Tuesday, April 02, 2019

Demystifying the Expert: Dr. Kendra Letchworth-Weaver


To introduce the public to science in a combination of comedy and education, Dr. Anca Constantin and Dr. Klebert Feitosa host the event Demystifying the Expert. The program brings together a guest speaker, who is an expert in their field of science, and comedians from JMU’s very own New & Improv’d, who attempt to “demystify the expert.” Questions, games, trivia and improvised skits all contribute to the fun as the audience learns about the expert’s work. Podcasts for previous Demystifying the Expert events can be found here on SoundCloud!

            Kicking off the spring Demystifying series on February 28, 2018, Drs. Constantin and Feitosa and JMU’s New & Improv’d hosted Dr. Kendra Letchworth-Weaver (who typically goes by Dr. Weaver) from the Department of Physics and Astronomy.  She completed her Bachelor of Science in physics at the College of William and Mary in 2007, and went on to pursue her Doctorate in physics at Cornell University in 2015.  After this, she worked at Argonne National Laboratory in Illinois, and is now a first year assistant professor at JMU. 

The members of JMU’s New and Imrpov’d who participated in the event were: Caroline Buddendorf, a sophomore theatre major whose favorite thing about theater is how active she gets to be, Ethan Shultze, a junior SMAD major who really hates The Incredibles II, and Noah Etka, a junior ISAT major who’s really into NASA. 

            The night kicked off with the twenty questions game, where each comedian took turns asking Dr. Weaver yes or no type questions to help them deduce what area of science she studies.  Our comedians went on a rocky start, but their questions were moving them towards the area of chemistry.  However, when asked if she studied chemistry, Dr. Weaver was only able to say that she did so half-way.  They did narrow down the field to something with materials chemistry, and in the end, our comedians deduced that Dr. Weaver worked in materials physics.

            After carefully dancing around this field, Dr. Weaver explained to everyone just what made materials physics different from materials chemistry and its applications with her elevator pitch.  She told us how, while some areas of both disciplines focus on characteristics of materials themselves, her work focused more on the interfaces between solids and liquids.  In particular, what makes these interfaces interesting to her is how they play with the properties of both solids and liquids with wildly different interactions in statistical mechanics, electricity and magnetism, and quantum mechanics, all of which give a potential for many different possibilities of material property expression.  And how Dr. Weaver studies these interfaces is through the use of computer simulations, where she’ll put in some descriptions of a material that she could manufacture and then have the computer then produce information that she can extrapolate to determine what qualities this new molecule will exhibit.  Her work applies to renewable energy applications, in particular like batteries, and she also explained that cell phone fires due to poor interface design.

            The second game was the headliner game, during which the comedians guess words that complete titles of articles that relate to Dr. Weaver’s research.  From the get-go, our comedians were thrown a curveball, as the first word was actually cats!  From the headline provided by the Washington Post, “Cats are both solid and liquid, according to science,” for their propensity to have a defined shape when they want, but also occupy the space of containers that they were put into.  Dr. Weaver had a quip that showed us how these related to work, noting that since cats did this, they were very much like the nanoparticles that she works with.  The second word had a more obvious link to Dr. Weaver’s work, and was water.  As it happens, companies are working on developing materials that can act like sponges to extract water from the air and release it on demand, helping to solve a water scarcity we face.  The final word, supercomputer, gave us harrowing visions of a potential Terminator or Blade Runner scenario, with the headline stating that IBM’s new supercomputer is not only capable of taking orders, but also arguing against them!  As Dr. Weaver explained, supercomputers are being used in order to grow new knowledge out of current data and make their own decisions with neural networks, and this could be applied to materials data as well.  It remains to see if we will reach the technological singularity, but as of current, we aren’t quite there yet.
            
Next was the jargon game during which the comedians guess what certain acronyms or terms mean in the expert’s field. Here, the comedians learned about DFT, density functional theory, which is a way to approximate how packed electrons are in a certain material, and the reason for this is because if we know how packed they are, we can start to discover some more properties of how they will interact with each other and with external materials.  The second group of words showed us all how scientists have some fun in their labs, with the words being opium and pot!  Our comedians were able to deduce after some giggles that pot meant potential, like electrical potentials, but opium was harder – Dr. Weaver explained that Opium was a name for what is called an optimized pseudopotential generating code, which creates a stand-in electrical potential based off of the electrons surrounding an atom. 


            Finally, the audience got to learn more about Dr. Weaver outside of her work as a computational materials physicist with the two truths and a lie game.  First, we learned that not only is Dr. Weaver a talented physicist, but she also used to be very involved with the performing arts as well!  She participated in theatre in high school, and also did a lot of tap dance before her college years.  Not believing that Dr. Weaver could tap dance, our comedians dared her to prove it, and much to everyone’s delight, she did!  In the second round, we learned that Dr. Weaver’s path to being a computational physicist was lined by a broken spectrometer (a very useful and expensive tool in many science laboratories) that she had dropped, and that her old babysitter ended up becoming someone she would publish papers with!

            The final planned event of the night was the improvised skit with physics-themed quotes from pop culture like Alice and Wonderland and the Warriors novel series by Erin Hunter, with a new title “The Game of the Fortune Cookie!”  In a first for Demystifying history, Dr. Weaver joined our comedians in the troupe, and what a skit it was!  Our group were engaged in the office hours of Professor Ethan’s Computer Violence 101 class, and entered a theological discussion of the toxic nature of water, the Old Testament divinity of computers, and a strange venture into a live student burial to ascend to a higher plane of existence.  You can view some of this wonderful impromptu using this link to access our Facebook page!

            We’d like to thank everyone for a great start to Demystifying the Expert’s spring run, and a very warm welcome to Dr. Weaver at James Madison University!  To hear more about future Demystifying shows and when podcasts of our previous shows are released, be sure to follow our Facebook page.  We'll see you in the fall!