Scientists imagine that nano-robots made in this way can advance in patients' blood stream, chase sick cells, penetrate their cell membranes and release precise and quantitative drugs, remove all harmful substances in the human body at any time, activate cell energy, and make people not only stay healthy, but also prolong their life. This robot can also remove fat and other deposits on the arterial wall. This can not only improve the elasticity of arterial wall, but also improve the blood flow of artery. Thrombosis will block the blood flow in vital parts of the human body and cause damage to important organs. Nano-robots can break these blood clots into small pieces while they are still flowing, so their harm to the body is greatly reduced. Nanorobots can also be used to remove wounds and burns. Their size makes them very useful in removing rubbish and foreign bodies near wounds, such as cuts and burns. They can do more complicated work than conventional technology, but they do little harm. Nano-robots can be used to remove other microorganisms in the human body. They are very suitable for removing some tiny parasites, repairing joints, strengthening bone tissue and removing scar tissue. It seems that they are really amazing. In addition, this micro-robot can constantly monitor all kinds of information in our body, as if we had been followed by a doctor.
AIDS is a difficult problem in medicine at present, but one day in the future, medical scientists will hand it over to a nano-robot, let these nano-robots enter the cells of human body, launch an all-round attack, completely eliminate this evil virus and save people's lives. People call it the "imperial doctor". There is a simple reason. The doctor did not operate on the patient or prescribe medicine, but injected the robot into the patient's blood. This micro-robot constantly swims in the patient's blood to catch the virus in time. As a result, the patient recovered quickly, and it is well-deserved to call the nano-robot a "doctor".
Imagine a senior engineer suffering from cerebral thrombosis in the near future. The doctor adopted a unique treatment method: he first inserted an extremely slender microcatheter into the patient's thigh, and then slowly led it to the cerebral vessels. The diagnostic laser beam on the microcatheter is like a clever and careful doctor searching carefully along the cerebral vessels. Suddenly, the diagnostic laser beam found that there was a blockage like a brain hemangioma on the way forward. At this time, the balloon on the microcatheter immediately expands automatically, and the catheter is quickly fixed, so that the therapeutic laser beam immediately "bombards" the blockage. The therapeutic effect is naturally satisfactory, which is beyond the reach of ordinary drugs at present.
The scene described above is no longer a fantasy, but nanotechnology will soon become a reality in the medical field. At present, medical experts are working hard to tackle the application of micro-robots in the medical field. The 20th century. In the early 1990s, when the micro motor made of silicon appeared, medical experts all over the world considered its various applications. A few years ago, a micro electrostatic motor with a diameter of about 0.2 mm or even an ultra-micro electrostatic motor with a smaller diameter was successfully developed, which made the technology of treating various diseases with nano-robots mature day by day. Bell Laboratories has successfully developed a micro gas turbine, which is an engine with rotating blades. It is very small and looks like a small black dot. It can only be seen clearly with the help of a microscope. However, because the subminiature motor is too small, the substance molecules trapped between its gas turbine blades are heavy enough to cause strong resistance, thus slowing down the motor speed. Even if it is slightly hit by an injection needle, it can rotate at a speed of 24000 revolutions per minute.
The integration of nanotechnology, bionics and medicine has made some brilliant achievements, such as the invention of molecular motors and the development of intelligent nano-robots based on the principle of DNA cryptography.
The combination of nanotechnology and biology will have an immeasurable impact on human life in 2 1 century. Think about the rapid development of information technology in recent 10 years. The understanding of genes by biotechnology has produced transgenic biotechnology, which can treat stubborn diseases and create creatures that do not exist in nature. Information science and technology enable people to know world events at home. The Internet has changed people's way of life like a dream. It is not difficult to imagine how the combination of nanotechnology and biology will change the face of modern medicine and agriculture. Due to the infiltration of nanotechnology into biology, our lifestyle is facing great changes.
"Nanotechnology has unlimited potential, and it will even surpass computer or gene technology and become the decisive technology in 2 1 century." This is what a famous analyst said. This sentence really embodies an important trend of scientific development in the new century.
Bionics is based on biological principles and is an important branch of biophysics. Physicists always imitate the behavior of living things to make all kinds of clever machines. Aircraft is the product of imitating birds' flight, cameras imitate eyes, and intelligent robots are the technology that scientists are keen to develop at present.
When nanotechnology permeates into bionics, its basic content is to develop micro-robots, and make some robots composed of only thousands of atoms to work in a tiny space at the cell level.
The design of micro-robot is based on the biological principle at the molecular level. In fact, the cell itself is a living nano machine, and every enzyme molecule in the cell is a living nano robot.
The conformational changes of protein molecules make different domains of enzyme molecules move like micro-robots and rearrange the atomic arrangement of related molecules. Many structural units in cells are micro-machines that perform certain functions: ribosomes are processors that arrange amino acids in order to make protein molecules according to the instructions of genetic codes; The processed protein can be transported from the membrane bubble to a certain position according to the instruction of the signal peptide to play a role; Protein, after fulfilling its functional mission, will be labeled and sent to be hydrolyzed into amino acids for reuse. The life process of a cell is a process in which groups of functionally related protein groups are constantly replaced and updated to perform their functions. All the energy needed for these life processes comes from the sun. Chloroplasts in plant leaves are processing plants that convert solar energy into chemical energy to make food; Mitochondria are workshops that release solar energy stored in energy substances to generate energy ATP (molecules that directly provide energy for life); Each of us consumes a considerable amount of ATP molecules every day to maintain life activities and busy work. All this happened in shovel 8, and it was carried out in an orderly manner according to the instructions of the genetic code sequence in DNA molecules.
Sweden has begun to manufacture micro medical robots. It is reported that this robot is made of multilayer polymers and gold, and its appearance is similar to that of a human arm. Its elbows and wrists are very flexible, with 2 ~ 4 fingers. The experiment has entered a stage where robots can pick up and move glass beads invisible to the naked eye. Scientists hope that this micro medical robot can work in blood, urine and cell media, capture and move a single cell, and become a micro II surgical instrument.
The combination of nano-exclusion technology and bionics enables biophysicists to create various micro-robots by imitating all aspects of life process. It can be predicted that machines that directly use solar energy to make food will probably appear in 2 1 century; Using nanotechnology, robots can swim in blood vessels, so as to remove the deposits on blood vessel walls and reduce the incidence of cardiovascular diseases. Nanotechnology can also be used to make robots, which can enter the interstitial space of tissues and specifically remove cancer cells. These are no longer valid.
In miniaturization, scientists not only built delicate devices as big as microorganisms, but also enabled them to move.
Researchers funded by the National Aeronautics and Space Administration (NASA) recently launched a project to turn this nano robot into reality. If the project is successful, this "ship" developed by scientists-called "nanoparticles" or "nanocapsules"-can make another science fiction story come true: manned Mars exploration and other long-term bad lives.
When researchers focus on space applications, nanoparticles also have potential value in the medical field, especially in cancer treatment. The urgent need to direct drugs to cancer cells has aroused widespread interest in the medical field, because it can avoid the side effects of chemotherapy. The function of these nanoparticles is to introduce a new treatment-in fact, to enter a single cell ... to repair them, and if the damage to the cells is too serious, kill them directly.
The projects they develop will focus on cancer-related issues-especially on the journey to the moon or Mars, when the spacecraft leaves the umbrella of the huge magnetic field around the earth, astronauts will receive high doses of radiation in space, which may lead to cancer.
Even the advanced radiation protection materials used on spacecraft can not completely isolate the astronauts' high-energy radiation in space; These high-energy cosmic rays can penetrate the astronauts' bodies like miniature bullets, and the molecules in their flight paths will be shattered. Once the DNA in cells is destroyed by radiation, cells can't work normally and sometimes become cancerous. This is an important question. If humans want to live in space, we must know how to better protect them from radiation.
Because independent protection may not solve the problem, particle scientists must find some way to make astronauts themselves resistant to radiation hazards. Nanoparticles are a first-class solution. The length of these medicine boats is only a few hundred nanometers, which is much smaller than bacteria and even shorter than the wavelength of visible light. A simple injection with a hypodermic needle can inject thousands or even millions of such blood vessels into the human blood stream. Once in the blood stream, nanoparticles can find radiation-damaged cells more effectively than ordinary cell signaling system in human body.
Trillions of human cells rely on complex molecules on the outer membrane to recognize and communicate with each other. These molecules communicate with other cells like chemical "flags", and they also play the role of chemical gates when controlling whether molecules (such as hormones) in the blood stream can pass through.
When cells are damaged by radiation, they will produce a mark on a certain protein, which will be reflected on the outer surface of cells. Cells just tell other cells, "Hey, I'm hurt." By implanting molecules on the outer surface of nanoparticles that can recognize cell markers, scientists can "set tasks" for nanoparticles and find out those cells damaged by radiation.
If the damage caused by radiation is serious, nanoparticles will enter the damaged cells and release an enzyme, which will make the cells "automatically destroy DNA sequences". Alternatively, they can release DNA repair enzymes to try to repair cells and restore their normal functions.
If this kind of nanoparticles is successfully studied, then human beings will no longer be afraid of all kinds of radiation in space, and then it will be possible to immigrate into space.