Women already at risk of having a stroke because they smoke cigarettes increase their stroke risk three-fold if they live with a spouse who smokes, a study conducted at the University at Buffalo has shown. The overall increase in risk of developing any form of stroke was more than three-fold in this group. On the other hand, non-smoking women whose spouses smoked did not show an increase risk of stroke.
New York engineers have developed a novel method for assembling nanoparticles into three-dimensional structures that one day may be used to produce new nanoscale tools and machines. The work could be an important step in fulfilling the immense potential of nanotechnology because it gives scientists and engineers improved control and flexibility in the creation of materials for the manufacture of many nanoscale devices. The researchers used non-uniform AC electric fields generated by microfabricated electrodes — which create a motion known as dielectrophoresis — to stack latex, silica or graphite microparticles into two- and three-dimensional structures of prescribed lengths and composition, held together by the electrical field.