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General Topics

Explained: How does a soccer ball swerve?

20.06.2018 tribonet 184 Views

The smoothness of a ball’s surface — in addition to playing technique — is a critical factor. It happens every four years: The World Cup begins and some of the world’s most skilled players carefully […]

MIT researchers have developed a new platform for microfluidics, using LEGO bricks. Shown here, fluid flows through tiny channels milled into the side walls of LEGO bricks.
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Microfluidics from LEGO bricks

02.05.2018 tribonet 264 Views

Fluid flows through tiny channels milled into the side walls of LEGO bricks. Image: Melanie Gonick/MIT. MIT engineers make microfluidics modular using the popular interlocking blocks. The field of microfluidics involves minute devices that precisely […]

friction real aparent area
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Guidance Notes on Friction

19.03.2018 tribonet 1,206 Views

In dry sliding between a given pair of materials under steady conditions, the coefficient of friction may be almost constant. This is the basis for two EMPIRICAL Laws of Sliding Friction, which are often known […]

In a time-lapse sequence, infrared imaging shows the temperature changes within a droplet of water as it moves across a treated silicon surface in response to temperature differences on that surface.
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Temperature difference propels droplets

07.03.2018 tribonet 281 Views

In a time-lapse sequence, infrared imaging shows the temperature changes within a droplet of water as it moves across a treated silicon surface in response to temperature differences on that surface. Image courtesy of N. […]

Contact Mechanics
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Contact Mechanics Book

06.03.2018 tribonet 172 Views

The Handbook on Contact Mechanics (Handbuch der Kontaktmechanik) co-authored by Honorary Professor of Tomsk Polytechnic University, head of the Department of System Dynamics and Friction Physics at Technical University Berlin, Valentin Popov, a TPU alumnus […]

Sharp knife high friction
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Sharp knives – high friction

28.02.2018 tribonet 1,220 Views

Trying to slice a tomato into thin slices with a dull knife can get a little scary. The harder the knife must be pressed downward before the skin is broken is directly related to the […]

placing droplets.
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Programmable droplets

16.02.2018 tribonet 46 Views

Using electric fields to manipulate droplets on a surface could enable high-volume, low-cost biology experiments. MIT researchers have developed hardware that uses electric fields to move droplets of chemical or biological solutions around a surface, […]