HEMI Fellows Vicky Nguyen, Kevin Hemker, Sung Hoon Kang and Mark Robbins, along with Prof. Peter Olmsted (Georgetown University) received a $1.6M Designing Materials to Revolutionize and...Read More
The Center for Materials in Extreme Dynamic Environments is pleased to welcome Professor Jagannathan Sankar (principal investigator) and Dr. Zhigang Xu from...Read More
HEMI Fellow Sarah Hörst sat down with the JHU HUB to discuss the recent discovery of Proxima b and what...Read More
Vignesh Kannan | Graduate Research Assistant
Current Research | Understanding the physics of plastic deformation and failure in Magnesium
What It Means to the World | Improving the strength of magnesium could replace most load bearing structures requiring great power-weight ratio (like engines, automotive and aircraft chassis).
Jaafar El-Awady | HEMI Professor
Research Interests | Multiscale modeling and experiments of deformation in materials under coupled environmental and mechanical conditions
What It Means to the World | Accelerate the path for developing reliable materials for extreme environments
Mach Conference | HEMI Event
Abstract | Three-day conference showcasing state of the art of multi-scale research in materials
Details | Twenty-two symposia topics with an emphasis on advancing the science and engineering of materials and structures in extreme environments.
Curious about what happens when worlds collide? What about why an athlete gets a concussion from some hits, but not others? Go ahead: Ask a HEMI expert!
Here are a few of the other questions that have been submitted to our experts.
I'm interested in learning more about impact forces. Can you describe what kind of forces HEMI investigates?
We investigate impact forces and conditions akin to the pressures seen deep within planets, or at the tip of a bullet hitting a bullet-proof vest, or when a meteoroid enters the Earth's atmosphere, or during the eruption of a major volcano.
What is HEMI?
The Hopkins Extreme Materials Institute (HEMI) is an institute dedicated to understanding materials and structures under extreme conditions, and to giving people a way to think about the difficult problems that arise in extreme events. HEMI researchers partner with academic, government, and private organizations to build the basic science needed to address threats and opportunities of the future while also providing the tools needed to address the problems of today.
I'm interested in joining the HEMI team. What do I need to do?
If you are a student or postdoctoral fellow, you'll need to apply through either the Johns Hopkins Whiting School of Engineering or the Kreiger School of Arts & Sciences. More detailed instructions can be found on our 'Work with HEMI' page.
I'm not quite sure what you mean by extreme materials and environments. Can you clarify?
Extreme materials are materials that are extraordinary in their ability to perform some function (e.g., extraordinarily hard and light). Extreme environments are extraordinarily high pressures, temperatures, energy densities, and strain rates that result from the deposition of large energies into small spaces. Examples include the conditions just under an asteroid impact on a planet, during an aircraft crash, or within the human brain under rapid accelerations (leading, for example, to concussions).
Why was HEMI created?
HEMI was created to bring groups of scholars together to solve the complex problems that are usually avoided because of their difficulty, and to teach people a way to think about such problems. An analogy can be made between extreme environments and a very bright flash of light: most people close their eyes to avoid seeing the flash, while HEMI creates new ways of looking at the event so that you can actually see what made the flash in the first place.
The impact energy in an asteroid 1km in diameter can be equal to 30 billion Hiroshima atom bombs.
HEMI cuts across three divisions within Johns Hopkins University: the Whiting School of Engineering, the Krieger School of Arts & Sciences, and the Applied Physics Laboratory.
11 universities partner with Johns Hopkins to create the Institute.