Transparent plastic is a small item that is kept by every household. It is widely used, but its role in film and television drama is still unexpected. The film “Motortal Rescue” tells the story of a fire in a 240-story building in Hong Kong. The security staff Weir relies on a bundle of ropes and a roll of tape to climb the story of a tall building to save the family. The tape in the film is a big hit, not only He completed the feat of anti-gravity flying from bottom to top again and again. Even after the injury, the wound was wrapped in a tape and punched in all directions. It was a panacea. These effects of clear plastic can not be imagined in our daily life, but don’t be too busy to exclaim “too amazing”, tape has more unexpected uses.
Tape can also be used like this
X-ray examination is a common medical diagnosis method. Basically, every inpatient should be examined. The hospital needs to use a large instrument to generate X-rays. However, scientists have found that our commonly used transparent tape can also produce X. Light!
Researchers at the University of California have done experiments in which they use a machine to pull ordinary scotch tape at a rate of 3 cm per second in a vacuum environment. Instruments placed around the tape detect a large amount of X-ray pulses on the tape. Released between the reel and the reel. When the researcher puts his finger close to the tape, the X-rays can also give him a clear image of the bone on the film, just like the X-rays we took in the hospital.
Why does the opened tape produce X-rays? Researchers believe that the principle is similar to that of a common X-ray machine and is the result of a sudden release of high-speed electron energy. When the tape is pulled apart, the electrons on the surface of the reel slammed into the adhesive side of the tape. When the impact occurred, the electron speed suddenly slowed down and X-rays were released. However, the number of these electrons is not as much as that of the instruments used in hospitals, so this phenomenon can only be detected in a vacuum environment, which is not available in our daily use.
But this discovery still surprises us. If there is enough tape, can we get cheaper X-rays? The commonly used X-ray machines now require a lot of power to provide a high-pressure environment, but the X-rays provided by the tape do not require electricity, and only require manual operation, just like the tape is pulled as we fly the kite, and the tape is cheap.
Everyone must have played the “catch the doll machine”, as long as the coin can get a chance to manipulate the metal claws to grab the doll, but have you seen the “paw” made of transparent tape? Researchers at Purdue University in the United States have done such a “paw.”
The researchers used a laser to cut the tape to one-tenth the original thickness and half a centimeter in length. When these tapes were placed in water, the thin “tape fingers” made up of four tapes turned into a tiny “paw”. This paw can catch water droplets. Why does the tape shrink into a claw when it is placed in the water? This is because the smooth side of the tape has a strong water absorption, and it will swell up when it absorbs moisture. On the contrary, it will shrink when it absorbs water, so that the tape opens into a claw that can catch water.
How do you lift the claws after catching the water? The researchers applied magnet nanoparticles to the “paws” so that they could be lifted up with magnets to get the “water dolls” they caught. “Tray Paws” do not need to provide any energy when operating. It can capture one-tenth of a milliliter of water at a time. This is helpful in laboratory studies where quantitative requirements are critical, such as water analysis. We can see the “tape claws” in the sophisticated laboratory equipment.
The stickyness of the tape not only captures the water drops, but also makes sculptures! We often see sculptures, whether they are award-winning works in the competition or sculptures on the street, which are usually carved in plastic, metal or wood, but do you know that there is also a tape sculpture competition in the United States? .
This game is called Scotch Off the Roll, which means it can be translated as “Flap off the tape” because it is a competition aimed at making sculptures with waste tape on the express package, promoting the concept of environmental protection. The competition will be held from 2011, and the first place will receive a $5,000 prize. The entries are very hard, not only the statues of the characters, but also the large buildings like the Eiffel Tower. If you have a lot of discarded tape at home, you may wish to make a sculpture craft yourself.
The Nobel Prize also has the credit for the tape.
I believe that everyone has had the experience of using tape to pick up the hair balls and hair on the clothes. This is also one of the magical uses of the tape, but do you believe that the use of the tape has also given birth to the Nobel Prize! The 2010 Nobel Prize in Physics was awarded to British scientists Gem and Novoselov who extracted graphene. In Gamm’s story, he was able to extract graphene, which was inseparable from the help of scotch tape.
Graphene is a nano-material composed of carbon atoms. Many layers of graphene are stacked as the main component of our pencil. The pencil is gently drawn across the paper, leaving traces of several layers of graphene. However, the properties of graphene are quite different from those of graphite. Graphite is very soft. Graphene has higher hardness than diamond. It is also the best known material for heat conduction and conductivity. It can manufacture high-speed transistors to make computers. More efficient.
But graphene is not good. Gem provided his students with a very high purity graphite material that was commonly used for analysis and allowed him to use a polishing machine to make the thinnest possible film. However, the results are not satisfactory, the polishing machine can only get 10 microns thick graphite sheet, and that is equivalent to the thickness of 1000 layers of graphene. But what people didn’t expect was that the problem with the advanced instruments could not be solved, but the small transparent glue did. Gem thought of a “soil method” where he glued the graphite flakes on a piece of scotch tape so that a layer of graphite was stuck to the tape. Then use a blank tape to remove the tape with the graphite layer, so that the graphite layer becomes thinner. This is repeated several times until the graphite layer on the tape is only equivalent to one carbon atom thick, and the graphite layer becomes graphene. Until now, this method and its principle are still one of the important ways to obtain graphene.
This method also brought inspiration to later generations, such as the preparation of black phosphorus. Black phosphorus is an allotrope of phosphorus and is a two-dimensional crystal formed by stacking a single layer of phosphorus atoms. The biggest difference between it and graphene is that black phosphorus is a strange semiconductor. Generally, black scales have weak conductivity, but when there is enough energy, the conductivity will advance rapidly, which means that the semiconductor can be in digital circuits. There are two states, open and closed, which can be used for data transmission of computers. Black phosphorus is also an important material for making optoelectronic devices (such as photoelectric sensors) in the future. Professor Zhang Yuanbo from Fudan University obtained the black phosphorus crystal for the first time using the tape stripping method.
Maybe there will be a more economical way to get monoatomic materials in the future, but the role of the tape in the process of obtaining graphene and black phosphorus will always be remembered.
Is the tape so amazing?
There are so many magical applications of tape, is the magic of the manufacturer? Of course not, in fact, the invention of the tape is simple and incredible.
Drew, the inventor of the tape, works at 3M, a sandpaper researcher. One day, when he sent a sample of sandpaper to a customer’s car manufacturer, he heard the problem that the worker complained about the coloring of the two colors when painting the two-color paint on the car. When one paint is good, another color is needed. When using the lacquer, use heavy sandpaper to cover the painted parts and apply another color, but when the sandpaper is removed, the rough sandpaper will wear off the fine lacquer. This question inspired Drew. He wanted to use sandpaper to block the paper, but the frosted particles on the sandpaper would damage the paint. If the sandpaper sanding material was replaced by adhesive glue, stick it to the car with such adhesive tape. The above is blocking the good paint, isn’t it not afraid of shifting and not afraid of falling paint?
However, his first attempt was not so ideal. The first tape was not very sticky. When the painter used it, it always shifted. They complained several times and asked Drew to use more glue for the tape. Don’t be so embarrassed. “It is said that the name of the tape in English has the meaning of 吝啬, it is from this. Drew was not discouraged. He experimented with everything from vegetable oil to natural gum that could be used as glue at the time. He finally selected a rubber-based synthetic glue, which was changed from sandpaper to the company’s newly invented cellophane. Finally, we have created the scotch tape we use now. Since then, scotch tape has demonstrated its unparalleled appeal, and manufacturer 3M claims to sell enough 165 laps per year.
You see, is the invention of scotch tape not complicated? However, the glue that has already been produced is combined with the cellophane to make the non-sticky cellophane sticky, and become a “bandage” that can be used to fill damaged products. Another example is a match. It is made by sticking flammable substances such as sulfur and potassium to a small wooden stick. The paper clip is just a small piece of wire made into a double-ring shape, and a spring. When it is twisted into a spiral ring from a straight wire, no one can imagine that it will gain such a strong elasticity. Now almost all mechanical bodies have it.
But how rare such a creative idea is, before these small things are invented, no one can think of them as such a huge role and vitality. Inspiration and creativity are a matter of moments, and this is something that can be met. But more important than getting inspiration is that if you are fortunate enough to get a flash of inspiration, even if your creation encounters setbacks, don’t give up easily. Sticking to your own ideas and constantly trying to improve is the ultimate magic for success.