The LRSM, through the NSF-supported Penn MRSEC, continues a series of Science Cafés that began in 2011 to promote NOVA’s four part TV series on materials, ‘Making Stuff with David Pogue,’ on public television. The Science Cafés, which are science talks for laymen about materials-related topic of current interest, will take place at 7:30 pm at Stoney’s British Pub, 3007 Concord Pike, Wilmington DE and The Black Sheep Pub, 247 S. 17th Street, Philadelphia, PA 19103, at 6:00 pm.
These programs are free and anyone who is interested is invited to attend. No purchase is necessary.
For further information contact:
Andrew R. McGhie at
The Black Sheep Pub
247 S. 17th Street
Philadelphia, PA 19103
Director, Quattrone Nanofabrication Facility, PENN
“Nanotechnology in Nature, Ancient Times, Today and Beyond”
Nanotechnology is a relatively new field encompassing human made objects that are so small that they can not be seen with the naked eye. In the past few decades, advances in nanotechnology have enabled seamless use of electronics in our everyday lives and is the focus of a great deal of research in basic science, engineering and medicine. However, nanomaterials had been used unknowingly by humans for millennia to construct porcelain coatings, paints, dyes, swords, stained glass and sculpture. These early uses of nanotechnology were undoubtedly inspired by nature: bright colors in flowers, spider’s silk, gecko’s feet, shells, butterfly wings and lotus flowers. In this talk, I will connect the objects we see in nature with ancient uses, today’s nano-devices and provide thoughts on where this incredible field will further impact our lives in the next decades.
Stoney’s British Pub
3007 Concord Pike
Physics & Astronomy, University of Pennsylvania
In this talk, I will discuss the science needed to understand a drying drop of coffee. We will see that even this very simple effect depends on many factors, ranging from water evaporation and fluid convection within the drop, to tension at the air-water surface and pinning of the liquid-solid contact line onto the counter-top. This rich phenomenology is also important for practical applications related to coatings, printing, painting, and even genotyping. I will describe a series simple drying experiments, on increasingly more complex fluids, that reveal the zoology of physics ideas underlying this everyday occurrence.