Summary of Qualifications
Mechanical Engineering PhD Candidate with Industry Experience
PhD candidate in Mechanical Engineering at the University of Minnesota, with 7 years of research and 2 years of industrial experience. Areas of expertise are experimental design, numerical analysis, cleanroom fabrication processes and biomedical engineering. Particular skillset includes microfabrication, photolithography, CFD, image processing, spectroscopy, and cell culture. Strong communication and collaboration skills demonstrated in numerous multidisciplinary team projects, publications and presentations. Proven creativity and technical and analytical problem solving skills, fast learner with a versatile skillset and ability to adapt to R&D and production environments.
Experimental: Cleanroom processes ♦ Photolithography ♦ Thin-film deposition ♦ Profilometry ♦ Microfluidics ♦ Tensiometry ♦ Optical microscopy ♦ High speed imaging ♦ Instrument control with LabVIEW ♦ FTIR ♦ Raman & UV-Vis Spectroscopy ♦ Design of thermal systems ♦ Analog electronic systems ♦ Microcontroller-based automation ♦ Biological assays
Computational: MATLAB ♦ Python ♦ C ♦ C++ ♦ LabVIEW ♦ COMSOL ♦ ANSYS ♦ Fluent ♦ CFX ♦ Machine learning ♦ Image processing ♦ AutoCAD ♦ NX ♦ Hyperworks ♦ SOLIDWORKS ♦ Mathematica ♦ Origin ♦ Fortran
Professional Certifications: Machine Learning (Stanford) ♦ Applied Data Science with Python (UMich) ♦ C/C++ (Brainware) ♦ Aerosol Short Course (UMN) ♦ Rheology Short Course (UMN) ♦ Introduction to Linux (edX) ♦ Deep Learning Onramp (MathWorks)
Doctor of Philosophy - Mechanical Engineering, University of Minnesota – Twin Cities Expected June 2021
Master of Science - Mechanical Engineering, University of Minnesota – Twin Cities June 2019
Master of Technology - Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India July 2013
Bachelor of Engineering – Mechanical Engineering, Jadavpur University, Kolkata, India July 2011
COMPLEX FLUIDS & MULTIPHASE FLOWS LAB, Mechanical Engineering, UMN-Twin Cities
Graduate Research Assistant April 2018 – Present
Drives 2 research projects in a collaboration within a large a team of 70+ graduate students and researchers in 20+ labs in 10+ top-tier universities in an NSF center for chemical innovation.
Designs and builds custom temperature-controlled platforms for droplet microfluidic experiments.
Enhances reliability and consistency in droplet microfluidics experiments by designing and fabricating new flow channels and conceives new methods to integrate them with temperature sensors.
Mitigates problems with temperature sensor performance and reliability by analyzing, modifying and improving cleanroom protocols for nanofabrication of custom thin-film resistive temperature devices.
Completely automates and increases detection rate of droplet freezing 100-fold by creating state-of-the-art deep neural network-based machine learning and birefringence-based optical rapid sorting methods.
Uses microfluidic and conventional tensiometers to characterize interfacial and surface tensions of surfactant laden droplets in air or oil.
Published 2 papers in high-quality journals (another in preparation) and presented in 8 conferences on projects involving design and construction of novel temperature-controlled microfluidic platforms.
BIOHEAT & MASS TRANSFER LAB, Mechanical Engineering, UMN-Twin Cities
Graduate Research Assistant November 2015 – April 2018
Improved threshold selection for tissue ablation treatment for atrial fibrillation by experimental and numerical studies on in vitro and in vivo model tissue systems.
Developed new analysis methods for collecting and postprocessing spectroscopic data to gain insights into protein secondary structure for predicting immune response of cancer focal treatments.
Devised an innovative, original protocol for tissue cryopreservation by using metal forms in blood vessels as part of a multigroup team. Experimentally and numerically evaluated model systems to demonstrate viability of protocol.
Published 5 papers in high impact factor journals from diverse fields.
HEAT TRANSFER & THERMAL POWER LAB, Mechanical Engineering, IIT Madras
Graduate Research Assistant August 2011 – June 2013
Enhanced temperature and blood flow prediction accuracy and simulation time by developing a new porous medium bioheat transfer based transient numerical model of human brain during and after stroke.
Created methods for increased efficacy prediction and selection of treatment for stroke patients by numerically evaluating stroke management modalities including cranial cooling and cold arterial saline injection.
GENERAL ELECTRIC AVIATION, Bangalore, India
Edison Engineer, Thermal Systems Design Team August 2013 – June 2015
Supported business-critical projects by presenting results in conceptual, preliminary and detailed design reviews with multiple stakeholders.
Improved turbofan engine reliability by leading the thermal design of a turbine strut to improve cooling and to mitigate oil coking issue at high temperatures.
Solved operational challenges in fielded engines by analyzing thermal performance of various components in multidisciplinary material review boards.
Improved engine efficiency and prevented failures by designing active clearance control and anti-icing systems.
Gained system-wide knowledge by completing A-Course as part of GE's organization-wide Edison Engineer Development Program (EEDP).
Roy P., Mael L., Makhnenko I., Martz R., Grassian V. & Dutcher C.; Temperature-dependent phase transitions of aqueous aerosol droplet systems in microfluidic traps. ACS Earth and Space Chemistry, 2020, 4(9), 1527-1539.
Shao Q., O’Flanagan S., Lam T., Roy P., Pelaez F., Burbach B., Azarin S., Shimizu Y. & Bischof J.; Engineering T cell response to cancer antigens by choice of focal therapeutic conditions. International Journal of Hyperthermia, 2019, 36(1), 130-138.
Manuchehrabadi N., Shi M., Roy P., Han Z., Qiu J., Xu F., Lu T. & Bischof J.; Ultrarapid inductive rewarming of vitrified biomaterials with thin metal forms. Annals of Biomedical Engineering, 2018, 46(11), 1857-1869.
Liu F., Roy P.*, Shao Q., Jiang C., Choi J., Chung C., Mehra D. & Bischof J.; The role of protein loss and denaturation in determining outcomes of heating, cryotherapy, and irreversible electroporation on Cardiomyocytes. Journal of Biomechanical Engineering, 2018, 140(6), 061007. *co-first author
Pelaez F., Manuchehrabadi N., Roy P., Natesan H., Wang Y., Racila E., Fong H., Zeng K., Silbaugh A., Bischof J. & Azarin S.; Biomaterial scaffolds for non-invasive focal hyperthermia as a potential tool to ablate metastatic cancer cells. Biomaterials, 2018, 166, 27-37.
Selected Conference Presentations
Roy P. & Dutcher C.; Approaches for high throughput ice nucleation in a microfluidic platform. 37th New England Workshop on Complex Fluids, Harvard University, December 04, Virtual presentation.
Roy P. & Dutcher C.; Droplet microfluidics for phase transitions as functions of temperature and relative humidity. 72nd Annual Meeting of the APS Division of Fluid Dynamics, November 22-24, 2020, Virtual presentation.
Roy P. & Dutcher C.; Temperature dependent phase separation and ice nucleation studies of model aerosols using droplet microfluidics. American Association for Aerosol Research 38th Annual Conference, October 5-9, 2020, Virtual presentation.
Roy P. & Dutcher C.; Microfluidic phase transitions of droplets as a function of temperature and humidity. Industrial Partnership for Research in Interfacial & Materials Engineering (IPRIME) Annual Meeting, August 4-6, 2020, Virtual presentation.
Roy P. & Dutcher C.; Microfluidic study of temperature dependent phase changes in aqueous aerosol systems. 71st Annual Meeting of the APS Division of Fluid Dynamics, November 23-26, 2019, Seattle, WA. Podium Talk.
Roy P. & Dutcher C.; Temperature dependent phase study of aerosols using droplet microfluidics. American Association for Aerosol Research 37th Annual Conference, October 14-18, 2019, Portland, OR. Podium Talk.
Roy P., Liu S. & Dutcher C.; Modeling and microfluidic measurements of surface tension and phase behavior in aerosol systems. Annual Meeting of Center for Aerosol in the Chemistry of the Environment (CAICE), UC San Diego, November 5-7, 2018, San Diego, CA. Podium Talk.
Manuchehrabadi, N., Shi M., Roy P., Qiu J., Xu F., Lu T. & Bischof J.; Metal foam based rewarming of vitrified systems. Institute for Engineering in Medicine (IEM) Annual Conference and Retreat, July 10-13, 2018, Madrid, Spain. Poster presentation.
Roy P., Liu F., Shao Q., Jiang C., Choi J., Chung C., Mehra D. & Bischof J.; The role of protein loss and denaturation in determining outcomes of heating, cryotherapy and irreversible electroporation on cardiomyocytes. 8th World Congress of Biomechanics, July 8-12, 2018, Dublin, Ireland. Poster presentation.
Roy P., Liu F., Shao Q., Choi J., Jiang C. & Bischof J.; Role of protein loss and denaturation in determining outcomes of heating, cryotherapy and irreversible electroporation on cardiomyocytes. Institute for Engineering in Medicine (IEM) Annual Conference and Retreat, November 6, 2017, Minneapolis, MN. Poster presentation.
Leadership & Teaching
Complex Fluids and Multiphase Flows Lab Spring 2018 – Present
Laboratory Mentor , Dept. of Mechanical Engineering, UMN Twin Cities
Led a team of 3 graduate and 1 undergraduate students from two universities in microfluidic and spectroscopic experiments for investigating phase of aerosols as a function of temperature.
Mentored 4 graduate and 2 undergraduate students in design and fabrication of microfluidic devices and temperature-controlled platforms using photolithographic and thin film fabrication techniques at the University of Minnesota Nano-fabrication Center.
Mentored 2 graduate students in image processing and machine learning algorithms for automated phase change detection in droplets.
Thermodynamics of Fluid Flow Fall 2019
Teaching Assistant, Dept. of Mechanical Engineering, UMN Twin Cities
Developed course materials for a graduate level course on compressible fluid flows.
Led weekly discussion sessions with office hours for communicating technical information and problem solving skills to 60 graduate and undergraduate students.
Thermal Engineering Lab Spring 2013
Teaching Assistant Dept. of Mechanical Engineering, IIT Madras
Guided undergraduate students through various thermodynamic and fluids laboratory experiments.
Led weekly discussion sessions and provided written feedback on graded reports.
• "Student Travel Grant Award" for the 2019 37th annual meeting of American Association for Aerosol Research October 2019
• Runner-up, ASME-BED PhD Student Paper Competition World Congress of Biomechanics July 2018
• Department of Mechanical Engineering Graduate Student Fellowship Fall 2015, University of Minnesota - Twin Cities Summer 2016
• "Above and Beyond" award for critical contribution to GE90 turbofan engine thermal system design program, GE Aviation May 2014
• "Prof. N Venkatarayulu Memorial Prize" for highest GPA in Thermal Engineering, IIT Madras May 2013
Science outreach mentor, CLEAR program, UC San Diego, La Jolla, CA 2020 – Present
Graduate student mentor, Science for All, University of Minnesota, Minneapolis, MN 2019 – Present
Volunteer, Annual Retreat, Institute for Engineering in Medicine, Minneapolis, MN 2016 – 2018
Volunteer, Community Outreach, GE Aviation, Bangalore, India 2013 – 2015