Holly Evarts

Columbia University School of Engineering and Applied Science
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May 1, 2025
HS790 Drone.
Holy Stone Unveils High-Performance Folding GPS Drone
June 26, 2025
During the test, the 156-foot-long BOLE solid rocket motor produced upwards of 4 million pounds of thrust.
Northrop Grumman Tests Most Powerful Segmented Solid Rocket Booster Ever Built
June 27, 2025
Research assistant Alyssa Carpenter inspects timbers from of a wooden Revolutionary War-era gunboat to prepare for the craft's partial reconstruction at the New York State Museum, Friday, May 30, 2025, in Albany, New York.
Researchers Reassembling Revolutionary War-Era Boat Buried Beneath Manhattan
June 25, 2025
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By optimizing the structure of acoustic voxels, Columbia Engineering researchers can control the acoustic response of an object when it is tapped and thereby tag the object acoustically. Given three objects with identical shapes, they can use a smartphone to read the acoustic tags in real-time, by recording and analyzing the tapping sound, and thereby identify each object.
Product Development
Embed Sound with Data
Like Legos, acoustic voxels can be connected to form an infinitely adjustable, complex structure.
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Columbia Engineering researchers have developed a novel sheet camera that can be wrapped around everyday objects to capture images that cannot be taken with one or more conventional cameras. They designed and fabricated a flexible lens array that adapts its optical properties when the sheet camera is bent. This optical adaptation enables the sheet camera to produce high quality images over a wide range of sheet deformations.
Product Development
Flexible Camera is Radically Different
The design could lead to cameras the size of a credit card that a photographer could simply flex to control its field of view.
April 13, 2016