Postdoctoral Researcher

Ethan Lippmann

Position title: Assistant Professor of Chemical & Biological Engineering

Department of Chemical and Biomolecular Engineering
Vanderbilt University

Nisha Iyer

Credentials: PhD

Position title: Assistant Professor, Biomedical Engineering

Tufts University, Medford Campus

Lab Website:


Jason McNulty

Credentials: PhD

Brett Napiwocki

Credentials: PhD

Carlos Marti-Figueroa

Credentials: PhD

Alireza Aghayee

Credentials: PhD


Maria Estevez-Silva

Credentials: MS in Biomedical Engineering

Position title: Novartis

Maria graduated UW Madison in the spring of 2017 with her Masters in Biomedical Engineering. She conducted many studies with other lab personnel at the Ashton Lab and served as a mentor to undergraduate students.

Andrew Baldys

Credentials: MS in Biomedical Engineering

Currently pursuing PhD in Biomedical Engineering at University of Minnesota.

Lauryn Campagnoli

Credentials: MS, Neuroscience Training Program

Currently working for FORCE Communications in Indianapolis, IN (2021).

Visiting Scholar

Jin Sha

Position title: Visiting Scholar

Visiting Scholar at Ashton Lab (2011-2013).
Ashton Lab Project: Nanoscale Engineering of Biomaterials for hPSC Culture

Jin Sha described his research as “Patterning surfaces with functional polymers and combining SI-ATRP and click-chemistry to regulate the surface for long-term stem cell culture.”

Stephanie Willerth

Credentials: PhD

Position title: Visiting Scholar

Tiago Fernandes

Credentials: PhD

Position title: Visiting Scholar


Joshua Plantz

In Memoriam

Online donations to UW Foundation-Joshua Zelmanowitz Plantz Scholarship Fund can be made here.

Kristen Lemke

Kristen graduated UW Madison in the spring of 2017 with her BS in Chemical Engineering. At the Ashton Lab, she studied phrenic motor neuron transplantation into a rodent spinal cord. Kristen will attend the University of Minnesota in the fall of 2017 to pursue her PhD in Chemical Engineering.

Akshitha Sreeram

Akshitha graduated UW Madison in the spring of 2017 with her BS in Neurobiology. At the Ashton Lab, she studied engraftment of motor neuron progenitors in the developing chick embryo. Akshitha will attend graduate school at Dr. William M. Scholl School of Podiatry (Rosalind Franklin University) in the Fall of 2017.

Lexi Doersch

Lexi graduated with her Bachelor’s in Biomedical Engineering from UW-Madison in the Spring of 2018. During the summer of 2018, she will continue to assist Alireza with various projects. Lexi will begin her graduate studies pursuing a PhD in BME at the University of Minnesota in the Fall of 2018. Lexi has extensive interests in biomaterials, tissue engineering, and design. Within the Ashton lab, she worked with Alireza on robotic micro-contact printing and soft lithography for neural tissue generation. Work in the Ashton Lab has allowed her to explore her creative side, has inspired her to be inquisitive, and has provided her with top-notch resources and excellent mentors. Lexi’s favorite food is peanut butter and she loves spending time at Memorial Union!

Siddhant Jain

Siddhant Jain served as an Undergraduate Research Assistant to our lab’s Postdoctoral Research Associate Nisha Iyer. He assisted Nisha with our lab’s work concerning chicken embryo transplants and reviewing various tissue clearing methods. He will continue his undergraduate studies in the Biomedical Engineering Program at UW-Madison.