The John A. Paulson School of Engineering and Applied Sciences (SEAS), a school within Harvard University's Faculty of Arts and Sciences (FAS), serves as the connector and integrator of Harvard's teaching and research efforts in engineering, applied sciences, and technology.


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Diamond mirrors for high-powered lasers

Just about every car, train and plane that's been built since 1970 has been manufactured using high-power lasers that shoot a continuous beam of light. These lasers are strong enough to cut steel, precise enough to perform ...

Tear-free brushing? All you need is math

As anyone who has ever had to brush long hair knows, knots are a nightmare. But with enough experience, most learn the tricks of detangling with the least amount of pain—start at the bottom, work your way up to the scalp ...

First integrated laser on lithium niobate chip

For all the recent advances in integrated lithium niobate photonic circuits—from frequency combs to frequency converters and modulators—one big component has remained frustratingly difficult to integrate: lasers.

Turning any camera into a polarization camera

Polarization, the direction in which light vibrates, provides a lot of information about the objects with which it interacts, from aerosols in the atmosphere to the magnetic field of stars.  However, because this quality ...

Unexplored dimensions of porous metamaterials

When it comes to porous metamaterials—ubiquitous, sponge-like materials used in everything from sound absorption to self-cleaning glass—it's all about how you slice it.

The first topological acoustic transistor

Topological materials move electrons along their surface and edges without any loss, making them promising materials for dissipationless, high-efficiency electronics. Researchers are especially interested in using these materials ...

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