Seminar on High Resolution Transmission Electron Microscopy: The Debye-Waller factor and the thermodynamic stability of graphene

Thursday February 13 2014, 2:00 pm

McDonnell Douglas Engineering Auditorium

 

 

The Debye-Waller factor and the thermodynamic stability of graphene

Dr.  Matthew Mecklenburg

Center for Electron Microscopy and Microanalysis, USC

Please RSVP here!

Abstract:   Why are two dimensional materials stable and how can we use electron microscopy to understand their stability?   2D crystals are impossible, according to some interpretations of work by Landau and Peierls. Thus, suspended graphene’s evident stability poses fundamental questions about long-range order in two-dimensional crystals.   With information gathered from a variety of electron microscopy techniques that include aberration corrected imaging and diffraction we are able to understand the stability of graphene and other two dimensional materials.  The good agreement between our ab initio theory and experiment indicates that ripples in the third dimension are not necessary to resolve graphene’s alleged stability paradox.

 

If you have any questions please contact Amir at: akhalajh@uci.edu

 

Bio:  Dr. Mecklenburg is the senior staff scientist at the University of Southern California’s Center for Electron Microscopy and Microanalysis.  He is an expert in electron microscopy, in particular in situ characterization of materials using heating and electrical biasing techniques.   He received his Ph. D. in physics at UCLA working with Prof. Regan, whose research is focused on the in situ microscopy of microelectronic devices and fluid cells.  After graduating he worked for an FFRDC, The Aerospace Corporation, where he received an internal grant to develop new techniques for in situ temperature measurements, and where he worked with SiMPore, Inc. to develop a new type of sample support to allow electrical biasing of samples prepared with a focused ion beam.  At The Aerospace Corporation he also worked extensively on projects directed by the Air Force Space and Missile Command and the National Reconnaissance Office related to the development and testing of microelectronic devices for space based applications.  Currently he teaches the graduate level class in electron microscopy at the University of Southern California and is developing new in situ microscopy techniques to better understand nano-scale thermodynamics.

2014 SCSMM Spring Metting

Subject: SCSMM – Call for Student Talks and Posters

Dear Fellow Microscopist,

Please find our invitation below for students from Southern California universities to present their work at the SCSMM full-day Symposium to be held on February 8, 2014 at the University of California Irvine.
As is our tradition, the best platform presentation will be awarded $500 and the best poster will be awarded $300. These awards are to support travel to the national M&M Meeting, this year to be held in Hartford, CT (August 3-7, 2014).

More information on abstract submission and deadlines can be found in the file attached.
Examples of submitted abstracts from the last full-day symposium can be found on our website:

http://www.scsmm.org/history/2013-Student-Abstracts.pdf

Sincerely,

Your SCSMM Board

Call for Student Talks and Posters
SCSMM Symposium, Saturday February 8th, 2014
Calit2 Auditorium, University of California, Irvine
All students attending Southern California universities are invited to submit titles and brief abstracts (~200 words plus one optional JPG image) to present their work at the SCSMM All-day Symposium to be held at Calit2 Auditorium, UCI on February 8th, 2014. Five submissions will be selected as 15 minute platform presentations. All others will be invited to present posters describing their work.
As is our tradition, the best platform presentation will be awarded $500 and the best poster will be awarded $300. These awards are to support travel to the national M&M Meeting, this year to be held in Hartford, CT (August 3-7, 2014).
Please submit abstracts to:
sergey@seas.ucla.edu
The subject line should read – SCSMM Student Presentation
The content should include:
Name, e-mail address and affiliation (institution, department).
Preference for platform or poster presentation (students requesting a platform presentation may be asked to submit a poster as only five platform presentations are scheduled).
Presentation title.
A ~200 word abstract.
(Optional) an image after the text of the abstract and not exceeding one page. See examples of submitted abstracts from the last year symposium on our website:
http://www.scsmm.org/history/2013-Student-Abstracts.pdf
Deadline for submission – January 24
Notifications of acceptance will be e-mailed by January 31.