Br
1
6.3
- noun
- Specialized
:
Br
- The variation in the brightness along the dimer rows is correlated with the presence or absence of residual Br atoms.
- Br atom
Examples
-
How much Br is on this surface (90% of a monolayer, in fact) can be determined by imaging at different tip biases.
Academic text (1998) -
To transfer a Br atom from one Si atom to its partner, the dimer bond between the surface pair has to be broken.
Academic text (1998) -
This article focuses on Br etching because it represents these less reactive halogens.
Academic text (1998) -
The normal, lower-temperature pathway occurs under conditions where, at most, one Br atom bonds to each Si dangling bond.
Academic text (1998) -
Desorption is generally thought to start from a configuration in which one Br adatom is bonded to each Si atom of a surface dimer.
Academic text (1998) -
One way to test this vacancy-assisted desorption picture is to measure the rate of desorption from surfaces that have been dosed with Br and then heated.
Academic text (1998) -
Finally, studies with atomic resolution STM have also led to the conclusion that there is a previously unexpected bonding configuration for Br on Si(100) at high temperature.
Academic text (1998) -
In this high-temperature 3 x 1 phase, the Br concentration is higher than in etching at lower temperatures, and rows of SiBr2 units alternate with dimer rows of SiBr3.
Academic text (1998) -
Holding it back is a diffusion barrier whose height depends on the jump direction and whether the Br atom jumps between identical sites on a terrace or between terrace sites and step sites—as can be envisioned from figure 1.
Academic text (1998) -
Bromine, or Br, is often used in disinfectants due to its strong chemical properties.
Surface Forms
Etymology
Br is the chemical symbol for bromine, and that name comes from the Greek word bromos, meaning 'stench' because the element gives off a strong, unpleasant smell. So, remember Br as the smelly, dark brown element often found in seawater.