Recent Comments

    Category Technology/Electronics

    Superconductivity Switches On and Off in ‘Magic-Angle’ Gaphene

    January 31, 2023, Categories  Physics, Technology/Electronics

    A unique device is made of sandwiched layers, with yellow and purple on top and blue on bottom. The middle layer is dark grey representing 2 layers of graphene, and the inset shows the graphene layers creating a moiré pattern. The device has a central rectangular shape with 7 more rectangular shapes emanating from it.
    Caption:MIT physicists have found a new way to switch superconductivity on and off in magic-angle graphene. This figure shows a device with two graphene layers in the middle (in dark gray and in inset). The graphene layers are sandwiched in between boron nitride layers (in blue and purple). The angle and alignment of each layer enables the researchers to turn superconductivity on and off in graphene with a short electric pulse.
    Credits:Credit: Courtesy of the researchers. Edited by MIT News.

    A quick electric pulse completely flips the material’s electronic properties, opening a route to ultrafast, brain-inspired, superconducting electronics...

    Read More

    Scalable Method to Manufacture Thin Film Transistors achieves Ultraclean Interface

    January 31, 2023, Categories  Physics, Technology/Electronics

    Scalable method to manufacture thin film transistors achieves ultra-clean interface for high performance, low-voltage device ope
    Microchip containing thin film transistors having record sub-threshold slope, made using the in situ atomic layer deposition process. Credit: Silvia Cardarelli, Michigan ECE

    Prof. Becky Peterson at the University of Michigan leads a team that has developed a scalable, manufacturable method for developing thin film transistors (TFTs) that operate at the lowest possible voltage. This is particularly important for TFT integration with today’s silicon complementary metal-oxide semiconductors (CMOS), which are used in the vast majority of integrated circuits.

    “We’re essentially developing a less complicated device that operates at lower voltage,” said ECE Ph.D. student Tonglin (Tanya) Newsom, who is first author on the paper...

    Read More

    Spin Transport Measured through Molecular Films now long enough to develop Spintronic Devices

    January 25, 2023, Categories  Physics, Technology/Electronics

    Schematic illustration of the spin transport demonstration of αNPD molecular thin film

    Materials breakthrough in microfabrication could lead to a new generation of smaller, faster, energy-efficient electronics. A research group has succeeded in measuring spin transport in a thin film of specific molecules — a material well-known in organic light emitting diodes — at room temperature. They found that this thin molecular film has a spin diffusion length of approximately 62 nm, a length that could have practical applications in developing spintronics technology. In addition, while electricity has been used to control spin transport in the past, the thin molecular film used in this study is photoconductive, allowing spin transport control using visible light.

    Information processing dev...

    Read More

    New Antennas and Microchips help Electronics blur the line between Science and Sci-fi

    January 24, 2023, Categories  Physics, Technology/Electronics

    Kaushik Sengupta in his lab at Princeton
    Researchers in Kaushik Sengupta’s lab work to expand the capabilities of modern electronics. Photos by Sameer A. Khan/Fotobuddy

    Sophisticated antenna arrays paired with high-frequency wireless chips act like superpowers for modern electronics, boosting everything from sensing to security to data processing. In his lab at Princeton, Kaushik Sengupta is working to expand those powers even further.

    In recent years, Sengupta’s lab has designed antenna arrays that help engineers make strides toward peering through matter, boosting communications in canyons of skyscrapers, putting a medical lab on a smart phone, and encrypting critical data with electromagnetic waves instead of software.

    In a new article in Advanced Science, Sengupta’s research team presented a new type of antenna arra...

    Read More