
Knut Drescher
(Postdoc)
Office: G02 EQuad (Princeton)
Email: knutd[at]princeton.edu
Web 
Biological fluid mechanics. Hydrodynamic interactions of microorganisms and multicellularity. 

Janine Nunes
(Postdoc)
Office: G02 EQuad (Princeton)
Email: nunes[at]princeton.edu

I am interested in the controlled synthesis and fabrication of novel microobjects, such as microfibers and coreshell/hollow microspheres, using multiphase microfluidics to template the precursor liquid phases. 

Eujin Um
(Postdoc)
Office: G02 EQuad (Princeton)
Email: eum[at]Princeton.EDU

I am interested in finding new applications of droplet microfluidics especially in biology, fulfilling the needs of scientists in the field and industry beyond conventional tools or methods. My previous work includes development of devices for merging exact numbers of droplets, isolating single cells into droplets, and screening them with multifunctional droplet array. My research investigates welldesigned control of droplet movement based on hydrodynamics of twophase fluids in microchannels. 

Hassan Masoud
(Postdoc)
Office: G02 EQuad (Princeton)
Email: hmasoud[at]princeton.edu
Web 
I employ theory and computer simulations to find solutions to challenging problems at the intersection of engineering, physics, and biology. My research interests include mechanics of soft and active materials, fluidstructure interactions, small scale fluid mechanics, and biomimetic design. 

Shashi Thutupalli
(Postdoc)
Office: G02 EQuad (Princeton)
Email: shashi[at]Princeton.EDU

Quite unexpected collective behavior is often observed in complex open systems when many similar nonequilibrium units couple with one another, resulting in synchronization, pattern formation, emergence, broken symmetries, and phase transitions. My research is focused on experimental studies of instances of such collective behavior and the problems that I am interested in stem mainly from the domains of condensed matter physics, nonlinear dynamics, biology and fluid dynamics. 

Hyoungsoo Kim
(Postdoc)
Office: G02 EQuad (Princeton)
Email: hskim[at]princeton.edu
Web 
I am specialized in a threedimensional velocimetry for microfluidics flow. I hold special interests in understanding hydrodynamics instabilities (thin film instability) and microfluidics applications (electrokinetic flow). I am very open to cooperate with other topics, e.g. biology (thinfilm flow in vivo or the flow field surrounding a living organism). However, to study fundamental problems in fluid dynamics is still at the core of my research. 

Alban Sauret
(Postdoc)
Office: G02 EQuad (Princeton)
Email: asauret[at]princeton.edu
Web 
My research addresses various fundamental problems of fluid mechanics at different scales. I have previously studied the dynamics of microfluidic flows at low interfacial tension and its applications to allaqueous emulsions. I am also interested in dense flows of granular materials as well as rotating and geophysical flows. Currently, I am mostly interested in problems involving the coupling of capillarydriven flows and elastic structures. All these works generally involve a combination of modeling, experiments and numerical approach. 

On Shun Pak
(Postdoc)
Office: G02 EQuad (Princeton)
Email: opak[at]princeton.edu
Web 
I am interested in both fundamental problems in fluid mechanics, primarily flows at low Reynolds number, and the roles of fluid mechanics in biological phenomena, such as the locomotion of microorganisms. 

Sangwoo Shin
(Postdoc)
Office: G02 EQuad (Princeton)
Email: sangwoos[at]princeton.edu
Web 
My research focuses on the energy issues that are relevant to human. In large scale, I am interested in energy management technologies that are environmentally benign, such as refrigerantfree cooling, waste heat recovery, and clean energy harvesting technologies. In small scale, I am interested in energetic behavior of cell membranes. 

Francois Boulogne
(Postdoc)
Office: G02 EQuad (Princeton)
Email: boulogne[at]princeton.edu
Web 
A part of my research focuses on phenomena involving capillarity and elasticity of simple or complex fluids in both static and dynamic situations. I am also interested in drying processes for which I study the relation between the geometry and the arising patterns (buckling, creases, cracks...). 

Francois Ingremeau
(Postdoc)
Office: G02 EQuad (Princeton)
Email: fi[at]princeton.edu
 My research aims at understanding the relation between the macroscopic properties of complex systems, such as biofilms, and their microscopic structures. For example, the mechanical properties of biofilms reflect their microscopic state. Such properties are probably influenced by the fluidic environment they grow in. Through experiments, I am currently measuring the mechanical properties at different scales, from the whole biofilm to the matrix the bacteria are embedded in. Measuring these properties could help to understand how the biofilms form and grow. 

Benedikt C. Sabass
(Postdoc)
Office: G02 EQuad (Princeton)
Email: bsabass[at]princeton.edu
Web 
I am interested in migration and adhesion of various kinds of biological cells on soft substrates. My primary tool for these projects is traction force microscopy. Besides studying biologyrelated subjects, I also enjoy to think about fluid mechanical themes, such as artificial microswimmers and phoretic mechanisms. Finally, I study properties of networks with local magnetic breaking of timereversal symmetry. 

Zhong Zheng
(Postdoc)
Office: G02 EQuad (Princeton)
Email: zzheng[at]princeton.EDU

My research focuses on the fundamental understanding, control and design capabilities of multiphase flow dynamics in porous media. I combine theory, experiment and numerical simulation to study the basic flow patterns, such as viscous fingering, crack propagation and gravity currents; and their application to the control and design problems on energy, health and art topics, such as oil and gas recovery, CO2 storage and Chinese painting. I'm also interested in energy system and policy research from the theoretical modeling point of view. 

Jie Feng
(Graduate student)
Office: G02 EQuad (Princeton)
Email: jiefeng[at]princeton.edu

My research focuses on fabrication of nanoemulsions using interface technique. In a system with a thin oil layer on top of water, the bursting process of gas bubbles at the interface of water and air will disperse nanoemulsions of oil in the water phase. I am currently looking at the influence of different parameters on the size of nanoemulsions, such as the bubble size, viscosity and surfactants, to get more insight into the mechanism for a better control. I am also interested in nearsurface flow characteristics of slippery liquidinfused porous surface and transport phenomena in porous soft matter. 

Naima Hammoud
(Graduate student)
Office: G02 EQuad (Princeton)
Email: nhammoud[at]princeton.edu

I am interested in the area of thin films, with a primary focus on stability. Currently, I am working on thin films interacting with boundary layer flows, which come up in coating applications. I am also studying instabilities that occur due to intermolecular interactions, and I am specifically interested in how to inhibit dewetting. 

MinYoung Kevin Kim
(Graduate student)
Office: G02 EQuad (Princeton)
Email: myk[at]princeton.edu

My interested area is interdisciplinary fields including fluidic mechanics, chemistry, biology, and material science. Currently, I am more focused on biofilm streamer and twitching ability of a specific bacteria. I want to try out hydrodynamic interactions of different types of cells, including neuron cells, cancer cells, and bacterial cells. 

Josephine Lembong
(Graduate student)
Office: G02 EQuad (Princeton)
Email: lembong[at]princeton.edu

I am interested in a broad range of biophysics problems. My work is mainly on the dynamics of collective chemosensing in cells; most recently I have been studying how this process is coupled to the mechanical sensing of the tissue rigidity. I also studied problems involving red blood cell aggregates called rouleaux, i.e. how they form and breakup during flow, and also modulation of aggregation using longchain molecules. 

Jessica Shang
(Graduate student, coadvised by Alexander Smits)
Office: D100 EQuad (Princeton)
Email: jshang[at]princeton.edu

I am interested in a range of problems that involve flow over deformable boundaries. In one of my projects, I am interested in the fluidstructure interactions between a fluid environment and a highly flexible fiber, such as the flow around kelp, grass, whiskers, and other biological structures. More recently, I have been exploring the dynamic response of a thin film on a body subjected to external flows and its potential ability to reduce drag. 

Suin Shim
(Graduate student)
Office: G02 EQuad (Princeton)
Email: sshim[at]princeton.edu

I’m currently studying the effects of surfactants (SDS,…) on CO2 gas bubble dissolution in microfluidic channels. I’m also interested in droplet behavior on patterned surfaces and spontaneous deformation of elastic materials due to capillary forces. 

Jason Wexler
(Graduate student)
Office: G02 EQuad (Princeton)
Email: jwexler[at]princeton.edu

I am involved in a range of research projects centered around studying the deformation of fluid interfaces and flexible objects in viscous flow. In one of my current projects I investigate the effects of flexibility on capillary adhesion between solid objects. In another I study a new type of dragreducing surface. I have also done some work investigating the deformation of fibers in flow, and the coating of magnetic spheres in a microfluidic device. 

Wen Zeng
(Visiting student from China)
Office: G02 EQuad (Princeton)
Email: wenz[at]princeton.EDU

My research topic is mainly about the dropletbased microfluidic closedloop control system and its application, including the droplet generation in Tjunction microfluidic channel, linearization between droplet length and flow rate ratio of two immiscible fluids and the control algorithm of closedloop control system. 