Recent content by madhusoodan

I got the answer from some literature. firstly, Pt is stable in most of the chemical environments when compared to many other metals . secondly, power consumption in this case is less thanks

what is reason for preferring platinum in micro-heater fabrication in the case of a gas sensor ? my understanding is that it is because of its stability in different chemical environments. Please comment if there are any other reasons

Thanks . there are many as youmentioned

I wanted to study electrical behavior of thin films. Can anybody suggest me suitable source measure unit please? (also of low budget) Power supply: Voltage (few volts) measurement: current (micro- milliamps)

@nasu However, all ten thousand (s) of crystalline materials fall into 230 space groups only. out of that, many systems have peaks near 32 degrees. Very less number of systems have peak in the range of 20-30. I should not have used 'almost every'.

Why almost every crystal system has peak around 32 degree (2 theta) ?

Thanks for the reply. Still I doubt whether electrons are ejected out from the atoms of sample or not during the xrd. Since energy of the Cu Kα photons is huge compared to Al kα photon,it seems electrons seems to be get ejected, however it is not observed and mentioned anywhere. Please help me...

Thanks for clearing my earlier doubt. Why can't Cu K alpha eject electrons from atoms of the sample in XRD? As everyone knows, Al K alpha photon with 1486 eV energy is used for XPS to remove electrons from core levels. My doubt is why can't Cu K alpha photon with 8000+ eV do that?

Why can't Cu K alpha eject electrons from atoms of the sample in XRD? As everyone knows, Al K alpha photon with 1486 eV energy is used for XPS to remove electrons from core levels. My doubt is why can't Cu K alpha photon with 8000+ eV do that?

You can try "Match"

[Mentor's note: Post moved to its own thread] Hi Please let me know why core electrons are removed from the atoms on x-ray irradiation in XPS, though it was easier to outer electrons?

Hi I wanted to know how to find out absorption coefficient (alpha) of a uv-vis spectrum of thin film to determine energy gap of he material. Somewhere (http://www.sciencedirect.com/science/article/pii/S0925346709003656) it is written like if you know thickness then we can find out alpha. Is it...

Hi Low pressure and vacuum are one and the same no? Is there any difference between vacuum level and pressure level?

Hi all Can you please let me know why almost all metal oxide semicondductors are n type?