DNA Self-Assembly: A Nanoscale Building Block for Bottom-up Fabrication
Divita Mathur, PhD. Naval Research Laboratory, Washington DC
The field of DNA nanotechnology has enabled scientists to realize and rapidly expand the ability to “build” objects at the nanoscale. With the help of a growing repository of DNA
self-assembling tools and strategies, it is possible to create two- and three-dimensional structures ranging from a few nanometers to micron-scale in size. The cumulative properties of
DNA, particularly its well-studied structural and physical behavior in response to varied conditions, its chemical and biological compatibility with a host of organic and inorganic
nanoparticles, and the predictable base pairing principles have enabled DNA nanotechnology to be widely adopted in many scientific disciples, namely, single-molecular studies, photonics,
plasmonics, synthetic biology, and healthcare.
In this work, I will highlight the state-of-the-art in the field of DNA nanotechnology with a focus on DNA self-assembly guided bottom up patterning of inorganic nanoparticles.
Following that I will briefly talk about some of our ongoing endeavors in leveraging different DNA nanostructures as vehicles for assembling three candidate particles with nanometer
precision, namely, DNA triangles with gold nanorods for the realization of architectures with interesting plasmonic properties, DNA icosahedra with quantum dots (QD) for enhancing
control over downstream QD fluorescence-based applications, and DNA “bricks” with fluorescent molecules such as Cyanine dyes for expanding our understanding of long range
energy transfer reactions.
Process intensification & consolidation for metropolitan wastewater treatment plants
Zhiwu (Drew) Wang, Ph.D., P.E. (Virginia Tech)
The rapid urbanization requires an urgent balance between the treatment capacity of the wastewater treat plants (WWTPs) and the urban population explosion. Techniques that allow “more to be done with less” become especially important for WWTPs confined within the metropolitan areas that serve 81% of the U.S. population. This presentation provides an overview of the efforts in Dr. Wang’s Manassas lab focusing on the development of sustainable biotechnologies for the intensification and consolidation of the liquid and solid waste treatment processes. Special emphases will be placed on the introduction of aerobic granulation that holds promise to replace the hundred-year old activity sludge process. These studies provide insight into engineered bioprocesses specifically tailored for urban biological wastewater treatment, with the overarching goal of advancing the environmental engineering research and serving the technical needs of industry stakeholders.
Dr. Wang is an Assistant Professor of Civil and Environmental Engineering at Virginia Tech. His research covers wastewater treatment, nutrient removal/recovery, solid waste anaerobic digestion, bioprocess modeling, and the conversion of waste into renewable energy and valuable bioproducts in the form of methane, ethanol, electricity, diesel and bioplastics. He holds a Ph.D. degree in Environmental Engineering from Nanyang Technological University, Singapore, and a P.E. degree in Environmental Engineering from Harbin Institute of Technology, China. He serves as the Co-Director of the Virginia Tech Center for Applied Water Research and Innovation (VT-CAWRI) and the associate editor of the Water Environment Research Journal.
If you are interested in meeting with Dr. Wang over lunch (at 12pm) or after the presentation, contact Dr. Van Aken.
Join us for the 5th annual Science Slam!
Science community unite! Show your support for Mason’s science research community by participating in this unique competition series.
Science Slam is the College of Science student researcher communication competition. Apply ASAP to be considered for one of the preliminary rounds where students are eligible to receive as much as a $250 scholarship.
Preliminary Slam – February
Friday, February 8
6:30 – 9 p.m.
Research Hall room 163