Other Things To Know

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For each chapter, understand fully each of the homework problems.

Ch. 16.  Polymer Structures

  • The different types of stress-strain behaviors of polymers.
  • Effect of temperature on mechanical properties.
  • How semi-crystalline polymers deform.
  • Crystallization through nucleation and growth.  Effect of temperature.
  • Solidification and what is the glass transition temperature.
  • Differences between thermoplastic and thermosetting polymers.
  • What is viscoelastic behavior.
  • How elastomers deform under a tensile load.
  • Fracture and grazing behavior.
  • Forms of polymerization.
  • What is vulcanization and what it is used for.
  • Ch. 19.  Electrical Properties

  • What is Ohm's law and its origin.
  • The relationship between electrical conductivity s and electron motion in metals.
  • How s depends on temperature, impurities and defects. 
  • Energy bands and how they form.
  • The meaning of the Fermi level and of band gaps.
  • The difference between semiconductors and insulators.
  • What is a hole in a semiconductor.
  • How intrinsic and extrinsic semiconductors differ.
  • What makes a semiconductor be of n- or p-type.
  • The temperature dependence of s in different cases.
  • The periodic table around group IV, and what impurities of different groups do.
  • How a p-n junction diode works and how it rectifies current.
  • Conduction mechanisms in ceramics.
  • What is capacitance and what it depends on.
  • The meaning of dielectric constant.
  • The effect of a dielectric on a capacitor.
  • Types of polarization and the frequency dependence of the dielectric constant.
  • Dielectric strength.
  • How can a ferroelectric material be polarized.