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# Pete Jemian <jemian@anl.gov>
# requesting 1 days, at minimum=1 days
# beamline 33ID, USAXS of sea urchin teeth, single crystal aluminum, and semidilute polymer solutions
# instrument 33ID-D USAXS
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# top:/home/www/beamtime-requests/req00688.txt
# UNICAT Member Beam Time Request  #688
# created Tue Nov 23 16:51:28 CST 2004
####################################################

apsrun:
	2004-03

beamline:
	33ID

collaboration:
	Yes

collaborator_Pete:
	ON

contact:
	jemian@anl.gov ilavsky@anl.gov vijay@aps.anl.gov

days:
	1

description:
	The 33ID beam line is not scheduled for the three shifts 2004-11-28 8:00 AM to 2004-11-29 8:00 AM.  The proposed experiments will make use of the USAXS setup which is currently installed.

Stuart Stock (Institute for Bioengineering and
Nanoscience in Advanced Medicine, Northwestern Univ., Chicago, IL) wants to study, in collaboration with Jan Ilavsky, the process of cleaning the sea urchin teeth for biological study.  This USAXS study is part of a larger complementary studies program.  See, for example: 
http://www.future.aps.anl.gov/Future/Workshops/Using_Xray_Imaging/Slides/stock.pdf

Jan also has some single crystal aluminum samples to investigate.  Both of these sets of samples would be best measured at the 11 keV, where the instrument will be tuned at the beginning of this period.

Vijay Tirumala, APS, would like to measure the radius of gyration in semidilute polymer solutions based on poly (N-isopropylacrylamide).    The next scheduled USAXS user wants to operate with 7 keV X-rays.  It is proposed that the beam line will be tuned to that energy for the measurement of the semidilute polymer solutions on Sunday afternoon to allow the beam line optics to stabilize to the heat load conditions of 7 keV operations.He writes:
-------------------------------
Polymerization will be undertaken in colloidal gold solution, with three different particle sizes ca. 5 nm, 20 nm, and 40 nm. Since the lower critical solution temperature of PNIPAm chains is dependent upon the strength of their hydrogen bonding with water and it's constituents, I hope to see their representative effects in phase transition and hysteresis.

PNIPAm is not considered hazardous nor is it reactive. I would just put 1 or 2 for health and 0 for fire & reactivity. Pure gold nanoparticle solutions will also be measured to understand their aggregation state.
-----------------------------------------------

equipment_required:
	USAXS

experiment:
	USAXS of sea urchin teeth, single crystal aluminum, and semidilute polymer solutions

foreign_nationals:
	

hazards:
	The sea urchin teeth represent no biological or chemical hazard.
The single crystal aluminum represents no biological or chemical hazard.

PNIPAm is not considered hazardous nor is it reactive. Vijay would just put 1 or 2 for health and 0 for fire & reactivity. Pure gold nanoparticle solutions will also be measured to understand their aggregation state.

instrument:
	33ID-D USAXS

instrument_other:
	

minimumdays:
	1

name:
	Pete Jemian

nonmembers:
	Jan Ilavsky <ilavsky@aps.anl.gov>
Vijay Tirumala <vijay@aps.anl.gov>
Stuart Stock

unacceptable_dates:
	please schedule this time for
2004-11-28 8:00 AM - 2004-11-29 8:00 AM

z34ID_details:
	


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