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Cascade leading to the emergence of small structures in vortex ring collisions

Journal Article

When vortex rings collide head-on at high enough Reynolds numbers, they ultimately annihilate through a violent interaction which breaks down their cores into a turbulent cloud. We experimentally show that this very strong interaction, which leads to the...

Enhanced diffusion by binding to the crosslinks of a polymer gel

Journal Article

Creating a selective gel that filters particles based on their interactions is a major goal of nanotechnology, with far-reaching implications from drug delivery to controlling assembly pathways. However, this is particularly difficult when the particles...

Emergence of small scales in vortex ring collisions

Journal Article

This paper is associated with a video winner of a 2017 APS/DFD Gallery of Fluid Motion Award. The original video is available from the Gallery of Fluid Motion.

Publisher\textquotesingles Note: Hot particles attract in a cold bath [Phys. Rev. Fluids 2, 043103 (2017)]

Journal Article

Validated reconstructions of geometries of nasal cavities from CT scans

Journal Article

Developing validated objective measures of nasal airflow is paramount for improving the management of nasal obstruction. Nasal airflow can be studied objectively by simulating the flow in the computer. This requires a faithful reconstruction of the nasal...

A universal growth limit for circular lichens

Journal Article

Lichens fix carbon dioxide from the air to build biomass. Crustose and foliose lichens grow as nearly flat, circular disks. Smaller individuals grow slowly, but with small, steady increases in radial growth rate over time. Larger individuals grow more...

Local growth rules can maintain metabolically efficient spatial structure throughout growth

Journal Article

A ubiquitous feature of bacterial communities is the existence of spatial structures. These are often coupled to metabolism, whereby the spatial organization can improve chemical reaction efficiency. However, it is not clear whether or how a desired...

Physical and geometric constraints shape the labyrinth-like nasal cavity

Journal Article

The nasal cavity is a vital component of the respiratory system that heats and humidifies inhaled air in all vertebrates. Despite this common function, the shapes of nasal cavities vary widely across animals. To understand this variability, we here...

Controlling Polyelectrolyte Adsorption onto Carbon Nanotubes by Tuning Ion–Image Interactions

Journal Article

Understanding and controlling polyelectrolyte adsorption onto carbon nanotubes is a fundamental challenge in nanotechnology. Polyelectrolytes have been shown to stabilize nanotube suspensions through adsorbing onto the nanotube surface, and...

WAHC\textquotesingle18

Conference Paper

The 6th Workshop on Encrypted Computing and Applied Homomorphic Cryptography is held in Toronto, ON, Canada on October 19th, 2018, co-located with the ACM Conference on Computer and Communications Security (CCS). The workshop aims to bring together...

Optimal Design of Experiments by Combining Coarse and Fine Measurements

Journal Article

In many contexts, it is extremely costly to perform enough high-quality experimental measurements to accurately parametrize a predictive quantitative model. However, it is often much easier to carry out large numbers of experiments that indicate whether...

Local Pore Size Correlations Determine Flow Distributions in Porous Media

Journal Article

The relationship between the microstructure of a porous medium and the observed flow distribution is still a puzzle. We resolve it with an analytical model, where the local correlations between adjacent pores, which determine the distribution of flows...