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# Leonardo Basile,  Haydn Chen <lbasile@uiuc.edu>
# requesting 6 days, at minimum=3 days
# beamline 33ID, "Ag film growth on Si(111) @ low temperatures"
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# top:/home/www/beamtime-requests/req00247.txt
# UNICAT Member Beam Time Request  #247
# created Fri Mar 15 14:16:46 CST 2002
####################################################

beamline:
	33ID

collaboration:
	Yes

collaborator+Hawoong:
	on

contact:
	lbasile@uiuc.edu

days:
	6

description:
	Fully wetting and atomically flat two-dimensional Ag overlayers 
	on a Si(111) surface is a metastable system of intriguing properties, which can be growth by low temperature deposition followed by thermal annealing. This metastable configuration has been suggested to be defined by Quantum Size Effects (QSEs). A fully wetting flat film, free of voids, can be obtained only for thickness of more than 6ML, the critical thickness, and slow annealing to room temperature. We have studied films of thickness of less than 6ML. We want to explore the evolution of the film morphology, during deposition and annealing, for thickness beyond the critical value of 6ML.  
	Expected turn-around time for bake-out and outgassing is 32 hrs. Allocation of multiple 16-24hrs slots separated at least for 48 hrs will be welcomed.

equipment+required:
	Roper CCD

experiment:
	Ag film growth on Si(111) @ low temperatures

foreign+nationals:
	Leonardo Basile, Zhongming Wu

hazards:
	LN2 use. Oxigen monitor will be on inside hutch.

minimumdays:
	3

name:
	Leonardo Basile,  Haydn Chen

nonmembers:
	

unacceptable+dates:
	


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