Materials Characterization — Winter 2021

Describe difference between SEM and TEM.

What is Material characterization? Classify Material characterization techniques.

Discuss thermogravimetric analysis technique. List applications of TGA.

Explain the method used to calculate enthalpies of transitions from DSC curve.

Describe difference between Heat flux DSC and Power Compensated DSC.

What is electron microscopy? Write a on High Voltage Electron Microscopy.

What do you mean by Vacuum gauge? Explain the principle and instrumentation of Pirani gauge with their merits and applications.

Write a short note on Bright field microscopy.

Discuss effect of wavelength and Refractive index of the medium on resolution of microscope.

Explain the principle and instrumentation of AFM. Give merits and applications.

Justify the requirements of vacuum conditions in SEM.

Write a note on Insitu Metallography.

Explain the principle and instrumentation of STM. Give applications.

What is EDS? Why EDS X-ray analysis is done?

Discuss briefly about various types of signal detectors of electron microscope.

Discuss various methods of Atomic Emission Spectroscopy. List advantages of AES.

What do you mean by photoelectron spectroscopy? Give applications of XPS.

Explain the principle and working of WDS.

Explain the principle and instrumentation of UPS. Give applications.

What is X-ray diffraction? How it is useful in material characterization?

Discuss about Ultraviolet-Visible Spectrophotometer.

Explain briefly Powder (Debye Scherrer) method of diffraction. How it is useful to study lattice parameter of crystal?

List advantages and disadvantages of Laue method of diffraction.

What are the difficulties with the rotation method of diffraction? How it can be overcome?

What do you mean by LEED. Explain the principle and instrumentation.