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# Andrew Allen <andrew,allen@nist.gov>
# requesting 4 days, at minimum=3 days
# beamline 33ID, Nanoassembly and Nanocomposite Interactions in Flowiing Suspensions
# instrument 33ID-D USAXS
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# top:/home/www/beamtime-requests/req00590.txt
# UNICAT Member Beam Time Request  #590
# created Mon Apr 19 13:47:57 CDT 2004
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beamline:
	33ID

collaboration:
	Yes

collaborator_Pete:
	ON

contact:
	andrew,allen@nist.gov

days:
	4

description:
	Having commissioned our in situ USAXS flow cell, we now propose to pursue further measurements in two classes of in situ experiment, together with further development of the cell design, itself.
[1] Entanglement issues in boron nitride nanotubes flowing in a surfactant medium: in collaboration with NASA we wish to explore how flow/surfactant conditions may be optimized to minimize entanglement effects. The size and concentration of BN nanotubes should produce a significantly largeer signal than encountered in typical carbon nanotube studies.
[2] Depletion effects in composite nanoparticulate systems as pH conditions are varied. Preliminary results showed promise and we would like to conduct a more serious study of a technologically applicable system.
[3] We need to test modifications we are making to the flow cell temperature and pH control / monitoring capability, and hence complete comissioning of the cell for USAXS.

equipment_required:
	NIST USAXS Flow Cell

experiment:
	Nanoassembly and Nanocomposite Interactions in Flowiing Suspensions

foreign_nationals:
	Jan Ilavsky, XOR.

hazards:
	A range of pH will be explored from below 3 to above 10.
(However, it is NOT planned to use superacid-buffered samples on this occasion.)

instrument:
	33ID-D USAXS

instrument_other:
	

minimumdays:
	3

name:
	Andrew Allen

new_request:
	ON

nonmembers:
	Janet Hurst, NASA; Jan Ilavsky, XOR.
[Andrew Allen and Vince Hackley will be coming from NIST.]

unacceptable_dates:
	June 6 - 10, June 24 - July 16.

z34ID_details:
	


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