[Ifeffit] Postdoctoral position in Yeshiva University and Brookhaven National Laboratory

2014-06-20 Thread Anatoly I Frenkel
Dear subscribers,

Please pass along this information to anyone who may be interested in this 
opportunity.

Physics Department of Yeshiva University in New York City will have an opening 
for a postdoctoral research associate position, beginning September 2014. The 
project title is: Characterization of structure, diffusion mechanism and 
optoelectronic properties of doped colloidal semiconductor nanocrystals. The 
postdoc will be stationed at Brookhaven National Laboratory and use advanced 
facilities of NSLS-II for X-ray spectroscopy and Center for Functional 
Nanomaterials for electron microscopy measurements. Required qualifications: 
Ph.D. in physics, chemistry or materials science, expert knowledge of XAS 
methods and their applications to nanomaterials, and experience with in situ 
characterization methods. Working knowledge of Raman spectroscopy is a plus.

The research will be performed under the direction of Prof. Anatoly Frenkel. 
Applicants should forward cover letter with contact information of three 
references and CV to  Prof. Frenkel at anatoly.fren...@yu.edu. Yeshiva 
University is an Equal Opportunity Employer.

Anatoly Frenkel, Ph.D., Professor
Department of Physics, Yeshiva University
245 Lexington Avenue, New York, NY 10016
http://www.yu.edu/faculty/afrenkel
Spokesperson, Synchrotron Catalysis Consortium http://www.yu.edu/scc
Office: (212) 340-7827, Lab: (631) 344-3013, Email: anatoly.fren...@yu.edu
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Re: [Ifeffit] Ifeffit Digest, Vol 136, Issue 11

2014-06-20 Thread Bruce Ravel


Well, not only was the shift vector not working, it seems I had somehow 
neglected to even implement it in Demeter!  It's amazing what can go 
unnoticed and for how long.


This will be fixed in the next release.  Thank you, Madhusmita, for 
bringing this to my attention.


B


On 06/18/2014 09:38 AM, Bruce Ravel wrote:

On 06/18/2014 07:52 AM, madhusmita sahoo wrote:

Contd- Crystallographic input for a structure having screw axis and
co-ordinates shifted by certain amount
Dear sir,
  herewith I am attaching two input files. The first one  with the name
wyckoff .inp generates The first co-ordination sphere at 1.9465 angstrom
with degenracy of 6.
According to crystal structure data anatase structure should have 4
oxygens at 1.9339 angstrom and 2 oxygens at 1.9796 angstrom.
So, I tried with the crystal input from the latest PDF-4+2013
database(attaching the PDF as word file for your ref.
That (  inp file - attached)eventually generates the required
co-ordination sphere with 4 oxygen at 1.3964( as against the XRD data of
1.9339) and 2 oxygen at 1.8925(aginst the XRD data from PDf-4+2013 of
1.9796 angstrom)


You seem to be asking about Atoms' use of the shift vector.
Specifically, you seem to be asking whether the shift vector is
working correctly.

If so, that appears to be a legitimate question and the answer appears
to be /no/.  Sigh  I will look into it and try to have that fixed
in time for the next release.

Cheers,
B






--
 Bruce Ravel   bra...@bnl.gov

 National Institute of Standards and Technology
 Synchrotron Science Group at NSLS --- Beamlines U7A, X24A, X23A2
 Building 535A
 Upton NY, 11973

 Homepage:http://xafs.org/BruceRavel
 Software:https://github.com/bruceravel
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