An Introduction to Nanosciences and Nanotechnology by Alain Nouailhat

By Alain Nouailhat

This booklet recollects the fundamentals required for an realizing of the nanoworld (quantum physics, molecular biology, micro and nanoelectronics) and offers examples of functions in a variety of fields: fabrics, strength, units, facts administration and existence sciences. it truly is essentially proven how the nanoworld is on the crossing element of data and innovation.Written through knowledgeable who spent a wide a part of his expert existence within the box, the name additionally offers a basic perception into the evolution of nanosciences and nanotechnologies. The reader is therefore supplied with an advent to this advanced quarter with diversified “tracks” for additional own comprehension and mirrored image. This guided and illustrated journey additionally finds the significance of the nanoworld in way of life.

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An Introduction to Nanoscience and Nanotechnology

This booklet recollects the fundamentals required for an knowing of the nanoworld (quantum physics, molecular biology, micro and nanoelectronics) and provides examples of functions in a variety of fields: fabrics, power, units, facts administration and lifestyles sciences. it really is sincerely proven how the nanoworld is on the crossing aspect of information and innovation.

Extra resources for An Introduction to Nanosciences and Nanotechnology

Example text

It is still possible for an electron to be excited if it receives enough energy to progress to a superior level, if one is available and not already occupied. This energy can be supplied by a shock, in particular by light stimulation. It is the process of atomic absorption which lets us probe the atoms in order to find out more about their different states. The reverse occurs if we remove an electron from one of the outer shells. In this case, there will be a knock-on effect leading to the source of the light.

The quantification of energy A key idea in the atomic world is that of quantification. As no two states are the same, every exchange that occurs between them must be carried out through “packets” of energy, each with a 1 Particles with half-integer spin, which are called fermions (the electron), and particles with integer spin, which are called bosons (the photon), have different quantum statistics. In particular, several bosons can simultaneously occupy the same state. Pauli’s Exclusion Principle does not apply to bosons, but is applicable to fermions.

The corpuscular concept enables us to have a better understanding of why ultraviolet rays and X-rays are dangerous. The photons which make up these rays are projectiles whose energy destroys our cells. 32 An Introduction to Nanoscience and Nanotechnology The quantum nature of the photon is used in a spectacular way in protecting confidential information. In order to ensure communication security, man has always invented very elaborate coding systems; this is known as cryptography. Unfortunately, because of the power of calculation in modern computers, the codes always end up being cracked due to the fact that they are primarily based on arithmetic.

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