Research
My research is at the intersection of microfluidics and additive manufacturing. I use electrospray deposition to target fluid interfaces with nano- and micro-particles, which assemble as a monolayer into organized structures. I am also working on a new project with collaborators at SUNY Binghamton and SUNY Buffalo which will utilize machine learning to predict material properties of electrosprayed films.
Publications
Prisaznuk, J. M., Huang, P., Yong, X., & Chiarot, P. R. (2023). Probing Colloidal Assembly on Non-Axisymmetric Droplet Surfaces via Electrospray. Langmuir, 39(1), 469–477. https://doi.org/10.1021/acs.langmuir.2c02729
Amiri, N., Prisaznuk, J., Huang, P., Chiarot, P., and Yong, X. (2024). Deep-Learning-Enhanced Modeling of Electrosprayed Particle Assembly on Non-spherical Droplet Surfaces. ChemRxiv. https://doi.org/10.26434/chemrxiv-2024-wzr9s (in review)
Presentations and Posters
March 16-21, 2025
Anaheim, CA
I gave an oral presentation titled: Long-Term Evolution of Interfacial Particles via Electrospray Deposition. I presented my recent analysis of particle mobility on an air-water interface. We found that the diffusivity of neighboring particles could vary by an order of magnitude, a previously unexpected result that we are trying to understand through additional experiments and numerical modeling.
November 24-26, 2024
Salt Lake City, UT
I gave an oral presentation titled: Colloidal Assembly of Electrosprayed Particles at a Static Water-Air Interface. I shared new insights regarding the long-term assembly of colloidal particles at an air-water interface. I described my recent experiments to support our theory of electrostatic charge decay on the insulative particles, where particles become more disordered over time as their interparticle repulsion is reduced.
March 3-8, 2024
Minneapolis, MN
I presented a poster titled: Interface-Mediated Electrospray Deposition: Understanding the Efficacy of Material Delivery using Substrate Focusing Methods. I shared my recent experiments using FR4 and 3D printed ABS as passive electrostatic focusing materials to improve electrospray deposition efficiency. I quantified the focusing efficiency by comparing the number of interfacial particles delivered to the total number of particles delivered, including particles on the focusing material near the target water droplet.
November 19-21, 2023
Washington, DC
I gave an oral presentation, sharing my preliminary experimental findings using a new interfacial electrospray setup. I described my ongoing work to develop a control system to maintain a stable water-air interface by compensating for evaporation.
September 6, 2023
Albany, NY
I presented an updated version of my poster: Assembly of Electrically Charged Particles on Asymmetric Droplet Interfaces. This poster included new electrostatic FEM results, processed using MATLAB to determine the normal and tangential components of the electric field at a droplet interface. I also completed a mesh dependency study to verify that the electric field solution is stable when varying the mesh from coarse to fine.
June 4-7, 2023
Raleigh, NC
I gave an oral presentation, sharing my most recent experiments using electrospray to target water droplets interfaces with new particle materials. I deposited polystyrene, monodisperse silica, and silver-coated silica particles to water-air interfaces, and observed their assembly over time. I found that the electrical conductivity of the particles significantly influenced their assembly at the interface, which affected their ability to form a monolayer structure upon final deposition.
March 5-10, 2023
Las Vegas, NV
I presented my poster: Assembly of Electrically Charged Particles on Asymmetric Droplet Interfaces, where I shared new electrostatic FEM results to supplement previous experimental findings. Using ANSYS electronics desktop, I determined the magnitude and direction of the electric field tangent to a droplet interface, which will force charged interfacial particles away from the contact line.
November 20-22, 2022
Indianapolis, IN
I gave an oral presentation at the APS DFD conference. I provided a more complete discussion of interfacial particle assembly for my droplet targeted electrospray system, which is also captured in my first publication above.
September 8, 2022
Binghamton, NY
I participated in the student poster session, where I presented my research: Colloidal Assembly on Droplet Interfaces via Electrospray. This poster included new experimental images and my quantitative analysis of the interfacial particle structure.
November 21-23, 2021
Phoenix, AZ
I gave an oral presentation at the APS DFD conference, where I shared my latest experimental data of particle motion on a non-spherical droplet interface. To explain my microscopic observations, I used MATLAB for image processing and quantitative analysis of the particle structure.
September 8, 2021
Virtual
I participated in the student poster session, where I presented my research: Colloidal Assembly on Geometrically Controlled Droplets via Electrospray. I shared videos taken during my experiments, which show the motion of particles on a fluid interface moving over time. These videos provide a view of the global particle motion and assembly; I also used the scanning electron microscope (SEM) at Binghamton University's Analytical and Diagnostics Laboratory (ADL). The SEM images allow for accurate measurement and characterization of the microparticle deposits formed after the target fluid evaporates.
September 5, 2019
Niskayuna, NY
I presented the simulation component of my poster: Directed Assembly of Nanomaterials using Electrospray Printing. I modeled electric fields produced by electrospray deposition, to supplement my collaborator's experimental work. Using ANSYS Electronics Desktop and Python, I produced visualizations of the electric field lines to improve our understanding of the structure formed by nanoparticle deposits.