Mohammad Reza Derakhshandeh

3 Questions 4 Answers 0 Followers

Questions related from Mohammad Reza Derakhshandeh

How can I clean a clogged needle/metering valve?

I have encountered complete blockage of needle valves used for TiCl4 (in chemical vapor deposition). Despite heating of valve, the needle valve is completely blocked and does not open even with...

15 September 2021 2,224 3 View

What is a suitable method for measurement of CPE exponent of a coated metal fitted with two time constant circuit?

I encountered a problem for measuring CPE exponent of a coated metal by impedance spectroscopy. The fitting results showed an equivalent circuit with two CPE. The logarithmic diagram of the...

22 December 2018 4,271 5 View

What is the meaning of D peak shifting, and D peak FWHM changing in Raman spectra of DLC (a-C:H) films??

what parameters can affect on D peak position and FWHM

11 November 2016 9,113 2 View