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Yoshihisa Sei (left), Masahiro Yamashina (center), and Michito Yoshizawa (right) in front of X-ray diffractometer for crystallographic analysis

Artificial receptor distinguishes between male and female hormones

Biological receptors distinguish and bind steroid sex hormones, e.g., androgen-, progestogen-, and estrogen-type hormones, with high selectivity. To date, artificial molecular receptors have been...
Yusuke Kobayashi, first author, is a graduate student in the Department of Electrical and Electrical Engineering, School of Engineering at Tokyo Tech.

Photonics: The curious case of the disappearing cylinders

In recent years, invisibility has become an area of increasing research interest due to advances in materials engineering. Thus, making objects invisible is no...
Using Edge AI to listen to the silent voices of cattle

Using Edge AI to listen to the silent voices of cattle

A joint project team led by Tokyo Institute of Technology (hereinafter, "Tokyo Tech"), Shinshu University and Information Services International-Dentsu, Ltd. (hereinafter, "ISID") developed cattle...
Orbital angular momentum Multiplexer/Demultiplexer The multiplexing/demultiplexing module fabricated (a,d) employs a property of light called the "optical vortex" to transmit/receive multiple signals simultaneously through a shared optical medium. The required light waves with different optical vortexes are generated using a combination of a star coupler (b) and an optical-vortex generator (c).

Unlocking the untapped potential of light in optical communications

In our communication-centered era, Internet traffic has been expanding rapidly. The huge measures of information that travels through the Internet are empowered by immense...
(a) A photograph of the spiral bull's eye (SBE) structure, (b) a microscope image of the double-corrugated devices, and (c) a scanning electron microscope image of the eight-tip Siemens-star aperture at the center of the SBE structure. CREDIT Scientific Reports

Scientists developed a tunable bio-imaging device using terahertz plasmonics

Plasmon-based devices are powerful for use in highly sensitive evanescent-field detection and analysis, but they exhibit the problem of limited frequency tunability for fixed...
Can a flowing liquid-like material maintain its structural order like crystals?

Can a flowing liquid-like material maintain its structural order like crystals?

Scientists at Tokyo Tech found a chiral compound, which can unexpectedly frame a molecular assembly with an incredibly large single domain structure past a...
The new transceiver measures only 3 mm x 4 mm The proposed chip, fabricated in a standard 65-nanometer CMOS process, takes up a total area of just 12 mm2.

A miniature, low-cost transceiver for fast, reliable communications

In order to support high-speed mobile data access using the millimeter-wave spectrum for 5G, scientists at the Tokyo Tech have designed a 28 GHz...
An image of the new digital PLL The proposed fractional-N DPLL occupies an area of 0.25 mm2 in 65-nanometer CMOS.

An ultra-low-power frequency synthesizer targeted for IoT devices

Frequency synthesizers are key building blocks of wireless communication devices. Before installing, they need to satisfy demanding requirements. Until now, analog PLL synthesizers have...
An added constant highlights differences in synchronization Summing a constant parameter c warps the phase α into angle θ, according to a relationship that quickly becomes intricate (top). When this operation is applied to electroencephalogram signals, it seems to more clearly reveal the differences in synchronization while either resting or imagining to move a hand and while imagining to move either the left or the right hand (bottom).

Summing a constant may help to detect synchronized brain activity

People are great at recognizing whether separate things happen all the while, for instance, if two lights flash together or not. At the point...