Research Laboratory of Electronics

MIT professor Juejun Hu specializes in optical and photonic devices, whose applications include improving high-speed communications, observing the behavior of molecules, and developing innovations in consumer electronics.

Exploring interactions of light and matter

Juejun Hu pushes the frontiers of optoelectronics for biological imaging, communications, and consumer electronics.

June 30, 2020

Photo shows the device the team developed. The tube at top is connected to a supply of the precursor material, sodium nitrite, which then passes through a channel in the fiber at the bottom and into the body, which also contains the electrodes to stimulate the release of nitric oxide. The electrodes are connected through the four-pin connector on the left.

Producing a gaseous messenger molecule inside the body, on demand

Method could shed light on nitric oxide’s role in the neural, circulatory, and immune systems.

June 29, 2020

A new manufacturing process for graphene is based on using an intermediate carrier layer of material after the graphene is laid down through a vapor deposition process.

Transparent graphene electrodes might lead to new generation of solar cells

New roll-to-roll production method could enable lightweight, flexible solar devices and a new generation of display screens.

June 5, 2020

MIT researchers demonstrated a method to manufacture carbon nanotube transistors in commercial facilities that fabricate silicon-based transistors. This photograph shows Anthony Ratkovich, left, and Mindy D. Bishop, who is holding an example of a silicon wafer.

Carbon nanotube transistors make the leap from lab to factory floor

Technique paves the way for more energy efficient, 3D microprocessors.

June 1, 2020

Oxygen evolution reactions are important in a variety of industrial processes. A new study provides a detailed analysis of the process at a molecular level. As illustrated here, the researchers analyzed how molecules of water (H2O, left) are catalyzed by specific locations on a surface of ruthenium dioxide (center) to form molecules of oxygen (O2, right).

Study unveils details of how a widely used catalyst splits water

“Gold standard” material for generating oxygen from water divulges its molecular mechanisms.

May 21, 2020

MIT engineers have developed magnetic nanoparticles (shown in white squares) that can stimulate the adrenal gland to produce stress hormones such as adrenaline and cortisol.

Researchers achieve remote control of hormone release

Using magnetic nanoparticles, scientists stimulate the adrenal gland in rodents to control release of hormones linked to stress.

April 10, 2020

New “refrigerator” super-cools molecules to nanokelvin temperatures

Technique may enable molecule-based quantum computing.

April 8, 2020

An MIT team found a way to “recruit” normally disruptive quantum bits (qubits) in diamond to, instead, help carry out quantum operations. This approach could be used to help scale up quantum computing systems.

Novel method for easier scaling of quantum devices

System “recruits” defects that usually cause disruptions, using them to instead carry out quantum operations.

March 5, 2020

Potential applications of Soh's work in computational linguistics include improving speech recognition software and making machine-produced speech sound more natural.

MIT senior Christine Soh integrates computer science and linguistics

Knowledge in both a technical and humanistic field prepares her to make new tools in computational linguistics.

March 5, 2020

In a diamond crystal, three carbon atom nuclei (shown in blue) surround an empty spot called a nitrogen vacancy center, which behaves much like a single electron (shown in red). The carbon nuclei act as quantum bits, or qubits, and it turns out the primary source of noise that disturbs them comes from the jittery “electron” in the middle. By understanding the single source of that noise, it be...

Correcting the “jitters” in quantum devices

A new study suggests a path to more efficient error correction, which may help make quantum computers and sensors more practical.

February 18, 2020

A center of excellence powered by MIT.nano, SENSE.nano received substantial interest in its 2019 call for proposals, making for stiff competition.

SENSE.nano awards seed grants in optoelectronics, interactive manufacturing

The mission of SENSE.nano is to foster the development and use of novel sensors, sensing systems, and sensing solutions.

February 13, 2020

New research by engineers at MIT and elsewhere could lead to batteries that can pack more power per pound and last longer.

New electrode design may lead to more powerful batteries

An MIT team has devised a lithium metal anode that could improve the longevity and energy density of future batteries.

February 3, 2020

Researchers from MIT, Google, and elsewhere have designed a novel method for verifying when quantum processors have accurately performed complex computations that classical computers can’t. They validate their method on a custom system (pictured) that’s able to capture how accurately a photonic chip (“PNP”) computed a notoriously difficult quantum problem.

How to verify that quantum chips are computing correctly

A new method determines whether circuits are accurately executing complex operations that classical computers can’t tackle.

January 13, 2020

An MIT-invented circuit uses only a nanometer-wide “magnetic domain wall” to modulate the phase and magnitude of a spin wave, which could enable practical magnetic-based computing — using little to no electricity.

Toward more efficient computing, with magnetic waves

Circuit design offers a path to “spintronic” devices that use little electricity and generate practically no heat.

November 28, 2019

Roger Howe, William E. Ayer Professor of Engineering, Stanford University (center), with Farnaz Niroui, assistant professor of electrical engineering and computer science and Perspectives in Nanotechnology series organizer (left), and Vladimir Bulović, faculty director of MIT.nano and Fariborz Maseeh Chair in Emerging Technology (right).

Fireside chat with Don Eigler wraps up MIT.nano “Perspectives in Nanotechnology” seminars

Series featured five experts who played seminal roles in understanding the nanoscale.

October 21, 2019

MIT News | Massachusetts Institute of Technology

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