Holly Evarts

Columbia University School of Engineering and Applied Science
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More from Holly Evarts
The Domino Effect of Procurement Delays in Manufacturing
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How it leads to unplanned downtime and missed commitments.
June 25, 2026
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.
July 19, 2016
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.
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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