HEMI Job Opportunities
We currently have two open positions for postdocs at the intersection of uncertainty quantification (UQ) and scientific machine learning (SciML) at Johns Hopkins University. The project is a collaboration among Professors Michael Shields, Yannis Kevrekidis, Lori Graham-Brady, Tamer Zaki, Dimitris Giovanis, and Somdatta Goswami spanning multiple scientific disciplines. The work will focus on the development of novel physics and uncertainty informed operator learning methods that are at the cutting edge of machine learning for physical systems. Recent graduates with an expertise in the following areas are highly encouraged to apply:
- Any branch of SciML including, but not limited to physics informed neural networks and neural operators
- UQ for complex, high-dimensional systems
- Bayesian Neural Networks, Variational Inference, and other inference methods on high-dimensional systems
- Dimension reduction, including latent space or manifold learning
The postdoc will work in a highly collaborative environment and will be expected to work well with a team that includes mentoring PhD students, collaborating with other postdocs, and working with multiple faculty members. The successful candidates must be highly self-motivated, with the ability to work both within the team and independently. Each successful candidate will be assigned a primary and secondary mentor from the list of faculty above based on their expertise, interests, and skill set. A Ph.D. in a related engineering field, physics, applied mathematics, or computer science is required. The positions are open effective immediately. Women and members of under-represented groups in STEM fields are strongly encouraged to apply.
Interested candidates should send their CV to [email protected].
We are seeking two highly motivated Postdoctoral Fellows with interests in experimental and/or computational studies of dynamic deformation mechanisms of concrete. Successful candidates will be appointed as Postdoctoral Fellows in the Hopkins Extreme Materials Institute (HEMI) at Johns Hopkins University, and will be associated with the Materials Science in Extreme Environments University Research Alliance (MSEE URA). HEMI is an interdisciplinary institute which seeks to develop the science and technology to protect people, structures, and the planet. The MSEE URA is an alliance of research institutions led by JHU working in close collaboration with the Defense Threat Reduction Agency to understand, predict, and control the behavior of materials in extreme environments caused by weapons of mass destruction.
One Postdoctoral Fellow will lead an experimental effort to understand the fundamental deformation mechanisms in cement and concrete subjected to high pressures, high strain-rates, and impact scenarios. A suite of tools will be available for this effort, including state-of-the-art static and dynamic testing facilities containing high-pressure triaxial compression equipment, gas guns, Kolsky bars, and the Hypervelocity Facility for Impact Research Experiments (HyFIRE). Diagnostics available include static and dynamic X-ray imaging, high-speed imaging, emission and Raman spectroscopy, scanning electron microscopy, and particle size analyzers. We expect that some experiments will be performed at synchrotron facilities such as the Advanced Photon Source (APS) or the Cornell High Energy Synchrotron Source (CHESS).
The second Postdoctoral Fellow will lead a theoretical and computational modeling effort with the goal of developing a mechanism-based and data-driven/physics-constrained computational model for concrete subjected to high pressures, high strain-rates, and impact scenarios. Approaches that integrate data from experiments and unit process simulations using data science and machine learning are of particular interest. This Postdoctoral Fellow will also leverage existing knowledge and code in HEMI for this class of models, and will also collaborate closely with industry partners to develop material models for predicting dynamic responses of concrete materials and structures.
The Postdoctoral Fellows will work in close collaboration with each other and with an engaging group of researchers in the MSEE URA and in HEMI. Both fellows will receive mentoring from the PIs of this group, which include JHU Profs. KT Ramesh ([email protected]), Michael Shields ([email protected]), Ryan Hurley ([email protected]), and Todd Hufnagel ([email protected]).
Candidates should have a Ph.D. in mechanics, engineering, physics, materials science, computer science or a related field. The Fellow appointed for experimental work should have a strong track-record of using advanced material testing and characterization tools to study the dynamic behavior of materials. The Fellow appointed for computational work should have a strong track-record of developing and using material models to predict behavior in complex loading scenarios.
If you are interested in this position, please email Ryan Hurley or any of the other PIs with a single PDF containing your curriculum vitae, the names of at least three references, and a 1-page research statement. Please use the subject line “HEMI Postdoctoral Fellow in Dynamic Behavior of Concrete”. Review of applications will begin December 1, 2023, but will continue until the positions are filled.
Johns Hopkins University is an Equal Employment Opportunity and Affirmative Action employer and is committed to building a diverse environment. We are deeply committed to the dignity and equality of all persons—inclusive of sex, gender, marital status, pregnancy, race, color, ethnicity, national origin, age, disability, religion, sexual orientation, gender identity or expression, and veteran status.
Johns Hopkins and HEMI provide a highly supportive environment for postdoctoral fellows, including carefully curated workforce development events, short courses, seminars, workshops, teaching and mentoring opportunities, and networking opportunities. Your success is our success, and we hope you will join us!
HEMI Internship Opportunities
This internship generally take place between June 1 and August 15th. For a more detailed description of this opportunity and application instructions, click here.
This apprenticeship will focus on exploring materials in extreme dynamic environments through our CMEDE program. Program participants will perform research and conduct experiments on materials that will help protect US Army soldiers while gaining experience using HEMI’s state-of-the-art facilities. The apprentice will also have the opportunity to connect with students through events hosted by the Johns Hopkins University’s Center for Educational Outreach. For more information and application instructions, click here.