Introduction to Nanotechnology

1. ________ is the average size of the red blood cells?

• 4000 nm

• 3000 nm

• 5000 nm

• 7000 nm

Which one or many of the following best suit the quantum confinement effect?

• Quantum confinement is the spatial confinement of electrons in one or more dimensions within a material

• They do not possess size dependent properties

• Electronic energy levels become discrete

• Quantum dots

• They do not obey classical mechanics

Define a super capacitor using the following options (Select multiple options if they apply)

• It is an energy storage device

• Stores energy in the form of charges from an electrolyte solution

• A separator is used to separate anodic and cathodic components

• Electrostatic double layer capacitors

The following figure represents

• Absorption

• stimulated emission

• Spontaneous emission

• transmission

Biomaterial Interface Processes helps to

• improve the characteristics of the biomaterial

• protect the structure

• reduce pain

• make it adopt to the biological environment

the nanomaterials with quantum confinement in 2D are

• 0D

• 3D

• 1D

• 2D

What is nanotechnology?

• Study and manipulation of technology that is micro sized

• Study and manipulation of matter that is small but can still be seen by the human eyes

• Study and manipulation of matter at a scale of 1-100 nano meters

• Study and manipulation of matter that moves at a speed measured in nano seconds

What is a buckyball?

• A carbon atom (C60)
• Nickname for Mercedes-Benz's futuristic concept car (C111)
• Plastic explosives nanoparticle (C4)
• Concrete nanoparticle with a compressive strength of 20 nanonewtons (C20)

TEM uses ----- electrons

• back scattered

• transmission electrons

• secondary electrons

• primary electrons

The properties of nanoparticles like melting point, solubility, color, etc changes on varying the

• Size

• Composition

• Surface proeperties

• none of the above