142: Molecular Valves

Science-fiction writers (and scientists) have been promoting molecular transistors since the 1950s, and we explore the history of why that hasn't happened yet. We start with the parallel sci-fi writer (and biochemist) Isaac Asimov's "molecular valves" and physicist Arthur von Hippel's "molecular engineering." We talk of military projects that failed, and theoretical ideas that take a lot of engineering to make them work.

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