Michael James Riley

4 Questions 17 Answers 0 Followers

Questions related from Michael James Riley

Can TEM be used to image amorphous sections and grain boundaries, specifically crystal boundaries of anatase TiO2?

I am studying the annealing process of TiO2 nanorods (1um tall, 50nm wide) as they convert from amorphous to anatase, and it would be useful to 'see' the amorphous portions. I'm using selected...

10 October 2012 9,250 28 View

Has anyone injected ammonia into an electron beam deposition system? Any concerns?

I'm trying to inject nitrogen into some of the PVD materials I'm growing, and ammonia added during deposition may be able to accomplish this

10 October 2012 7,773 6 View

How do I best prepare a TEM sample of titanium dioxide nanorods to get a cross-section of a single rod to see variations in the crystalline structure?

I have nanorods grown by oblique angle deposition at 85 degree tilt angle, annealed in oxygen at 550°. The rods are approximately 50nm to 100nm wide by 400nm long, and primarily in the anatase...

06 June 2012 4,888 8 View

Why does Krypton work better than N2 or Ar for BET surface area measurement of porous thin films?

Argon and N2 are standard gases for BET surface area measurements for powders. For thin films adhered to the surface of a substrate such as silicon, however, the mass is below the threshold of...

04 April 2012 5,572 14 View