Nanotechnology is an applied science that aims to study the design methods, composition, properties, and applications of materials and devices at the nanoscale. For example, when the ratio of surface area to volume increases dramatically, new possibilities open up for surface-based sciences such as catalysis.
Of course, this is just a brief introduction. It is not enough to understand nanometers just by this short paragraph! Next, let's take a look at the detailed introduction of nanometer with me!
The continued exploration of miniaturisation led to the creation of new tools such as atomic force microscopy and scanning tunnelling microscopy. Combined with precise procedures such as electron beam micrography, these devices will allow us to operate with precision and generate nanostructures. Nanomaterials, whether made from top to bottom (the main way to shrink a block to the nanoscale is to start from the block by cutting, etching, grinding, etc. to get the smallest possible shape (such as ultra-precision machining, where the difficulty is that the tiny structures obtained must be precise). The magic of nanotechnology lies in the quantum and surface phenomena that matter has at the nanoscale, so there can be many important applications and many interesting materials can be made.
For example, the popular nano glue on the Internet recently! It can stick to everything without leaving traces. And the feel is very magical, which is very different from other tapes.
Nanotechnology actually covers all the physical and chemical technologies and processes in the nano range, and it is not too much to say that it is all-inclusive. However, the concept is now mostly speculated in the market, many are limited to the theoretical stage of the laboratory, more realistic is the mechanical aspects of the lubricant, chemical catalysts, and the medical aspects of the fixed-point super-effective agents. Like biotechnology, nanotechnology has many environmental and safety issues (such as whether the small size will avoid the natural defence system of living things, and whether it is biodegradable, how toxic and side effects, etc.).
Advanced nanotechnology, sometimes referred to as molecular manufacturing, is used to describe nano-engineered systems (nanomachines) at the molecular scale. Countless examples demonstrate that billions of years of evolution can produce complex, stochastically optimised biological machines. In the nano field, we hope to find shortcuts to the fabrication of nanomachines using a bionic approach. However, K Eric Drexler and other researchers propose that advanced nanotechnology, while initially using bionic aids, may eventually be built on the principles of mechanical engineering.
It turns out that the origin of nanometer is so deep！