Recent content by Skullmonkee

Hi, Yes, generally for functionalisation of the silicon surface (SiO2) the native oxide layer should be removed. This can be done using a strong oxidizer which hydoxylates the surface of the silicon, leaving -OH groups (SiOH). These groups can react. In my case however, i did not want...

Thanks for the replies. Si forms an oxide which is responsible for making the surface natively hydrophobic. It's possible to remove the oxide with things like piranah solution to make the surface hydrophilic, in which case silano linkages can form. However, specifically what i was referring...

Hello, I have been doing some research with self assembled monolayers. I was wondering if a molecule terminating in -OH was able to bond with a silicon wafer in atmospheric conditions?

Hi i was wondering if anyone could help me with a fairly simple integration. \int exp(iab/c)exp(-iaz) da Where the integral is from 0 to infinity Im not sure how to proceed with this and am basically teaching myself Thanks in advance for any help.

Thankyou. I'm using the radius rather than a point xyz so its sperical. Makes sense. Thanks again.

Im curious about an electric field (somewhere of radius s) inside a solid sphere (radius a) such that: \int E.da=E4\pi s^{2} and Q = \frac{\rho 4\pi s^{3}}{\epsilon_{o}3} What is the difference between using each coordinate system to solve for E? It's just that I've really had to teach...

Do you mean this? \int\Psi^{*}\Psi dx=1 \int Acos(\pi x/a)*Acos(\pi x/a)dx = \int A^{2}cos^{2}(\pi x/a) But I am not sure where to go from here?

Homework Statement normalize the wave function \Psi(x)= Acos(\Pi*x/a) to show that A=\sqrt{2/a} The Attempt at a Solution i don't know how to get that answer as all i can tell, normalizing gives: -A^{2}pi^{2}2x/a^{2} * sin (pix/a) However this does not give the right answer for A Any...

Thanks CompuChip That was my thought exactly. I could not see how there was not a (C m)^(3/4) term. At least i was on the ball there. I suppose that the solution which was given (the working i showed in the pic) is just wrong then?

Just a quick question. I finished an expectation value sum and noticed that the given solution had me stumped. Ive attached a quick picture of the simplifying process which was given as the solution. The only thing i don't understand is how to get the value iCm/(pi*hbar)^1/2. I don't know...

thanks for all the help. i learned a lot.

Thank you everyone. I think I am getting there. b.szczesny: thanks for the great help but can i just ask why E1=y1*m1 = 1000 and not E1=y1*m1*c^2? I know that for the four-momenta ic can be written as i(E/c) but dosn't that result in i1000c not i1000? Im still learning 4-vectors

Homework Statement A car of mass 600kg traveling at 0.8c hits another, stationary car of 800kg. The two cars stick together. What is the mass and speed of the coupled cars? Homework Equations The Attempt at a Solution I found the momentum of the first car as p=gamma*mu =...

I got stuck in the algebra. After plugging it into the formula as you did.

Thanks CompuChip. but how did you derive that answer? I tried doing it myself but got really lost.