The AnnaLab Website

In a pendant drop experiment, a non-gradient based algorithm can accurately fit small Bond number shapes.  The images show decreasing Bond number for an air bubble in water.  The lower limit for the new algorithm is Bond number of 0.01.  This limit is a factor of ten smaller than the current limit.

The manuscript entitled “ A Non-Gradient Based algorithm for the Determination of Surface Tension from a Pendant Drop: Application to Low Bond Number Shapes” has been accepted for publication in Journal of Colloid and Interface Science.  The authors are N. Alvarez, L.M. Walker and S.L. Anna.

Wingki Lee traveled to Hong Kong in January to present a poster on her work on tipstreaming at the “Conference on Advances in Microfluidics and Nanofluidics”, held at the Hong Kong University of Science & Technology from Jan 5-7, 2009.  For more about this conference, click this link.

The manuscript entitled “ The synthesis and stabilization of micron and submicron droplets in a microfluidic flow focusing device” has been accepted for publication in Physics of Fluids.  The authors are W. Lee, L.M. Walker and S.L. Anna.

Images of droplet coalescence (left) and droplet splitting (right) at microfluidic T-junctions.

The manuscript entitled “ Coalescence and Splitting of Confined Droplets at Microfluidic Junctions” has been accepted for publication in Lab on a Chip.  The authors are G.F. Christopher, J. Bergstein, N.B. End, M. Poon, C. Nguyen, and S.L. Anna.

I got to visit the YWCA this Saturday, where I talked to TechGYRLS, a program designed to get middle school and high school girls interested in STEM (Science, Technology, Engineering, and Math). We talked about surface tension, bugs that walk on water, and surfactants.  We tried to get paper clips to float on water, but it wasn’t as easy as it looks!

Nick Alvarez got a chance to present a paper entitled “A Robust Non-Gradient Based Algorithm for Determining Surface Tension from a Pendant Drop” at the 4th International Marangoni Association Conference on Interfacial & Microfluid Dynamics and Processes.  The conference was held October 21-23, 2008 in Tokyo University of Science, Chiba, Japan.

Shelley L. Anna Selected to Attend NAE Frontiers of Engineering

Professor Shelley Anna has been selected to attend the National Academy of Engineering’s (NAE) 14th annual U.S. Frontiers of Engineering symposium. Our department has had a junior faculty member selected for three consecutive years. Burak Ozdoganlar last year, and Phil LeDuc the year before.

Prof. Anna is Jointly appointed in Chemical Engineering

Starting September 1, 2008, I will hold 50/50 appointments in Mechanical Engineering and Chemical Engineering.

Congratulations Dr. Christopher!!

Gordon successfully defended his thesis dissertation today.  In January, he will join NIST as an NRC Postdoctoral Fellow in the Polymers Division.