Yan Feng, Environmental Science Division, Argonne National Laboratory
September 18, 2014
Argonne National Lab, TCS Building 240, Room 5172, broadcast via Adobe Connect

Besides Greenhouse Gases: Role of Aerosols in Climate Change

Aerosols are small particles in the atmosphere that are a by-product of human activities, such as transportation and industry, and also emitted naturally.  Since aerosols can have both warming or cooling climate effects, as well as pose severe air pollution problems that aggravate human health, there is a tradeoff issue between reducing air pollution and mitigating warming from greenhouse gases in terms of policy making on aerosol emission controls. 

Juan de Pablo, Institute for Molecular Engineering, University of Chicago
October 16, 2014
University of Chicago, Searle 240A, 5735 S. Ellis Ave. This talk will be broadcast via Adobe Connect

Directed copolymer assembly (DCA) has emerged as a promising alternative for patterning at sub-lithographic length scales. The basic idea is to control the self-assembly of multiblock polymers through the application of external fields, surface patterns, and processing conditions. By employing materials whose characteristic dimensions are smaller than those of canonical features encountered in semiconductor devices, it is possible to integrate self-assembling systems into existing manufacturing processes, thereby increasing resolution at modest expense.