Then, David and I made our first set of thiols. A thiol is a mono(molecular) layer of a substance self-attached to a metal-coated glass substrate when it is submerged in a solution of the substance. We prepared the necessary solutions and put our gold-coated chips in the solutions. On the next day, we rinsed the chips, dried them of and went to an ellipsometer to measure the thickness of thiols. And now it happened. When we were first trained on using this ellipsometer, everything appeared to be so easy. There was a detailed manual. Just follow the steps and you will be there. So, I did not take notes on this training, because I was sure that I would be able to handle the thickness measurements easily. So, we came to the clean room. Everything started well. We successfully calibrated the ellipsomer. However, when we had to take actual measurements we realized that we were not quite sure what parameters we should use for a spectroscopic scan. …So, we had to seek help.
Conclusion: take notes! Always! It helps!
….and I will continue my ellipsometer story later…