The Surface Structure, Deposition & Adsorption Calculator

Blue fields allow input; press <RETURN> or <TAB> to calculate.

INPUT:	Element
(the substrate)	Lattice Type
	Lattice constant a=	pm
	c=	pm
	Surface orientation
STRUCTURE:	Nearest-neighbor dist. (bulk):	pm
	Nearest-neighbor dist. (surf.):	pm
	Interlayer distance:	pm
	Atoms (unit cells) per area:

DEPOSITION OF:	Element
(on the substrate	Density	kg/m³
entered above)	Atomic/molecular mass	amu
	Atom density:	m^-3
	1 ML ^* corresponds to:
	or:	pm ^**.
	If deposited on a	MHz crystal, ^***
	1 ML ^* causes	Hz frequency shift.

ADSORPTION OF:	Atom/Molecule
(on the substrate	Atomic/molecular mass	amu
entered above)	Dissociating into	fragment(s)
	Sticking coefficient
	Gas pressure	mbar
	Gas temperature	K
	1 ML ^* corresponds to	L (Langmuir; 1 L = 10⁻⁶ torr s)
	1 ML ^* needs	to adsorb.

* “Monolayer” (ML) refers to a pseudomorphic monolayer, i.e., a layer with the same density of atoms (unit cells) per area as the substrate (irrespective of whether such a layer of the given atoms/molecules can exist or not).
** Reading on a quartz crystal microbalance.
*** Enter actual (current) frequency, not nominal frequency here. For standard (AT-cut) crystals; not for heavily pre-loaded crystals.

surface/surfcryst.txt · Last modified: 2023-10-16 21:44 (external edit)