heat | tribonet

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.

Temperature difference propels droplets

07.03.2018 tribonet 106 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. […]

3D-printed Structures Shrink when Heated

12.01.2018 tribonet 94 Views

Counterintuitive “metamaterial” may enable heat-resistant circuit boards. Almost all solid materials, from rubber and glass to granite and steel, inevitably expand when heated. Only in very rare instances do certain materials buck this thermodynamic trend […]

Samples of carbon nanotubes and polymeric phenol-formaldehyde materials hardened through baking at high temperature in the absence of oxygen: (a) a carbon nanotube forest; (b) a carbon nanotube/polymer nanocomposite; (c) a charcoal-like carbon nanotube/glassy carbon nanocomposite after baking at high temperature; (d) pure polymer (phenol-formaldehyde); (e) a charcoal-like glassy carbon block from baking a polymer at high temperature.

Glassy Carbon manufactured now with Less Heat

22.09.2017 tribonet 327 Views

Carbon nanotubes lower the transformation temperature of glassy carbon, possibly aiding manufacturers, MIT researchers report. Last winter, MIT researchers discovered that a phenol-formaldehyde polymer transformed into a glassy carbon material in a process similar to baking […]