Search for tag: "educational technology"

Why Do We Look Up at the Heavens? - Br. Guy Consolmagno

Why did we go to the Moon? Why does the Vatican support an astronomical observatory? These questions mask a deeper question: Why do individuals choose to spend their lives in pursuit of pure…

From  Kathryn Gentilello 10 Months ago 14 views 0  

Ordered and disordered motion in dense active materials - Ludovic Berthier

We discuss how the non-equilibrium driving forces introduced by the natural biological activity or by physical self-propulsion mechanisms generically affect the structure, dynamics and phase behavior…

From  Kathryn Gentilello 10 Months ago 33 views 0  

Local and global avalanches in sheared granular materials - Aghil Abed Zadeh

We perform a stick-slip experiment to characterize avalanches for granular materials. In our experiment, a constant speed stage pulls a slider which rests on a vertical bed of circular photoelastic…

From  Kathryn Gentilello 10 Months ago 19 views 0  

Exploiting disorder - Sid Nagel

We are taught to understand solids by considering ideal crystals. This approach becomes untenable as the amount of disorder increases; for a glass with no well-defined long-range order, a crystal is…

From  Kathryn Gentilello 10 Months ago 12 views 0  

The Topological Character of Smectics - Randy Kamien

Though the systematic use of topology to understand defects in ordered matter is now nearly 50 years old, the original work failed to completely characterize systems with broken translational order,…

From  Kathryn Gentilello 10 Months ago 16 views 0  

Symmetry Breaking during the Synthesis of Nanoparticles - Younan Xia

Symmetry breaking is a ubiquitous phenomenon that occurs spontaneously when a system is subjected to variations in size and/or perturbations in terms of thermodynamic parameters. As a stochastic…

From  Kathryn Gentilello 10 Months ago 42 views 0  

Fracturing of marginally stable structures: fiber networks and topological metamaterials - Xiaoming Mao

When conventional brittle materials break, long cracks form due to stress focusing at crack tips: a phenomenon explained by Griffith in the 1920s. In this talk, we will discuss two types of systems…

From  Kathryn Gentilello 10 Months ago 23 views 0  

Mechanics of Active Networks – Lessons from Fire Ant Aggregations - Shankar Lalitha Sridhar

Biological assemblies in nature are seen as active matter due to their ability to perform intelligent collective motion based on neighbor interactions and sometimes without any centralized control…

From  Kathryn Gentilello 10 Months ago 7 views 0  

"Cellular packing, mechanical stress and the evolution of multicellularity - Shane Jacobeen

The evolution of multicellularity set the stage for sustained increases in organismal complexity. However, a fundamental aspect of this transition remains largely unknown: how do simple clusters of…

From  Kathryn Gentilello 10 Months ago 8 views 0  

Cell contraction induces long-ranged stress stiffening in the extracellular matrix - Pierre Ronceray

Animal cells in tissues are supported by biopolymer matrices, which exhibit highly nonlinear mechanical properties. Here we show that this nonlinearity allows living contractile cells to generate a…

From  Kathryn Gentilello 10 Months ago 7 views 0