ArulmiguMeenakshi Amman College of Engineering
Vadamavandal-604410.
Important questions and answers
OCH351- NANO TECHNOLOGY
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
INTRODUCTION
2 – marks question and answers
1.1. Define Nanotechnology.
2. The branch of technology that deals with dimensions and tolerances of less than 100 nanometres, especially
the manipulation of individual atoms and molecules.
2. What is the concept of nanotechnology?
Nanotechnology involves manipulating atoms and molecules to give structures new chemical and physical
properties. Nanotechnology devices have a wide range of applications, such as electronics, medicine, energy,
textiles and more.
3. What are three examples of nanotechnology?
Electronics. Carbon nanotubes are close to replacing silicon as a material for making smaller, faster and more
efficient microchips and devices, as well as lighter, more conductive and stronger quantum nanowires.
Energy.
Biomedicine.
, Environment.
Food.
Textile.
4. What are the five applications of nanotechnology?
Nanomaterials. Advancements in nanotechnology have led to the development of nanomaterials that are used
across day-to-day applications, from fabrics, cosmetics, and sportswear, to camera displays and eyewear.
Medicine.
Food industry.
Electronics sector.
Energy space.
Environment.
5. What is the nano size effect?
Nanoscale dimensions can, in certain cases, enhance physical and chemical properties, and this enhancement
can originate from various sources such as increased surface area, confinement effects, etc.
6. What are nano structured materials?
Nanostructured Materials (NsM) are materials with a microstructure the characteristic length scale of which
is on the order of a few (typically 1–10) nanometers. NsM may be in or far away from thermodynamic
equilibrium. NsM synthesized by supramolecular chemistry are examples of NsM in thermodynamic
equilibrium.
7. What are nano materials and why are they important?
Nanomaterials have a very high surface area to volume ratio, meaning that a large proportion of their atoms
are on the surface of the material. This presents significant advantages for applications like catalysis, because
the active sites of catalysts all exist at the surface of the material.
,8. What is the importance of nanoparticles?
The significance of nanomaterials lies in their potential to transform numerous fields, such as electronics,
energy, and medicine, through the provision of improved performance characteristics. Nanomaterials can
facilitate the creation of small-scale products and processes at the nanoscale.
9. Why are nanomaterials important?
Nanomaterials can also be added to cement, cloth and other materials to make them stronger and yet lighter.
Their size makes them extremely useful in electronics, and they can also be used in environmental
remediation or clean-up to bind with and neutralize toxins.
10. What are nanomaterials and its importance?
Nanomaterials are a class of materials where the individual units have at least one dimension below 100
nanometers. They can be made of any element and are commonly classed into organic (carbon based),
inorganic (non-carbon based), and hybrid (which combine the two) materials.
13 and 15 marks question and answers
11.
Briefly explain Important Nano structured materials.
, In nanotechnology, several types of nanomaterials are crucial due to their unique properties and potential
applications. These include carbon-based materials like graphene and carbon nanotubes, metal-based
nanomaterials such as quantum dots, and organic-based nanostructures like dendrimers. These materials, with
dimensions ranging from 1 to 100 nanometers, exhibit size-dependent properties and are utilized in diverse
fields like electronics, medicine, and materials science.
Key Nanomaterials and Their Applications:
Carbon-based Nanomaterials:
Graphene: A two-dimensional sheet of carbon atoms with exceptional strength, conductivity, and
flexibility, finding applications in electronics, sensors, and energy storage.
Carbon Nanotubes (CNTs): Cylindrical structures with unique mechanical and electrical properties, used
in reinforced composites, sensors, and drug delivery systems.
Fullerenes: Spherical or ellipsoidal carbon molecules with potential applications in drug delivery,
materials science, and catalysis.
Vadamavandal-604410.
Important questions and answers
OCH351- NANO TECHNOLOGY
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
INTRODUCTION
2 – marks question and answers
1.1. Define Nanotechnology.
2. The branch of technology that deals with dimensions and tolerances of less than 100 nanometres, especially
the manipulation of individual atoms and molecules.
2. What is the concept of nanotechnology?
Nanotechnology involves manipulating atoms and molecules to give structures new chemical and physical
properties. Nanotechnology devices have a wide range of applications, such as electronics, medicine, energy,
textiles and more.
3. What are three examples of nanotechnology?
Electronics. Carbon nanotubes are close to replacing silicon as a material for making smaller, faster and more
efficient microchips and devices, as well as lighter, more conductive and stronger quantum nanowires.
Energy.
Biomedicine.
, Environment.
Food.
Textile.
4. What are the five applications of nanotechnology?
Nanomaterials. Advancements in nanotechnology have led to the development of nanomaterials that are used
across day-to-day applications, from fabrics, cosmetics, and sportswear, to camera displays and eyewear.
Medicine.
Food industry.
Electronics sector.
Energy space.
Environment.
5. What is the nano size effect?
Nanoscale dimensions can, in certain cases, enhance physical and chemical properties, and this enhancement
can originate from various sources such as increased surface area, confinement effects, etc.
6. What are nano structured materials?
Nanostructured Materials (NsM) are materials with a microstructure the characteristic length scale of which
is on the order of a few (typically 1–10) nanometers. NsM may be in or far away from thermodynamic
equilibrium. NsM synthesized by supramolecular chemistry are examples of NsM in thermodynamic
equilibrium.
7. What are nano materials and why are they important?
Nanomaterials have a very high surface area to volume ratio, meaning that a large proportion of their atoms
are on the surface of the material. This presents significant advantages for applications like catalysis, because
the active sites of catalysts all exist at the surface of the material.
,8. What is the importance of nanoparticles?
The significance of nanomaterials lies in their potential to transform numerous fields, such as electronics,
energy, and medicine, through the provision of improved performance characteristics. Nanomaterials can
facilitate the creation of small-scale products and processes at the nanoscale.
9. Why are nanomaterials important?
Nanomaterials can also be added to cement, cloth and other materials to make them stronger and yet lighter.
Their size makes them extremely useful in electronics, and they can also be used in environmental
remediation or clean-up to bind with and neutralize toxins.
10. What are nanomaterials and its importance?
Nanomaterials are a class of materials where the individual units have at least one dimension below 100
nanometers. They can be made of any element and are commonly classed into organic (carbon based),
inorganic (non-carbon based), and hybrid (which combine the two) materials.
13 and 15 marks question and answers
11.
Briefly explain Important Nano structured materials.
, In nanotechnology, several types of nanomaterials are crucial due to their unique properties and potential
applications. These include carbon-based materials like graphene and carbon nanotubes, metal-based
nanomaterials such as quantum dots, and organic-based nanostructures like dendrimers. These materials, with
dimensions ranging from 1 to 100 nanometers, exhibit size-dependent properties and are utilized in diverse
fields like electronics, medicine, and materials science.
Key Nanomaterials and Their Applications:
Carbon-based Nanomaterials:
Graphene: A two-dimensional sheet of carbon atoms with exceptional strength, conductivity, and
flexibility, finding applications in electronics, sensors, and energy storage.
Carbon Nanotubes (CNTs): Cylindrical structures with unique mechanical and electrical properties, used
in reinforced composites, sensors, and drug delivery systems.
Fullerenes: Spherical or ellipsoidal carbon molecules with potential applications in drug delivery,
materials science, and catalysis.
