Carbon nanotubes: The weird world of 'remote Joule heating'
Minimizing Joule heating remains an important goal in the design of electronic devices1, 2. The prevailing model of Joule heating relies on a simple semiclassical picture in which electrons collide with the atoms of a conductor, generating heat locally and only in regions of non-zero current density, and this model has been supported by most experiments. Recently, however, it has been predicted that electric currents in graphene and carbon nanotubes can couple to the vibrational modes of a neighbouring material3, 4, heating it remotely5. Here, we use in situ electron thermal microscopy to detect the remote Joule heating of a silicon nitride substrate by a single multiwalled carbon nanotube. At least 84%of the electrical power supplied to the nanotube is dissipated directly into the substrate, rather than in the nanotube itself. Although it has different physical origins, this phenomenon is reminiscent of induction heating or microwave dielectric heating. Such an ability to dissipate waste energy remotely could lead to improved thermal management in electronic devices6."
Carbon nanotubes in biology and medicine: In vitro and in vivo detection, imaging and drug delivery
"Taking the outside view means using an estimate based on a class of roughly similar previous cases"
so the singularity by far is something after which we cannot predict how things are, but we're going to look at roughly similar cases for that?
I'm also an insider in this in the sense that I've been a professional software engineer for 16 years, dropped out of a phd program after passing qualification exam with a masters in compsci and eng, so yes, I am trying to imagine possible outcomes and look at trajectories and I hope other people with training on this board are doing the same.
The comparisons people generally make are to agriculture and industrialization.
Okay. Part of my academic background is physics, including nanoscale physics- but if anything, being half-educated about it makes me reluctant to speculate.
For example, there's a technology under development which would use nanotu... (read more)