Functional Materials Lab

MSE 312 Functional Materials Lab
Following experiments are conducted in Functional Materials Lab.

No. Title of the experiment

Detailed contents
Objective and scope of experiment

1. Ionic conductivity

Conductivity measurement as a function of temperature for different samples
Students will learn:
(i) Ionic vs. electronic conduction
(ii) Effect of processing/microstructure

2. Dielectric and ferroelectric/piezoelectric materials

Measurement of dielectric constant
Hysteresis loop
Students will learn:
(i) Dielectric and Ferroelectric/Piezoelectric Materials
(ii) Measurement of dielectric constants
(iii)Dependence on frequency and temperature

3. Optical behavior of Liquid Crystals
    • Measure response to applied field
    • Measure the transmittance
    • Measure threshold voltage

Students will learn:
(i) Photonics: optical behaviour of materials
(ii) Optical behaviour of liquid crystals
(iii) Working of flat panel displays

4. Fabrication of organic light emitting diodes

Partial fabrication of organic polymer light emitting diodes
Characterization of an OLED
Students will learn:
(i) Photoluminescence and electroluminescence
(ii) Measurement of optical power
(iii) Bandgap alignment
(iv) Importance of life time in organic devices

5. Magnetic materials

Magneto resistance
M-H curves
Students will learn:
(i) Magnetic materials
(ii) Magnetic characterization
(iii)Magnetic memory materials

6. Semiconductor characterization

Semiconductors resistivity
Hall measurement
Bandgap measurement
Students will learn:
(i) Carrier concentration, type and mobility
(ii) Electrical vs optical band gap

7&8. Solar cell fabrication and characterization

Fabrication of organic photovoltaic cells (PV) cells
Characterization of solar cells
Students will learn:
(i) Organic semiconducting materials
(ii) Organic electronics processing
(iii)Measurement of power density and efficiency of a working solar cell
(iv) Photonics

9. Processing of biomaterials

Fabricate biomaterials using
(i)compression molding (for entire component), and
(ii) electrostatic spraying (for coatings)
Students will learn:
(i) Processing of structural bulk components of biomaterials
(ii)Deposition of biomaterial coatings

10. Tribology of bio-coatings

Tribology of two samples:
(i) polymer with modifier
(ii) polymer without modifier for comparison purpose.
Comparison with metallic substrates (demo). Students will learn:
(i) Role of hard abrasive coating on the wear resistance
(ii) Coefficient of friction between surfaces
a) Metal and polymer
b) Ceramic-polymer
(iii) Wear damage in terms of the Penetration depth (in situ)

11. Biomimetics/ Surface modification

Effect of surface energy on wetting of surfaces
Samples prepared by the students measuring the contact angle.
Role of surface roughness/ chemistry on affecting the wettability of surface.
Students will learn:

  • The role of surface energy on wetting
  • To render various degree of surface roughness
  • Role of surface chemistry and roughness on wettability
12. Effect of surface modification on Bacteria/ Cell growth

Effect of surface modification/functionalization
characterized by comparing cell growth/proliferation
on treated versus pristine surfaces.
One or more of the following will be performed by
students to learn cell response:

  • Role of surface chemistry (hydrophobic/ hydrophilic and hydrophobic/ hydrophilic + modifier)
  • Role of surface roughness

Cell-proliferation/growth will be demonstrated on the samples prepared by students.
Students will learn:

  • Effect of surface modification on cell viability
  • Role of surface roughness on cell viability