Three dimensional self-assembly using surface forces
Mon, May 12
2:00 PM — 3:15 PM
Steinman Hall 160 - Lecture Hall
The ChE Department would like to welcome David Gracias from Johns Hopkins UniversityAbstract:
The magnitude of surface forces becomes increasingly large at small size scales often having deleterious effects as seen in the stiction of microelectromechanical devices. However, surface forces can be harnessed to overcome a critical challenge in human engineering by enabling parallel assembly of devices at small size scales and in three dimensions. In this talk, I will discuss the use of surface forces in directing the folding and aggregative assembly of curved and polyhedral structures. Of intellectual significance, polyhedra are the most fundamental solids that have been studied for over two thousand years since the days of Plato. Of technological importance, the surface tension driven assembly of lithographically-patterned nano to millimeter scale curved and polyhedral structures composed of metals, semiconductors and dielectrics opens up new opportunities in colloidal science, optics and electronics.
Prof. David Gracias is Professor of Chemical and Biomolecular Engineering and Russell Croft Faculty Scholar at the Johns Hopkins University (JHU). He is also affiliated with the Institute for Nanobiotechnology at JHU. Prof. Gracias received his undergraduate degree from the Indian Institute of Technology Kharagpur, Ph.D. from the University of California at Berkeley, did post-doctoral research at Harvard University and worked at Intel Corporation prior to starting his independent laboratory at JHU in 2003. He has authored 145 publications and is an inventor on 22 US patents. He has won a number of prestigious awards such as the US National Institutes of Health (NIH) Directors’ New Innovator Award, the DuPont Young Professor Award, the Humboldt Fellowship for experienced Researchers, the SPIE Nanoengineering Pioneer Award, Beckman Young Investigator Award, Camille-Dreyfus Teacher Scholar Award, and the US National Science Foundation Career Award.