What do you mean by nano science and nano world?

Nanoscience and technology is to study the movement and changes of atoms, molecules and other types of substances in the range of one millionth of a meter (10-8) to one millionth of a meter (10-9). At the same time, manipulating and processing atoms and molecules in this scale range is also called nanotechnology.

The research content of nanotechnology is to create and prepare nano-materials with excellent performance.

Design and prepare various nano-devices and devices.

Detect and analyze the characteristics and phenomena of nano-regions

What is nano? Nanometer is a measure of size or size:

Kilometer (103 )→ meter → centimeter → millimeter → micron → nanometer (10-9)

Four times the size of an atom and one tenth the thickness of a hair. What is wrong with nanotechnology? Biotechnology, information technology and nanotechnology are the mainstream of scientific and technological development in the next century. Biotechnology's understanding of genes has produced transgenic biotechnology, which can treat stubborn diseases and create creatures that do not exist in nature. Information technology enables people to know world events at home, and the Internet can almost change people's lifestyle. Nanoscience is to study the movement and changes of atoms, molecules and other types of substances in the range from one millionth of a meter (10-8) to one millionth of a meter (10-9). At the same time, manipulating and processing atoms and molecules in this scale range is also called nanotechnology. Reductionism: Simplify the motion of matter to the level of atoms and molecules. Both atomism and quantum mechanics have achieved great success. Organic synthesis; Molecular biology; Genetically modified food, cloned sheep; Atomic spectrum and laser; Solid-state electronic theory and integrated circuits; Geometrical optics to optical fiber communication. The great achievements of classical physics, chemistry and mechanics in the macro world: computers and networks, spaceships, airplanes, automobiles and robots have changed people's lifestyles, and there are scientific and technological blind spots or cracks in the construction of human knowledge. One side of the crack is the micro-world with atoms and molecules as the main body, and the other side is the macro-world of human activities. There is no direct and simple connection between the two worlds, and there is a transitional zone-the nano-world. Example: molecular synthesis ≤ 1.5 nm → in vivo

0.2μm microelectronics technology,

Microsurgery can only connect large, small and microvascular.

≤ PM 10 and PM 1.5 particles

When dozens of atoms and molecules or thousands of atoms and molecules are "combined" together, they show different properties from single atoms and molecules, and also different from the properties of a large object. This "combination" is called "supramolecule" or "artificial molecule". The melting point, magnetism, capacitance, conductivity, luminescent dyeing, color and water solubility of supramolecules have all changed greatly. When "supramolecules" continue to grow up, or gather into large pieces of matter in the usual way, they will lose strange properties, such as children who don't grow up. At the scale of 10nm, the understanding of new laws in the system composed of a few electrons, atoms or molecules and how to manipulate or combine them, detect and apply them are the main problems of nanotechnology. New phenomena and new laws in the transition zone between the micro-world and the macro-world of atoms and molecules

New principles and methods for detecting nano-length physical, chemical and biological information

New concepts and theories: quantum systems with strong correlation, strong field, fast process and few particles

Apply new science or copy the old theory? New technology with a long history

Bronze mirrors and black lacquered drums in the Western Han Dynasty

Huizhou ink

paint

Catalyst material

Photosensitive materials and color films

Tyre containing kaolin particles

Why? vague

Nearly ten years, computer and material design; Detection technology STM, AFM, SNOM；; ; Promoting integrated circuits and life sciences; Development of preparation technology; Development of theory

High strength, toughness, self-healing, intelligence and renewability → Why does small size have such an important influence on the new generation of nanomaterials? surface effect

small size effect

The research goal and possible application materials and preparation of quantum confinement effect: lighter, stronger and designable; Long service life and low maintenance cost; Constructing materials with specific properties or materials that do not exist in nature at the nanometer level with new principles and new structures; Biological materials and bionic materials; Diagnosis and repair of nanometer damage in the process of material failure; Microelectronics and Computer Technology: Chip with 100nm line realized in 20 10 years. The goal of nanotechnology is: the microprocessor with nano-structure will improve its efficiency by one million times; 10 times the bandwidth of high frequency network system; Megabit memory (increased by 1000 times); Integrated nano-sensor system; Medicine and health

Rapid and efficient genome sequencing, gene diagnosis and gene therapy technology; New medication methods and drug "missile" technology; Durable and human-friendly artificial tissues and organs; Devices to restore vision and intelligence; Nanosensor system for early diagnosis of diseases

Computers with low energy consumption, radiation resistance and high performance; Nano-test, control and electronic equipment for micro spacecraft; Environment and Energy of Thermal Barrier Wear-resistant Nanostructured Coating Materials

Develop green energy and environmental treatment technology, reduce pollution and restore the damaged environment;

Nano-porous material with pore size of 65438±0nm is used as the carrier of the catalyst; MCM-4 1 ordered nanoporous material (pore size 10- 100nm) is used to remove dirt; Biotechnology and agriculture of nano-particle modified polymer materials

On the nanometer scale, protein, ribose, nucleic acid, etc. Everything with biological activity is prepared according to the predetermined size, symmetry and arrangement. Implanting biomaterials into nano-materials and devices produces comprehensive properties with biological functions and other functions. Biomimetic chemicals and biodegradable materials, gene improvement and treatment of animals and plants, gene chips for DNA determination, etc.