[1] In 1963 Jan Sengers, together with his spouse Anneke Levelt Sengers,[3] emigrated to the United States to become a physicist at the National Bureau of Standards (NBS) that became the National Institute of Standards and Technology (NIST) in 1988.
While at the University of Maryland he also remained affiliated with NBS/NIST, first on an intermittent basis from 1968 to 2001 and subsequently as a guest researcher from 2001 to 2022.
[1] At the Van der Waals Laboratory in Amsterdam, Jan Sengers performed some breakthrough experiments showing that the thermal conductivity of a fluid diverges at the critical point.
[4][5] After his arrival in the US, he was the first to obtain some rigorous results concerning the density corrections beyond the dilute-gas limit for the transport properties of a gas of hard spheres.
Mikhail Anisimov joined the research group at the University of Maryland in 1994 and together[7] Sengers and Anisimov further developed the crossover theory for critical phenomena, including crossover from Ising-like critical behavior to triple-point behavior of polymer solutions.