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

Slides:

Advertisements

Similar presentations

Determination of Creep Mechanisms and Modeling Low Temperature Creep of Two-Phase Titanium Alloys Sreeramamurthy Ankem, University of Maryland, College.

Advertisements

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

Design and Deposition of Electroactive Polymers for Light-emitting Diodes and Photovoltaics: DMR Mary Galvin, University of Delaware and Lewis.

Thermal expansion in (M’ III 0.5 M V 0.5 )P 2 O 7 related to cubic ZrP 2 O 7 Angus P. Wilkinson, Georgia Institute of Technology, DMR Thermal expansion.

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

1 Example of PDLC architectural window. 2 Polymer Dispersed Liquid Crystal (PDLC)

Region of maximum conductivity 1% 88% 2%31% 54% 64% 1% Fraction crystallinity Solid polymer electrolytes for lithium ion batteries Janna K. Maranas, Pennsylvania.

Multifunctional electronic complex oxides with coexisting properties such as polarization, magnetization, and strain states are attracting significant.

Suppression of Filler Disrupting Morphology in Nanofilled Block Copolymer Films with Cold Zone Annealing (CZA) Alamgir Karim, University of Akron, DMR.

Figure 2. Directional crystal growth of polyethylene oxide (PEO) upon exposure to truncated intensity profile created the Iris diaphragm showing the spherulitic.

Highly Conductive Solid-State Polymer Electrolyte Membrane for High Temperature Operations Thein Kyu, University of Akron, DMR The highlights of.

Hydrogen-Bonding Assisted Self-Assembly of Lamello- Columnar Phases from Discotic Supermolecules L ei Zhu (University of Connecticut) DMR Hydrogen-bonding.

Fig. 1: Structure of metallo-supramolecular polymer formed by complexing a bifunctional ligand E5 with Zn(II) Metallo-supramolecular polymers, formed via.

Self-Assembled Nanoparticle Array for Spintronics and High Frequency Materials DMR PI: Hao Zeng We have combined self-assembly with photolithography.

Polar Planar vs. Polar Vertical Reverse Tilt Domain Walls Charles Rosenblatt, Case Western Reserve University, DMR Left: Polarized photomicrograph.

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

Bridging Atomistic to Continuum Scales – Multiscale Investigation of Self-Assembling Magnetic Dots Katsuyo Thornton (University of Michigan Ann Arbor)

Relations between Structure, Phase Formation and Phase Transitions in Supercooled Metallic Liquids and Glasses Kenneth F. Kelton, Washington University,

Sridhar Seetharaman Carnegie Mellon University Department of Materials Science and Engineering Pittsburgh, PA Development of a High Temperature.

Nature of Pure and Dirty Liquid 3 He - Fundamental Investigations and Educational Activities Yoonseok Lee (University of Florida) DMR The effect.

MD Simulations of Fast Li-ion Battery Charging Per Arne Rikvold, Florida State University, DMR Li-ion batteries are an important portable energy.

CAREER: Self-Assembly of Polyunsaturated Lipids and Cholesterol In The Cell Membrane. Linda S. Hirst, University of California-Merced, DMR Phase.

Objectives Design, synthesis, and systematic study of “smart” water-soluble polymers that respond sharply and reversibly (first-order transitions) to temperature.

Materials World Network: The Materials Computation Center Outreach David M. Ceperley, University of Illinois at Urbana-Champaign, DMR This Travel.

EAGER: Chemical Design for Controlling Electronic Properties of Organic Semiconductors and Molecules via Edge-On Gating Luping Yu, University of Chicago,

Discovery of extended carbon dioxide carbonates Choong-Shik Yoo, Washington State University, DMR Project Goal: Investigate new states and novel.

Nanostructured Polymers for Brønsted and Lewis Acid Catalysis via Monomer Self-assembly Douglas Gin (University of Colorado at Boulder) DMR Nanostructured,

Photoinduced magnetism in Rb j Co k [Fe(CN) 6 ] l.nH 2 O New “assembly at interfaces” method uses benchtop chemistry to produce nanoscale films. Although.

National Science Foundation Using Ice to make Advanced Energy Systems Rajendra K. Bordia, University of Washington, DMR Outcome: Researchers at.

Nanoscale Segregation in Next-generation Hard-Drive Thin Films Gregory B. Thompson, University of Alabama, Tuscaloosa, DMR Intellectual Merit Research.

Highly conductive, completely amorphous, and stretchable solid lithium-ion polymer electrolyte membranes Thein Kyu, University of Akron, DMR Goal:

Determination of Activation Energies and Modeling of Low Temperature Creep of Alpha, Alpha-Beta, and Beta Titanium Alloys S. Ankem, FASM, University of.

We have advanced the methodologies that are available to access well-defined functional polymers by simple and versatile routes that involve the selective.

Manipulation of Structural and Physical Properties by Chemical Doping in Sr 3 (Ru 1-x Mn x ) 2 O 7 E. Ward Plummer, Louisiana State University & Agricultural.

The research aims to establish the conceptual and phenomenological foundation for the science of polymer dynamics under large deformation. Progress has.

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

It is widely appreciated that the supramolecular ordering of polymers, surfactants and liquid crystals (LCs) can be impacted by confinement. In many cases,

Search for Electron-Deficient Semiconducting Polymers to Rival Fullerenes Luping Yu, University of Chicago, DMR This project is aimed at developing.

LCMO layered Noise Studies of Disordered Condensed Matter M. B. Weissman, UIUC, DMR Colossal Magnetoresistive (CMR) materials have inspired interest.

Frustrated magnets exhibit novel and useful properties, including dramatic field-sensitive properties and suppressed magnetic ordering temperatures. To.

Accomplishments in the third year: Thus far, three papers have been published in 2008 and one manuscript entitled “Induced smectic phase in mixtures of.

 Purpose/Relevance: Improved sensitivity, selectivity, and adaptability for detection of low vapor pressure explosives such as TNT, RDX, PETN, etc. 

Exploring the effect of uniaxial strain in Ba(Fe 1-x Co x ) 2 As 2 Stephen D. Wilson, Boston College, DMR Physical Review Letters 108, (2012).

Spatio-temporal emergence of mesomorphic patterns in mixtures of rigid rod and liquid crystalline polymers, DMR Thein Kyu, University of Akron,

Fundamentals of Multicomponent Diffusion in Multiphase Alloys Yongho Sohn, University of Central Florida, DMR Motivation: Diffusion plays an important.

Spin-orbital effects in frustrated antiferromagnets Oleg A. Starykh, University of Utah, DMR Electron spin resonance (ESR) measures absorption.

Tandem Catalytic Polymerization as Efficient Method to Synthesize Organic Nanoparticles Zhibin Guan, University of California - Irvine DMR Highly.

From quasi-2D metal with ferromagnetic bilayers to Mott insulator with G-type antiferromagnetic order in Ca 3 (Ru 1−x Ti x ) 2 O 7 Zhiqiang Mao, Tulane.

Bridging Atomistic to Continuum Scales – Multiscale Investigation of Self-Assembling Magnetic Dots in Heteroepitaxial Growth Katsuyo Thornton, University.

New developments in Energy Havesting: US-China collaboration on Magnetocaloric Effect Materials Joseph H. Ross Jr., Texas A&M University Main Campus, DMR.

When a new material is created through the combination of several components all properties are affected, not just the ones of particular interest. The.

Condensed Matter Theory in the UIUC Physics Department

GRADUATE PROGRAMS. Chemistry M.S The Chemistry M.S. at the University of Central Florida is aimed at preparing students for careers in the chemical industry.

Broader Impact: Education The PI’s group moved from NCSU to OSU as this renewal was just beginning. Dr. Marcin Wachowicz began as a postdoctoral fellow.

The research aims to gain basic knowledge of polymer dynamics under large deformations. This task can be experimentally challenging due to finite size.

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

Nuclear magnetic resonance study of organic metals Russell W. Giannetta, University of Illinois at Urbana-Champaign, DMR Our lab uses nuclear magnetic.

Non-Fermi liquid behavior with and without quantum criticality in Ce 1−x Yb x CoIn 5 Carmen C. Almasan, Kent State University, DMR One of the greatest.

Spin at the Nanoscale: Material Synthesis and Fundamental Physics Min Ouyang, University of Maryland – College Park, DMR In the FY08, we continued.

Polymer Chain Length and Branching Effects on the Viscoelastic Bulk Modulus and Structural Recovery at High Pressure Sindee L. Simon, Texas Tech University,

National Science Foundation Outcome: Researchers at the University of Florida have directly measured the mechanism that creates frequency-dependent material.

Control of Magnetism in Prussian Blue Analogue Films Mark W. Meisel, University of Florida, DMR Control of the magnetic properties of synthetic.

Thomas Ihle and Daniel Kroll, North Dakota State University DMR and DMR Mesoscale Simulations of Complex Liquids Computational studies.

Polyatomic Adsorbates on Carbon Nanotube Bundles Aldo D. Migone, Southern Illinois University Carbondale, DMR Intellectual merit: Experimental.

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

Photodecrease Photoincrease

Materials Computation Center, University of Illinois

Can Liquid Crystals / Polymers

Optical Properties of Molecule-Based Magnets

Competition Between Mesogens in Pyridone-based Supramolecular Calamitic, Banana and Discotic Liquid Crystals. Kurt N. Wiegel, Department of Chemistry,

Presentation transcript:

Accomplishments in the second year: Developed a phase field theory of photopolymerization induced crystallization in a blend of crystalline polymer and photo-curable monomer. Applied this phase field theory to directional crystal growth in reactive polymer mixtures driven by photo-intensity gradient. Fabricated various photonic crystals using wave interference holographic lithography. Discovered an induced smectic phase in a nematic mixture containing a non-mesogenic functional hyperbranched polyester. Objectives: Fabricate photonic crystals based on wave interference holographic photolithography Elucidate mechanisms of photopolymerization induced crystallization or liquid crystal ordering Photopolymerization Induced Phase Transition and Evolution of Morphology Landscape in Holographic Polymer Dispersed Liquid Crystals and Photonic Crystals Thein Kyu, University of Akron, DMR Fig. 1. (a) Chemical structure of as-synthesized hyperbranched polyester, and (b) a 80/20 mixture of E7/hyperbranched polyester showing (left) an induced focal conic smectic phase from non-mesogenic HBPEAc-COOH and E7 nematic system at ambient and (right) nematic disclination at 65 o C above the T NI of E7. (In collaboration with T. Nishikubo’s group of Kanagawa University, Japan). Unusual Discovery: During the holographic photo-patterning of various conductive crystals and liquid crystals, we stumbled on a very interesting phenomenon of induced smectic phase from a hyperbranched polyester/nematic LC mixture both of which have no known smectic phase in their neat forms. The present work is the first to find an induced smectic phase in an amorphous hyperbranched system where there is no mesogenic group in the hyperbranched molecule. It is an outcome of our international collaboration with Professor T. Nishikubo of Kanagawa University.

Collaborations: Our recent international collaboration has resulted in a new discovery on induced smectic phase in mixtures of nematic liquid crystal and non-mesogenic hyperbranched (HB) polyester (In collaboration with T. Nishikubo’s group of Kanagawa University, Japan). This induced smectic phase has striking similarity to that found in a binary nematic system by the PI’s group about a decade ago and is also similar to the work in progress in collaboration with Dean Shila Garg’s group at Wooster College. Exchange of student and faculty visits is expected in coming years. Broader Impact Students Involved: Mr. P. Dayal graduated in May 2007, with a Ph. D. dissertation on “Modeling of electro-jet spinning of crystal-liquid crystal blends ”. He is now working as a post-doctoral research fellow under Professor A. Balazs at University of Pittsburgh. Mr. R. A. Matkar graduated in August 2007 with a thesis entitled “Phase diagram and dynamics of solid-liquid phase transitions of binary crystalline polymer blends,” is now working as a postdoctoral fellow under Prof. M. Chowdury at Lehigh University. Mr. P. Rathi (Ph. D. Candidate, theory and simulation polymerization induced phase transitions) and Ms. S. Park, (Ph. D. Candidate, experimental phase diagrams and photopolymerization induced phase transitions) are expected to graduate within 6 to 9 months. Mr. N. Kim, who discovers an induced smectic-A phase in E7/HBPEAc-COOH mixtures, is a Ph. D. candidate working on photo-patterning of advanced materials. Mr. T. Hwang, a Ph. D. candidate is hired recently under the present grant to develop holographic glucose sensors for noninvasive detection in collaboration with Professor Jun Hu, Department of Chemistry at University of Akron. Education Outreach: A REU student, Garret O'Malley, a sophomore student from Physics Department, Bucknell University, PA, is receiving research training in the PI’s group. He has established a phase diagram of azobenzene/triacrylate system and subsequently performed wave interference holographic photolithography to fabricate photonic crystals. In addition, he is learning the computer codes for determining the coexistence lines of liquid-liquid and solid-liquid phase transitions. The PI gave a lecture on “Rhythms in Solidification of Soft matter: An Interdisciplinary Research” to a group of NSF-REU Summer students. Photopolymerization Induced Phase Transition and Evolution of Morphology Landscape in Holographic Polymer Dispersed Liquid Crystals and Photonic Crystals Thein Kyu, University of Akron, DMR