JHU Engineering

Design Day

Johns Hopkins Engineering Design Day is the Whiting School’s premier event that showcases the innovative works of Hopkins engineering students. Come see how students implement their classroom knowledge, creativity, and problem-solving skills to develop inventions and processes that solve real-world problems and create a better future.​​

Countdown to Design Day 2026 has begun.

Save the date April 28th.

ShockSense: Pediatric Hemorrhagic Shock Early Recognition

To recognize and treat hemorrhagic shock in pediatric trauma patients, trauma teams rely on heart rate (HR) and blood pressure (BP) to recognize shock. However, due to the fast-paced environment of the trauma bay, and varying classification of shock by patient age, it is challenging to recognize shock in a timely fashion. Especially since children compensate for blood loss better than adults and mask the early signs of shock. As a result, delayed recognition can result in higher mortality and increased risk of complications for pediatric patients. To address this, we’ve developed a fast, accurate, and easy-to-interpret device for use in the trauma bay that incorporates existing vitals data to deliver actionable information to the trauma team.

Some New Insights from Highly Optimized Polyhedral Passages

A shape possesses Rupert’s property if a hole can be cut through it such that a second identical copy of the shape can cleanly pass straight through the interior of the first. Such a passage proving cubes are Rupert was first shown more than 300 years ago. It remains open whether every polyhedron in three dimensions is Rupert. We propose a customized subgradient method providing high-accuracy local numerical optimization of the quality of a passage for a given polyhedron. From extensive numerical searches, we improve these best-known passages for more than half of the Platonic, Archimedean, and Catalan solids and for numerous Johnson solids. Our high accuracy solves support a new conjecture of a simple form for the Tetrahedron’s optimal passage. Despite our computational search, three Archimedean and two Catalan solids remain open, providing further negative evidence against the conjecture that all polyhedrons are Rupert.

DnATA: DNA-based Data Storage

DnATA is a DNA-based data storage platform designed to address the growing need for sustainable and durable data archiving. Our system uses a computational pipeline to convert digital files into DNA sequences, which are then stored and replicated inside bacterial cells. Leveraging natural bacterial replication reduces reliance on energy-intensive, short-lived conventional storage devices. By combining principles from synthetic biology, DnATA explores a novel biological approach to long-term archival data storage. While still in early stages, our work demonstrates the feasibility of encoding, storing, and retrieving digital information from cells, thereby opening new possibilities for secure, low-maintenance archival solutions.

The Baltimore Streetcar Museum: Revitalizing the Site and Reusing the Bollman Truss Bridge

The Baltimore Streetcar Museum located on Falls Road offers a walk down Baltimore’s triumphant past of public transportation. There are many current issues regarding accessibility to the museum, stormwater management, and current structures with no use within its property lines. This project looks into the entire site plan of the Baltimore Streetcar Museum. This includes a structural analysis of the Bollman truss that previously served streetcars and cars as the Lombard Street bridge from 1877 to the 1970s, and to reuse it as a car entry to the Maryland & Pennsylvania Roundhouse. A proposed plan of a pedestrian bridge that spans over Jones Falls was completed to connect a nearby light rail stop to the museum area, to bolster foot traffic into the area. Lastly, there are plans for revitalization and restoration of existing structures within the property lines to improve safety for visitors while tracking the floodplain.