Dr. Aniruddha Chakraborty

Interesting Questions                                                                 <<back

 1. What is the difference between 'standard' tunnelling and dynamical tunneling ?

 2. What is the difference between local modes and normal modes ?

 3. What is the difference between dipole moment and transition dipole moment ?

 4. Why light-molecule classical interaction is written as the dot product of dipole moment  vector and electric field vector?

 5. What is coherent state?

 6. What is the difference b etween mechanical anharmonicity and electrical anharmonicity ?

 7. Can we know one or more tri-atomic/tetra-atomic molecules which have multiple distinct stable geometric structures or isomers ?

 8. What is the basic idea behind 'single molecule spectroscopy' ?

 9. Can we have an analytical expression of Tunnelling probability for Dirac Delta potential barrier?

 10. Why should one study Molecular Electronics ?

 11. How can carbon nano tubes be used as memory device ?

 12. What are the benifits of using molecular logic gates ?

 13. What is molecular switch ?

 14. Homonuclear diatomic molecule do not show vibrational spectra. Why ?

 15. Will the molecule 17 O-16 O show rotational spectrum ? Explain.

 16. Diatomic molecules such as HF, HCl and CO show a rotational spectrum whereas  N2,O2and H2 do not. Why ?

 17. List the different regions of the electromagnetic spectrum and mention the type of molecular transitions that occur in each region.

 18. Why are anti stokes line less intense than stokes line ?

 19. The intensity of J=0 -> J=1 is often not the most intense rotational line. Why?

 20. How would the vibrational energy spacing of D2 molecule compare with that of H2 molecule?

 21. Explain the effect of anharmonicity on the vibrational spectra of a diatomic molecule.

 22. Explain the effect of isotopic substitution on the rotational spectrum of molecules.

 23. Why does an atom generally absorb radiation only from the ground state, while a  molecule can absorb radiation from many excited rotational or vibrational states?

 24. How would the rotational energy spacing of D2 molecule compare with the rotational energy spacing of H2 and their equilibrium bond distances?

 25. What parameters can one get from a study of the rotation-vibration spectrum of a heteronuclear diatomic molecule? How are they estimated?

 26. What is reaction coordinate ?

 27. what is the origin of zero point energy ? Can it be measured experimentally ?

 28. What is Transition State ? Can it be detected experimentally ?

 29. What is Hydrogen bond ?