COLLOQUIUM RE-SCHEDULED FROM JAN. 22 TO JAN 28
The PPPL function that reaches out to students, teachers and the general public through programs ranging from student internships to weekly talks on scientific topics from January through April.
When fossil fuel CO2 is released to the atmosphere, it essentially accumulates in the relatively rapidly cycling atmosphere / ocean / land biosphere carbon cycle. The atmospheric concentration of CO2 spikes through a time period of CO2 emissions, then is expected to slowly decline over the centuries as CO2 invades the ocean. The “lifetime” of fossil fuel CO2 in the atmosphere is a complicated question because there are multiple processes operating, but in general the CO2 concentration will be higher than natural for hundreds of thousands of years.
Researchers at Princeton University and the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have launched a new center to study the volatile heliosphere — a complex and frequently violent region of space that encompasses the solar system. This region is carved out by the solar wind — charged plasma particles that constantly stream from the sun — and gives rise to space weather that can disrupt cell phone service, damage satellites and knock out power grids.
This talk will present an overview of the technologies involved in the development of insect-size flying robots, from manufacturing and assembly to sensing and characterization. All of these areas present opportunities for interesting research, as there are few existing components or manufacturing techniques in the required size and weight range. Over the past 5-10 years, this research has led to the development of a “Robobee” – an 80 mg flapping-wing robot actuated by piezoelectric bimorphs, and capable of controlled hovering with >130 mg of lift.