While the popularity of smart machines has brought about a new era, users have never stopped their criticism of standby problems. If they forget to take mobile power, they can only find places to charge everywhere. According to Reuters, an Israeli company called StoreDot has announced that relying on nano-dot technology, the company has developed a battery technology that can fully charge the mobile phone within tens of seconds and fully charge the electric car within minutes. This technological advance will change the world's two most dynamic consumer industries. The speed of the StoreDot relies on nano-dot technology of organic nanocrystalline materials. Nano-dots have changed the way the battery works, and it is capable of dramatically increasing the charging speed while providing superior storage capabilities. The battery made of this material is like an ultra-high-density foam that absorbs and locks in large amounts of power faster. However, the material is really applied to smart phones and electric cars, but also to solve two major issues. Nano dots less than 1 micron Nano: length units. Originally referred to as nanometers, it was 10-9 meters and also 10-6 mm. It is equivalent to 4 times the atom size, which is smaller than the length of a single bacterium. Individual bacteria are virtually invisible to the naked eye and are approximately 5 microns in diameter by microscopy. For example, suppose that the diameter of a hair is 0.05mm, and it is cut into an average of 50,000 in the radial direction, each having a thickness of about 1nm. Nano-dots: Dr. Richard Bodman of the University of Southampton in the United Kingdom once stated that nano-dots are magnetic samples with a physical size of less than 1 micron (1 micron, ie 10-6 m) and are geometrically very small The unit. The nano-dot array is very suitable for the lattice media, and the consistency of the nano-dot shape and operation mode enhances the stability in the applicable field. Nanodots are used in a variety of technical fields involving nanoscale structures. They use quantum dots (quantum dots are nanocrystals made of semiconducting materials, three dimensions of which are all in the order of nanometer size) and magnetic properties in a very small range. Electric fields are locally concentrated, such as high-density information storage, energy storage, and light emitting devices. Reduce volume Improve power cycle eventually support the use of a three-year period At present, the prototype of this charger is close to the PC charger and cannot be used for smart phones. The company plans to complete the miniaturization of the battery in 2016 and introduce a new type of slim battery that can adapt to the needs of mobile phones, and realize the use of one day's worth of power for smart phones within 30 seconds. It should be noted that the nano-dot technology is actually applied to cell phone batteries instead of chargers. According to StoreDot, nano-dot technology allows batteries to be charged at an extremely fast rate while maintaining a similar discharge rate to that of traditional lithium batteries. The use of nano-dot batteries instead of lithium batteries naturally requires corresponding chargers. The company’s investors include Romain Abramovich, owner of the Russian Regal and the Chelsea football team. The company has obtained 48 million U.S. dollars in investment in two rounds of financing, among which investors include a leading mobile phone manufacturer. The founder and CEO of StoreDot, Dormy Millsdorf, declined to disclose the name of the mobile phone manufacturer, saying only that the company is from Asia. Improve power cycle Final support for three years of use This year, the number of global smartphone users is expected to reach 1.75 billion, which is a major opportunity for StoreDot. However, some experts said that StoreDot needs more improvements to this technology to be successful. “We live in a power-hungry world and people are always looking for power outlets. StoreDot really has the potential to solve this big problem,†said Zach Wiesfield, an analyst who has been involved in the assessment of the global mobile phone industry. "They have a long way to go in terms of battery volume and power cycle. If these problems are solved, it will be a very big breakthrough," he said. Power cycle refers to the number of times the battery can be charged during the life cycle. StoreDot said that in the future, the price of fast-charged mobile phones will be 100 to 150 US dollars (about 613 to 920 yuan) higher than the average mobile phone. The final version of the battery will be able to support 1,500 cycles of charge and discharge, enough to support three years of use. Milsdorf also hopes to apply this technology to electric cars and fill the electric car in two or three minutes. Nano dots change life like this Coin size chip loaded library A few days ago, the 7-nanometer magnetic nickel nano-dots developed by the National Science Foundation's Advanced Materials and Smart Structures Center aimed at a 500-fold increase in storage density to reach 10 trillion bits per square inch. At this density, a coin-sized chip can reach 5 terabytes and can hold the entire library of the US Congress in a "pocket." The US Library of Congress was established in 1800 and is the four official states of the United States. One of the libraries is also one of the most important libraries in the world. At present, the library's collection of 128 million volumes has become the largest library in the history of the library. The library has a total length of over 800 kilometers. Improve solar energy conversion efficiency Last year, scientists at Stanford University succeeded in developing a light absorber that is thousands of times thinner than paper. This nano-sized structure can absorb nearly 100% of visible light at a specific wavelength. To make such light absorbers, ultra-thin wafers are wrapped with trillion-grade round gold nano-dots. Each inch wafer contains 520 billion nanometer dots. There is a thin film on top of the wafer. The thickness of the film determines that the absorber absorbs light of a particular frequency. During the experimental phase, this prototype can absorb 99% of the light produced by the 600 nm wavelength. The thickness of the light absorber, which was previously equivalent in efficiency, is at least three times this. The research team believes that this light absorber will significantly increase the efficiency of solar cells. Nano-absorbers are expected to break the bottleneck of solar energy conversion. Not easy to oxidize LED display The StoreDot company mentioned above is also developing a new nano-dot display. This display utilizes nano-dot peptides that emit light similar to OLED emitters when powered. Peptides are made up of short-chain amino acid monomers, or a simple protein. The main industrial production method of StoreDot is to stop the process of peptide self-assembly into large-scale carbon nanotube structure. Through this process, peptides are assembled into small structures. Compared with the existing OLED display, the nano dot display has the following advantages: 1. Easy processing. The compound can be evaporated and processed by microelectronic production techniques such as photolithography. 2, long life. The compound is quite stable and the display has a lifetime of more than 100,000 hours. 3, not easy to oxidation. OLEDs are very sensitive to oxygen and water, and nanodisplays are not sensitive to the environment. 4, very cheap. StoreDot uses compounds and peptides that are currently widely used in other applications. StoreDot hopes to produce a simple nano-point flexible display prototype by the end of this year. The display may be commercialized around 2017. Silicon Nanoparticles Detect Cancer Tumor necrosis factor-α is a widely recognized cancer biomarker, but because the amount of this protein in the blood circulation is very small, detecting this molecule and accurately measuring its concentration has been a technical challenge. Researchers at the Pacific Northwest National Laboratory in the United States have developed a simple and economical electrochemical method for the detection of tumor necrosis factor-alpha at a clinical level. This assay method can also be miniaturized and it can be easily integrated into microfluidic assay systems. When the fluid added to the antibody-labeled electrode contains tumor necrosis factor-alpha, the protein binds to the antibody. Then another antibody was added to form a sandwich around the tumor necrosis factor-alpha. At this point, the researchers added calibrated silicon nanodots that bind to the antibody-tumor necrosis factor-alpha sandwich structure. Finally, the researchers added a molecule that reacts with guanine to produce a current that is collected and detected by the electrodes so that the physiological level of TNF-α concentration can be well detected. New non-toxic fluorescent ink The Changchun Institute of Optics, Chinese Academy of Sciences developed a bio-compatible fluorescent ink based on carbon nano-dots. Carbon nanodots are a new type of carbon nanomaterials with unique advantages such as no light flicker, resistance to light drift, and no toxicity. In order to obtain carbon nanodots with fluorescent properties, it is often necessary to introduce surface passivation modifiers containing polymer chains. The dilute solution of surface-passivated carbon nanodots can exhibit strong fluorescence characteristics. However, in the aggregation state, there is a significant fluorescence quenching phenomenon, which greatly limits the application of these materials in solid-state light-emitting systems. Researchers use citric acid and urea as raw materials to produce carbon nano-dots with high fluorescence quantum efficiency. The long-term placement of aqueous solutions of carbon nanodots does not produce precipitates and exhibits fluorescence emission characteristics that are dependent on the excitation wavelength. The strongest emission wavelength is 540 nm and the fluorescence quantum efficiency is 14%. Because the surface of the carbon nano-dots contains a large amount of hydrophilic urea groups, fluorescence quenching does not occur on the surfaces of the biological products, and fluorescence quenching occurs on the surface of the inorganic materials or chemical products. The plant and animal toxicity tests showed that the prepared carbon nanodots were basically non-toxic.
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