Thermal Colloids: Gold Nanoparticles, Graphene, and Nanoscale Logic

Science Corner dives into how heat controls the behavior of gold nanoparticles in colloids and how carbon substrates like graphene and carbon nanotubes alter melting points through subtle atomic interactions. We explore molecular dynamics insights showing that gold on graphene resists melting more than on CNTs due to increased contact area and Lennard-Jones forces, and we see how the shape and spreading of molten droplets depend on the surface. Finally, we connect these fundamentals to futuristic biology by showing how researchers turn thermally responsive nanoparticles into biological logic gates using fluorescence lifetime measurements.

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