New method melds data to make a 3-D map of cells’ activities
May 16, 2022
Written by By Molly Sharlach, School of Engineering and Applied Science

Just as it’s hard to understand a conversation without knowing its context, it can be difficult for biologists to grasp the significance of gene expression without knowing a cell’s environment. To solve that problem, researchers at Princeton Engineering have developed a method to elucidate a cell’s surroundings so that biologists can make more…

Future hurricanes likely to pose much greater flood risk to U.S. East and Gulf coasts
Feb. 3, 2022
Written by Adam Hadhazy for the School of Engineering

Extreme flooding events spawned by hurricanes are likely to become far more frequent along the Eastern and Southern U.S. coastlines because of a combination of sea level rise and storm intensification. The findings, contained in new research from Princeton University, show that the two sources of water can produce what researchers call compound…

Work of ‘technical visionary’ underpins modern wireless communications
Feb. 2, 2022
Written by Molly Sharlach, School of Engineering

As a master’s student at Auburn University in the 1970s, H. Vincent Poor switched on an oscilloscope and tweaked its knobs to reveal a pattern of bright, undulating lines on a gridded screen — a visual measurement of background noise picked up by a radio receiver, and an example of the real-world relevance of the communication theory he was…

Glowing yeast lights the way to better biofuels
Jan. 28, 2022
Written by Tom Garlinghouse for the School of Engineering

Deploying a technique that promises to supercharge the development of biofuels, researchers at Princeton University have found a way to make yeast cultures glow when producing next generation fuels that could power cars and airplanes.

The glowing cultures address a major challenge that has slowed biofuel production: developing yeast…

Researchers find the best way for bacteria to navigate maze-like environments
Dec. 9, 2021
Written by By Patricia Waldron, School of Engineering

When bacteria spread through soil, tissues and other environments crammed with obstacles, keeping on the straight and narrow path leads to dead ends. Instead, bacteria move through open spaces until they get trapped, then reorient to hop through an opening to the next hole. A new model developed by Princeton researchers explains why this hop…

New chip hides wireless messages in plain sight
Nov. 23, 2021
Written by Engineering Communications

Emerging 5G wireless systems are designed to support high-bandwidth and low-latency networks connecting everything from autonomous robots to self-driving cars. But these large and complex communication networks could also pose new security concerns.

Encryption methods now used to secure communications from eavesdroppers can be…

Battery visionary Kelsey Hatzell on the power of interfaces
Nov. 16, 2021
Written by Molly A. Seltzer, Andlinger Center

Kelsey Hatzell made a career of seeing things that could not be seen. When she saw potential in nascent battery technology, one that could not be studied because of its opaque nature, she developed novel imaging techniques to see the hidden interface between the energy-carrying electrons and energy-generating electrodes. With it, she uncovered…

Tiny bubbles: Researchers develop a flexible new system for creating soft robotics
Nov. 11, 2021
Written by School of Engineering

Princeton researchers have invented bubble casting, a new way to make soft robots using "fancy balloons" that change shape in predictable ways when inflated with air.

The new system involves injecting bubbles into a liquid polymer, letting the material solidify and inflating the resulting device to make it bend and move. The…

Fractured artificial rock helps crack a 54-year-old mystery
Nov. 5, 2021
Written by Adam Hadhazy, School of Engineering

Princeton researchers have solved a 54-year-old puzzle about why certain fluids strangely slow down under pressure when flowing through porous materials, such as soils and sedimentary rocks. The findings could help improve many important processes in energy, environmental, and industrial sectors from oil recovery to groundwater remediation.

Ultra-pure semiconductor opens new frontier in the study of electrons
Nov. 4, 2021
Written by Scott Lyon, School of Engineering

Princeton researchers have created the world's purest sample of gallium arsenide, a semiconductor used in devices that power such technologies as cell phones and satellites.

The team baked their material down to one impurity for every 10 billion atoms, reaching a level of quality that outstrips even the world's purest silicon sample…