Ferroelectric phenomena in liquid crystals

Workshop sponsored by NSF Focused Research Group DMS-0456221

Liquid Crystal Institute and Department of Mathematical Sciences
Kent State University
June 19 - 28, 2007



Register

Important Dates

Main Topics

Scope

Local Organizing
Committee

Scientific Committee

Invited Speakers

Program

Lab Practices

Budget

Accommodation

Proceedings

Maps and Driving Directions to KSU

Wireless Internet

Local Transportation

Rec Center Passes

Photos

 

Main Topics:
Fluid fibers (banana, lyotropic); liquid crystal elastomers; defects and their visualization, with emphasis on ferroelectric materials.


Scope:
The objectives of the Workshop comprise both education and research. The goal of the educational component is to expose graduate students (from both the mathematical and the physical sciences) to several aspects of liquid crystals related to the three topics above, from the points of view of both physics and mathematics. The main research objective is to foster a lively exchange between the participating physicists and mathematicians on the concerned topics.

The pursuit of these goals has driven the structure of the Workshop. The desired outcomes are primarily two: (1) to interest the attending students in these subjects as potential areas for advanced study and (2) to better inform both communities (physics and mathematics) of current developments, in order to facilitate research progress in these areas.

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Local Organizing Committee:
Antal Jákli
(Co-Chair), Eugene C. Gartland Jr. (Co-Chair), Oleg D. Lavrentovich,
Jim Maxwell, Leo Holmberg, Betty Hilgert (Conference Secretary) bhilgert@lci.kent.edu

Contact Us: (330) 672-2654

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Scientific Committee (Focused Research Group):
Daniel Phillips, Patricia Bauman, Jie Shen (Purdue University)
Carme Calderer (University of Minnesota)
Antal Jákli, Eugene C. Gartland Jr., Oleg D. Lavrentovich (Kent State University)

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Invited Speakers:

Paolo Biscari Department of Mathematics, Politecnico di Milano, Italy
Noel A. Clark Department of Physics, University of Colorado, USA
Antonio De Simone Scuola Internazionale Superiore di Studi Avanzati, Italy
James T. Gleeson Department of Physics, Kent State University, USA
Dmitry Golovaty Department of Mathematics, University of Akron, USA
Maurice Kleman Université Pierre et Marie Curie, France
Chun Liu Department of Mathematics, Penn State University, USA
Peter Palffy-Muhoray Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, USA
Jonathan Selinger Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, USA
Robin Selinger Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, USA
Samuel Sprunt Department of Physics, Kent State University, USA
Ralf Stannarius Department of Physics, University of Magdeburg, Germany
Iain W. Stewart Department of Mathematics, University of Strathclyde, UK
Noel Walkington Department of Mathematical Sciences, Carnegie Mellon University, USA
Harald Pleiner Max Planck Institute for Polymer Research, Mainz, Germany (not confirmed)
Xiaoyu Zheng Department of Mathematical Sciences, Kent State University, USA

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Daily program:

Tuesday (June 19)

8:30am-9:00am:

Registration, Welcome, Introduction and Orientation
9:00am-11:00am: Tutorial: Basics of liquid crystals (building blocks, basic physical properties) /J. Gleeson/
11:00am-12:00n: Research Talk: Generalized Orientational Order Parameters: Promises, Possibilities and Perils/P. Palffy-Muhoray/
12:00n-2:00pm: Lunch
2:00pm-4:00pm: Students lab visit: Visit to Alpha Micron and LC Cell Fabrication (teaching cleanroom)
4:00pm-5:00pm: Research Talk: Dynamic light scattering studies of flexoelectricity and biaxiality in certain non-calamitic nematic liquid crystals /S. Sprunt/
5:30pm-7:00pm: Welcoming Reception

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Wednesday (June 20)
9:00am-11:00am: Tutorial: Order-parameter models and defects /D. Phillips/
11:00am-12:00n: Research Talk: Theory of lyotropic liquid crystal filaments /J. Selinger/
12:00n-2:00pm: Lunch
2:00pm-4:00pm: Students lab visit: Visit to Alpha Micron and LC Cell Fabrication (teaching cleanroom)
4:00pm-5:00pm: Research Talk: Mathematical models of complex fluids /C. Liu/
5:00pm-5:30pm: Research Talk: Dynamics and morphology of phase-separated polymers using liquid crystal templates /L.C. Chien/

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Thursday (June 21)
9:00am-11:00am: Tutorial: Introduction to bent-core liquid crystals /A. Jakli/
11:00am-12:00n Research Talk: Ferroelectricity and chirality in banana smectics /N. Clark/
12:00n - 2:00pm Lunch
2:00pm- 4:00pm Students lab visit: June 21st and 22nd : Physics Lab visits and Microscopy (FCPM, SEM, AFM) (LCI 1st and 3rd floor)
4:00pm- 5:00pm Research Talk: Numerical modeling of defect dynamics /N. Walkington/
5:00pm- 5:30pm Research Talk: Lyotropic liquid crystalline structures and their characterization (X-ray scattering, calorimetry and freeze-fracture /A. Bota/

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Friday (June 22)
9:00am-11:00am: Tutorial: Defects, their representation and 3D visualization /O. Lavrentovich/
11:00am-12:00n Research Talk: Defect structure of bent-core liquid crystal filaments /M. Kleman/
12:00n - 2:00pm Lunch
2:00pm- 4:00pm Students lab visit: June 21st and 22nd : Physics Lab visits and Microscopy (FCPM, SEM, AFM) (LCI 1st and 3rd floor)
4:00pm- 5:00pm Research Talk: Numerical calculations for lattice packings of bent-core molecules /E. Gartland/

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Saturday (June 23)

Students' Presentation Day: 20-minute talks about students’ research/dissertation topics.

10:00am-11:40am Session I – Bent-core liquid crystals
  A polarization mechanism for bent-core liquid-crystal fiber stability/Chris Bailey/Kent State University/
  Flexoelectric effects in bent-core liquid crystals/John Harden/Kent State University/
  Modulated structures in thin polar films of banana smectics/Alexandru Nemes/Otto-von-Guericke University/
  Numerical calculations for lattice packings of bent-core molecules/Greg Richards/ Kent State University/
  Stefano Turzi/Politecnico di Milano: T.B.D.
11:40am- 1:00pm Lunch
1:00pm- 2:40pm Session II – Elastomers and Gels
  Pierluigi Cesana/ S.I.S.S.A.: T.B.D.
  Modeling soft elasticity in elastomers/Badel Mbanga/Kent State University/
  Macroscopic behavior of cholesteric elastomers in external fields/Andreas Menzel/University of Bayreuth/
  Side-chain nematic liquid crystalline elastomers: synthesis and characterization/Jeremy Neal/Kent State University/
  Temperature effects on the swelling of gels/Marie Rognes/University of Oslo/
2:40pm- 3:00pm Break
3:00pm- 5:00pm Session III – Smectics, Lyotropics, and Defects
  Modeling the swelling of gels/Catherine Micek/University of Minnesota/
  Helfrich-Hurault effects in smectic-A liquid crystals/Fiona Stewart/ University of Strathclyde/
  Contrast variation small-angle X-ray scattering in studying lyotropic liquid crystals/Zoltan Varga/Budapest University of Technology and Economics/
  Periodic disturbances in cylindrically layered smectic A/Alan Walker/ University of Strathclyde/
  Director Rotation in Chiral Langmuir Monolayers with Topological Defects/Lena M. Lopatina/ Kent State University
 
5:30pm- 6:30pm Soccer Game: Kent State vs. Rest of the World

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Sunday (June 24)
Social Program (Excursions in the Cuyahoga Valley National Park, or a concert at Blossom Music Center and Porthouse Theatre or a visit to the Great Lakes Science Center and Rock and Roll Hall of Fame in Cleveland, or a visit to Museums in Cleveland, or sports activities (soccer, softball), Recreation Center, etc.).

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Monday (June 25)
9:00am-11:00am: Tutorial: Mathematical models for smectic liquid crystals /I. Stewart/
11:00am-12:00n: Research Talk: Telephone cord instability in liquid crystals /P. Biscari/
12:00n-2:00pm: Lunch
2:00pm-4:00pm: Students lab visit: Phase identification by polarizing microscopy and polarization measurements in SmC*; LC fibers; LC elastomers (LCI 1st floor).
4:00pm-5:00pm: Research Talk: Experimental studies of bent-core liquid-crystal fibers /R. Stannarius/
5:00pm-5:30pm: Research Talk: Permanent and induced interactions between particles in nematic liquid crystals /S. Shiyanovskii/

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Tuesday (June 26)
9:00am-11:00am: Tutorial: Introduction to liquid crystalline elastomers /H. Pleiner/
11:00am-12:00n: Research Talk: Angular momentum transport in complex fluids/X. Zheng
12:00n-2:00pm: Lunch
2:00pm-4:00pm: Students lab visit: Phase identification by polarizing microscopy and polarization measurements in SmC*; LC fibers; LC elastomers (LCI 1st floor).
4:00pm-5:00pm: Research Talk: Analysis and stability of bent-core liquid crystals /P. Bauman/
5:00pm-5:30pm: Research Talk: Dynamic theory for smectic-A materials /I. Stewart/

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Wednesday (June 27)
9:00am-11:00am: Tutorial: Analysis of elastomer models /A. DeSimone/
11:00am-12:00n: Research Talk: Effective models for nematic liquid crystalline composites /D. Golovaty/
12:00n-2:00pm: Lunch
2:00pm-4:00pm: Students lab visit: Phase identification by polarizing microscopy and polarization measurements in SmC*; LC fibers; LC elastomers (LCI 1st floor).
4:00pm-5:00pm: Research Talk: Dynamics of liquid-crystal elastomers /R. Selinger/
6:00pm-9:00pm: Workshop Cookout

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Thursday (June 28)
9:00am-11:00am: Tutorial: Nonlinear elasticity, gels, and elastomers /C. Calderer/
11:00am-12:00n: Research Talk: Modeling and simulation of multiphase incompressible flows using an energetic variational phase field model /J.Shen/
12:00n-1:00pm: Open Roundtable Discussion
1:00pm-1:30pm: Closing Remarks

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Laboratory Practices: (tentative)
• Microscopy (POM, SEM, FCPM, AFM)
• Elastomers
• Liquid Crystal Fibers
• Liquid crystal cell fabrication
• Liquid crystal cell characterization
• Visit laboratories in Department of Physics
• Visit local liquid crystal companies
• Mathematics PC lab (numerical modeling)

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Budget:
Funding for the workshop is provided by the NSF DMS-0456221. We are able to sponsor the participation of a limited number of students from abroad or from the United States. Students may request consideration for support via the on-line registration system.

The workshop is open for any interested scientists with a registration fee of $50, and for any student for free.

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Accommodation:

All invited speakers will be accommodated in Kent at the University Inn.

University Inn
540 S. Water St.
Kent, OH 44240
330-678-0123


For students, there are dormitories with single or double occupancy for $25/night. To make your room reservation you will need to pay for it in advance. Please make a credit card payment by going to the room reservation page: http://commerce.cashnet.com/lci
Please indicate how many nights you will need a room.

The address of the dorm is:

Centennial Court B

Kent State University
8 Midway Drive
Kent, OH 44243
330-672-7430

Please check-in at the main office at Centennial A. This office is open 7:00am-midnight. Phone: 330-672-7430


For senior participants we recommend the following motels located in Streetsboro, within 6 miles of the conference site (Free shuttle transportation will be provided by the workshop organizing committee).
Microtel Inn
9371 State Route 14
Streetsboro, OH 44241
(330) 422-1234
Hampton Inn
800 Mondial Parkway
Streetsboro, OH 44241-4540
(330) 422-0500

Rec Center Passes
Those interested in using the Kent State University Student Recreation and Wellness Center can purchase discounted day passes for $5.00 each. To buy these passes, please see Betty Hilgert at the Reception Desk in Room 201 at the Liquid Crystal Institute building. When you go to the Rec Center you will need to bring this pass and show your photo ID to the person at the desk in the Pro Shop which is the first room on the right-hand side when you enter the Rec Center building. Also, please note, you will need to bring your own lock if you choose to use a locker. And, if you wish to shower at the Rec Center you will need to bring your own towel.

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Proceedings:
The presentations all will be available in the Presentations Section of Electronic Liquid Crystal Communications (e-lc.org). All invited speakers are to upload their presentations in PDF format prior to the workshop. Contributing and student speakers have the option of uploading their presentations as well.

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Important Dates (2007):

April 15: Deadline for registrations
June 18: Deadline to upload presentations to e-lc.org
June 19-28: The workshop
June 29: Day-long retreat for members of the Focused Research Group

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Wireless Internet (Flashzone):
The Liquid Crystal Institute and Mathematics Department buildings (as well as a few other areas of campus) have wireless internet access. To access wireless internet click on FLASHZONE as your wireless network connection. Open your browser. Use your personal email address in the GUEST LOGIN box. If you have any questions contact the Kent State University HELPDESK: (330) 672-4357.

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Local transportation
For those who have requested transportation, we will provide shuttle service between Cleveland Hopkins (or Akron/Canton) Airport and Kent. Arrival and departure details have to be sent to us as soon as possible.

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Site designed and maintained by:
Jim Maxwell
Public Relations Coordinator
Liquid Crystal Institute
Kent State University
330-672-7770
maxwell@lci.kent.edu