Physicists from the University of Washington devised a new method of registration of nanoparticles, which can not only calculate the mass, but the size of these objects. Article scientists have not yet accepted for publication, but its preprint available at arxiv.org.
Physicists have found that drops of liquid is subject to customary laws of friction. Article scientists appeared in the journal Physical Review Letters, and its brief cites Physical Review Focus.
Traditionally, friction is proportional normal component of reaction force support. In fact, this means that, for example, heavy box to pull on the surface harder than light. As it turned out, if the liquid comes to a totally different situation.
In the study researchers also include a few drops of oil volume mikrolitramy a special mechanical arm that revolved around some axis. Thus scientists can change the angle of arm and speed (which allowed researchers to control the different forces acting on the drop).
Behavior of liquid znimalasya located next to the camera.
Physics were able to identify so-called hyralnyh metamaterialov reverse the Casimir effect, ie these materials vidshtovhuyutsya convergence of nanometers at a distance. Research article appeared in the journal Physical Review Letters, and its summary is given in the press release Eymsa Laboratory, whose staff participated in the work.