Tarasov

The use of natural lacquer for preservation and decoration of various commodities is a remarkable invention. In Japan lacquer production dates back to the Neolithic Jomon period and has been mainly based on the sap extracted from the lacquer tree (Toxicodendron vernicifluum (Stokes) F.A. Barkley). However, it is still unclear, if lacquer production evolved in Japan independently or was introduced from Neolithic China, another centre of early lacquer production. A debate also revolves around the origin of the [...]

Particle sorting is a fundamental method in various fields of medical and biological research. However, existing sorting applications are not capable for high-throughput sorting of large-size (>100 micrometers) particles. Here, we present a novel on-chip sorting method using traveling vortices generated by on-demand microjet flows, which locally exceed laminar flow condition, allowing for high-throughput sorting (5 kilohertz) with a record-wide sorting area of 520 micrometers. Using an activation system based on fluorescence detection, the method successfully sorted 160-micrometer [...]