Imagine A Droplet Sitting On A Rigid Surface Spontaneously Bouncing Up And Then Continuing To Bounce

Imagine a droplet sitting on a rigid surface spontaneously bouncing up and then continuing to bounce higher after each impact, as if it were on a trampoline. It sounds impossible, but it’s not. There are two key features to making such a trampolining droplet–one is a superhydrophobic surface covered in an array of tiny micropillars and the other is very low air pressure. The low-pressure, low-humidity air around the droplet causes it to vaporize. Inside the micropillar array, this vapor can get trapped by viscosity instead of draining away. The result is an overpressurization beneath the droplet that, if it overcomes the drop’s adhesion, will cause it to leap upward. For more, check out the original research paper or the coverage at Chemistry World.  (Video credit and submission: T. Schutzius et al.)

More Posts from Theidlerhour and Others

9 years ago
Astronauts Returning Home From The ISS Aboard A Not So Spacious Soyuz Capsule

Astronauts returning home from the ISS aboard a not so spacious Soyuz capsule

via reddit

9 years ago

The most beautiful part of your body is where it’s headed. & remember, loneliness is still time spent with the world.

Ocean Vuong, “Someday I’ll Love Ocean Vuong,” published in The New Yorker (via bostonpoetryslam)

9 years ago

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9 years ago

It doesn’t matter what they will make of you or your days: they will be wrong, they will miss the wrong woman, miss the wrong man, all the stories they tell will be tales of their own invention. Your story was this: you were happy, then you were sad, you slept, you awakened.

Jane Hirshfield, It Was Like This: You Were Happy (via maryfelicity)

9 years ago
The Tale Of Princess Kaguya (2013)
The Tale Of Princess Kaguya (2013)
The Tale Of Princess Kaguya (2013)

The Tale of Princess Kaguya (2013)


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9 years ago

fav japanese vine so far

9 years ago

Our universe is in many respects sublime. It prompts wonder but can be daunting — even frightening — in its complexity. Nonetheless, the components fit together in marvelous ways. Art, science, and religion all aim to channel people’s curiosity and enlighten us by pushing the frontiers of our understanding. They promise, in their different ways, to help transcend the narrow confines of individual experience and allow us to enter into — and comprehend — the realm of the sublime.

Cosmologist and particle physicist Lisa Randall on the sublime and the essential differences in how art, science, and religion make sense of the universe – wonderfully mind-expanding read. (via explore-blog)


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9 years ago

Goals:

1. Do science. 2. Advance the human race. 3. Make other people happy.

9 years ago

That is what learning is. You suddenly understand something you’ve understood all your life, but in a new way.

Doris Lessing, The Golden Notebook (via yesdarlingido)

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theidlerhour - Bricolage Brain
Bricolage Brain

"To awaken my spirit through hard work and dedicate my life to knowledge... What do you seek?"

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