Nanotechnology and Energy Storage: Characterization of Nanomaterials
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Questions and Answers

What is the condition for constructive interference between rays AOA' and BPB'?

  • The path difference is λ/2
  • The path difference is λ or a multiple of λ (correct)
  • The path difference is 2d tanθ
  • The path difference is 2d cosθ

    • What is the distance between consecutive crystal planes?

  • λ
  • 2d
  • d (correct)
  • λ/2

    • What is the purpose of diffraction techniques?

  • To investigate the surface structure of materials
  • To understand the structure of bulk materials and nanomaterials (correct)
  • To study the electrical conductivity of materials
  • To analyze the optical properties of materials

    • What is required for diffraction analysis to be effective?

    <p>Long-range periodic arrangement of atoms/molecules</p> Signup and view all the answers

    What is the minimum size of nanoparticles that can be investigated using diffraction techniques?

    <p>20 nm</p> Signup and view all the answers

    What type of particles can be used for diffraction techniques?

    <p>Electrons, X-rays, and neutrons</p> Signup and view all the answers

    What is the range of wavelengths of X-rays?

    <p>0.01 to 10 nanometers</p> Signup and view all the answers

    What is the range of distances between atoms in a crystal?

    <p>0.1 to 0.3 nanometers</p> Signup and view all the answers

    Who observed well-defined diffraction spots on a photographic plate?

    <p>Max von Laue</p> Signup and view all the answers

    What is the name of the method used to study crystals, which involves replacing a photographic plate with an X-ray detector?

    <p>Laue Method</p> Signup and view all the answers

    Who offered a simple geometrical explanation of the observed diffraction pattern?

    <p>W.L.Bragg</p> Signup and view all the answers

    What is the name of the law that describes the diffraction pattern of X-rays?

    <p>Bragg's Law</p> Signup and view all the answers

    What is the primary reason we are able to see objects around us?

    <p>Light is scattered by the objects and enters our eyes</p> Signup and view all the answers

    Which type of microscope is used to study the surface topography of materials?

    <p>Scanning Tunnelling Microscope</p> Signup and view all the answers

    What is the purpose of Bragg's Law of Diffraction?

    <p>To relate the diffraction angle to the lattice spacing of a material</p> Signup and view all the answers

    Which technique is used to measure the particle size distribution of nanoparticles?

    <p>Dynamic Light Scattering</p> Signup and view all the answers

    What is the primary application of Vibrating Sample Magnetometer (VSM)?

    <p>To measure the magnetic properties of materials</p> Signup and view all the answers

    Which technique is used to measure the mass change of a material as a function of temperature?

    <p>Thermogravimetric Analysis (TGA)</p> Signup and view all the answers

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