Is nanotechnology harmful to the body and what is the use of nanotechnology for the human body

The "nanometer" is a unit of size, a unit of measurement of length, just like the centimeter, decimeter, and meter. It is equivalent to 4 times the size of an atom and is smaller than the length of a single bacterium.

Businessmen use the concept of nano to describe that their goods can penetrate into very small cells, but in fact, most of the goods on the market are completely unable to reach the real concept of "nano", just bluffing.

For example, this "nanotechnology cleaning of vegetable pesticide residues" actually means that their machine can wash off even the slightest pesticide residue on the surface of vegetables. But in reality, it certainly can't wash the cells of vegetables.

Maybe it's a little cleaner than the others, but anyway it's lying from the name.

The nanometer first clarified that it is a unit of length, and now the nanometer is actually a rhetorical device of reference. Just as the East Palace was used to refer to the crown prince in ancient times, nano refers to a practical nano instrument made by advanced technology. Or a means of detection, etc., which aims to emphasize the precision of such an instrument.

Because a nanometer is a very, very small unit of length. Therefore, it is very scientific to say that the vegetables with nanotechnology are clear and have less pesticide residues, because the nanometer itself is very precise, and the cleaning is more fine, and the residues that cannot be cleaned by other things are nowhere to be shielded under the nanometer order of magnitude

Nanotechnology cleans vegetables uh I haven't heard of nanotechnology Nanotechnology refers to the basic composition of materials up to the nanometer level.

I haven't heard of this technology, it's a gimmick.

Nanotechnology can make things healthier, drugs can be more powerful, they can help us, and dangerous pathologies like cancer are not a problem in the face of nanotechnology, and they can also make complex things simpler.

Biomedicine: Using nanoparticle technology to design and prepare drug (gene) delivery vehicles with multiple response functions or targets, and develop new drug dosage forms and new drugs.

Regenerative medicine: development of nanostructured materials that guide tissue regeneration and promote tissue material interface fusion, such as surface coatings for permanent implants for tissue repair and replacement, scaffolds for guiding tissue regeneration, structural permanent implants, implants** and sensors for monitoring, etc.

Surgical assistance: development of intelligent instruments and equipment, surgical robots, etc., diagnostic tools based on nano-optics and nano-electronics technology, development of genetic testing, ultra-sensitive labeling and detection technology, high-throughput and multiplex analysis technology, etc.

Medical imaging: new contrast agents based on nanoparticle technology, targeted labeling technology, understanding basic life processes: Based on nanomechanical and optical techniques such as atomic force microscopy and tunneling scanning microscopy, the process of life is studied at the molecular or atomic level.

1.Benefits of nanotechnology to the human body: In terms of theory, it comprehensively uses modern technical means such as computer technology, microelectronics, scanning tunneling microscope technology, and nuclear analysis technology to innovatively develop chaotic physics, quantum mechanics, mesoscopic physics, molecular biology, etc.

2.Nano steaming also has great benefits for the human body.

3.It can adjust the biological clock, soothe the body and mind, reduce stress, and balance the mind.

4.Accelerates blood circulation in the body, opens pores, cleans the body's internal environment, and expels dirt.

The presence of nanomaterials (materials containing nanoparticles) is not a hazard in itself, only some aspects of it are harmful, especially their mobility and enhanced reactivity, and only some aspects of some nanoparticles are harmful to living organisms or the environment are a real hazard.

In terms of carcinogenicity, as early as 2014, the International Agency for Research on Cancer (IARC) put a carbon nanotube called "MWCNT-7".

It was judged to be "probably carcinogenic to humans". Their study found that the carbon nanotubes caused lung inflammation in mice for a long time, meeting the criteria for carcinogenicity. In 2019, a study by Chinese scholars also proved that the accumulation of carbon nanotubes in the lungs will accelerate the metastasis of tumors.

The significance of nanotechnology

Nanotechnology is a highly interdisciplinary and comprehensive discipline, and the research content involves a wide range of modern science and technology. Nanotechnology.

Now it includes nanobiology, nanoelectronics, nanomaterials, nanomechanics, nanochemistry and other disciplines.

From microtechnology to nanotechnology, including microelectronics, human beings are going deeper and deeper into the microcosm, and people's level of understanding and transformation of the microcosm has been raised to an unprecedented height. Qian Xuesen, a famous scientist in China.

It has also been pointed out that the structure of nanometers left and right and below nanometers is a key point in the next stage of scientific and technological development, and it will be a technological revolution, which will cause another industrial revolution in the 21st century.

The hazards of nanoparticles, the presence of nanomaterials (materials containing nanoparticles) is not a hazard in itself. Only some aspects of it are harmful, especially their mobility and enhanced reactivity. There are only certain nanoparticles, and there are four ways for health problems nanoparticles to enter the human body:

There are also sociological risks associated with the use of social risk.

Nanotechnology is a science and technology based on the manufacture of substances at the atomic and molecular levels, and the manipulation and processing of nanoscale (generally less than 100nm) materials or devices, and its main research content is the properties and applications of materials with structural dimensions in the range of 1 to 100 nanometers.

The essential role of nanotechnology is to directly use atoms or molecules to construct products with specific functions. That is, nano-sized structures are artificially formed through nano-precision processing. The research and application of nanotechnology is mainly in the fields of materials and preparation, microelectronics and computer technology, medicine and health, aerospace and aviation, environment and energy, biotechnology and agricultural products.

Before talking about the dangers of nanotechnology, let's talk about the benefits of nanotechnology for people. First of all, nanotechnology can be used to purify water, and it can also be used for clothes, and most of our clothes now have static electricity. It is easy to get dirt and water.

Nano-material clothes don't have this problem. In terms of transportation, if nanotechnology is used in automobile tires, the wear and tear of tires can be reduced and made durable.

Then there is the danger of nanomaterials.

Nanomaterials have a greater impact on the human body than ordinary pollutants. This is because nanomaterials are very small in size, and the number of nanoparticles will be much more than microparticles at the same mass, and the chance of reacting with cells is greater, which is more likely to cause lesions. Nanomaterials are small and can enter cells almost unhindered, potentially entering the human nervous system and affecting the human brain, leading to some more serious diseases and consequences.

And nano is also easy**. Nanomaterials have abnormal properties, properties that the original substance does not have, and small particles will have. Substances that are not conductive may conduct electricity after the particles become smaller, and some substances that are not flammable may also lead to ** at the nanoscale.

Nanotechnology and nanotechnology are two different concepts and definitions.

The nanometer is just a unit of measurement and does not have any technical properties. Therefore, a simple nanomaterial cannot be called nanotechnology if it does not have special structure and performance. For example, cigarette ash powder or nano powder existing in natural soil, although they can also reach the scale of less than 100 nanometers, but because they do not have special structure and technical performance, these materials cannot be called nanotechnology.

Nanotechnology refers to the arrangement and composition of atoms and molecules on the surface of nanoparticles through specific technical design, so that they produce a special structure and show specific technical properties or functions, so that nanomaterials can be called nanotechnology.

Nanomaterials can be divided into two levels: nano-ultrafine particles and nano-solid materials. Nano ultrafine particles refer to ultrafine particles with a particle size of 1-100nm, and nano solids refer to solid materials made of nano ultrafine particles.

However, people are accustomed to controlling the length size of the composition or grain structure below 100 nanometers as nanomaterials.

Applications of nanomaterials.

At present, the continuous progress of scientific and technological research, especially in the sunrise industry of the electronics industry, nanotechnology has been greatly developed, mainly focusing on electronic composite films, using ultrafine particles to improve the electrical, magnetic and magneto-optical properties of film materials, in addition to magnetic recording, nano-sensitive materials, etc. With the increasing improvement of people's living standards, and people's attention to environmental protection has been strengthened. Air quality and industrial wastewater treatment have become a symbol of the city's quality of life.

Due to their unique surface adsorption properties, nanomaterials have great prospects for air purification and industrial wastewater treatment.

Nanomaterials are new materials developed in the mid-80s, which are 50 years more advanced than negative oxygen ions. Due to the unique structural state of nanoparticles (1-100nm), they produce small size effects, quantum size effects, surface effects, macroscopic quantum tunneling effects, etc., so that nanomaterials exhibit special functions such as light, electricity, heat, magnetism, absorption, reflection, adsorption, catalysis and biological activity. Nanomaterials have many unique functions and are used in small quantities, but they give materials unexpected high performance and high added value.

Due to the small size of nanomaterials, they are more than a thousand times smaller than the red blood cells in the blood, dozens of times smaller than bacteria, and the gas diffuses thousands of times faster than conventional materials. Nanoparticles interact strongly with biological cell membranes and easily enter cells.

At present, the research and application of nanotechnology is mainly in materials and preparation, microelectronics and computer technology, medicine and health, aerospace and aviation, environment and energy, biotechnology and agricultural products. Devices made of nanomaterials are lighter, harder, longer-lasting, less expensive and more convenient to design. The use of nanomaterials can also make materials with specific properties or materials that do not exist in nature, and make biomaterials and biomimetic materials.

Disadvantages of nanotechnology.

Some of the nanoparticles newly manufactured by engineering science may cause cancer. Nanotechnology can create and manipulate matter up to 1 nanometer in size. Researchers have found that fish develop brain cancer after ingesting small amounts of carbon nanomaterial.

Laboratory rats developed symptoms of lung disease after inhaling carbon nanotubes (tubular molecules made up of carbon atoms), as if they had inhaled asbestos particles.

The application of nanotechnology to new surveillance devices can lead to privacy breaches.

Nanoparticles are small, thousands of times smaller than cells. Due to the small size effect, quantum effect and large specific surface area, nanomaterials have special physical and chemical properties. After entering a living organism, the chemical properties and biological activities produced by their interaction with the living body are very different from conventional substances with the same chemical composition.

Previous studies have shown that some artificial nanoparticles are prone to cause inflammation of target organs at very small doses; It can easily lead to brain damage; It is easy to cause oxidative stress in the body; Easy to enter cells and even nucleus; The surface has strong adsorption and is easy to bring other substances into the cell; There is a tendency to increase the biological toxicity with the decrease of nanometer size. Slight changes in the surface lead to drastic changes in biological effects, etc.

1. It can be used for health diagnosis and treatment.

In terms of early detection, prognosis judgment and targeted companion diagnosis of cancer, the "tumor catcher" technology developed by Nano has high sensitivity.

The name Nano is of Greek origin and means "dwarf". In fact, nanometers are as long as the meter, millimeter, and micrometer that we are familiar with.

1 nanometer is equal to 10 minus 9 meters, that is, 1 billionth of a meter, which is smaller than the length of a single bacterium, and is invisible to the naked eye", said researcher Wang Chen, chief scientist of the nano project, "nano itself is only a measurement length, and the real value is nanotechnology, which is a science and technology that studies the properties and applications of materials with structural dimensions in the range of 1 nanometer to 100 nanometers." ”