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# Andrew Allen <andrew.allen@nist.gov, 301-975-5982>
# requesting 3 days, at minimum=2 days
# beamline 33ID, "Preliminary in-situ investigation of surfactant-mediated nanoparticle assembly"
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# top:/home/www/beamtime-requests/req00327.txt
# UNICAT Member Beam Time Request  #327
# created Mon Dec 09 14:33:47 CST 2002
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beamline:
	33ID

collaboration:
	Yes

collaborator+Pete:
	on

contact:
	andrew.allen@nist.gov, 301-975-5982

days:
	3

description:
	Previously, we have characterized particle size and agglomeration issues in a series of generic dry powders and pre-prepared nanoparticle suspensions. We now propose to investigate, in situ, assemblies of surfactant-mediated nanoparticles in a sample configuration that will more easily permit an interrogation of the time-dependent dynamics of interparticle interactions. Specifically, this will involve the use of thin-walled quartz capillary tubes containing nanoparticle suspensions that will permit the study of spatial distributions. We also propose to devote one full day to work with the BIO-CAT liquid-flow cell in order to test the suitability of its design for future USAXS studies along these lines.

equipment+required:
	Standard USAXS configuration at  upto 17 keV (depending on quartz wall thickness). Some UNICAT liquid cells required for cross-calibration.

experiment:
	Preliminary in-situ investigation of surfactant-mediated nanoparticle assembly

foreign+nationals:
	Ajit Jilla, NIST

hazards:
	No significant hazards. Preparation of acidic and basic suspensions will remain within modest pH limits.

minimumdays:
	2

name:
	Andrew Allen

new+request:
	on

nonmembers:
	Tom Irving and Elena Kondrashkina of BIO-CAT

unacceptable+dates:
	March 17 - 24, 2003. 
	ALSO: need to co-ordinate scheduling with BIOCAT for cell availability.


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