Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Nanotechnology and nanosensors are broad, interdisciplinary areas that encompass (bio)chemistry, physics, biology, materials science, electrical engineering and more. The present course will provide a survey on some of the fundamental principles behind nanotechnology and nanomaterials and their vital role in novel sensing properties and applications.

The course will discuss interesting interdisciplinary scientific and engineering knowledge at the nanoscale to understand fundamental physical differences at the nanosensors. By the end of the course, students will understand the fabrication, characterization, and manipulation of nanomaterials, nanosensors, and how they can be exploited for new applications. Also, students will apply their knowledge of nanotechnology and nanosensors to a topic of personal interest in this course.

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Week 01: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Introduction to Nanotechnology, Part 1

Q1. The size of red blood cells is:

• 7-8nm
• 700-800nm
• 70-80nm
• 7000-8000nm

Q2. What is the 2013 budget for the U.S. National Nanotechnology Initiative?

• $2.3 billion
• $830 million
• $1.8 billion
• $570 million

Q3. Which structure contain million of atoms?

• Protein molecules
• DNA molecules
• Alcohol molecules
• Water molecules

Q4. Which of the following sentences is true?

• Carbon nanotubes are 100 times stronger than steel at one-sixth of the weight
• Carbon nanotubes are 1000 times stronger than steel at one-sixth of the weight
• Carbon nanotubes are 10 times stronger than steel at one-sixth of the weight

Q5. Carbon nanotubes (in air) have the ability to sustain temperature as high as:

• 2000⁰C
• 3000⁰C
• 800⁰C

Q6. What is the dimensionality of nanowires?

• 2-D
• 1-D
• 0-D

Q7. When discussing nano-science, what is the size range of structures?

• 1-100nm
• Everything below 100nm
• 10-1000nm
• 0.1-10nm

Q8. Which of the following statements is correct?

• The use of nanotechnology reduces computer’s size and power consumption while enhances speed and performance.
• The use of nanotechnology reduces computer’s price and power consumption and enhances speed and performance.
• The use of nanotechnology reduces computer’s size and price and enhances speed and performance.

Q9. Which is true?

• When the size of an object decreases, the ratio between atoms on the surface and atoms in the bulk decreases.
• When the size of an object decreases, the ratio between atoms on the surface and atoms in the bulk increases.
• When the size of an object decreases, the ratio between atoms on the surface and atoms in the bulk does not change.

Week 02: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Introduction to Nanotechnology, Part 2

Q1. Which of the following statements is most correct about Atomic Force Microscopy (AFM)?

• AFM moves a very sharp tip over the surface of the specimen to “feel” its shape.
• AFM can visualize protein bound to DNA molecules.
• AFM can visualize unfixed specimens in water or buffer.

Q2. Electron microscopes have a much higher resolution than either the human eye or conventional light microscope because:

• Of their higher magnification
• Of the very short (nanometer) wavelengths of electrons
• All of the answers
• The lenses used are of much higher quality

Q3. The best description of “bottom up” fabrication is:

• Utilizing direct writing without a mask on a “resist”
• Building something by assembling smaller components
• Have a limit of 0.1 microns (100 nm)
• Starting with a larger component and carving away material.

Q4. DNA molecule is a good example for:

• Top down fabrication
• Self assembly process
• A biological un-understood process

Q5. The best technique for fabrication of many devices with minimal resolution of 200 nm will be:

• Focused Ion Beam
• E-beam Lithography
• Self-Assembly
• Standard Photolithography

Q6. The best technique to fabricate one of a kind device with minimal resolution of 10 nm will be:

• Focused Ion Beam
• E-beam Lithography
• Standard Photolithography
• Self-Assembly

Q7. What is the medium gas inside the Scanning Electron Microscope (SEM)?

• Helium
• Argon
• Nitrogen
• There is vacuum inside the SEM

Q8. Which of the following is true?

• Self-Assembly can happen spontaneously
• Self-Assembly is a process that happens only in the lab
• Self-Assembly is a process that happens only in nature

Q9. Which is true regarding Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM)?

• All use electron beam for imaging
• All can detect features below 100nm
• All work under vacuum conditions

Week 03: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Introduction to Sensors’ Science and Technology

Q1. Which of the following is not affected by the diameter of nanoparticles

• Conductivity
• Luminescence
• Interparticle distance

Q2. The sensor in the image is probably:

• A biological sensors
• An electrochemical sensor
• An optical sensor
• A mass sensitive sensor

Q3. The sensor in the image is probably:

• An optical sensor
• A mass sensitive sensor
• A chemical sensors
• An electrochemical sensor

Q4. Gold nanoparticles are highly attractive for cancer therapy because:

• Amplified radio therapy treatments
• Tunneling mechanism
• Biocompatibility
• Amplified radio therapy treatments and biocompatibility

Q5. In comparison to spherical nanoparticles, cubic nanoparticles will have

• Enhanced sensing for polar analytes
• Enhanced sensing for non-polar analytes
• Enhanced sensing for small analytes
• Enhanced sensing for all analytes

Q6. What will be affected from changing the capping ligand of the nanoparticle?

• Conductivity
• Inter-particle distance
• All of the answers
• Chemical sensitivity

Q7. Production of nanoparticles by Laser Ablation method is similar to:

• Bottom-up manufacturing
• Top-down manufacturing
• Chemical synthesis manufacturing

Q8. What can be controlled when preparing nanoparticles through Laser Ablation method?

• Type of capping ligand
• The conductivity of nanoparticles
• The solvent and the nanoparticles starting material
• Non of the answers

Q9. What would be the effect of elevating the temperature of chemiresistor based on nanoparticles?

• Resistance will decline with rising temperature
• Resistance would not be affected
• Resistance will rise with rising temperature

Q10. Which is true about the swelling of the nanoparticles (NPs) film?

• It will always result in lower resistance
• It can result in higher or lower resistance, depending on the morphology
• It will always result in higher resistance

Week 04: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Metal Nanoparticle-based Sensors

Q1. Which of the following is not affected by the diameter of nanoparticles

• Luminescence
• Conductivity
• Interparticle distance

Q2. Which property of nanoparticles is used for separation of molecules in a solution?

• Magnetism
• Atomic lattice
• Conductivity
• Luminescence

Q3. Gold nanoparticles are highly attractive for cancer therapy because:

• Biocompatibility
• Amplified radio therapy treatments
• Amplified radio therapy treatments and biocompatibility
• Tunneling mechanism

Q4. In comparison to spherical nanoparticles, cubic nanoparticles will have

• Enhanced sensing for all analytes
• Enhanced sensing for small analytes
• Enhanced sensing for non-polar analytes
• Enhanced sensing for polar analytes

Q5. What will be affected from changing the capping ligand of the nanoparticle?

• Chemical sensitivity
• Conductivity
• Inter-particle distance
• All of the answers

Q6. Production of nanoparticles by Laser Ablation method is similar to:

• Chemical synthesis manufacturing
• Bottom-up manufacturing
• Top-down manufacturing

Q7. What can be controlled when preparing nanoparticles through Laser Ablation method?

• Non of the answers
• The solvent and the nanoparticles starting material
• Type of capping ligand
• The conductivity of nanoparticles

Q8. What would be the effect of elevating the temperature of chemiresistor based on nanoparticles?

• Resistance will decline with rising temperature
• Resistance would not be affected
• Resistance will rise with rising temperature

Q9. Which is true about the swelling of the nanoparticles (NPs) film?

• It will always result in lower resistance
• It will always result in higher resistance
• It can result in higher or lower resistance, depending on the morphology

Q10. A sensor composed of metal nanoparticles with a small and very polar capping ligand will be:

• Significantly more sensitive to large molecules and to non-polar analytes
• Less sensitive to small molecules and polar analytes
• Not able to detect large molecules and less sensitive to non-polar analytes

Week 05: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Quantum Dot Sensors

Q1. A conventional quantum dots will probably be synthesized form:

• Zinc
• Gold
• Silver
• Cadmium

Q2. What are quantum dots (QD)?

• Dielectric
• Semiconductors
• Metals

Q3. What is the principle that makes Self-organized quantum dots fabrication possible

• Surface migration
• Lattice-mismatched
• Thermal desorption
• Non of the answers

Q4. Which solution contains larger quantum dots?

• The red one
• The yellow one
• It can not be determined

Q5. The quantum dots in the image can be best describe as:

• Quantum dots synthesized by colloidal chemistry
• Self-organized quantum dots
• All of the answers
• Surface modification of quantum dots

Q6. Which of the following is not an advantage of quantum dots QD for contrast agents applications

• Broad excitation spectrum
• A narrow emission spectrum
• Synthesis from heavy metals
• Separation between excitation and emission wavelength

Q7. What has similar size to the size of a quantum dots (QD)?

• A virus
• A glucose molecule
• A cancerous cell
• An atom

Q8. What is achieved with surface modification to quantum dots (QD)?

• Solubility in various solvents
• Better control of QDs size
• A narrow emission spectrum
• Thermal stability

Conclusion:

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This course is intended for audiences of all experiences who are interested in learning about new skills in a business context; there are no prerequisite courses.

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