by Manuel Sánchez — Atomic force mi­cros­co­py (AFM) is one of the most pow­er­ful tools in stu­dy­ing the sur­fac­es of any ma­ter­ial. So it should come as no sur­prise that it has been used in the stu­dy of vi­ral en­vel­op­es and bio­lo­gi­cal mem­branes. One of its great ad­van­tages...