Publications

@inproceedings{ersumo2020design,

title = {Design framework for high-speed 3D scanning tools and development of an axial focusing micromirror-based array},

author = { Nathan Tessema Ersumo and Cem Yalcin and Nick Antipa and Nicolas C Pégard and Laura Waller and Daniel Lopez and Rikky Muller},

url = {https://doi.org/10.1117/12.2550994},

doi = {10.1117/12.2550994},

year  = {2020},

date = {2020-02-28},

booktitle = {MOEMS and Miniaturized Systems XIX},

volume = {11293},

pages = {1129303},

organization = {International Society for Optics and Photonics},

keywords = {3D imaging, digital holography, experimental design},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{wells2019characterizing,

title = {Characterizing the feeding current of sessile microorganisms using digital holography},

author = { Matthew Wells and Jesus Deloya Garcia and Shwetadwip Chowdhury and Michael Kellman and Laura Waller and Rachel Pepper},

url = {https://ui.adsabs.harvard.edu/abs/2019APS..DFDN05082W/abstract},

year  = {2019},

date = {2019-11-01},

booktitle = {APS Division of Fluid Dynamics },

journal = {APS},

volume = {Fall 2019},

number = {NP05--082},

abstract = {Microscopic sessile suspension feeders (MSSFs) are single-celled organisms that live attached to surfaces in freshwater and marine environments. MSSFs generate a feeding current to consume bacteria and debris. They play a vital role in aquatic ecosystems of moving carbon up the food chain. Therefore, characterizing MSSF feeding flow is important for understanding their role in the environment. MSSF feeding flows have only been viewed in 2D and often with samples pressed between two coverslips that distort the flow. However, calculations predict the feeding current forms recirculating eddies when the MSSF body is oriented perpendicular to the surface of attachment. These eddies reduce feeding rate, and as the MSSF tends toward a parallel orientation it is predicted that the eddies disappear. Here we test those predictions by measuring 3D flow around individual Vorticella. Vorticellaare a common and representative MSSF. We use digital holography to record 3D videos of Vorticella in water seeded with 5-10 μm spherical flow tracers. We then use Particle Tracking Velocimetry to find fluid velocity from particle trajectories. },

keywords = {3D imaging, digital holography, phase imaging},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{zimmerman2019stereo,

title = {Stereo in-line holographic digital microscope},

author = { Thomas Zimmerman and Nick Antipa and Daniel Elnatan and Alessio Murru and Sujoy Biswas and Vito Pastore and Mayara Bonani and Laura Waller and Jennifer Fung and Gianni Fenu and others},

url = {https://doi.org/10.1117/12.2509033},

doi = {10.1117/12.2509033},

year  = {2019},

date = {2019-02-21},

booktitle = {Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXVI},

volume = {10883},

pages = {1088315},

organization = {International Society for Optics and Photonics},

keywords = {3D imaging, digital holography, lensless imaging, on-chip},

pubstate = {published},

tppubtype = {inproceedings}

}