Xiangfeng Duan is heading a project toadvance photonics - energy-efficient technologies that use particles of light in place of the electrons used in electronics - for applications such as artificial intelligence and image capture.
The Nature perspective article “Promises and Prospects of Two-dimensional Transistors” was published in the March 3, 2021 issue. The article highlights the exciting potential of the emerging 2D semiconductors for future transistor scaling, gives an in-depth analysis of the state-of-art research and the technical hurdles facing the community, and outlines the pathways to pushing the limit of 2D transistors and enabling the lab-to-fab transition.
A team of UCLA, Caltech and Ford Motor Company researchers has improved fuel-cell technologies to exceed the U.S. Department of Energy targets in efficiency, stability and power. No other reported fuel cells have reached all these milestones simultaneously.
Researchers at University of California, Los Angeles, have recently devised an approach that could enable the development of programmable devices made of 2-D semiconductors. This approach, presented in the paper published in Nature Electronics, leverages a superionic phase transition in silver iodide to tailor the carrier type within devices made of WSe2 via a process called switchable ionic doping.
A new electrode material could make it possible to construct lithium-ion batteries with a high charging rate and storage capacity. If scaled up, the anode material developed by researchers at the University of Science and Technology of China (USTC) and colleagues in the US might be used to manufacture batteries with an energy density of more than 350 watt-hours per kilogram – enough for a typical electric vehicle (EV) to travel 600 miles on a single charge.
Transparent electrical conductors are useful, e.g., in solar cells, sensors, displays, or smart windows. Indium tin oxide (ITO) thin films are commonly used for such applications, but the material is brittle and can crack under mechanical stress. Thin films made from silver nanowires are a possible alternative as a flexible, transparent conductor. However, their conductivity is reduced by polyvinylpyrrolidone (PVP) ligands that are used during nanowire synthesis and remain on the surface.
Chosen from a pool of 343 nominated promising scientific researchers aged 42 years and younger from America’s top academic and research institutions, Duan is one of ten Physical Sciences & Engineering finalists. The finalists were selected based on their extraordinary accomplishments and their promise for the future.
Titled “Van der Waals Integration Before and Beyond Two-dimensional Materials”, the article was published in the March 20, 2019 issue of the journal.
As a UCLA professor of chemistry and biochemistry, Prof. Duan is also an Associate Editor for the journalNano Research. In 2018, Duan was named one of the most influential scientific researchers by Clarivate Analytics.
A new mechanically strong, double-pane ceramic aerogel made from hexagonal boron nitride that is resistant to high temperatures could be used in aerospace and industrial applications. The material, which boasts both a negative Poisson’s ratio and a negative thermal expansion coefficient, is very different to typical ceramic aerogels that are brittle and structurally degrade under thermal shocks.