Hamza Khattak

Research associate at McMaster University. Also dabble in photography.

[Samantha McBride @Sam_A_McBride]

High-speed video of micro-droplets being deposited from an evaporating thin film to leave behind a pattern of crystalline clusters https://t.co/XBXUIhHi3g

[Liquids&Elasticity LAB @Princeton @LiquidsLab]

Oh, snap - now soft robots 🐙 can play ping pong 🏓 ! @tomzinzin29 @Barathvenk show that folding a strip increases snapping speed and enables programmability.
https://t.co/cDitdX1ckB

[Lightsmith/Lumifèvre. @AaronSlepkov]

I prefer our original title:
Microwave Ovens: now you're cooking with radar!

"Why can't you put metal in a microwave oven?". Most of the time you can!

[Harris Lab @FluidDanamics]

Latest from the #harrislab now on @arxiv!

The competition between capillary attraction and magnetic repulsion leads to a tabletop SALR (short-range attraction, long-range repulsion) system, with patterns familiar to analogous microscale systems! 🧜‍♀️🥣

https://t.co/KsE02DrwpV

🧵

[Physical Review Fluids @PhysRevFluids]

Many aquatic creatures burrow into sandy beds underwater to prey or escape from currents. Check out the striking experiments conducted by @ArshadKudrolli and his team as they investigate this locomotion using biomimetic magnetoelastic robots! See more @ https://t.co/PYxJ8dmMQQ.

[Jonathan Pham @JonTPham]

Congrats to @KrishnaroopC for his paper on visualizing how small dye molecules penetrate and diffuse into polymer coatings! Our first attempt with confocal microscopy to directly see penetration. Nice collaboration with @riddhis_life and the Ober group.

https://t.co/otWrrer3uU

[Nicolas Vandewalle @vdwnico]

Our last paper in @PhysRevFluids with my PhD student @DelensMegan introduces induced capillary dipoles to address particle tilting when accurately measuring capillary forces. #CapillaryScience #SelfAssembly @UniversiteLiege

https://t.co/1ULpiPEsWE

[Physical Review Letters @PhysRevLett]

Dropped plastic bottles containing swirling water bounce significantly less than bottles containing standing still water after impacting the floor
Letter: https://t.co/WJ6B4i3OUH
Focus: https://t.co/LlUxiFf48G

[Fernando Donado @Fernand31028044]

In our recent work (Scientific Report, open access), by varying the depth of the parabolic concavity, we can control the parabolic potential, which tunes the particle concentration, which controls the crystallisation rate.
https://t.co/M6wEodhnnt

[Jonathan Pham @JonTPham]

New paper by, a now graduated, Justin Glover! We found that creasing occurs in soft, adhesive friction. Interfacial strength and slip within crease surfaces play key roles. Read it here @NatureComms. A great collaboration with Rong Long and Xingwei Wang. https://t.co/SKfKnKDhd8

[Advanced Portfolio @AdvPortfolio]

Conventional soap bubbles don't last long, in part because gravity induces liquid drainage, leading to instability.

When sound waves counteract the effects of gravity, bubbles can be kept intact for hours.

Read the article: https://t.co/8y2ZYOZ2yA

[Alban Sauret @AlbanSauret]

How does a cohesive granular medium collapse? Our collaboration with Adrien Gans and many others is now online in @JFluidMech. In this work, we look at the role of cohesion on the stability of the column, its failure, and the final geometry https://t.co/pGuQ7W3MNg

[Carmen Lee @carmlingling]

I’m beyond speechless! Thank you @ApsDsoft for the opportunity and for organizing such an amazing session.

[Physical Review Fluids @PhysRevFluids]

Using elegant experiments and a theoretical model, Druecke et al. show how compressed floating granular rafts can fail in surprisingly different ways: by ejecting individual particles or collapsing like a sheet. See more here. https://t.co/YPv9I2eNJt #FluidDynamics #GranularFlow

[Fluids, Interfaces & Transport Laboratory @ UIUC @FengFluidsLab]

Happy to share our recent work on contaminated bubble bursting just published @NaturePhysics, showing oil-coated bubble bursting enhance aerosol formation and transmission by producing jets that are smaller and faster than those formed by pristine bubbles.https://t.co/Q6f1NYMmRp

[Douglas Holmes @dpholmes]

Ever wonder what happens when granular matter sticks to thin sheets?

As the grains pack and jam and clump the sheet warps and crumples, leading to three distinct regimes.
https://t.co/CPIu8kAluG

[Advanced Portfolio @AdvPortfolio]

The magnetic nonspherical particles shown here 📽️ are controlled by an external magnetic field, serving as efficient micromixers.

These particles can be used to achieve high-efficiency homogenization in lab-on-chip devices.

Learn more: https://t.co/lbZtiKkANZ

[Tom Schutzius @tomschutzius]

Happy to share our recent work with @DimosPoulikakos in @NaturePhysics—how freezing can drive wetting transitions on surfaces. You may think that ice is slow but crank up the camera’s frame rate and there’s plenty of surprising physics to see from this seemingly basic process 🧵

[Jonathan Pham @JonTPham]

New paper in @PhysRevLett on dynamic wetting on swollen (infused) elastomers. A custom setup to look at how liquid separates from a network near a moving contact line, which is related to drop sliding velocity and swelling ratio. https://t.co/OuECMzKlEY

[Soft Matter @softmatter]

Marangoni-induced reversal of meniscus-climbing microdroplets led by Jianxing Sun and Patricia B. Weisensee https://t.co/9E25A9j8FC