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Size Range of Carbon Nanotubes
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Size Range of Carbon Nanotubes

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Questions and Answers

What is the typical interlayer spacing between adjacent layers in multi-walled carbon nanotubes?

  • 0.34 centimeters
  • 5 angstroms
  • 3.4 nanometers (correct)
  • 10 nanometers
  • How does the bundling of carbon nanotubes affect their mechanical properties?

  • Decreases mechanical strength and stiffness
  • Increases mechanical strength and stiffness (correct)
  • Decreases stiffness but increases strength
  • Does not affect mechanical properties
  • Why is the formation of continuous conductive pathways desirable in carbon nanotubes for electronic applications?

  • It facilitates the flow of electricity (correct)
  • It reduces electrical conductivity
  • It decreases the electrical properties
  • It enhances electrical resistance
  • What forces contribute to the bundling of carbon nanotubes?

    <p>London dispersion forces</p> Signup and view all the answers

    In which size range do carbon nanotubes typically fall in terms of diameter?

    <p>1 to 20 nanometers</p> Signup and view all the answers

    What is a significant implication of the ability of carbon nanotubes to form bundles?

    <p>Enhanced mechanical properties</p> Signup and view all the answers

    What type of energy can Triboelectric Nanogenerators (TENGs) convert into electrical power?

    <p>Mechanical energy</p> Signup and view all the answers

    Why are MXenes suitable for harvesting wasted frictional energy?

    <p>High electrical conductivity and electron uptake properties</p> Signup and view all the answers

    In what applications are MXenes utilized to develop conductive coatings for flexible substrates?

    <p>Triboelectric Nanogenerators</p> Signup and view all the answers

    What feature allows MXenes to maintain high conductivity even under heavy stretching and bending?

    <p>Mechanically robust nature</p> Signup and view all the answers

    How do MXenes contribute to the development of self-powering devices like cell phones and wearable electronics?

    <p>Enabling energy harvesting and storage capabilities</p> Signup and view all the answers

    Which property of MXenes allows them to detect low concentrations of gases with exceptional sensitivity and selectivity?

    <p>Porous structure and chemical composition</p> Signup and view all the answers

    What determines the bandgap of Transition Metal Dichalcogenides (TMDCs)?

    <p>The combination of transition metal and chalcogen atoms</p> Signup and view all the answers

    Why are monolayers of TMDCs considered promising for electronics and photonics applications?

    <p>Because of their tunable bandgaps and unique electronic properties</p> Signup and view all the answers

    What is the basic unit cell structure of Transition Metal Dichalcogenides (TMDs)?

    <p>Three atomic planes with a transition metal atom sandwiched between two chalcogen atom layers</p> Signup and view all the answers

    In TMDCs, what is the effect of having an even number of monolayers on the crystal structure?

    <p>It creates an inversion center in the macroscopic bulk crystal</p> Signup and view all the answers

    How do different Transition Metal Dichalcogenides (TMDCs) vary in their properties?

    <p>By the combination of transition metal and chalcogen atoms</p> Signup and view all the answers

    What role does the crystal's inversion symmetry play in the properties of Transition Metal Dichalcogenides (TMDs)?

    <p>Indicate the crystal contains an odd number of monolayers</p> Signup and view all the answers

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