May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 1 Liquid Crystalline Elastomers as Artificial Muscles P.E. Cladis Advanced Liquid Crystal Tech.

Slides:

Advertisements

Similar presentations

Liquid Crystals A Unique State of Matter Prepared By: Joseph A. Castellano, Ph.D., RESEED Silicon Valley, 2008.

Advertisements

Liquid Crystal Elastomer Films and their Potential in Sensing Sarah Hicks EARS-IGERT project Lake Lacawac Workshop 2010.

Phase Transitions in Colloidal Suspensions of Disks Zhengdong Cheng, Texas Engineering Experiment Station, DMR Despite their natural abundance.

Fluid Phases of Bent-Core Molecules - Novel Physics and Applications Samuel N. Sprunt, Kent State University, DMR Giant flexoelectricity observed.

A Practical Guide to Troubleshooting LMS Filter Adaptation Prepared by Charles H. Sobey, Chief Scientist ChannelScience.com June 30, 2000.

Phenomena and Problems in Liquid Crystal Elastomers Mark Warner, Cavendish Cambridge. Classical Rubber Locally a polymeric liquid – mobile Make more complex,

June 12, 2006 Great Lakes Photonics Symposium 2006 Liquid Crystalline Elastomers Jeremy Neal Liquid Crystal Institute - Kent State University Kent, OH.

DCMST May 23 rd, 2008 Liquid Crystals Gavin Lawes Wayne State University.

VIANNEY GIMENEZ PROF. PETER PALFFY-MUHORAY LCE swelling experiment.

Liquid Crystal Technology Overview ECE-E443 Kai Chung Wong.

Liquid Crystal Elastomer Dielectric Constant Measurements Ferroelectric Workshop – Kent State UniversitySaturday, June 23, 2007 Liquid Crystal Institute.

C HARACTERIZATION OF S WELLING OF L IQUID C RYSTAL E LASTOMERS Sarah Hicks Palffy lab Spring 2007.

CB Layers at Different Temperature 1 “Formation of Liquid Crystalline Phases from a Langmuir Monolayer” By K.A. Suresh and A. Bhattacharyya.

Epitaxial Growth of Ferroelectric Titanate Layers by Sol-Gel Routes Muhammad Salameh Prof. Eric P. Kvam.

Reactive ion etching. Material selectivity Ion Beam Nordiko 3000 IBD system Etch rates 70ºpan 65 W130 W * junctions, spin valves.

March 21, 2005 March Meeting of the APS Los Angeles, CA An Artificial Light Driven Goldfish Jeremy Neal Peter Palffy-Muhoray Tibor Toth-Katona Heino Finkelmann.

Coronal waves: hot structure and footprint of CME.

Bronwyn Boos. C.6.1; describe the meaning of the term liquid crystals  Liquid crystals are fluids that have physical properties (electrical, optical.

Liquid Crystals.

Option C6- Liquid Crystals -Garrett Acker. C Describe the meaning of the term liquid crystals. Liquid crystals are fluids that have physical properties.

Soft Matter Soft matter does not exhibit the crystalline order (Lect. 7b, Slides 1,2) that is characteristic of most hard matter (except amorphous solids).

Frequency dependence of the anomalous Hall effect: possible transition from extrinsic to intrinsic behavior John Cerne, University at Buffalo, SUNY, DMR.

Main points of study in Materials Chemistry and related IT learning materials Dr Patrio Chiu.

Ferronematic Fredericksz Transition LCMRC researchers are exploring the recently discovered ferronematic liquid crystal phase, revealing a dramatic polar.

G.B. McFadden and S.R. Coriell, NIST and R.F. Sekerka, CMU Analytic Solution of Non-Axisymmetric Isothermal Dendrites NASA Microgravity Research Program,

New frontiers in anisotropic fluid–particle composites by Susanne Klein, Peter Raynes, and Roy Sambles Philosophical Transactions A Volume 371(1988):

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of flexible bis-acids and a mixture of flexible.

Electro-Optic Studies of Charge Density Wave Conductors Joseph W. Brill, University of Kentucky, DMR One-dimensional charge-density-wave (CDW)

The Liquid Crystalline State of Matter: From the Laboratory… to the Shopping Mall Paul M. Goldbart Department of Physics, Seitz Materials Research Laboratory,

Equilibrium Pathway of Polymer Nanometer Films Equilibrium Pathway of Polymer Nanometer Films Ophelia K. C. Tsui, Trustees of Boston University, DMR

Effect of Temperature on Rheological Properties of Corn Starch Tamara Dapčević, Miroslav Hadnađev Institute for Food Technology, Bulevar cara Lazara 1,

Interfacial Characteristics of Semi fluorinated Polymers Dvora Perahia (Clemson University) DMR Thin layers of semifluorinated and fluorinated.

__________________________________________________________ AMR ATTIA AMR ATTIA __________________________________________________________________________.

Collaborative Research: Analysis of Defects and Their Causes in Bulk Aluminum Nitride Crystals – Jharna Chaudhuri, Texas Tech University, Lubbock, TX DMR

Chapter 14/15- Molecular weight, M w : Mass of a mole of chains. 3 Tensile strength (TS): --often increases with M w. --Why? Longer chains are entangled.

The deposition of amorphous indium zinc oxide (IZO) thin films on glass substrates with n-type carrier concentrations between and 3x10 20 cm -3 by.

Influence of Branch Content on the Mechanical Properties of metallocene LLDPEs Ashraful Islam, Ibnelwaleed A. Hussein Department of Chemical Engineering.

National Science Foundation GOALI: Epitaxial Growth of Perovskite Films and Heterostructures by Atomic Layer Deposition and Molecular Beam Epitaxy John.

Swelling Dynamics of Liquid Crystalline Elastomers

Electrooptic Materials Based On Molecular Compasses And Gyroscopes: Effects Of Symmetry, Conjugation, And Correlated Dipolar Rotation Miguel A. Garcia-Garibay,

Liquid Crystal Elastomer Response to Light Rafael Soares Zola CPIP-LCI Advisor: Peter Palffy-Muhoray.

Complex Fluids Group University of São Paulo, Brazil LYO-BANANA MESOPHASES COMPOSED BY A MIXTURE OF APOLAR SOLVENTS AND BENT- SHAPED MOLECULES O. G. Martins.

Accomplishments in the second year: Developed a phase field theory of photopolymerization induced crystallization in a blend of crystalline polymer and.

Modern Materials BLB Chapter 12.

How are Liquid Crystals like Superconductors? Charles Rosenblatt, Case Western Reserve University, DMR Many seemingly different phase transitions.

Synthesis and Characterization of Fluorescent Acenequinones as Dyes for Guest-Host Liquid Crystal Displays Timothy M. Swager, Massachusetts Institute of.

Design Guidelines Injection Moulding Engineering Design.

COPE PRESENTATION Process Modeling and Ice Nuclei.

Liquid Crystals Thermotropic (temperature dependent)

Actuators Based on Liquid Crystalline Elastomer (LCEs) Materials

Motivation Experimental method Results Conclusion References

4EOBBA/2RP/nSBZ Networks Results/Observations Synthetic Methodologies

Macroscopic Dynamics of Ferromagnetic Nematics

Centro de Investigación y de Estudios Avanzados del Institúto Politécnico Nacional (Cinvestav IPN) Palladium Nanoparticles Formation in Si Substrates from.

Liquid Crystals The Fourth State of Matter? Dr. Vance Williams

Understanding the observation of large electrical conductivity in liquid crystal-carbon nanotube composites S. Krishna Prasad and V. Jayalakshmi Centre.

POLYMERS Polymer Technology Thermoplastic Polymers

New Idea Series Simulations of materials – focusing on

What Shapes Can You See in this Picture?

Literature seminar Yuna Kim

Dynamic Anchoring of Nematic Liquid Crystals by Flowing Oil

Kirigami Nanofluidics

1 WRITE YOUR PRIZE HERE 2 WRITE YOUR PRIZE HERE WRITE YOUR PRIZE HERE

•The Twist-Bend Nematic phase

Proteins previously reported in published MALDI IMS studies and their frequency of observation in the present study. Proteins previously reported in published.

Photomechanical bending of salicylideneaniline crystals

Received: May 25, 2012 Revised: August 8, 2012

Justin Mathew et al. Int J Spine Surg 2013;7:e29-e38

Table 6. Solar module specification

Fig. 3 Voltage-driven phase switching in a 1T-TaS2 nano-thick crystal.

Presentation transcript:

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 1 Liquid Crystalline Elastomers as Artificial Muscles P.E. Cladis Advanced Liquid Crystal Tech. Summit, NJ

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 2 Stress-Strain in Smectic A SLCEs Strasbourg ILCC 1998 – Nicole Assfalg Alumni from Heino Finkelmann's Group See also: Liquid crystalline elastomers as artificial muscles

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 3 Spontaneous Shape Change: Sample Preparation P.E. Cladis: Phase Transitions in Liquid Crystalline Elastomers:A Fundamental Aspect of LCEs as Artificial Muscles in Interactive Dynamics of Convection and Solidification, P. Erhard, D.S. Riley and P.H. Steen (eds), Kluwer Academic Publishers, Dordrecht (2001) p. 123.

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 4 Spontaneous Shape Change: Result

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 5 Goal 1998 Symposium on Artificial Muscles and Liquid Crystalline Elastomers Partially supported by NSF DMR

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 6 First works

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 7 Graduation First Results: Thin samples Kyushu University 2001

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 8 Swelling Dynamics: Samples PR E 69, (2004) PR E 69, (2004) Swelling dynamics of liquid crystal elastomers swollen with low molecular weight liquid crystals Yusril Yusuf,* Y. Ono, Y. Sumisaki, P. E. Cladis†, H. R. Brand, H.Finkelmann,Shoichi Kai‡ Sample 5CB & MBBA swelling agent Monomer and Polydomain LCEs From Heino Finkelmann’s Lab 150  m thick, 1x0.5mm 2 Viewed in Polarizing Microscope Swollen Nematic LSCE

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 9 MONO1 Dimension || n does not change! PR E 69, (2004)

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 10 MONO2 and POLY PR E 69, (2004)

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 11 Picture PR E 69, (2004)

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 12 Swelling Dynamics POLY: 5CB ~8min MBBA ~6min MONO: 5CB ~16min MBBA ~30min Inverse swelling ratio PR E 69, (2004)

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 13 Swelling Temperature Dependence Temperature dependence None for Dry POLY Lots for MONO and Swollen POLY PR E 69, (2004) MONO1 POLY  Dry swollen

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 14 Electric Field Yusuf et al. PRE 71, (2005)

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 15 Voltage Dependence Yusuf et al. Low-voltage-driven electromechanical effects of swollen liquid-crystal elastomers... Threshold about 1.5V independent of sample thickness – typical for LMWLCs Better reorientation, larger shape change – cf Slide 8

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 16 Temperature Dependence Yusuf et al. PR E June 2005 MONO1 – maximum  depends on sample thickness, here about 20  m MONO2 – 

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 17 Characteristic Times,  Yusuf et al. PR E June 2005 Switch onSwitch off

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 18 Voltage Dependence of 1/  Yusuf et al. PR E June 2005

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 19 Voltage Summary Yusuf et al. PR E June 2005

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 20 Acknowledgements We thank the IMA for the opportunity to present these results. Yusril Yusuf,* Y. Ono, Y. Sumisaki, Jong-Hoon Huh, H. R. Brand, H.Finkelmann, Shoichi Kai‡ Nicole Assfalg PEC thanks the Japan Society for the Promotion of Sciences for a Research Prize enabling this research.

May 24, 2005 Advanced Liquid Crystal Technologies, Inc. 21 Kyushu 3/2001