Nanotechnology is the scientific study and manipulation of materials at the nanoscale, specifically between 1 to 100 nanometers. It enables the creation of new materials and devices with unique properties, playing a critical role in medicine, electronics, and energy. Nanomaterials, defined by their structural components at nanoscale, exhibit enhanced physical and chemical properties, leading to a wide range of applications.

1. NANOTECHNOLOGY
Dr.Suhad A.Yasin

3. Nanotechnology is the study of extremely small structures.
The prefix “nano” is a Greek word which means “dwarf ”.
The word “nano” means very small.
Nanotechnology deals with materials in the size of (0.1 to 100 nm).
Nanotechnology works on matter at dimensions in the nanometer scale
length (1-100 nm), and thus can be used for a broad range of
applications.

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6. Applications and Possibilities

9. How Small Can We See?

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Nanotechnology :
is the science and engineering of manipulating matter at
the atomic or molecular scale, typically between 1 and 100
nanometers, to create new materials, devices, and systems
with unique properties and functions. At this nanoscale,
materials often exhibit different physical, chemical, and
biological properties compared to their larger-scale
counterparts, enabling innovations in various fields such
as medicine, electronics, energy, and materials science.

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Nanomaterials :
are materials with structural components that have
at least one dimension in the nanometer scale (1 to
100 nanometers). Due to their extremely small size,
nanomaterials often exhibit unique physical,
chemical, mechanical, and optical properties that
differ significantly from those of bulk materials.
These enhanced properties make nanomaterials
valuable for a wide range of applications, including in
medicine, electronics, energy storage, environmental
protection, and more.

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Classification of nanomaterials' based on the structural
configuration

13. History of Nanotechnology

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Father of Nanotechnology

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 In general, nanomaterials are materials whose
external dimensions are in the nanoscale (usually
1–100 nm) or those who have a nanoscale internal
structure/surface.
What is a nanometer?
 A nanometer is one billionth of a meter.
 The prefix “nano” means “one billionth”, or 10-9, in the
international system for units of weights and
measures.
 The abbreviation for nanometer is "nm."

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 Definition of Nanotechnology is given by the US National
Nanotechnology Initiative (NNI) as:
(i) Research and technology development at the atomic, molecular or
macromolecular levels, approximately 1–100 nano-meters in length.
(ii) Creation and use of structures, devices, and systems that have novel
properties and functions because of their small and intermediate
size.
(iii) Ability to control or manipulate on the atomic scale.

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How small is the nanoscale? Here are a few comparisons:

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Research on nanomaterials is driven by two motivating
factors:
1)They exhibit interesting properties at nanometer size
scale which is different from bulk material and
2) Applications of these properties in devices

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Picture representing the relative size of the various naturally occurring objects/species and artificial
materials

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