18 novembro 2008

Nano

Peering into the micro world: A team of University of Michigan researchers has recently created a set of electron microscope images of carbon nanotube structures depicting images of U.S. President-elect Barack Obama. John Hart, leader of the research team says it wasn't a political statement, but an attempt to draw attention to what is possible these days with nanotechnology, and imaging at the very small scale.


Images of U.S. President-elect Barack Obama, each made with approximately 150 million tiny carbon nanotubes, are photographed using an electron microscope by University of Michigan Mechanical Engineering Department in this image released to Reuters November 10, 2008. The image, based on an original drawing by Shepard Fairey, is just wider than 500 microns and is made of approximately 150 million tiny carbon nanotubes, which is about the number of Americans who voted on November 4, according to John Hart at University of Michigan. (REUTERS/John Hart, Sameh Tawfick, Michael De Volder, and Will Walker/University of Michigan/Handout)


A Microelectromechanical system (MEMS) gear train manufactured on silicon. The larger gear at center is about 80 microns wide. (Institute of Micromachine and Microfabrication Research at Simon Fraser University)