Nanotechnology Questions
Nanotechnology Knowledge Quiz
Test your understanding of nanotechnology concepts with this engaging quiz! From nanoparticles to quantum effects, challenge yourself to see how well you know the properties and applications of materials at the nanoscale.
Whether you're a student or a professional, this quiz is designed to enhance your knowledge.
- Topics covered: Nanoparticles, Nanowires, Processes in Nanotechnology
- Multiple-choice and checkbox questions
- Fun and informative!
Nano particle is a material that has three dimensions less than 100 nm
True
False
Nano filler are added to the material to inhibit thermal conductivity and mechanical strength
True
False
The properties of nanoscale materials differ from the properties of the same materials in bulk size due to decrease relative surface area and quantum effect
True
False
** Nanomaterials can be classified into three main categories ...... , ...... , ......
Nanoparticle
Nanowire
Nanoplate
** The properties of nanoscale materials differ from the properties of the same materials in bulk size due to ...... , ......
Increase surface area
Quantum effect
** The influence quantum effect can change essential material characteristics such as ...... , ...... , ...... properties
Optical
Electrical
Biological
** Nano fillers such as ...... Are added to the materials to improve their properties
Carbon nanotubes
Naturally occurred nanoparticles ......
Welding Fumes
Mineral composites
Cooking smoke
Diesel exhaust
Natural origin nanoparticles ......
Sea spray
Mineral composites
Volcanic ash
All of the above
You are asked to produce thin film, the simplest process you can use will be ......
Laser ablation
Ball milling
Wire explosion
Sputtering
...... is ...... Process in which, materials are deposited onto a particular surface by ejected atoms from that material
Laser ablation, PVD
Sputtering, CVD
Wire explosion, CVD
Sputtering, PVD
...... Exchange between atoms and ions of the element causes sputtering
Quantum
Momentum
Electrical
Electron
A top-down techniques widely used to produce porous nanostructures with controlled porosity
Sputtering
Sol-gel
Thermal ablation
Ball milling
Chemical technique that utilized chemical forces such as ......, precipitation and hydrothermal
Sol-gel
Sputtering
Laser ablation
Micro-organism
Formation of nanoparticles from atoms and molecules is ...... Manufactured process
Top-down
Physical
Bottom-up
Micro-organism
You are asked to craft nanoscale pattern, the simplest process you can use will be ......
Laser ablation
Ball milling
Etching
Sputtering
You are asked to synthesize metal nanoparticles with high throughput rate, the simplest process you can use will be ......
Laser ablation
Ball milling
Selective de alloying
Wire explosion
You are asked to synthesize nano-porous metal plate, the simplest process you can use will be ......
Laser ablation
Ball milling
Selective de alloying
Wire explosion
Pulse duration must be ...... to ...... The peak power and to ...... The thermal conduction to the surrounding material
Small, minimize, maximize
High, maximize, minimize
Small, maximize, minimize
High, minimize, maximize
Formation of nanoparticles from bulk material is ...... Manufactured process
Top-down
Physical
Bottom-up
Micro-organism
...... Is a process of removing material from a solid surface by irradiating it with a laser beam
Laser ablation
Ball milling
Selective de alloying
Wire explosion
The energy transfer to the powder from steel balls depends on ......
The rotation speed
Size and number of balls
Time of the milling
All of the above
When a high electrical current passes through a metal wire with a high voltage, the metal wire ......
Explodes
Vibrates
Evaporates
A,c
There are many advantages of the wire explosion such as ......
High throughput rate
Simplicity
A,b
None of the above
At ...... Laser flux, the material is heated by absorbing laser energy and evaporates or ......
High, sublimates
Low, plasma
Low, sublimates
High, plasma
Ball milling technique represents top-down synthesis approach of nanomaterial
True
False
The sputtering process is a chemical vapor deposition process in which, materials are deposited onto a particular surface by ejecting atoms from that material
True
False
Thermal decomposition is the process that employs heat to dissociate chemical bonds in a material
True
False
Thermal ablation is a process that uses for creating porous nanostructure with controlled porosity
True
False
The ball milling technique, the energy transfer to the powder from steel balls depend only on: The time of milling
True
False
The synthesis method is ...... / Top-down or Bottom up
The synthesis method is ...... / Mention two advantages of this process
The synthesis method is ...... / Top-down or Bottom up
The synthesis method is ...... / This process depend on several parameter such as ......
...... Is a formation of a thin film on the substrate surface through an activate chemical reaction between the substrate surface and a gaseous precursor. While ...... Is process in which, materials are deposited onto a particular surface by ejecting atoms from that material and condenses ejected atoms onto the surface under high vacuum environment
PVD, CVD
CVD, PVD
Sol-gel, PVD
None of the above
Bottom-up technique wide used to produce carbon nanotubes ......
Etching
Chemical vapor deposition
Sol-gel
Biological synthesis
CVD is suitable when has ......
Along shelf-life
low chemical purity
Hazardous nature
All of the above
Plasma significantly ...... The process temperature compared to the thermal CVD process
Increases
Decreases
Not change
None of the above
In the CVD, the vapor based processes can be classified in activation can be achieved either with ......
Temperature
Plasma
Oxidation
All of the above
CVD is suitable when has the following except ......
Low cost
Adequate volatility
A short shelf-life
High chemical purity
The method technique in Figure1 is ......
Wire explosion
Chemical vapor deposition
Etching
Laser ablation
The parte 1 in Figure1 is ......
N2 gas
Plasma
Substrate
None of the above
Physical vapor deposition is a Bottom-up technique wide and is used to produce carbon nanotubes
True
False
CVD is a formation of a thin film on the substrate surface through an inhibit chemical reaction between the substrate surface and a gaseous precursor
True
False
CVD is suitable when has good stability during evaporation
True
False
Nano material characterization ......
Wetability
Size
Agglomeration
All of the above
Electron microscope is always used ...... lens
Optical
Electric
Magnetic
None of the above
...... Is based on scattered electrons while ...... Is based on transmitted electrons
AFM, SEM
TEM, SEM
SEM, TEM
SEM, AFM
...... Is based on scattered electrons while ...... Is based on reflected laser
AFM, SEM
TEM, SEM
SEM, TEM
SEM, AFM
Optical microscope uses ...... Lens while electron microscope uses ...... lens
Electric, magnetic
Optical, magnetic
Optical, electric
Non of the above
The basic principle is that a beam of electrons is generated by a suitable source such as ......
Emission gun
Tungsten filament
A, B
Non of the above
SEM is used in several applications such as ......
The shape and size of the particles
The surface features of an object
Crystallographic information
All of the above
SEM is used in several applications such as ......
The surface features of an object
Roughness
Identify unknown materials
All of the above
The sample in ...... Has to be cut thinner whereas there is no such need with ...... sample
AFM, SEM
TEM, SEM
SEM, TEM
TEM, AFM
...... Allows for large amount of sample to be analyzed at a time
TEM
FT-IR
SEM
AFM
...... Has much resolution than ......
SEM, TEM
AFM, SEM
TEM, SEM
SEM, AFM
Infrared radiation lies between the visible and ...... Portions of the electromagnetic spectrum
Ultraviolet
Radio waves
Microwaves
X-rays
Infrared waves have frequencies which are ...... Than visible and ...... Than microwaves
Higher, lower
Lower, equal
Lower, higher
Equal, higher
The reflected laser beam in AFM is tracked by ...... That picks up the vertical and lateral motion of the probe
PSDF
PSPD
PFPD
PSDP
The ...... Laser beam in AFM is tracked by PSPD that picks up the vertical and lateral motion of the probe
Absorbed
Reflected
Transmitted
None of the above
There are different imaging modes of AFM which are ......
Static mode
Dynamic mode
Tapping mode
All of the above
Molecular vibration takes place because of absorption of IR radiation when applied infrared frequency = ......
Absorbed spectrum
Body transmitted microwaves
Natural frequency of vibrations
None of the above
...... Offer most powerful magnification, potentially over one million times or more
SEM
SEM
TEM
FT-IR
All the following are considered surface properties of nanomaterials except ......
Topography
Porosity
Morphology
Wetability
The elements and compounds that the object contains and the relative amounts of them is called ......
Topography
Crystallographic information
Composition
Morphology
The A, B in Figure (1) are ......
Secondary and absorbed electrons
Back scattering and absorbed electrons
Back scattering and secondary electrons
None of the above
The primary source of infrared radiation is thermal radiation
True
False
Infrared radiation lies between the visible and radio waves portions of the electromagnetic spectrum
True
False
The higher the pressure, the more the atoms and molecules move and the more infrared radiation they produce
True
False
The absorbed laser beam in AFM is tracked by PSPD that picks up the vertical and lateral motion of the probe
True
False
One of the disadvantages of TEMS are ability to yield information of surface features, shape, size, and structures
True
False
One of the major downsides of SEM is the single scan image size, which of the order of 150 x150 micrometers
True
False
One of the advantages of TEM are its images are high quality and detailed
True
False
Nano-fillers are added to the nanofibers to improve
Thermal conductivity
Mechanical strength
Electrical conductivity
All of these
...... Is used to fabricate nanofibers
AFM
Spin coating
Electrospinner
Electrospraying
Nano-fillers such as ...... Are added to the nanofibers to improve their properties
PVA
PES
AL2O3
All of these
Drug delivery with polymer nanofibers is based on the principle that dissolution rate of a drug particulate ...... With increased surface area of both the drug and the corresponding
Decreased
Increased
Constant
Non of the above
Therapeutic drugs incorporate into nanofibers by ...... The drug into the polymer solution to be spun
Precipitating
Solubilizing
A, B
Non of the above
Drugs can be loaded on nanofibers by ......
Chemically entrapped
Chemically bond
Physically absorbed
All of these
Tissue engineering often involves the use of ...... Placed on tissue scaffold in the formation of new viable tissue for a medical purpose
Blood
Bones
Cells
Skin
Ceramic, synthetic, and natural polymers act as ......
Cells
Scaffold
Regulatory signals
Antimicrobial
Cells attach and migrate into ...... Which supports cell growth, proliferation and matrix deposition
Regulatory signals
Antimicrobial
Scaffold
A,B
...... Is used to induce cell differentation and tissue formation
Cells
Scaffold
Regulatory signals
Antimicrobial
...... Incorporated electrospun nanofibrous membranes can offer a very promising efficiency in removal of such pollutants
Surfactants
Polymers
Antimicrobial agents
A,C
...... Act as good anti microbial to the water membranes
Titanium dioxid
Silver salts
A,B
TIO3
The driving force of the membrane distillation process is given by ......
Surface tension
Electrostatic
Partial vapor pressure difference
The driving force of the membrane distillation process is given by partial vapor pressure difference commonly triggered by ...... difference
Pressure
Temperature
Humidity
Concentration
Membrane distillation is used for treating slain and waste water by using ...... membrane
Hydrophilic
Polytropic
Hydrophobic
Hyperbolic
In membrane distillation, membrane displays a barrier allowing the ...... To pass through the membrane's pores
Water
Salt
Vapor
All of them
Membrane distillation has many advantages such as ......
High fouling phenomena
High working pressure
Not complex process
High energy consumption
When you drip water onto ...... surface , it will spread out evenly when it hits the surface
Hydrophilic
Polytropic
Hydrophobic
Hyperbolic
The main concept of electrospinning process consist of a low voltage power supply, a polymer solution in a syringe and collector
True
False
Nanofibers exhibit special properties due to low surface area to weight ratio compared to conventional fibers
True
False
Active substance such as drug can be loaded on the nanofibers by physically entrapped or chemically absorbed
True
False
Tissue engineering involves the use of regulatory signals as scaffold to support cell growth
True
False
In membrane distillation, membrane displays a barrier allowing the water to pass through the membrane's pores
True
False
Membrane distillation is used for treating slain and waste water by using hydrophilic membrane
True
False
Membrane distillation has many disadvantages such as low energy consumption and low working pressure
True
False
Tissue engineering often involves the use of skin placed on tissue scaffold in the formation of new viable tissue for a medical purpose
True
False
Membrane distillation has many advantages such as low fouling phenomena
True
False
Ceramic, synthetic, and natural polymers act as Scaffold
True
False
The MEMS technology is considered to be an extended form of traditional ...... manufacturing
Mechanical circuit
Thermal circuit
Integrated circuit
Electrical circuit
MEMS is a technique of combining ...... And mechanical components together on a chip
Thermal
Magnetic
Electrical
Optical
...... May have moving parts
IC
MEMS
MF
A,B
...... Has transistor as basic building block
IC
MEMS
MF
A,B
...... Is a process in which a material is removed from a target, and deposited on a surface
Chemical deposition
Physical deposition
Laser ablation
Sol-gel
Lithography is a widely used ...... process
Deposition
Etching
Pattering
None of them
Examples of lithography are ......
Ion beam lithography
X-ray lithography
Photolithography
All of them
...... Is the process of using strong acid to cut the unprotected parts of a metal surface to create a design
Sputtering
CVD
Etching
PVD
...... Is a device distinguishes cancerous from non-cancerous cells thus aiding the surgeons in operations
Smart pill
Sight for the blind
Biocavity laser
Gyroscope
...... Is a device which receives and responds to a signals when touched
Gyroscope
Bioactivity laser
Sensors
Smart bill
Sensors is used to measure a physical quantity and converted it into a ...... signals
Digital
Analog
Electrical
All of them
Commonly sensed parameters in sensors are ......
Pathogens
Radiations
Flow rate
All of them
MEMS have many advantages such as ......
Farm established requires huge investments
Design includes very much complex procedure
Improved reproducibility
All of them
There are two classes of etching process which are ...... etching
hot and cold
Wet and dry
Top and down
Deep and shallow
During etching process, the crafted nanoscale pattern is revealed ...... Removing the template
Before
After
Within
All of them
MEMS is used in medical science to make small devices such as ......
Bio-cavity laser
Smart pill
Sight for the blind
All of them
MEMS is a technique of combining electrical and mechanical components together on a chip
True
False
Physical deposition is a process which a stream of source of gas reacts on the substrate to grow the material desired
True
False
Etching is the process of using weak acid to cut the unprotected parts of a metal surface to create a design
True
False
A micro sensors reaches a significantly lower speed and sensitivity compared with microscopic approaches
True
False
The advantages of MEMS in sensors field are cheaper due to mass production and smaller in size
True
False
MEMS is used in medical science to make small devices that can be implanted in the human body
True
False
The plasma is created by using high frequency voltage to can ionize the low pressure gas
True
False
Electrospinning is a fiber production method which uses magnetic force to draw charged threats of polymer solution
True
False
Static modes use for hard and solid samples but dynamic modes use for biology and soft samples
True
False
Plasma can enhance the performance of solar cells
True
False
In spin coating the substrate is rotated at high speed up and spread the coating material by electrical force
True
False
The absorbed laser beam of the AFM is tracked by PSPD that picks up the lateral and vertical motion of the probe
True
False
Plasma cleaning used in microchips fabrication by inhibiting the polymer surface with plasma
True
False
There are many solutions parameters which effect on nanofibers such as molecular weight, voltage, surface tension and conductivity surface charge density
True
False
** The AFM helps to detect cancer cells by determining the ...... Value of the cells
Stiffness
Hardness
** When the molecular cohesion of the liquid is sufficiently high, the droplets are ......
Electrosprayed
** There are many parameters of solutions effect on the nanofiber such as ...... , ...... , ...... , ...... , ......
Concentration
Molecular Weight
Viscosity
Surface Tension
Conductivity
Surface Charge Density
** A stream of liquid erupts from the surface in the electrospinning at critical point, known as ......
Taylor cone
** ...(1)... It has a sharp tip on its edge and made from ...(2)... or ...(3)...
(1) Cantilever
(2) Silicon
(3) Silicon nitride
** ...... Is a simplified model that describes the interaction between atoms or molecules based on their distance of separation
Lennard jones potential
** Plasma cleaning used in ...... By activating the polymer surface with plasma
Microchips fabrication
** The reflected laser beam of the AFM is tracked by ...(1)... That picks up ...(2)... and ...(3)... Motion of the probe
(1) Position sensitive photo detector (PSPD)
(2) Lateral OR side to side
(3) Vertical OR up to down
** The thickness of the film which is formed by spin coating depends on ...(1)... , ...(2)... Of the solution
(1) Concentration
(2) Viscosity
** When the body of the liquid becomes charged in the electrospinner, the electrostatic repulsion counteracts ...... And then makes the droplet is stretched
Surface Tension
** Mention applications of spin coating ......
Coating of mechanical surfaces
Membrane fabrication
Spin drying and cleaning
It is used intensively in photolithography, to deposit layers of photoresist about 1 micrometer thick
Microfluidic devices can be used to obtain a variety of interesting measurements including enzyme reaction kinetics
True
False
Nanofiber exhibit special properties due to extremely low weight to surface ratio compared to conventional fibers
True
False
The main concept of electrostatic process consists of a high-voltage power supply, a polymer solution in a syringe, a needle and a flat or drum collector
True
False
In drug loading, active substances can be incorporated inside the nanofibers, physically adsorbed, or chemically bound to the surface
True
False
Thermolysis provides a simple one-step strategy for creating ……
Porous nanostructures
Carbon nanotubes
Nanofibers
Thin sheets
Human Origin Nanoparticles (Incidental): ......
Sea Spray
Mineral Composites
Volcanic Ash
Diesel Exhaust
Formation of nanoparticles using Sol-gel method is …… manutacturing process
Top-Down
Bottom-Up
Physical
Micro-organisms
Unlike other technologies, …… does not require either a vacuum or the sample to undergo treatment that might damage It
SEM
TEM
AFM
None of them
In laser ablation process, one of the laser parameters that will influence the process is ……
Wavelength
Ambient gas
Sample properties
Electrical potential
In laser ablation, at high laser flux, the material is typically converted to ……
Electromagnetic waves
Vapor
Plasma
Heat
�… is a widely studied technique to fabricate carbon nanotubes
Chemical vapor deposition
Sputtering
Thermal ablation
Etching
The wire explosion process is appropriate for mass production in industry as it has many advantages, including:
Selectivity
High production speed
Low throughput rate
All of them
Nanoengineering is the application of nanoscience to fabricate ……
Nanomaterials
Mineral composites
Devices and products
Formation of nanoparticles using colloidal dispersion is …… manutacturing process
Top-Down
Bottom-Up
Physical
Micro-organisms
Centrifuge is used for the separation of gas or liquid based on ......
Solubility
Absorbed Spectrum
Density
None of the above
Membrane distillation has many advantages such as low energy consumption and low working pressure
True
False
Nanoparticles can exhibit significantly different electrical and thermal properties to their larger material counterparts
True
False
Blological technique that utilized biomaterials such as bacteria and micro-organisms
True
False
Nano-fillers such as ...... Are added to the nanofibers to improve their properties
Carbon nanotubes
Titanium dioxide
Both a and b
None of them
The thickness of the film produced by spin coating depends on the ...... , and concentration of the solution, and the solvent
Viscosity
Density
Solubility
Topography
One of the solution parameters that affect electrospinning process ……
Temperature
Flow Rate
Concentration
All of Them
Membrane Distillation is a thermally driven process in which separation is enabled using ...... membrane
Hydrophilic
Hydrophobic
Hyperbolic
Polytropic
�… that utilized physical forces only such as ball milling and laser ablation
Physical technique
Biological technique
Chemical Technique
Electrical Technique
�… is the most widely studied technique to fabricate nanofibers
Chemical vapor deposition
Membrane distillation
Electro spraying
Electrospinning
Ball milling method is used in producing …… nanomaterials
Organic
Metallic
Hermetic
Symmetric
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