
Self illumination of human body:
The human body can indeed emit a weak light, which is called human glow. According to scientific research, human glow is related to the biological clock, and its intensity fluctuates throughout the day. The weakest time is usually 10 a.m., while the strongest time is 4 p.m., and then gradually weakens. This luminescence phenomenon may be related to the fluctuation of human metabolic rhythm in a day. The face emits more light than other parts of the body, probably because the face receives more sunlight, and the melanin in the skin color has fluorescent components, which may increase the "production" of light.
Human cell luminescence is the result of the movement of cellular reactive oxygen free radicals in cells, which reflects the oxidative function and activity of cells. Therefore, the intensity of human cell luminescence has a great relationship with human health. However, this kind of light is very weak and cannot be directly observed by the naked eye, so special instruments are needed to detect it.
Clothing self luminous:
As for how to make clothes self luminous, scientists have developed an intelligent electronic fabric, which can be used as a large area display screen to present diversified content according to different digital signal inputs. In the design of this electronic textile, the conductive weft and light-emitting warp fibers are interwoven together, and a micron level electroluminescent unit is formed at the contact point between the weft and the warp. This fabric shows excellent extensibility, breathability and durability, and can also be used as a large area display screen. By changing the applied current, the brightness of the electroluminescent unit can be accurately adjusted to achieve a dynamic display effect.
In addition, the research team of Fudan University has also developed a fully flexible fabric display system, which can integrate the preparation of display devices with the fabric weaving process to create a new flexible display fabric. This fabric can not only emit light, but also realize a variety of electronic functions, such as keyboard and power supply, providing new possibilities for the development of intelligent electronic textiles.
Self luminous clothing independent of external power supply:
At present, scientists have developed a new type of smart fiber, which can achieve self illumination without relying on external power supply. The working principle of this fiber is based on the energy interaction mechanism of "human body coupling". It can use the electromagnetic energy in the environment to transfer these energy to the fiber through the human body as a conductor, so as to achieve luminescence.
This smart fiber has a three-layer sheath core structure, including a fiber antenna that induces alternating electromagnetic fields, a dielectric layer that improves the coupling capacity of electromagnetic energy, and an electric field sensitive light-emitting layer. These raw materials are common in the market with low cost, and the processing of fibers and fabrics can meet the conditions for mass production by using mature processes.
The textile woven with this fiber can realize human-computer interaction functions such as light-emitting display and touch control without relying on chips and batteries.
This not only simplifies the hardware structure, but also enables smart textiles to get rid of the shackles of traditional batteries and chips and achieve true wireless intelligence.
In addition, this fiber also has the functions of energy collection, information perception and transmission, and can realize wireless command transmission and other functions. When in contact with the human body, it can visually sense, interact and even highlight lighting by emitting light. At the same time, it can generate unique wireless signals for different postures of the human body, and then conduct wireless remote control for electronic products such as smart appliances.
The application prospect of this technology is very broad, which can be applied to daily textiles such as clothing, fabric decoration, etc., providing a new design space for intelligent textiles, and helping to promote the wide application of electronic products in daily life.
Post time: 2024-11-14 09:41