Podcasts by Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues

Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues

This ICAM workshop brought together junior and senior researchers working on the emergent properties of soft active matter. It focused on nonequilibrium collective behavior and locomotion in active systems, including mixtures of cytoskeletal filaments and motor proteins, the cell cytoskeleton, bacteria colonies, collections of cells in elastic matrices or living tissues, plankton in the ocean, insects or animal groups and vibrated granular layers. By bringing together researchers from a variety of disciplines we hope to stimulate new interactions and ideas in this rapidly evolving field.

Further podcasts by Institute for Complex Adaptive Matter (ICAM)

Podcast on the topic Wissenschaft

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Dynamics of Active Cellular Response Under Mechanical Stress from 2009-05-21T07:00

This talk discusses various types of forces that cells often experience. Rumi De also explains how these forces may influence cellular activity.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Endothelial Cell Network Assembly on Soft Subtrates from 2009-05-21T07:00

Cynthia Reinhart-King explains how substrates play a large role in cell connectivity. The effects on cell assembly are also examined.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Response of Cells to Nonlinear Elastic Substrates from 2009-05-21T07:00

This presentation discusses tissue stiffness and how cells react to this type of stress. In addition, the effects of gels on cell signaling are also examined.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
A Model for Surface Tension in Cell Aggregates from 2009-05-21T07:00

Lisa Manning examines the liquid-like properties of cell movement using a 3D interaction model for embryonic tissue. This is a realistic model that takes many physical forces into account.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Multi-cellular Substrate Deformation Guides Collective Migration from 2009-05-21T07:00

This talk examines substrate-cell interactions and explains how these connections influence collective migration.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
F-actin Dynamics in Human Skin Cells Directs Velocity of Cell Migration from 2009-05-21T07:00

This presentation examines the behavior of Candida albicans and Saccharomyces cerevisiae. In particular, there is a focus on the actin modelling dynamics of each organism.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Session VI Discussion from 2009-05-21T07:00

A discussion with presenters from Session VI: Rumi De, Cynthia Reinhart-King, Paul Janmey, Lisa Manning, Thomas Angelini, and Torsten Wöllert.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Assembling Contractile Actomyosin Bundles from 2009-05-20T07:00

Margaret Gardel explains the steps involved in building a contractile bundle for cell adhesion: actomyosin remodeling, F-actin network contraction and stress fiber formation.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Cell Dynamics and Active Gels from 2009-05-20T07:00

This presentation discusses cellular stability at the cortical layer. Internal cell elasticity and the effects of mechanical stress are also examined.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Out-of-equilibrium in vitro Actin Networks from 2009-05-20T07:00

This talk examines the strength of actin networks as a function of physical properties, such as myosin concentration and rupture events.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
The Transportation System Inside a Living Cell from 2009-05-20T07:00

An overview of the components involved in cellular transport systems. The mechanisms of active transport and filament switching are also discussed.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Theory of Filament Depolymerization by Motor Proteins from 2009-05-20T07:00

This presentation discusses the kinesins involved in microtubule depolymerization and the factors that determine the depolymerization rate.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Invasive Patterns of Malignant Brain Tumors from 2009-05-20T07:00

Evgeniy Khain provides some background on primary brain tumors and discusses how tumor cell growth depends on the level of adhesion.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Session IV Discussion from 2009-05-20T07:00

A discussion with presenters from Session IV: Margaret Gardel, Jean-Francois Joanny, Simone Koehler, Clare Yu, Meredith Betterton and Evgeniy Khain.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Growth Induced Ordering and Streaming in Dense Bacterial Populations from 2009-05-20T07:00

Lev Tsimring explains how growing bacteria behave similarly to a granular material system and how differential growth can lead to population instability.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Self-Propelled Particles: From Microdynamics to Hydrodynamics from 2009-05-20T07:00

This talk characterizes the hydrodynamics of liquid crystal systems and examines fluctuations in bulk systems.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Hydrodynamics and Rheology of Active Polar Films from 2009-05-20T07:00

This presentation discusses the equations of active hydrodynamics, the viscosity of polar systems, and the spontaneous flow of polar and non-polar systems.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Electrically Driven Dynamics of Small Particles in Liquid Crystals from 2009-05-20T07:00

Oleg Lavrentovich discusses the effects that an electric field can have on simple crystal particles within a complex medium.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Velocity and Stress Correlations in Suspensions of Swimming Microorganisms: Theory and Simulation from 2009-05-20T07:00

This presentation discusses a model that simulates the behavior of swimming microorganisms. This model takes into account the effects of hydrodynamic interactions and large scale flows.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Session V Discussion from 2009-05-20T07:00

A discussion with presenters from Session V: Lev Tsimring, Aparna Baskaran, Gareth Alexander, Luca Giomi, Oleg Lavrentovich, and Patrick Underhill.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
How Harvester Ant Colonies use Interaction Networks to Regulate Foraging from 2009-05-19T07:00

Describes how ant colonies are able to react to changing environmental conditions with each ant knowing only limited local information.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Collective Motion and Decision Making in Animal Groups from 2009-05-19T07:00

An analysis of the movement of various animal groups and an explanation as to how one animal's motion may be altered by the movement of other animals nearby.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Collective Motion: Some Models and Experiments from 2009-05-19T07:00

A look into different examples of collective motion and an explanation of various models that reproduce this behavior.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Evolution of Collective Behavior in Animal Groups from 2009-05-19T07:00

This talk discusses the evolutionary reasons behind collective behavior. Different models for collective behavior are also presented.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Short Talks on Various Biological Networks from 2009-05-19T07:00

A series of short presentations covering the following areas: bioenergetic networks, actin networks, crystalline elastomers,"bleeding"plastic, ABC transporters, single molecule biophysics, asymmetr...

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Physics at Work in Cell Biology and Cancer from 2009-05-19T07:00

This talk discusses the underlying physical forces (such as cell stress and homeostatic pressure) involved in tissue formation and cell biology.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Swarming and swirling: from granular rods to bacterial colonies from 2009-05-18T07:00

This presentation examines the movement of particles due to vibration and the resulting interactions between them.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Active Emulsions from 2009-05-18T07:00

This talk explores the properties and uses of systems whose particles can chemically change over time and interact with each other.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Mechanics of Tissue Growth from 2009-05-18T07:00

An examination of cell and tissue growth, with a focus on how different cell replication rates and surface pressures influence the formation of tissue.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Soft Squishy Tissue: The Depth Dependent Mechanical Properties of Articular Cartilage from 2009-05-18T07:00

This talk discusses the movement of cells at different depth levels within cartilage. In addition, a study designed to determine how cartilage responds to shear stress is outlined.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Session I Discussion from 2009-05-18T07:00

A discussion with presenters from Session I: Arshad Kudrolli, Seth Fraden, Jacques Prost and Itai Cohen.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Collective Dynamics in Swimming E. Coli Bacteria from 2009-05-18T07:00

This presentation discusses the various chemical signals and gradients that play a role in the swimming motion of E. coli cells.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Genomics of Emerging Order Within a Biofilm from 2009-05-18T07:00

An examination of the biofilm produced by Myxococcus xanthus bacteria. The cellular genome is examined for characteristics that might influence the manner in which these biofilms are formed.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
The Nonlocal Hydrodynamics of Swimming Cells from 2009-05-18T07:00

This presentation discusses the movement of swimming cells. The effects of interaction between the flagella of different cells and the effects of wave geometry are also discussed.

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Soft Active Materials: From Granular Rods to Flocks, Cells and Tissues
Foraging Strategies for Starving and Feeding Amoeba from 2009-05-18T07:00

This talk discusses how different environmental conditions affect the growth strategies of amoeba cells.

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